it's 2007 reed change again! AND BIG IMPROVEMENT

[The Big Al]

Well most here know about my testing and changing of Fishing Engine (black NON performance model) engine with changing different reeds to best available for my 2.5 200 EFI

Now this is the test with changes from STD 5 pedals and 4 pedals.
http://forums.screamandfly.com/forums/showthread.php?t=94712&highlight=reeds

Well I changed my front half to the larger performance front half 7 pedal and used the factory STK Sport Jet 5 pedal assemblies.
Now before doing this most said it was a waist of time to a engine that turns less than 8500rpm. And mine is well below that.

Well out of all the things I have changed on this engine in the past!
This rank's as one of the best!
THE FRONT HALF CHANGE HAS POP TO IT! And I mean from every point! Definitely power increase!
Com pairs to the head cutting and SVS!!! Very noticeable!

Much better power all threw the range. Much better hole shot, very noticeable. And engine turns 6700 easy.
Top end gained 300 rpm and 3 mph.
But I need to defiantly change my props. I am very under propped now.

IE: I have elected to change my gear ratio from 1.87 to 1.75 and keep the props I have.
Have gears will make change this week I hope.

VERY VERY HAPPY WITH INVESTMENT AND RESULT

Al

http://img247.imageshack.us/img247/4185/img03202wp4.jpg (http://forums.screamandfly.com/forums/)<SCRIPT type=text/javascript>setImgWidth();</SCRIPT>

[AirRide]

Congradulations Big Al, keep us informed! Good to know. AirRide

[RBT]

Al, you might be ok with the gear change, but I hope you realize that you are loosing torque at the propshaft....... and stepping down the pitch is not the same thing. Gearing is a muliplier!.

[Tony Brucato]

That's good news Al!
Did you need to change fuel delivery at all?
How did it affect the EGT's?

[specboatops]

Post What Speed Increases You've Seen.

[TheRickster]

Would like to see a comparison now against the factory 7 petal reeds Vs. the 5 petal SJ setup.. THat price on the 5 petal SJ reeds are s-c-a-r-y..

Rick

[T-REX]

Now before doing this most said it was a waist of time to a engine that turns less than 8500rpm.

Not on a efi, but a carb mota kan't stand tha drop in air velosity...EFI on a smaller CI mota will also notice tha change to a 7 peddle front, but it will not be in tha direction yours went...

I'm ancious ta heer bout tha geer change...Thank U will be change'in back...IMHO

[The Big Al]

That's good news Al!
Did you need to change fuel delivery at all?
How did it affect the EGT's?

My digitron has gone nuts.

One sender stoped, the other only reds 300 degrees tops.

Head temps are the same, I just have it at +3% for now.

Will call you in the next few days about getting some temp senders.

AL

[The Big Al]

Al, you might be ok with the gear change, but I hope you realize that you are loosing torque at the propshaft....... and stepping down the pitch is not the same thing. Gearing is a muliplier!.

RBT, I have extra torque that is wasted.
This is why the gear change.

Your theory is in principal not fact.

[wheeliejones]

So is this something I shouldn't do on a 2.5 200hp carb motor?

[RBT]

Big Al,

My theory has A LOT of practical knowledge attached to it too. I frankly have tested more than most of this board, I have tried every gear ratio available, on different packages.
What I also have is the ability to comprehend the math that makes this all work. The torque applied to the prop changes with gear ratio, load by prop pitch does not make it all equal..... this is FACT.
You MIGHT pick up some top end, but you are going to sacrifice bottom end.
T-Wrecks is on the same page.... gear isn't good for a heavy boat with a heavy driver.
Hell even most of the Pro Gas ODBA guys don't have the power to turn 1.75's...... so how do you?


RT

[6Killer]

Except for the Pro Gas part, RT and Rex are right on the money.

Six

[T-REX]

So is this something I shouldn't do on a 2.5 200hp carb motor?


I won't say a positive NO, because O/Bs alwayz make a lier out ov U(If U admitt it!!)...I have NEVER seen a gain in performance on a carbed fish'in mota by going to the 14 peddle front....Tha smaller tha CI, the worse the results!!!....U have to keep good air velosity for carbs to work right down low(top too, but at WOT, the air iz on the move!!)...But, it all depends on what U are doing, and the entended use ov the mota...

