internal engine questions

S

Sparkz#0535

Member
Re: internal engine questions

Don W. said:
The not so latest info is that the second compression gets more gap than the top.
Click to expand...


I heard thats what is done now on NA engines to reduce top ring flutter at high Rpm


from what Im seeing from Mahle the second ring is run a little tighter or the same gap on forced induction engines
 
Don W.

Don W.

Stab it and steer it
Re: internal engine questions

CP=Carrillo’s web site call for:

Street/Hi Performance:
Top ring Bore X .0045
Second ring .004 - .008 bigger than top ring
Drag and road racing:
Top ring Bore X .005
Second ring .004 - .008 bigger than top ring
Nitrus/turbo/ supercharged
Top ring Bore X .0055
Second ring .004 - .008 bigger than top ring


Since I have their pistons I used their recommendations. Mahle might be different. I didn't look them up. I seem to have seen the reason somewhere but don't have it.
 
L

Ls10

New member
Re: internal engine questions

Nothing yet. Still ordering parts. I have it all except rings and bearings.
 
L

Ls10

New member
Re: internal engine questions

Don W. said:
CP=Carrillo’s web site call for:

Street/Hi Performance:
Top ring Bore X .0045
Second ring .004 - .008 bigger than top ring
Drag and road racing:
Top ring Bore X .005
Second ring .004 - .008 bigger than top ring
Nitrus/turbo/ supercharged
Top ring Bore X .0055
Second ring .004 - .008 bigger than top ring


Since I have their pistons I used their recommendations. Mahle might be different. I didn't look them up. I seem to have seen the reason somewhere but don't have it.
Click to expand...

From what I've been finding.028 ring gap is what they say. So that for the top and .032 for second?
 
L

Ls10

New member
Re: internal engine questions

im just going to run the king bearings. just not sure on rings. there is a bunch of choices. no real track time, mostly just street stuff
 
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