perf. gains of tighter heads 2.5 merc.

[FORBESAUTO]

The truth of the matter is that you are drag racing running a super light boat with a small pitch prop and your engine runs through the rpm that's affected by spacer so quick your not seeing a big improvement on the clock which I bet it is still there, just not as drastic. Where this guy that is only turning 6000 rpm and pulling a 29 pitch prop would see much more gains in acceleration than you would. This is just one those variables I speak of. It's not I'm right, your wrong. It's just two different beast .

[FORBESAUTO]

It's just an expression noting he would know the difference , not how I justify mods. You need to chill out. No one is arguing your methods of testing. Like I said each situation is different.

[texasvector]

I don't need to chill out, I turned a 28 hoss @ 9000 You do the he math , if you want at any to dispute me call me @ 229 -289-2504 tell me what your bringing and will plan according.

you were saying something about me getting bitter with old age?????

[Chaz]

That's ok Chaz I really respect your opinion but we are talking 10 k

So let me get this right , cuz I'm a lil corn-fruzed ...

Your sayin that when RK takes his 18' Action ( post #1 ) and Cervello ( post #2 ) takes his bass boat out , they should turn their 6000 RPM motors to 10,000 RPM ...

How big a natrusss bottle does a feller need , if the sand bar or fishin hole is 40 miles away ..

[timmc6]

Maybe sometimes I need to to keep my mouth shut I guess,lol A big bottle Chaz!!lol

[ChrisCarsonMarine]

Timm,I expect your running something with a horn front?If so I don't think the spacer helps your motor as much as much as a carb or laser front motor,because your motor already has a straight path in the intake tract,unlike the carb motors.Top end will most likely be governed by carb size,but the acceleration curve is improved...so says my butt,Chris

[timmc6]

True that Chris!! Happy Holidays!!for sure you what reeds I run!!

[racervboat]

I like to use my bottles in 1.75 liters thank you brother LOL

[rkmirage]

Ok, if my mota will turn 6800 with a 26 os chopper but only 6000 with my 29srx, then will the tighter heads make a difference? I guess that's what I was trying to ask. I know adding compression won't add rpm.

[patchesII]

Ok, if my mota will turn 6800 with a 26 os chopper but only 6000 with my 29srx, then will the tighter heads make a difference? I guess that's what I was trying to ask. I know adding compression won't add rpm.

Yes it will. Just don't expect miracles unless you're adding a ton of compression

[tlwjkw]

Yes it will. Just don't expect miracles unless you're adding ton's of compression

fixed it Eric!

[rkmirage]

I'm not expecting it to run like my promax, just like to see it turn the srx maybe 63-6400, is that within reason?

[tlwjkw]

who knows for sure till its done???... sometimes a difference of "what" its supposed ta do and "what" it actually does... we're on computers!....... jmo.

jan!... T-rex 'xplained that ta me many years ago...............

[Markus]

Timm,I expect your running something with a horn front?If so I don't think the spacer helps your motor as much as much as a carb or laser front motor,because your motor already has a straight path in the intake tract,unlike the carb motors.Top end will most likely be governed by carb size,but the acceleration curve is improved...so says my butt,Chris

Some one once told me that Mercury built horn engines with spacers one year (1996 2.5 EFI ROS or something like that), and per the spec sheet, the spacer added 5 hp. True or not, I don't know.

[90 5.0]

Adding some compression is one of the mods most people do , no matter if it's an outboard or a car motor.

It "should" let you turn a bigger prop a few more rpm's.

I never run an outboard with less than 145psi.