It is alive

[brandboZ28]

but is not running well at all. I just cranked it for a second ad it was running rough to say the least. I will finish everything up tomorrow morning and hopefully have it running better. Im just glad to know that it still cranks after me fucking with it for 2 weeks.

[pendrgn]

good job man, cant wait to race you...

[redmach1]

good job man, cant wait to race you...

[louy99]

good job man, cant wait to race you...

[Slow ET]

He will own all of you after tranny swap :lol:

[Gt]

good job man, cant wait to race you...


:)

[T]

dominate :joystick:

[CrazyBosnian]

good job man, cant wait to race you...

:twisted:

[brandboZ28]

Spoke to soon. Im not going to say anything til I get pics of what I did to my engine:oops:

[pendrgn]

oh, this should be good... i will have to cruise by I see for this...

[slmdLS1]

Spoke to soon. Im not going to say anything til I get pics of what I did to my engine:oops:


what'd ya do now? anything new?

[96s10]

Spoke to soon. Im not going to say anything til I get pics of what I did to my engine:oops:

my guess is broken pushrod

[T]

bummer

[brandboZ28]

my guess is broken pushrod1 broken pushrod is only the beginning

[96s10]

what'd you do to it??

[slmdLS1]

http://www.ls1tech.com/threads/showflat.php?Cat=&Board=UBB1&Number=788574&page=0&view=collapsed&sb=5&o=31&fpart=1

[redmach1]

What kind of rocker arms do you have? If you have the stamped steel ones, the slot might not be long enough for the cam lift.

[brandboZ28]

I changed to Comp Cams 1.6 ProMagnum rocker arms. Shouldnt be a problem with those.

[redmach1]

I have seen pushrods bend if you immediately rev a motor before the lifters have had a chance to adjust. Never seen one bend all 16 though. What about the valve springs, are you getting some serious coil bind?

[brandboZ28]

I dont think so but thats what Im trying to figure out.

[93zm6tally]

I don't think this is valve springs. It has to do with valve train timing for it to be this bad. I've got to believe that when we set the lash that we were either way off or that the timing set that he got failed in some manner or was installed incorrectly. I've set the lash on my car using 3/4 to a full turn with the same rocker arms because I can't stand the noise. The only other explanation that I can think of is that they sent him the wrong lifters or rocker arms - it really doesn't make a lot of sense. :confused:

[slmdLS1]

here a video clip.

right click, save as. (http://www.dragtruk.com/PICS/C1OHH07GWOA81.mpg)

[Tally TransAm]

no question about it there is p-v contact from the video, you can hear it

heads gotta come off

what happened was the lifters werent fully pumped up when you set the valve lash. so when you started the car, they pumped up more and caused the valves to move farther and tap the pistons. i remember doing this on the olds, you had to set valve lash when the car was running to get it adjusted properly

you could do a leak down and see if the valves are leaking if you want to avoid pulling the heads off. if your lucky the pushrods bent before the valves bent/broke and all youll have to buy is new pushrods

thats all i can think off

[brandboZ28]

Ill just yank the heads:(

[93zm6tally]

Ryan,

Remember I just did this. I didn't soak my lifters because I forgot so I just dumped them in oil and popped them in. I set my lash the exact same way except that I set mine even tighter. I set all of mine to 3/4 turn not 1/4 like we did on Bo's. I still say that something happened with the timing. What I'm saying is that either something failed or we set the lash for the cylinders when the cylinder wasn't at TDC. If you for instance set the lash when the piston was 1/2 up in a compression stroke that would mean a running car would break pushrods just like it did. It could also have something to do with changing the timing chain without then resetting valve lash. Remember we set the lash with the incorrect timing chain installed. The lash wasn't re-adjusted after installing the new timing chain.

[brandboZ28]

I have it torn down to the timing chain again and it looks like its still in time but I havent turned the crank to see if the dots line up yet, too many other things to do.

[Tally TransAm]

if its still dot-dot than thats the only thing i can think of

[Tally TransAm]

mark were you using 1.5 or 1.6 rockers

[93zm6tally]

mark were you using 1.5 or 1.6 rockers

Exactly like Bo's I think. I'm running CC Pro Magnum 1.6RR. Bo yours do say 1.6 on the side right.

[brandboZ28]

Yea, mine are Comp Cams RpoMagnum 1.6 self-alligning rockers. The only difference between yours and mine is that yours are for 7/16 studs and mine are for 3/8.

[redmach1]

I don't think you need to pull the heads. The car would not have run that long if you were making valve to piston contact. I think Mark is right--improper lash .

[Tally TransAm]

hopefully im wrong, it would make things alot easier

[93zm6tally]

I don't think you need to pull the heads. The car would not have run that long if you were making valve to piston contact. I think Mark is right--improper lash .

I think I would pull the heads though. If for nothing else than peace of mind. It only costs a little more effort and some gaskets. If the lash was off enough to break pushrods it could have put a valve into the top of a piston as well. It's worth a look-see.

[Tally TransAm]

leakdown could tell if theres bent valves and you wouldnt have to pull the heads