03-20-2013, 04:43 AM #1
- Join Date
- Jun 2009
Is .4 thou piston ring clearance asking for trouble?
Hey guys, I just got my motor back from the engineers, I have given them cp piston specs to resleeve my block to get it right to specs..
i have cp pistons .25 low comp,after I recieved back my block, I measured the piston ring clearance and its pretty tight at .4 is this asking for trouble?
03-20-2013, 09:09 AM #2
- Join Date
- Jan 2006
- Rydal, Georgia U S A
03-20-2013, 09:14 AM #3
are you talking piston to wall clearance or ring end gap?
03-20-2013, 09:19 AM #4
If anything measures .4" you have serious problems! Your rings are file fit. CP specs for boosted engines are bore size X .0055" for top ring. Second ring needs to be .004-.006" larger than top ring.
03-20-2013, 09:45 AM #5
bore x 's 4 thousanths "ring gap" is fine stager fit set top ring at . 0045. But Heres the Kicker Your machine shop should have set the gap because Unless you have a bore Gauge How acurrate can you get the ring gap to the bore size.
03-20-2013, 09:48 AM #6
03-20-2013, 09:49 AM #7
WAY to tight. ( assuming that's .004" x bore size) CP calls for .005"-.0055" x Bore size.
03-20-2013, 09:58 AM #8
sorry edit but we assume bore x's chris but bore x .0045. He had low compression so I assumed the Most least aggressive setup. I assumed we all were under the assumption Bore so I had to find my chart on Line. Carrillo changes there specs like we change Underwear
03-20-2013, 10:30 AM #9
bigdaddy doesn't wear underwear. nice try.
03-20-2013, 10:32 AM #10
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