Mercury V-6's horsepower - Bridgeport ?

[86vintage]

Wanted to find out more about the history of the Mercury V-6 and years and horsepowers and what year did the bridgeport - bridged exhaust come out? How was the 200 hp Black Max for a reliable motor?
Want to be prepared for my next step from Inlines!
James - 86vintage

[THE FAST ONE]

Wanted to find out more about the history of the Mercury V-6 and years and horsepowers and what year did the bridgeport - bridged exhaust come out? How was the 200 hp Black Max for a reliable motor?
Want to be prepared for my next step from Inlines!
James - 86vintageBLK MAX IS VERY RELIABLE,BUT WON'T RUN WITH 2.5'S WITH SAME MOD'S AND WEIGHT--ED

[150aintenuff]

2.4 bridgeport 245 hp,
2.5 260/280 hp

200 2.4 EXCELENT MOTA...

v6 started in 1976 as a vertical reed 2.0L then it grew to 200 hp as vertical reed in 78 or 79.. 2.4 horizontal 7 petal in 1980-82 was 225 hp... the strongest 2.4's were probably the late 80's.. 85-91.. then the 2.5's came out and they go up to what we have today....


2.5 have more torque but on light hulls it doesnt matter...2.4's can run with the best of them. ask T-rex

[86vintage]

The Mercury 2.4 V6 years 1985 threw 1991 what were the horsepower ratings and did a certain year switch to chrome bore and earlier years have a steel liner/bore?
Thanks,

James-86vintage

[STV_Keith]

2.4 bridgeport 245 hp,
2.5 260/280 hp

2.4 Bridgeport carb - 225hp
2.4 Bridgeport EFI - 245hp

[QUICKSILVER]

From a 1989 Mercury high performance manual.

Bridgeport carb nicasil = 220 propshaft hp
Bridgeport efi nicasil = 240 propshaft hp
Bridgeport carb Mod VP chrome bore = 252 propshaft hp (must use 100LL AV gas)

[supergenius74]

Does anyone know at what RPM the 2.4 BP EFI makes 240hp?

[MARINER RACING]

7400 I THINK IS WHAT THE MANUAL SAYS
I Ran mine @ 8300:eek:
the 2.4 200 and the bridgeport are 2 different animals
both are great but the 200 was more of a consumer thing then hi perf
there is a way really make them run but its time consuming.
but still an excellent motor
the bridge port was made to run @ high rpms
the nicasil bridgeport was the predicessor of the 260 motor

as far as the comparison to the 2.5.... i think that the 2.5/200 is a more versitile motor that can cover both stock and high perf simply because of the ability to change port timing .
I run a modified 2.5/200 steel bore on my tunnel boat
however i like the old nicasil bridgeport blocks enough to have one at the shop.
I think that your next step from an inline should be to a stock 2.5/200
then you can change the motor accordingly

[Scream And Fly]

I remember my carb Mod-VP. Great motor.

[Raceman]

The Mercury 2.4 V6 years 1985 threw 1991 what were the horsepower ratings and did a certain year switch to chrome bore and earlier years have a steel liner/bore?
Thanks,
James-86vintage

It wasn't a switch "to chrome bore"............... that's the way the first 2.4's were. If there was ever a production steel sleeved 2.4 I'm unaware of it, but I never bought a new one after about 1980 and went through almost a decade of disinterest in Mercs after the blowover damn near killed me in 1981, so I'm not saying for sure that they didn't.

[pyro]

This was the only 100% accurate post in this thread so far:


From a 1989 Mercury high performance manual.

Bridgeport carb nicasil = 220 propshaft hp
Bridgeport efi nicasil = 240 propshaft hp
Bridgeport carb Mod VP chrome bore = 252 propshaft hp (must use 100LL AV gas)

There was not a 2.0 200. The first 200 was 2.4, not sure what year, 1978, '79 or '80?
The first Merc V6 was the "1750", 1976 from what I recall. A 2.0 L 175 HP rated at the DRIVESHAFT, as the rules stated back then.
The Bridgeport horn EFI is rated at 240 HP at the propshaft (by today's rules) at 6500-7000 RPM, and this is also according to the manual.
They run well up into the low to mid 7's without trouble, but many turn them harder.
(The 245 was a later HP 2.5 carb motor by the way)
All 2.4 200 motors are chrome bore unless they have been re-sleeved.
There were several different versions of the 2.4 200 block especially in the early years: Fingerports vs none, two piece heads vs one, horizontal reed blocks vs vertical, etc.

Fishing motor cowl pictures from the early years of the V6 and on...
http://forums.screamandfly.com/forums/showthread.php?t=44117

[us1]

From a 1989 Mercury high performance manual.

Bridgeport carb nicasil = 220 propshaft hp
Bridgeport efi nicasil = 240 propshaft hp
Bridgeport carb Mod VP chrome bore = 252 propshaft hp (must use 100LL AV gas)

Thats what my book says.

[us1]

Does anyone know at what RPM the 2.4 BP EFI makes 240hp?
From 7000 to 7500 then it drops off fast on the dyno.

