Evans

When changing springs I found that just the very top of the coil was broken on another spring! After a friend came over we started comparing my other broken spring to the one I just found. The original one broke in two places but the top break is almost completely identical...............see for your self.

studderin

iTrader: (28)

918s looks like?

Tainted

iTrader: (9)

better resize that sig pic to 500x150 before the sig guys get you!

Evans

Yeah they are 918's. I had a thread posted about it last week but found another one today while changing to Patriots.
https://ls1tech.com/forums/generation-iii-internal-engine/728254-comp-cams-918-spring-broke.html

2formulas

iTrader: (2)

how do you know if you broke a spring? can you hear it or does the engine stop running or start running like crap or what? Is this a reoccuring problem with 918's?

2formulas

iTrader: (2)

nevermind I found your other thread. crappy comp, 2 years ago when I did my cam install everyone on this board and thunder racing couldn't say enough good things about those springs.

Evans

There has been a rash of breakages with these springs lately.

makWS6

iTrader: (4)

So has anyone hear anything new from comp? Are they going to release a bad batch # and recall or just make us all turn to a different spring?

Yeahdoug

Comp switched manufacturers from Peterson Spring (PAC Racing) in early 2006 to one of our competitors. We made the original 918.

You can get the original 918 still through us. The new part number is PAC-1218.

I would also recommend checking out our PAC-1518. It has the same loads as the 1218, but has extra processing like nitriding to add to its fatigue life and lift capability. It's a very nice spring.

We also have a dual too. PAC-1221.

Evans

Didn't the original 918's go through a series of breakages also?

Yeahdoug

I honestly don't know. I wasn't around then, but from the batch numbers that I've seen from the recently failures. None have been our springs.

GuitsBoy

iTrader: (4)

Yes, back in 2002 or so there were a lot of reported breakages. Comp released teh blue stripe 918's, and for the most part they were a good spring until fairly recently when reports of breakages started popping up regularly again. I had heard rumors that they switched their manufacturer to this thread reinforces that...