ok guys so my mechanic rebuilt my 350 and it won't start...:/...

he sais i get no compression...i get 60 our of 150...and the only way i get compression is that the rockers need 2 loosen them up...but then they r 2 loose...

i replaced the cam...(cam specs on the below)

do i need longer push rods or shorter push rods???...

he also said the piston rings my b backwards???...

plz help i really want my car back on the road...

 

Your best bet call Comp Cams ask them tell them what rockers you are using also

 

From looking at the cam spec sheet I would think Stock lenght but I would use a Push rod Checker just to make sure.

But if you use a aftermarket rocker arms some call out for diffrent lenght push rods.

But one thing I can tell you I purchased a set of Auminum Full Roller rockes arms yes you pick up 10 to 20 more H/P that the Stamp steel robs from the motor.

But I going to Fork out the extra cash soon and get a set of steel RR arm instead of my auminums I read Auminums can break after time.

With my luck ya it will happen.

 

What does push rods, rocker arms, or anything in the head have to do with compression?

If it were me, and I didn't have any compression, that "mechanic" would be rebuilding it again for free! Compression was HIS job and he screwed it up! Piston rings backwards? Wasn't it HIS job that HE got paid for to make sure they were right? How does a ring go in backwards anyway? There's only one way to install a piston ring!

This is why I do all my own work, because I can F something up way cheaper than paying some other idiot to F it up for me!

In the future - stay away from "mechanics" - there really is no such thing anymore. Just idiots with wrenches.

 

the push rods r all stock and so r the rockers...

 

You dont have a big cam I would Think stock should work but Give Comp Cams a call just to make sure.

Or you can go to there web site and look up your cam part Number and they should be able to tell you what push rods to use.

If you car is a TPI motor if you dont have heads and intake to macth you willnt not make that much more power the stock stuff not ment to make power.

I had to Change my heads intake up grade the injectors to macth the cam to make the power I was looking for.

Headers Help also I also In Cali I using full lenght headers Ya passsing smog with the headers is kinda tricky it pass the sniffer its the full lenght headers just have to find someone to over look them but all the smog is hooked up and working.

 

yes that's true...and yes he is gona rebuilt it...

but i will go ahead and call comp cams 2 c wat they say...

 

yea i know i have smog legal headers...but i don't have them on yet I'm just waiting 2 have my car running so i can change the heads and put the headers on and do a full exhaust...

 

do u guys think timing might b an issue???...cuz it turns over but it sounds like it struggles...

 

He couldn't get it right the first time and you're going to let him "rebuild" it again? I say he pays for the parts he screwed up, and you go somewhere else before he breaks anything else. You didn't know any better before-hand, and now you do.. so don't make a hard lesson harder over a dumb decision.

 

if the "mechanic" is going to warranty the work and make it right, why are you out screwing with it? Please ask your mom or dad to explain how tough it is at times to get warranties honored and you don't want to mess around.

 

yes its all true...

but i wana kno wat would b causing my engine not 2 turn on?...

 

Sounds like the rockers are all too tight. (valves are getting held open 100% of the time)

Just back em all off 2 turns, and re-adjust em after you get it running.

 

ok thanks this is a big help...
i went on compcams.com and the recommend i put bigger push rods or thicker i believe and they also recommended roller rockers...

do u think that will help?...

I'm gona call compcams 2day 2 double check if i do need them...

and just 2 let everyone kno i only paid 350 2 rebuild my 350...

 

OK, I'll bite

please list what was done for the $350

Around here, for $350 I get the block dipped, bored, honed and new cam bearings and that's it, the $350 is gone.

 

i paid 950 total...it was 600 for the block bored and everything that goes in it...i got everything new...and i kno bcuz i picked everything up...

the 350 was to put the engine together...

 

Upgrading the push rods and rockers might possibly be "a good thing"; but that's not going to solve an assembly problem.

Just try backing the rockers off.

See my signature for a helpful mental approacah to take, for figuring out the cause of a problem.