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superstan 08-25-2012 07:20 AM

hello just finished building a 360 roller ran good on the dyno
but when i dropped it in the car ive got some puffs of smoke coming out of the breather filters what could this be?

delawarebill 08-25-2012 07:27 AM

don't forget its still a new motor and will need some miles to seat everything... u using a pcv and breather on the other side of engine ??

vinniekq2 08-25-2012 08:16 AM

what kind of power did it make?curious,,,

all motors have some blow by.If you ran it on the dyno,shes broken in. are you using a positive valvecover vent?

CNC BLOCKS NE 08-25-2012 08:29 AM

Do a leak down test at TDC to see if there is an issue with ring seal maybe the block was not prepared correctly?

superstan 08-25-2012 11:34 AM

no im have breathers with elements on both sides the smoke/steam is consistant but it also puffed a large cloud of smoke a couple times wile idling

superstan 08-25-2012 11:38 AM

how is a leak test performed?
i had the engine professionally built by a reputable builder but i thought maybe one of the rings wasnt seated properly
i will be doing a compression test tonight
also the lifters seem to be ticking at low idle maybe too much oil pressure?

cdminter59 08-25-2012 11:58 AM

Engine smoke
Most auto engines have a PVC valve mounted in the left valve cover with a vacuum hose from it to the large port on the carburetor. Some run a breather cap on the right side valve cover vented through the air breather base. Some run a breather cap with a filter. Do a search on on this site of crankcase ventilation. Make sure the valve covers have baffles where the breather caps are installed or oil splashes up the bottom on the bottom of the breathers.

superstan 08-25-2012 12:43 PM

we hit 550 bhp 510 torque
siamese block jesel rockers w2 heads stroked and boared 30 over

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