A stock 200, 2.5 iz good to 9K with all stock ports, and 5 peddle front...Now, this iz an extreem, because this iz a light boat, and small wheel...I have a 5 peddle front, wit 4 peddle cages(stock) on my 2.0, and it will send the tach past 11K.......It would turn about the same rpm wit the 14peddle front, but wuz a full 4seconds slower from zero to 70mph!!!...JMHO....

[LARRY D]

I know of a progas boat thats winning with a 2.3 gear ratio. later Larry D

[T-REX]

2.3 geer....they reely make a geer likedat??:eek: :rolleyes:

[Casey]

but wuz a full 4seconds slower from zero to 70mph!!!...dam rex with as much bs as you talk you should be running 0-70 in under 4 seconds. whats this taken 4 seconds of you time crap? how slow was the pass :D

[T-REX]

Yep, a full 4 seconds!!!.....Datz how bad a 14 peddle front wuz on my lil mota!!....

It wuz such a pig, U ALMOST COULD HAVE OUTRUN ME TO 400'!!!!:eek: :p

[6Killer]

Damn you guys are going backwards. The LM could do it in 3.3. If I stepped up the "pop" to 25% it would do it in 3.1 but wanted to spit parts out the side on the way back to the milling area. 2.3 gears.............I never heard of such chit!:cool:

Six

[Liqui-Fly]

Big Al,

Hell even most of the Pro Gas ODBA guys don't have the power to turn 1.75's...... so how do you?


RT

Hey stupid didn't you see....he changed the reeds.:D

[RBT]

Fly, I am waiting for him to cut and paste the wasted extra torque. :D :D

[Scott in MN]

So on a slightly worked over 245 would I be better staying with the 7 petal or go with the 5. My main concern would be for quarter mile times. Lake use would be secondary, but I would like to be able to spin it to over 9000. Scott

[Casey]

stay with the 7

[The Big Al]

So is this something I shouldn't do on a 2.5 200hp carb motor?

Yes, Don't do anything I have done!

The extra speed and fuel saving is a fragment of my mind.

None of this will work.

Do not install any part that is not listed in the Mercury Parts Manunal for your serial number engine.

IF "THEM" SAY IT WILL NOT WORK.
DON'T DO IT!

I DID, MY BOAT GAINED SPEED AND BOTTOM END AND FUEL SAVINGS.

LISTEN TO THEM!
"THEM" ARE VERY SMART! :rolleyes:

[wheeliejones]

;) Well then I guess I am looking for a 7 peddle front to fit my carb motor.:eek:

[TheRickster]

I would like to see a comparison between the 5 petal SJ setup VS a stock 7 petal TDR reeded setup.. Those 5 petal SJ reeds are made of Unobtainium I guess for the price they are going for....:eek:

Rick

[The Big Al]

So on a slightly worked over 245 would I be better staying with the 7 petal or go with the 5. My main concern would be for quarter mile times. Lake use would be secondary, but I would like to be able to spin it to over 9000. Scott

Scott I had a 2.5 245hp engine it was a 7 pedal engine from factory.

Al

[The Big Al]

I would like to see a comparison between the 5 petal SJ setup VS a stock 7 petal TDR reeded setup.. Those 5 petal SJ reeds are made of Unobtainium I guess for the price they are going for....:eek:

Rick

Rick, I would also.
The TDR reeds
The dual stage Boyesen

[T-REX]

Yes, Don't do anything I have done!


Damm Big Al...Git yo pantiez out ya crack befo U have a coronary!!!...

U said U did all yo changes wit a 200, BLACK, non performance 200, EFI...Now, I said tha same changes U dun, if dun wit a carbed mota, WILL NOT WORK AZ WELL WIT A FISH'IN MOTA...When I say fish'in mota, I am talk'in a mota used for river use/ride'in/ski'in/fish'in/acasional play'in/etc!!!...I also said UI would NOT tell anyone to write what I said in stone, kuz all O/B's are not created equal, and DONOT alwayz respond to the same changes!!!!