[Alan Power]

John, is there a real difference between the carb and efi on the same motors, on a dyno?
I've heard the carb motors were just downrated on paper to justify the extra cost of efi! Is this the case?

Thanks, Alan

[us1]

John, is there a real difference between the carb and efi on the same motors, on a dyno?
I've heard the carb motors were just downrated on paper to justify the extra cost of efi! Is this the case?

Thanks, Alan

Yes, you are right. The stock carb 2.4 BPs I have dynoed have no trouble making 240 HP at 7500 RPM. All the port timing is the same on all of them. The European Mod-VP carb models had high compression heads and would pull around 250 HP.

[MARINER RACING]

US1 heres a good question for you
IM not being a wise guy !

The Carbed Bridgeport had a 5 peddle front half on it
the EFI had its obvious 7 peddle front
you said that they both dyno about the same ....240hp@7500rpm

What do you think a Carbed Bridge port would Dyno with an old 225 7 ped front half?

I think that your answer will be, that a 2 Bridgeports with the same port height... will dyno @240hp @ 7500 rpm regardless of front half.

But i am curious to here if you did it and what your results were...Jay

[us1]

US1 heres a good question for you
IM not being a wise guy !

The Carbed Bridgeport had a 5 peddle front half on it
the EFI had its obvious 7 peddle front
you said that they both dyno about the same ....240hp@7500rpm

What do you think a Carbed Bridge port would Dyno with an old 225 7 ped front half?

I think that your answer will be, that a 2 Bridgeports with the same port height... will dyno @240hp @ 7500 rpm regardless of front half.

But i am curious to here if you did it and what your results were...Jay


They will dyno the same. We are only turning them at 7500. A 5 petal will make even more power than the 7 at lower RPMs. Once ported and turned at 9000 plus the 7 petal will do better than the 5. The European 5 petal carb makes 252 HP at 7500.

[supergenius74]

Thanks, you guys really know your stuff, I moved my engine up 2 more holes and wow what a difference, water presure is still good and this motor really comes alive at 7K rpm. -shane

[supergenius74]

Should my engine be oily? my old outboards always were but they were carbed and dumped gas out of the intake when tilted. I see pics of other EFI motors on here and they are all clean and dry, mine is always oily and I wasn't sure if that was normal. -shane

[pyro]

Ah, one of the nice things about EFI. Nice and clean...

[BamBam2970]

Shane
I've got a 2.0l blkmax and a 2.4l blk max they get oily, dirty and etc. Nothing a little T.L.C. can take care of (old toooothy brush @ your favorite (chemical /and or beverage) clean nicely. Everytime I see a blkmax I want to get/buy/etc. luv em (don't even care what year model) BLACK MAX I'm glad there were (black) spare parts and motors hide well in dark places /out of the wife's view ! (Told I had too many boats) Ha ! glad she hasn't seen the motas !!

[Dave S]

Buy and Hide as many as you can find...... The new motors can't be modd ..... as per se EPA.:mad: Let em leek a bit of oil and run them hard.:D

[pyro]

I'm glad there were (black), spare parts and motors hide well in dark places out of the wife's view ! (Told I had too many boats) Ha ! glad she hasn't seen the motas !!

That doesn't last for long. Believe me, I know.
Now I have a Bridgeport instead of a wife.

[Dave S]

Get a girlfreind......... with a big yard.:p

[us1]

Just never let them know how much they really cost. She thinks one cost $500 or $600 like a Chevy 350 rebuild at Kragen. She wouldn’t believe what they really cost anyway. I don’t even believe it.:D :D :D

[GTO GEORGE]

The first Black Max was 150hp, the 1750(175hp) came one or two years later.

[pyro]

Are you sure about that?

I thought they released the 2.0 1750 while they still built the inline 1500 for another year. They never made an I6 and a V6, (or an I6 and an I4) at the same time that were the same HP.

http://img55.imageshack.us/img55/9848/197720merc20advertisementdm9.jpg (http://imageshack.us)

Note the 1750 in the foreground, the only V6, and the 1500 and 1500 XS in the background.

[MARINER RACING]

PYRO.....I HAVE THAT SAME POSTER IN MY SHOP
THE DATE ON THE POSTER IS 1977
i THING IT WOULD BE FUNNY IF THE MAN..."BLACK MAX" WERE OF
AFRICAN DESCENT:eek:

[transomstand]

1976 was the first year for the consumer V-6, only offered as 175 hp, still had an inline 150 (I bought one for $2000).

Pete

[Burke Kilgour]

Weren't some of the XR4's a stock steel bored 2.4?

[us1]

Weren't some of the XR4's a stock steel bored 2.4?

In 2000 they made one. I have one here. It’s a factory behind the liner 2.4. Not too many of those around.

