blufc3s

iTrader: (1)

Me too. Anyone else have issues with those springs?

pyro719

iTrader: (5)

Thats good to know! I figured there would be plenty on room to drop a valve when te piston is all the way in the bore?

RamAir95TA

iTrader: (2)

Gotta answer the pushrod question. Regrinding a new cam reduces the overall base-circle of the cam requiring longer pushrods.

BruceBufferTA

iTrader: (1)

And Obama also said he was going to end the war in Afghanistan and turn the economy back around. Personally I think there are a lot better springs out there he could have gone with. He also should have changed out the PR/rockers and ditched his OEM camshaft and spent the $$$ for a NEW custom grind. Who the heck re-uses a OEM camshaft?????

blufc3s

iTrader: (1)

I'll bet that's what caused the problem. It would be interesting to see where the "contact patch" on the valve is with one of the remaining R/Rs. Probably getting flex from the stock push rods, exacerbating the problem.

Compstall

iTrader: (5)

I agree with several here and believe the pushrod length wasn't correct against the regrind. Had they been the right ones, I don't think he would have had a problem, but then I also kinda wonder if he had a weak spring out of the box too..

draggin97s10

iTrader: (2)

stock p/r = weak as paris hilton. especially since they wont be correct length.

shbox

I didn't say LE recommended them for him. Just saying they are apparently recognized to be suitable for certain applications. Of course he could have gone with a better spring. I agree that doing the cheap regrind thing did not seem to work out. I guess it seemed a good idea at the time.

blackz93

iTrader: (2)

Unless something was binding, the PR length probably isn't gonna cause what happened to him.

duh

iTrader: (16)

The fact is he had multiple failures at once. The spring, rocker and pushrod all failed. Now, to be truthful, one probably caused the other two. I'd guess that the spring failed first, then the continued operation of the engine caused the rocker and pushrod to be damaged. And my next question would be how far into the guide is the valve spring? If it's mostly sticking out you may have gotten lucky and bent it before it hit the piston. Chances are though that you'll be needing a rebuild. Maybe just a set of forged pistons and a hone job. Save as much as possible. Either way there's no real way to know how bad it is inside until the heads come off. Good Luck.

robsquikz28

iTrader: (246)

You are comparing apples to oranges. Obama who cares about him, Secondly Lloyd knows his **** and what works. HE tells you what to use and what not to use. He dont like to steer anyone in the wrong direction.

RamAir95TA

iTrader: (2)

But Lloyd doesn't do the QC on Bullet springs.

SPEED#1

iTrader: (14)

What is QC mean?

ryanisfast

To answer your questions. No, I didn't check the length of the pushrods, but I did make sure that the tip of the rr was centered over the valve during half lift. I made sure that the roller rocker wasn't anywhere near coming off the edge of the top of the valve.

BTW, the engine I bought came out of a 93-94, so I thought that was hardened. I think it was either the spring or the roller rocker that failed first. The cam wasn't the issue. The tip of the roller rocker that makes contact with the valve could have snapped off first and caused all the problems. So, it's hard to say. I just hope the piston isn't effed up, but I have no money to dump into the car for a while. I just spent it all getting it back together....

I bought the vs2700 because of loyde reccomending them in a post form lt1ls1.com However, people reccomend the compcams 26918 and there are posts all over this forum of busted springs, so who knows???

RamAir95TA

iTrader: (2)

Quality control.

djjab57

iTrader: (17)

QC = Quality Control

djjab57

iTrader: (17)

Ninja'd me

StealthFormula

iTrader: (35)

Sorry to hear about your misfortune but I just want to point out that cheaping out on the valvetrain is not always and rarely is a smart thing to do. On the bright side, atleast you can learn from this and not make the same mistake twice.

About the springs...unless they were recommended to you for your particular camshaft then you cannot just assume they are the correct spring to use. The 918's you are referring to were a bad batch made in mexico awhile back. The safe alternative is the PAC 1218's.

ryanisfast

Yeah, if the piston is ok, I might go with LE's set of ported heads in a few months, but I'm definetaly nervous about using the same springs and then have another break again. Either way, I'm not driving the car for a few months, so that really sucks. And it makes me feel insecure about my own work. Since I did all the work, I'm nervous to do it again because I thought I installed things correctly and I did my homework matching the right valvetrain components together. I called bullet racing cams and they told me the vs2700's were what I would need for the cam I was installing.

duh

iTrader: (16)

To tell you the truth you may have had one little issue. It may not have been anything you could have prevented, it may have been something that even an experienced builder would have had an issue with. I'm putting money on the spring, and you can't always tell if you've got some or one bad one.....As the old saying goes......Sh*t happens. Don't be afraid to do it again, that'll only cost you more