I am not take'in nutt'in I say outta no damm book, and could give a ratz ass what mercury haz wrote in thier manuals, I am speek'in from doin what I have dun, and what I have leerned from what I've dun!!!....While we are compare'in note's, I will give U an exzample ov how much better a 14 peddle front iz on a 200 efi...I blew a rod thru tha front half ov my 91, 200, 2.5...I didn't have, nor could I fing anuther 14 peddle front at tha time, so I went back with a stock fish'in 5 peddle front...Exspect'in a reel drop in power, I wuz totally suprized when the same Mod'd mota, on the same bote, with the same wheel, geer, wuz damm neer 1/2 second quicker in tha 1/4 mile!!!!....Yea, datz rite, QUICKER!!!........I also had anuther guy bought a 14 peddle front for hiz modified 2.5, on a sprint bass bote...After change'in tha front half, and install'ion 5 peddle SJ cages, HE LOST 8mph!!!!......I leff theze 2 instances out because I didn't wanna buss yo bubble wit your tess';in...But now after ya git all bent about "THEM" pass'on what they have leerned thru THIER long hours ov tess'in...So now ya have sum tess'in that totally contridikkz yo tess'in...I wuzn't goin ther, but quess we ther anyway!!!

I don't holler BULLCHIT when sumbody tellz me they picked up 600rpm by swapp'in a tuner(unless it's raceman)...I don't slam sumbody by say'in they gained 30 HP by goin to plastik reedz(even tho I never have)...Anythang is possible wit theze 2 stroke wunderz...But U AIN'T GUNNA REED IT IN A MERCURY MANUAL, AND U WON'T SEE IT BY SPEND'IN 3 TIMES THA MONEY ON MERCURY PARTS!!!

Tha hole problem wit these Forums iz that 2/3(or better) that reed them are not mechanikz, not mechanikly inclined, and are try'in to increase thier performance, and save sum money at tha same time...Sum reed a post wher a simple change made day and night differnce, and they gotta do it...I don't jump ever time I see BS post show up on here, or I would wear out my fanger's on this key bode......When I rite sumpth'in on here, I kan back it up, but I never TELL sumone TO DO WHAT I DO!!!...I tell my results, give my opinion, an lett'r go!!......Bottom line, 5 peddle's have better bottom end that 14 peddle motors......Carbed motors run better wit 5 peddle fronts on normal river boats!!!...Thatz my story, and I'm stick'in to it!!!


Damn you guys are going backwards. The LM could do it in 3.3. If I stepped up the "pop" to 25% it would do it in 3.1 but wanted to spit parts out the side on the way

3.3...U betta step it up now!!!!..........Tha 14 peddle front on tha lil F-1 wuz like a Basscat Pantera wit a 7.5 outta tha hole, It wuz a dog to 7K, then it wuz like it wuz shot outta a cannon...Turned 11.5K wit tha 14 peddle front....NOW(wit tha 5 peddle) it will run 90 or so in tha same time it took it to take a set wit tha 14 peddle!!!!!.........This I also kan back up!!

[The Big Al]

T-REX,
My post was not directed at you.
You have even said changing the front half benefited a EFI .

I have a problem with a few "*******S" who want to be negative about anything anyone does. Call people a liar in so many words. And those who seem to be jeloius of the help I try to give others when they themselves are no more than a parts changer. Just because they are trained parts changers does not in any way make them a performance specialist.

And yes most on S&F or any site are not mechanically inclined. A trailer ball gives them a challenge. And some think if they only make one change they should get the same result.

As you remember a year or so ago I was changing things and getting nothing. Hell engine would not even run like some other 200's STK.
And like you said some will run like a bat out of hell out the box, others will not.

My result could be from all the other changes that took place before this one. This result is not from a single change but of mulitiple changes over time.

As always thanks for your help T-Rex.

Al

[j_martin]

I am one of those semi-mechanically inclined, baffled by a trailer ball types you guys are talkin' 'bout. I lucked into a pretty stout 2fo that I'd like to improve a little just for fun. Trust me, I'm not runnin' out buyin' this or that widget and trying to wind my old fishin motor off the end of the tach. Come spring, I hope to have the maintenance to the point that I can fish and ski all summer without puttin' a wrench to it. I hope to get drivability to the point I can turn my teenybopper loose on it and not worry too much.