[THE FAST ONE]

<TABLE id=HB_Mail_Container height="100%" cellSpacing=0 cellPadding=0 width="100%" border=0 UNSELECTABLE="on"><TBODY><TR height="100%" UNSELECTABLE="on" width="100%"><TD id=HB_Focus_Element vAlign=top width="100%" background="" height=250 UNSELECTABLE="off">ALL FISHING MOTA 2.4XR-4'S ---CAME STEEL SLEEVED--ED</TD></TR><TR UNSELECTABLE="on" hb_tag="1"><TD style="FONT-SIZE: 1pt" height=1 UNSELECTABLE="on">
</TD></TR></TBODY></TABLE>
ALL FI

[us1]

You should try a behind the liner model with port work. It runs like a 2.5.

[boatdr72653]

I know this a old post but thought I would share what I know of black max.first off the 1750 was the first v-6 merc I know of know of.the image used for black max is as I am told Lynn Yeager of the mountain home,ar area.at the time of the photo shoot for the 175 Lynn Yeager was the owner of oakland boat dock on bull shoals.as I am told by those who know the day of the shoot Yeager was told to gas on it and look straight ahead and not to look back.long story short he ran off and left the boats taking the pics and was kinda lost for a bit.yeager still lives in the area and still had the awesome look and profile of the legend we all love Black Max.if you find any of what I have shared to be inaccurate I apologize.it has been told to me by a couple of the men who were there.

[ChrisCarsonMarine]

The first Black Max was 150hp, the 1750(175hp) came one or two years later.
wrong,1976-175 hp,Chris

[Scream And Fly]

wrong,1976-175 hp,Chris

That's the answer :). It was a 2.0-liter 1750 that was introduced in late 1976. Remember that wacky trim ram setup?

[crossflow 1]

I thought Black Max was Bob Seger :rolleyes:

[ChrisCarsonMarine]

Black max is jesus!!!!!

[XstreamVking]

I rigged some of the old v-6's. They had bolts for the engine mount with a hole going thru it for the power trim to connect inside the transom, and outside to the trim ram. Crude, but cool at the same time.

[rckid74]

The first Black Max was 150hp, the 1750(175hp) came one or two years later.
Wrong!! Was the other way round.

[1BadAction]

Wrong!! Was the other way round.
Quotes a 10 year old post to tell someone they're wrong. :nonod: For ****s sake.

[90 5.0]

This was the only 100% accurate post in this thread so far:



There was not a 2.0 200. The first 200 was 2.4, not sure what year, 1978, '79 or '80?
The first Merc V6 was the "1750", 1976 from what I recall. A 2.0 L 175 HP rated at the DRIVESHAFT, as the rules stated back then.
The Bridgeport horn EFI is rated at 240 HP at the propshaft (by today's rules) at 6500-7000 (tel:6500-7000) RPM, and this is also according to the manual.
They run well up into the low to mid 7's without trouble, but many turn them harder.
(The 245 was a later HP 2.5 carb motor by the way)
All 2.4 200 motors are chrome bore unless they have been re-sleeved.
There were several different versions of the 2.4 200 block especially in the early years: Fingerports vs none, two piece heads vs one, horizontal reed blocks vs vertical, etc.

Fishing motor cowl pictures from the early years of the V6 and on...
http://forums.screamandfly.com/forums/showthread.php?t=44117


There was a 2.0 200 the European release of the XR-2 was a 200hp 2.0L

[Onetime]

Quotes a 10 year old post to tell someone they're wrong. :nonod: For ****s sake.

Since he's the engineer who designed the V-6 Merc he probably knows better then most.
Show some respect.

[1BadAction]

Since he's the engineer who designed the V-6 Merc he probably knows better then most.
Show some respect.
No one said he was wrong, nor was I being disrespectful, dad. :rolleyes:

By all means though, continue arguing with people who likely aren't even active. I'm out.

[99fxst99]

Not an argument just a correction. Lighten up.

[Chaz]

It was worth reading all three pages to know that in 10 years, rckid .. will be eligible to get an antique tag for this thread ... :leaving:

https://tse1.mm.bing.net/th?id=OIP.M716d37672573b5f5b686afb01b7cc3a3o0&pid=Api

[WillySteve]

Reviving an old thread, was the '78 Black Max 175hp carb mota with chrome bore a 2.0 or a 2.4?

[ChrisCarsonMarine]

Steel bore,not chrome,2.0 litre...all service 2.0's are steel,no chrome,Chris

[sharpeye Mike]

I came across a 1980 short shaft 200 HP, at first the seller had it advertise as a 2.0 L What exactly did I come across here?

[ChrisCarsonMarine]

Vertical reed,inside head bolt pattern,2.4 chrome bore with no finger ports,5250 fat rods and a 9 ring 1 1/2 dia top main crank.Sort of an underperformer,but good rods and crank to put into a 83-89 block,Chris

[Varmint]

.....the good ol' days.http://i1118.photobucket.com/albums/k615/cajunmerc/Mercury%20Bridgeports/011_zpse7xf6cvs.jpg~original (http://s1118.photobucket.com/user/cajunmerc/media/Mercury%20Bridgeports/011_zpse7xf6cvs.jpg.html)