chad202
Well-Known Member
Just curious? What do ya'll have your fuel set on and what ECU are you running?
260 Owners?
- Thread starter chad202
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ziemer
Active Member
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- Mar 17, 2005
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Depends on the box.
Mine is a stock 260, with 34cc heads, and a spacer plate. The timing is slightly advanced passed stock (26 deg. ish)
I run an A-5 (newer stlye 39 psi) at 102%
With an A-63 (drag chip with 56 psi) I can run at 98%
I also have an A-48 (39 psi) that will also run at 102%
A stock 260, with stock heads, should be safe at around 99% with a 39 psi setup. I think that's where the usually came from the factory.
Mine is a stock 260, with 34cc heads, and a spacer plate. The timing is slightly advanced passed stock (26 deg. ish)
I run an A-5 (newer stlye 39 psi) at 102%
With an A-63 (drag chip with 56 psi) I can run at 98%
I also have an A-48 (39 psi) that will also run at 102%
A stock 260, with stock heads, should be safe at around 99% with a 39 psi setup. I think that's where the usually came from the factory.
mtolley
Active Member
both of my 260's are factory stock w/39psi and set to 99%. 1996 models. never a problem, been run hard for ever and still pull 140psi compression w/3-4% leakdown. tuff ole motors! mt
Brack
Well-Known Member
Chad, Iam running at 99 percent also,
BigRedAlli
Well-Known Member
Chad,
I'm at 99% -a48 with compression at 145-150 & 800 ft alt.
101% seemed too rich for me...Prop and plugs were gett'in dark.
Marty
I'm at 99% -a48 with compression at 145-150 & 800 ft alt.
101% seemed too rich for me...Prop and plugs were gett'in dark.
Marty
Last edited:
hack02
Well-Known Member
A48----99%
chad202
Well-Known Member
I'm running an A-36 rapiar ECU. At 99%, the plugs seem to be perfect, not wet at all, maybe even a little lean cause when I would lift, I would gain speed. I'm now running 101. I may put my A48 chip in and do some testing. I was just curious. My pyros have always run high but my props may be to deep? I'm running a 1" spacer and 33cc heads. I'm basically at sea level so maybe 101 is where I need to be.