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-   -   Rpm issue ideas.... I'm lost.... (https://www.offshoreonly.com/forums/general-q/340112-rpm-issue-ideas-im-lost.html)

Full Force 08-09-2016 07:47 AM

Yes I did

buck35 08-09-2016 08:10 AM

Are the drives trimming up equally?

Full Force 08-09-2016 08:32 AM

Yes,I have even trimmed all the way in and held WOT just to check still off.

Originally Posted by buck35 (Post 4468712)
Are the drives trimming up equally?


kvogt 08-09-2016 09:30 AM

make sure the timing is the same.

mmb 08-09-2016 09:34 AM

I would get the AFR's the same on each engine, weather will play a big difference in the power they make. I'm guessing the leaner one is up on the RPM

Full Force 08-09-2016 10:41 AM

They were same last year and also this spring until I jetted down, port still rich starboard is where I want it, when Mild Thunder and I changed jets on dyno we too air fuels from 13.0:1 down to 12.0 and saw a 10 ft lb gain in tq, and lost 1 hp. I agree the air fuel needs evened up but jetting itself does not seem to be the rpm issue, since the rpm was missing when they air fuels were even, I am still leaning to the coil maybe since with less jetting then starboard I still see 10.8-11.2 as of right now ...

This is a very annoying thing because no matter what I have done nothing changes.


Originally Posted by mmb (Post 4468752)
I would get the AFR's the same on each engine, weather will play a big difference in the power they make. I'm guessing the leaner one is up on the RPM


Full Force 08-09-2016 10:43 AM

I had hatch open and verified while running even, not just revving at dock.


Originally Posted by kvogt (Post 4468750)
make sure the timing is the same.


J-Bonz 08-09-2016 11:17 AM

Have you tried moving Ronnie around to a different seat? :)

Full Force 08-09-2016 11:20 AM

Hahahahha


Originally Posted by J-Bonz (Post 4468808)
Have you tried moving Ronnie around to a different seat? :)


Biff 08-09-2016 01:08 PM


Originally Posted by Full Force (Post 4468788)
They were same last year and also this spring until I jetted down, port still rich starboard is where I want it, when Mild Thunder and I changed jets on dyno we too air fuels from 13.0:1 down to 12.0 and saw a 10 ft lb gain in tq, and lost 1 hp. I agree the air fuel needs evened up but jetting itself does not seem to be the rpm issue, since the rpm was missing when they air fuels were even, I am still leaning to the coil maybe since with less jetting then starboard I still see 10.8-11.2 as of right now ...

This is a very annoying thing because no matter what I have done nothing changes.

Maybe I missed it, but did you try to swap the coils?


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