That said, I do believe I'm learnin' one hellofalot just by bein' around and "listenin'" to what you all are sayin'. I believe I can turn the maintenance thing into a combination of savin' a little money and improvin' things a little. I'm havin' a real good time listenin' and doin'

Thanks
John

[86vintage]

"Than to have never tried at all" or was it " MUCH BETTER TO TRY AND FAIL"

But succeed YOU DID!.

Threw dilegent effort and the right parts - Bracatto SVS and PCU and steamwheel The right combination of the Sportjet reeds & 7 pedal front half, Milled heads.
Keep up the good work and thank you for the help and nice parts you have sold me. Come May hopefully I'll have my 2.5 runnin good and healthy!http://forums.screamandfly.com/forums/images/icons/icon10.gif

James
86vintage http://forums.screamandfly.com/forums/images/icons/icon14.gif

[T-REX]

OK, Maybe I jumped when I shoulda juss set ther wit my hand'z in my pocket, but It wuz a cold, wet, LONGGGGG day yesserday, an it didn't take much ov a cukkle burr under my saddle ta dig reel deep into my ass!!!...

I used ta do tess'in all backasswardz, an git results out ov tha reel world...Till I tangled wit 6killer, and he kinna kepp preech'n about how to test sumpth'in, to see if what U are tess'in iz reely make'in a differnce!!!...I see a bunch ov people holler what a differnce ONE change made, but in reality, they made other, less significant changes, that directly effected the other change...


My result could be from all the other changes that took place before this one.

The 14 peddle change ALONE won't reely make HP increase, and could very well HURT performance on sum applications...BUT, the 14peddle change, WITH OTHER changes(comp increase, port work, reed change, intake work, etc) will ALLOW the extra air flow to inhanse the other modifications.....I have.nt kepp Up wit the changes U previously made, so juss see'in yo post ov how much differnce the 14peddle front made, made me call BULLCHIT...But now know'in ther wuz other changes also made, it falls more into reality...But unfortunatlly, a lot ov guyz that kame in late to your test'in, make a false inturpritation ov the results because ov not being aware ov the other changes...I like see'in other guyz Tess'in stuff...gives me sumpth'in to tess aginst, an compare to...KEEP TESS'IN, BIG AL...Juss keep us dummies up to date ov previous mods, so we don't git our wires ctrossed!!!


Well then I guess I am looking for a 7 peddle front to fit my carb motor.

If U have a 2.4, I have a dozen or 2...But My suggestion to U would be to leeve tha 5 peddle front wher it iz!!!...Most guyz that go to 14peddle front's on a carbed mota will see a big change to the good...But only because they won't admit they pissed away good money, and it didn't do them any good!!!...

Oh, yes, 245's came wit 14 peddle front'z...BUT THEY WEREN'T ENTENDED FOR RECREATIONAL USE EITHER!!!...If U got a 245 on a bass bote/heavy ski bote(1800#-up) a 5 peddle set up will make it more user friendly...Tha only draw back would be pull'in a skier'z arms outta socket!!!!!

[M.CHAPMAN]

Hey Al,
I had a customer come in today looking for some extra torque, he is willing to pay the market price per pound, they are getting $2.50 per pound on catfish fillets around here, Whata ya say? If I can get him to go $3.00 per pound on the torque, would ya be interested in making a deal with him? Can you finance it for him if he comes up short. If you don't want to sell I understand, I guess I'll just send him down to the fish market instead.
-Eddie Haskell

[Chummy]

Hey Al, any updated speed numbers yet?

[The Big Al]

Hey Al, any updated speed numbers yet?

It ran 78mph all day long at Lake Murry Monday with buddy and we were loaded. 2 casting seats and all. Full of fuel, live well full.
6600rpm. 27p tempest still has the 1.87 for now.

Have 1.75 gears will change them soon.

It's a hand full with the ET prop with Boat not balanced at all with just me. With no casting seats and little fishing stuff.

I hope for low 80's.

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Al

[Forkin' Crazy]

It run 78mph all day long at Lake Murry Monday with buddy and we were loaded.

Be careful, you can get into trouble doing that! :eek:

Is that GPS?

[The Big Al]

i got to tell this story.

We were going back to the landing and pulled up by the Triton Bass boat with 2 guys, They were running OK, we were close and I just hammered it on down. SAY GOODBUY!

We were at the landing he loaded his boat and pulled up by my boat.
He ask, "How fast that Bullet run"? I told him about 75-80.

