Your motor stock or modified?????

[81hydrostream]

Is your motor stock or is it modified if so what have you done to it, and do you do your own work?

My motor is slightly modified bored 10 over with the heads cut and boysen reeds, with relieved exhaust.

[175checkmate]

2.4 200+
Slighty moded. No can, relieved exh(talon 2.5 mod). Mild port work. Mod vp carbs.
Guy that built it said when I asked him how hard to turn it, 7500 rpm if you want 2 seasons or keep it under 7k and it will live a long time. So under 7k it is.

[captcarb]

260 with:

SVS
Seebold flywheel


Jim

[imq707s]

Didn't do any of these mods myself, but this is what the previous owner said was done .....

89' 200GT 3-Liter Looper
cut heads (140psi)
Wiesco forged pistons
Boysen reeds
Relieved Exhaust
Carbs re-jetted

Not sure if it's making much more power than stock, but it's at least enough to push my Vegas to 80mph

[Scream And Fly]

The Helmut-S&F machine:

Sportmaster lower unit(2 - not modified) 1.75:1, 1.87:1 ratios, 14.5 x 32P Mercury Lab Cleaver.

1998 STV Euroski, standard weight, "ski" bottom, full interior (stereo, amps, and all!)

1996 2.5 260 EFI Offshore, 300-spec cylinder porting and ported exhaust, 175 lbs. compression, JSRE dry-stacked drag exhaust, JSRE lightened and balanced rods and wrist pins, Marles US1 lightened, balanced, and pinned Mercury high-performance pistons, Brucato SVS, Brucato PCU with extension harness and Steamwheel, Geforce lightened flywheel.

Oh, and more on the way

Greg

[77STREAM]

relieved exaust as modified then I'm in! !977 Mercury 1500

[WOT RACING]

2.5 LOTS OF GOOD STUFF....

But I dont know what is done... I would have to ask Talon2.5
He Built it...lol

But I turn 6800-7200 approx. 95mph 18 Talon

[Corona Mike]

"Stock"97' Merc.300 Drag.There is NOTHING!!!stock about this motor--even if that is the way Mercury built it! Mike T.

[Travis Fulton]

can you say fuel injected 3 cyl omc? with expansion chamber! msd! 2- lb flywheel! custom head! ported out the wazoo!and bores like coffee cans! ON A JON BOAT!!haha

[mendo]

1750-upgraded charging system, exhaust relief, solid mounts. (The family workhorse, super reliable ski/tow machine)
2.4-cut heads, lightweight cowl, exhaust relief, one-piece adaptor, solid mounts, cooling mods.
2.4-2.5 pistons, exhaust chest work, port work, still in assembly.
40hp OMC-cooling modified, (works great now on the pontoon!!)

[northeastcat]

2.4 chrome bore fishin mota, daul stage reedz , tuned reed blocks , no can , opened mid , porte matched tuner thru the plate , drystacked , jetted , 30cc heads , 150 comp. , lightened flywheel , light weight cowl , sporty lower w/ 1.87:1 , and velocity stacks with a 1"spacer

[RB in NM]

Steel sleeved pro max block, stuffed full of JSRE, Marles,Brucato'goodies......currently running the 40a system, but with a purdy JSRE lightweight flywheel setting on the bench waiting for the 16amp reg and rectifier soon....

[Dukeofchippewa]

Boysens, nose cone, opened exhaust.

[WATERWINGS]

This one's stock, (except hogged exhaust chest, no can, relieved exhaust), and it only turns 6500, but like 175checkmate said about it lasting longer..........235 hours this season, and "its still alive"

The motors that I port and run tight heads, (150-160 psi) only seem to last 150 hours or so, at 6800 to 7400 RPM

Sure I miss that extra 10 MPH, but now adays, I am happy running 55 or 60 MPH on the pad............until something tries to pass me.

[beer30]

With all the problems, I have had with this engine. I don't really want to think about problems if I modified it. Chuck.