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charlieRobinson
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PostSubject: Cam idle speeds   Fri Aug 15, 2014 1:26 pm

All yall with cams, what are you running and what does your idle RPM table look like?

Mine ran fine with stock idle RPMs but i have read that its better for the engine and timing chain to increase idle.

Ive read to increase it by ~100 RPM and i've also read to set the RPM around ~900 RPM

Thing is, if i set the idle to 900RPM thats ~200 more than stock in some cells.


So, what do you guys run and what does your idle table look like?


Thank you!  yay 
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deekster_caddy
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PostSubject: Re: Cam idle speeds   Fri Aug 15, 2014 2:28 pm

It all depends how big your cam is and how your engine is running. If it's idling smooth you typically don't need to change it. XP HOT cam? You might want to up it 100 RPM or so at normal operating temp.
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charlieRobinson
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PostSubject: Re: Cam idle speeds   Fri Aug 15, 2014 3:57 pm

idle is fine with stock values but i turned it up and a little and smoothed the curves.

Turbo Tim says it doesnt matter. Just tune it to idle with more or less lope and have fun.



What about timing? what timing advance to you cam heads use for idle cells?
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turtleman
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PostSubject: Re: Cam idle speeds   Sat Aug 16, 2014 12:56 am

I'm using stock idle rpm in P/N and I raised it I think like 100rpm warmed up in gear to keep the alternator from cutting off as much. I didn't really do anything with timing I don't think.
Charlie, did you find your lump?
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charlieRobinson
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PostSubject: Re: Cam idle speeds   Sat Aug 16, 2014 2:10 am

My what?
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turtleman
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PostSubject: Re: Cam idle speeds   Sat Aug 16, 2014 12:41 pm

I think I meant your lope - did you get your cam lopey?
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charlieRobinson
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PostSubject: Re: Cam idle speeds   Sat Aug 16, 2014 6:04 pm

turtleman wrote:
I think I meant your lope - did you get your cam lopey?


Doesnt sound lopey at all, i dont think. Sounds like a heavy breathing stock cam. Whatever that means.

Barely noticeable that its not stock and probably imperceptable to the untrained ear.



Will a lower idle RPM save fuel?  study  will a higher RPM launch better?
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