He says Bll****!!! ( if front of his buddy) I'm running 87mph, and you walked off. I know those Racing 200x mercury's run 100mph.

I just did not have the heart to tell this guy he doing about 60mph. Hell he's telling everyone I'm running 100mph!!

Guy made me feel good!

[The Big Al]

Be careful, you can get into trouble doing that! :eek:

Is that GPS?
All day long!!

[Forkin' Crazy]

I got one for you. :) I saw this Bullet going down the lake, and took off and caught up to him, ran beside him, and then passed him. Bullet with a 225 ProMax at that. My Allison XB02 has a bone stock (to make performance bass and ski racer rules) 2.6 GT Xflow and out ran him. But his motor was missing. :rolleyes: I was impressed. Turned a 29" SRX 7K. No GPS, but the last time I ran it, slip was less than 10%. That should've gotten me over that 95 mph mark. ;)


i got to tell this story.

We were going back to the landing and pulled up by the Triton Bass boat with 2 guys, They were running OK, we were close and I just hammered it on down. SAY GOODBUY!

We were at the landing he loaded his boat and pulled up by my boat.
He ask, "How fast that Bullet run"? I told him about 75-80.

He says Bll****!!! ( if front of his buddy) I'm running 87mph, and you walked off. I know those Racing 200x mercury's run 100mph.

I just did not have the heart to tell this guy he doing about 60mph. Hell he's telling everyone I'm running 100mph!!

Guy made me feel good!

[The Big Al]

I got one for you. :) I saw this Bullet going down the lake, and took off and caught up to him, ran beside him, and then passed him. Bullet with a 225 ProMax at that. My Allison XB02 has a bone stock (to make performance bass and ski racer rules) 2.6 GT Xflow and out ran him. But his motor was missing. :rolleyes: I was impressed. Turned a 29" SRX 7K. No GPS, but the last time I ran it, slip was less than 10%. That should've gotten me over that 95 mph mark. ;)

I'm impressed you outran a Fishing boat with a Racing boat.
That very Impressive!:rolleyes:

And besides that, sounds like your lucky day to pull up beside a Missing Mercury. Guess it felt good to finally pass one! :eek:

[david martin]

Say what you want about Big Als boat. I have been in his boat at the blingfest and it ran its a** off!! I may be wrong but I do beleive we where running fully rigged,full tank of fuel and gps at 79 mph.Al,am I wrong?I tell you,my eyes where watering really bad but I think I am right.I was totally impressed!!
David

[The Big Al]

David I think you hit the posting button a few times!:o


I think it was 78.5! :rolleyes:

[david martin]

Thats fine,says there was a problem with the site.I did not think it went through.:o O-well! Sorry guys!!!!!!!!!!!!!!and Gals!!!!!!!!!!!!!!!!!!!!!!!
David

[TheRickster]

Well, I guess you got your point across...:p

Rick

[david martin]

Maybe tooooo many times.:D Sorry for that!
David

[THE HOGG]

Al, I Want To Know About The Gear Change. I Dont Care About The Performance Concerns Cuz I Gots A 3 Litre With 1.87's So I Know I Can Turn Em. I Want To Know Where You Got The Gears And What All Is Involved In Having Them Changed. And How Much Duckets??

[tunnelmike]

Still waiting on the mail.................................. Mike

[Forkin' Crazy]

I'm impressed you outran a Fishing boat with a Racing boat.
That very Impressive!:rolleyes:

Oh yea. Last time I checked, the XB 2002 IS a FISHING BOAT. Remember, I am handicapped running this old timing engine. But you really don't know squat about that do you? I'll line up with you any day!!!! :rolleyes: :D


And besides that, sounds like your lucky day to pull up beside a Missing Mercury. Guess it felt good to finally pass one! :eek:

Yea, I am adding them to my list as I go along. The one before this one I beat had a 280 on it. Must have been that full tourney load. ;)

[Riverratt]

Do you think you will still be able to turn the 28 within 100 rpms of what the 1:87 did? I would think the gear change would limit the rpm's by more than that.

[The Big Al]

Do you think you will still be able to turn the 28 within 100 rpms of what the 1:87 did? I would think the gear change would limit the rpm's by more than that.

