1.8t

Can anyone answer this?

405HP_Z06

iTrader: (11)

IN MY HUMBLE OPINION, it's hard to say either way. I would inspect the rollers very closely for any observable markings that could indicate a flat spot or scuff; also, roll each roller and check for rough spots. If anything is questionable, replace it.

1.8t

^ Thanks

$ho_tyme

iTrader: (3)

I would replace if you can there not that pricey,also I would recommend inspecting the cam. I know there not a flat tappet but a little nick can cause alot of havoc.

1.8t

I will be pulling the cam and inspecting it today.

1.8t

Update

Ok everyone, I would first like to thank corvetteforum member "Glass Slipper" for coming by yesterday and helping determine the cause of failure of my chain. I would go into details, but the short and skinny is we now feel that I had a defective part from the manufacturer.

It appears that the pin, which wasn't flared enough on one end to keep it from slipping through the link, worked its way through one side of the link(the link that was bent and not broken). After the forces were able to pull the pin free of that link, I then experienced catastrophic failure on the other link(the one that is broken).

Aside from coming to this conclusion, we also deteremined my failure was not created by cam walk(wasn't very difficult to make that assertion). Matter of fact, 2 of my cam retainer torx bolts are completely stripped because they would not budge. Not quite sure how in the hell I am going to get those 2 out actually. <- Open for suggestions on this one.

Jimmyz

iTrader: (3)

Replace the lifters Mike. Best practice for sure.

Damian

iTrader: (89)

Glad to see you're getting it figured out Mike. Now quit posting on the board and put that pig back together

1.8t

^ Shut up before I call you for more help lol.

BTW, for anyone in the Altanta area even considering some upgrades, you owe it to yourself to give Spartan Perf. a call. I will make a more formal thread once I get my POS back together, but his assistance, even with me not spending 1 cent with him, has been invaluable. Your the man.

Cobra4B

iTrader: (9)

So are the pistons ok? Im assuming a few little nics wont hurt anything?

camarorat

iTrader: (8)

what is the part# for the ATI damper, and the new style TC damper? Was your car NA or FI?

1.8t

Well, if I am going by the book, then they should be pulled and replaced. However, many engine builders have told me they have seen worse come out of running combinations and be re-used. Guess we will see how tough these pistons are, but *knock on wood* I don't "think" I will have any problems(and pray).

1.8t

The car was n/a and if you get on scoggin dickey, they list the new style TC guide for every car 05 and newer. Unsure of the part #

Rob 's 73

My pistons look like that after the first chain incident. I smoothed out the edges and put it back together. No issues until the chain broke again which had nothing to do with the pistons.

See5

iTrader: (53)

I would just smooth out the edges of the dings caused by the valves and let them go.
Your assumption that you can attribute the chain failure to a defective chain is what I hoped before my second failure.

DrkPhx

iTrader: (15)

Have you checked the valves to see if they're bent? Some of those valves more than "nicked" the piston tops, I would check them.

Damian

iTrader: (89)

Pistons are good to go. Consider it some home made valve reliefs

ATLSS

iTrader: (7)

I second that, although the means of obtaining the valve reliefs is a little ghetto.

All joking aside, I'm glad that you've worked through this issue Mike and I think that you'll definitely know your car much better now...

Buy a set of TFS heads and put that thing back together. I heard that you were running 11.20s? when it broke... so you may have a 10 second car with a better head...

Good luck.

DrkPhx

iTrader: (15)

These two don't look so good. It's ultimately the owners call, but I would even check the connecting rods just to play it safe. You never know what happened. I would still think the valves may be bent.

1.8t

So you are saying you have broken your timing chain twice? Did your failure look like mine both times?