Comp Cams 918 spring broke......
Im batch # 29120RT with 1500K, bought about year and half ago. I'm just on a lil TR224. This is crazy i cought this post just before I was heading for the track, now I'm leaving the car home and just going to watch. I hope Comp cams does something about this soon because If I damage my engine..... wont be happy! I suppose I'll look for another brand spring soon.
Staging Lane
Joined: Sep 2005
Posts: 52
Likes: 0
From: waco, tx
this is a big enough scare that thunder racing and summit racing both have patriot golds on backorder.
Props to Thunder for getting me the patriot "extreme" golds here quick to get my cam in.
918's are going back to summit. Just glad i caught this because they were ordered and goin on this weekend.
Being a ls1tech junkie may have saved me a motor <T-shirt idea
Props to Thunder for getting me the patriot "extreme" golds here quick to get my cam in.
918's are going back to summit. Just glad i caught this because they were ordered and goin on this weekend.
Being a ls1tech junkie may have saved me a motor <T-shirt idea
***UPDATE***
Well i finally got time to swap out my crap 918's to PAC 1518's . Well
the second i pulled my valve covers i noticed the spring pictured below
My batch number was 49826 and i purchased these
918's in october 06' . Here is another victim to add to
the list of broken Comp Cams 918 beehives
Well i finally got time to swap out my crap 918's to PAC 1518's . Well
the second i pulled my valve covers i noticed the spring pictured below
My batch number was 49826 and i purchased these
918's in october 06' . Here is another victim to add to
the list of broken Comp Cams 918 beehives
Originally Posted by vettenuts
So how about a picture of the PAC's before you put them in 
I can tell you thoughthat there is quite a difference just by looking at the PACs and 918's
next to each other . The PACs look and feel a whole lot better in quality
than Comps 918's .
Just lost my 6.0. Basically, the top coil broke off like all the pics we've seen, the retainer screwed itself into the broken spring until the valve hit the piston (about 1/3 of the way into the spring). Then the keepers came loose and the **** hit the fan.
I had no idea about the defective springs until this happened. Why didn't Comp notify their customers!?
I had no idea about the defective springs until this happened. Why didn't Comp notify their customers!?
Staging Lane
Joined: Jul 2008
Posts: 94
Likes: 0
From: Chicago, IL
Was there ever any resolution with Comp cams about the 918s?
I know I'm bringing this thread back from the dead, but I just had a spring break on me while test driving a car I'm looking to buy. The motor didn't lock up, it felt like it lost a cylinder, but still idled and drove. I flew back home not purchasing the car, but am still interested in it. The owner said he found a broken spring after finding zero compression in one of the cylinders.
I was confused about which springs to replace with (I'm an LSx newb, and the car has GTP ported 5.3L heads on it.. not sure if all LS-based heads had interchangeable springs), so I emailed TSP about a suggestion.
Jon @ TSP suggested I pick up a set of Comp 918's as they will just drop in and work with my current TSP .589/.589 cam.
Has this spring breakage issue been resolved? I have half a mind to go with the Patriot Golds from ws6store, but don't want a noisy valvetrain and heard that duals are noisy. I certainly don't want a BROKEN valvetrain
Are comp 918's okay again?
I know I'm bringing this thread back from the dead, but I just had a spring break on me while test driving a car I'm looking to buy. The motor didn't lock up, it felt like it lost a cylinder, but still idled and drove. I flew back home not purchasing the car, but am still interested in it. The owner said he found a broken spring after finding zero compression in one of the cylinders.
I was confused about which springs to replace with (I'm an LSx newb, and the car has GTP ported 5.3L heads on it.. not sure if all LS-based heads had interchangeable springs), so I emailed TSP about a suggestion.
Jon @ TSP suggested I pick up a set of Comp 918's as they will just drop in and work with my current TSP .589/.589 cam.
Has this spring breakage issue been resolved? I have half a mind to go with the Patriot Golds from ws6store, but don't want a noisy valvetrain and heard that duals are noisy. I certainly don't want a BROKEN valvetrain
Are comp 918's okay again?
Just get the PAC 1518's and be done with it ! Dont gamble your motor by
putting in a set of 918's . If you do youll always be wondering if your springs
are gonna break PAC's are better quality and the piece of mind is worth
the extra $$$
putting in a set of 918's . If you do youll always be wondering if your springs
are gonna break
PAC's are better quality and the piece of mind is worththe extra $$$
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TECH Senior Member
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
Was there ever any resolution with Comp cams about the 918s?
I know I'm bringing this thread back from the dead, but I just had a spring break on me while test driving a car I'm looking to buy. The motor didn't lock up, it felt like it lost a cylinder, but still idled and drove. I flew back home not purchasing the car, but am still interested in it. The owner said he found a broken spring after finding zero compression in one of the cylinders.
I was confused about which springs to replace with (I'm an LSx newb, and the car has GTP ported 5.3L heads on it.. not sure if all LS-based heads had interchangeable springs), so I emailed TSP about a suggestion.
Jon @ TSP suggested I pick up a set of Comp 918's as they will just drop in and work with my current TSP .589/.589 cam.
Has this spring breakage issue been resolved? I have half a mind to go with the Patriot Golds from ws6store, but don't want a noisy valvetrain and heard that duals are noisy. I certainly don't want a BROKEN valvetrain
Are comp 918's okay again?
I know I'm bringing this thread back from the dead, but I just had a spring break on me while test driving a car I'm looking to buy. The motor didn't lock up, it felt like it lost a cylinder, but still idled and drove. I flew back home not purchasing the car, but am still interested in it. The owner said he found a broken spring after finding zero compression in one of the cylinders.
I was confused about which springs to replace with (I'm an LSx newb, and the car has GTP ported 5.3L heads on it.. not sure if all LS-based heads had interchangeable springs), so I emailed TSP about a suggestion.
Jon @ TSP suggested I pick up a set of Comp 918's as they will just drop in and work with my current TSP .589/.589 cam.
Has this spring breakage issue been resolved? I have half a mind to go with the Patriot Golds from ws6store, but don't want a noisy valvetrain and heard that duals are noisy. I certainly don't want a BROKEN valvetrain
Are comp 918's okay again?
I stopped buying Comp springs, so it definitely got resolved for me.
I never saw Comp publish a bulletin or notice on the cause of the defect and corrective actions taken to prevent a recurrence. Therefore, when it came time to buy springs I narrowed the list to PSI and PAC.
By way of comparison, PAC had one glitch in a specific batch of their 1518 springs and was all over it. Very public and up-front about the error, and emptied their supply chain of the defective lot #s.
I never saw Comp publish a bulletin or notice on the cause of the defect and corrective actions taken to prevent a recurrence. Therefore, when it came time to buy springs I narrowed the list to PSI and PAC.
By way of comparison, PAC had one glitch in a specific batch of their 1518 springs and was all over it. Very public and up-front about the error, and emptied their supply chain of the defective lot #s.