Engine "seems" to stop making power around 6300-6400 rpm. after that it's just winding up. John Marles told me the engine is limited to that with the stock porting. And it does feel that way.

It just feels like it's running around in second gear. Like a boat with a SKI prop.

I have to try it. :eek:

[T-REX]

Put a 22" yamaha on dat sukka an tell me if'in it stops pull'in at 6300.....If it doez, then it'z outta power....But I bet a dollar to a donut it will keep ya pinned back after 6300!!!...

It may run outta azz wit a big wheel at 6300, but my quess would be it will run outta azz alot quicker wit a taller geer......

Kummon Big Al, git off ya duff an change them geerz...I wanna see what happenz.....My guesstamate would be ya looze 2 ta 400 rpm'z wit da same wheel...But hell, I could be wrong...I wuz wrong once...I thank...Naw, maybe not....:D

[THE HOGG]

Put a 22" yamaha on dat sukka an tell me if'in it stops pull'in at 6300.....If it doez, then it'z outta power....But I bet a dollar to a donut it will keep ya pinned back after 6300!!!...

It may run outta azz wit a big wheel at 6300, but my quess would be it will run outta azz alot quicker wit a taller geer......

Kummon Big Al, git off ya duff an change them geerz...I wanna see what happenz.....My guesstamate would be ya looze 2 ta 400 rpm'z wit da same wheel...But hell, I could be wrong...I wuz wrong once...I thank...Naw, maybe not....:D

SO DO YOU THINK HE WILL LOOSE SPEED?? JUST CURIOUS CUZ I DONT KNOW. EITHER WAY, WHAT YA THINKS GONNA HAPPEN WHEN I CHANGE MY 3 LITRE FROM 1.87'S TO 1.75'S? I HOPE I GET SOME MORE SPEED!!! PLEASE,PLEASE,PLEASE:eek: :eek:

[Tom Foley]

Engine "seems" to stop making power around 6300-6400 rpm. after that it's just winding up. John Marles told me the engine is limited to that with the stock porting. And it does feel that way.

It just feels like it's running around in second gear. Like a boat with a SKI prop.

I have to try it. :eek:
Pull the dam powerhead off and have Brendan port it cause you gonna need all you can get to beat my big ass in the Allison Big Brotha !! Feel the love !! See ya at the Bling Masta !

[1BadAction]

AL, I ran both 1.78s and 1.87s on my 2.5 200 XRi. the 1.78s are soft out of the hole, but pulled hard on mid-top. keep in mind this boat probably weighs 500lbs less than yours, BUT my motor wasnt modded and still had that junk ecu on it. I didnt loose any rpm on top, mainly because the prop was only a 24.

i think its going to be an interesting swap.

[THE HOGG]

AL, I ran both 1.78s and 1.87s on my 2.5 200 XRi. the 1.78s are soft out of the hole, but pulled hard on mid-top. keep in mind this boat probably weighs 500lbs less than yours, BUT my motor wasnt modded and still had that junk ecu on it. I didnt loose any rpm on top, mainly because the prop was only a 24.

i think its going to be an interesting swap.

1.78'S??

[1BadAction]

XR6 case...

[THE HOGG]

XR6 case...
LEARN SOMETHING NEW EVERYDAY.. IS THAT WHERE THOSE OTHER FUNKY NUMBERED GEARS CAME FROM??(MENTIONED EARLIER IN THIS POST)

[j_martin]

XR4 also.

[T-REX]

Missa Hogg, U kan't base what happens to Big Al'z final results on what will happen to yo'z...U have a 3liter, and it haz more torque to turn a taller geer...Not apples to apples!!!


keep in mind this boat probably weighs 500lbs less than yours, BUT my motor wasnt modded

Agin, not apples to apples!!...500#s, and a stock PH, and a small prop kan't shed a light on what Big Al'z boat will do...500#s iz one killer, but depending on the mods made to Big Alz mota, will sholy dictate how hiz results will be...and I would figger it won't be able to get to it'z power without a small wheel...and unless U plan on turn'in super high rpm, tha top end speed will suffer!!....juss my unprofessional opinion!!

Oh, and that XR4 case wit 178 geerz will last az long az a snowball in hell wit a big wheel and any kind ov HP...It will send tha penion bearing out tha side!!!

