View Full Version : no compresion WTF
dsm430
04-28-2008, 07:34 AM
has any one had their 272 cams make it so the valves dont shut all the way ?????????
or are my hydrolic lifters not working because their is no oil pressure yet
the lifters look like they are bottomd out ???????
BoostinPower
04-28-2008, 08:48 AM
Did you put in new springs/ retainers? Or just the cams?
dsm430
04-28-2008, 08:58 AM
just cams r their different rockers in different years or somthing
springs n retaners aint going to change valve lenght just how they come back faster
Installing cams is not going to make it so you have no oil pressure. The head is one of the last places on the oil system besides the turbo if you feed from the head or on a stock 1g. The oil pressure sensor is located damn near right after the oil pump. So something must be wrong in that area. Pull the pan off, see if you have anything in the pick up tube. That or maybe the oil pump took a shit on you.
dsm430
04-28-2008, 11:50 AM
i get oil pressure, but what i ment is do i need oil pressure to bleed off my hydrolic tenssioners, for a period of time
i think that i need to bleed my tentioners (take them out and do it in a vice)
does it sound right?????
sorry for confusing every one
dsm430
04-28-2008, 12:16 PM
where is a good place 2 get 3rd gen lifters cheap also what engine??
Grammar please? Its difficult to understand your rambling.
Are you sure timing is right.
I have yet to EVER bleed the "hydrolic lash adjusters" with no symptoms as you are describing. Something tells me you either have timing set wrong or there is another issue at hand.
Look on ebay for them... You probably want to look for whatever engine you have?
Dizmm
04-28-2008, 06:03 PM
I have had one issue before where I had the lifters out for a while and when i put the head back together and on the car, I had no compression for a while. After cranking it over for a few minutes it started to build compression and eventually started up.
dsm430
04-29-2008, 07:35 AM
they sent me the wrong cam (CROWER) they dint finish grinding them 3days wasted ha ha
Dizmm
04-29-2008, 09:36 AM
they sent me the wrong cam (CROWER) they dint finish grinding them 3days wasted ha ha
haha, WTF?!?!? i have never heard of that happening. Wow. Hopefully the pistons did not meet the valves.
dsm430
04-29-2008, 10:49 AM
probly came close but they are safe
dsm430
04-29-2008, 12:17 PM
they never finished the base circle grind it was 2.5mm to big thanks to crower i wasted 3 days and now i may not get it done by dropfest or any street races any time soon
SWEEEEETTT
Did you try to start the motor at all?
Like did you use the starter to turn the motor over when you checked compression?
dsm430
04-30-2008, 07:54 AM
yes but theyonly stay open 1mm or so (not close enogh to touch piston)
just enogh to make no compression ---and it was only the exh cam they made wrong
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