[The Big Al]

What is this engine?

Purchased NEW replacement powerhead in 2004
Model 1996 200EFI

7 pedal front half
stk 5 pedal Sport jet reed cages & reeds
Brucato SVS
Brucato PCS with steam wheel with 200x Program Rev limit at 7k
Digitron with EGT's
Cut heads 34CC, done correctly and on the money!
Compression 145lbs all 6 within .05% (143 to 146)
Timing 25 degree, all curve modules gone!
Fuel pump moved to inside boat.
(all of STK fuel system, vaporator tank removed & vacum fuel pump removed))
Aeromotive adjustable fuel Reg set at 38 psi
Fuel injectors worked by Brucato
ECU moved inside boat
Alien Cowl
Bucket out, midsection drilled
Mod VP tuner
Sportmaster w 1.87 ( to change to 1.75)
Prop Mercury Labed 28ET and Tempest 27p

(when I had the 4 pedal I did have a spacer plate)
Waiting on Jay at SST for 7 pedal plate
-----------------------------------------------------------------------
Things used to monitor engine and performance
Lowrance GPS
Automter tach calibrated Also have tach with max RPM recall on Digitron
Digitron with dual EGT's
Autometer Head temp on both heads with digital 60 - 210 Degree temp range

Adjustable Jackplate, always moving for best performance.

[LARRY D]

Hey Rex, try this out for stock porting. DSRA prostock boat 9200 rpms @ 96 mph. 32.5 cc heads 5 pedal reeds and xri fuel injection and 24 yamaha drag prop.:rolleyes: later Larry D

[T-REX]

Well...anuther case ov APPLES TO APPLES!!!

[Forkin' Crazy]

What is this engine?

Purchased NEW replacement powerhead in 2004
Model 1996 200EFI

7 pedal front half
stk 5 pedal Sport jet reed cages & reeds
Brucato SVS
Brucato PCS with steam wheel with 200x Program Rev limit at 7k
Digitron with EGT's
Cut heads 34CC, done correctly and on the money!
Compression 145lbs all 6 within .05% (143 to 146)
Timing 25 degree, all curve modules gone!
Fuel pump moved to inside boat.
(all of STK fuel system, vaporator tank removed & vacum fuel pump removed))
Aeromotive adjustable fuel Reg set at 38 psi
Fuel injectors worked by Brucato
ECU moved inside boat
Alien Cowl
Bucket out, midsection drilled
Mod VP tuner
Sportmaster w 1.87 ( to change to 1.75)
Prop Mercury Labed 28ET and Tempest 27p

(when I had the 4 pedal I did have a spacer plate)
Waiting on Jay at SST for 7 pedal plate
-----------------------------------------------------------------------
Things used to monitor engine and performance
Lowrance GPS
Automter tach calibrated Also have tach with max RPM recall on Digitron
Digitron with dual EGT's
Autometer Head temp on both heads with digital 60 - 210 Degree temp range

Adjustable Jackplate, always moving for best performance.

Holy cow!!! And you aren't getting over 80? :eek:

Maybe you should have it ported to ProMax specs. ;)The Bullet I ran had a stock ProMax and was running low 90's at least!

:)

[1BadAction]

only like 3 of those mods are ones that will have an effect on power...

[j_martin]

Oh, and that XR4 case wit 178 geerz will last az long az a snowball in hell wit a big wheel and any kind ov HP...It will send tha penion bearing out tha side!!!


Hey T-rex
is about 170 @ 6500 rpm "any kind ov HP"

John

[T-REX]

A magII would put up 165HP, and my XR4 case lasted 5 yeers.....I have a XR4 case lay'in right beside this desk, with a hole in it wher the pinion came out, and it don't have 5 hours on it...approx 225HP and a 25" 4blade prop!!

[j_martin]

I suspect that if I have a nice smooth 5 blade prop on it and keep it submerged, it would last longer, too.

This thing is 18 years old now, but the engine, i suspect was puttin out 'bout 140, and it was runnin' deep. 22 pitch high five screw on it revved 'bout 6000 under those conditions.

[T-REX]

I know ov a couple that is still goin without failure, but they are used the way they were intended....submerged....I would thank a 4 or 5 blade prop would make it easier on the case by spread'in out tha torque...