GSC S3 cam broke
Wow, this only went up 10 hours ago and we're already into page two. I imagine gsc and map won't bother posting, but rather make contact with the OP directly. Both are great companies and both have great customer service.
I'm sorry to hear about the failure and I hope the resulting damage is minimal.
I'm sorry to hear about the failure and I hope the resulting damage is minimal.
Account Disabled
Joined: Aug 2010
Posts: 444
Likes: 0
From: with idiots
Very true no no one chimmed in for this map or greg(gsc)I'm curious on how they broke unless the install wasn't done right.
Last edited by 4doorstreetbike; Aug 15, 2010 at 08:15 AM.
Guys - there have been tons of cam failures from GSC and Cosworth....and then Kelford...They all supposedly use the same core...there was a hypothesis the cams were failing due to a MIVEC oil groove design / machining issue...
Clearly something is up with the aftermarket camshaft manufacturers as you never hear of an OEM cam breaking...
Clearly something is up with the aftermarket camshaft manufacturers as you never hear of an OEM cam breaking...
Here is just one post (there are many like this) : https://www.evolutionm.net/forums/wa...-port-ftw.html
You may want to read through this thread : https://www.evolutionm.net/forums/ev...snapped-3.html
The only MIVEC cams that I have not seen / heard failing are some uber expensive / custom European cams, FPs, HKS, and JUN....
Last edited by cij911; Aug 15, 2010 at 08:44 AM.
Search a little harder / better...The Cosworth cams were some of the first reported failures...Then GSC....Then Kelfords....
Here is just one post (there are many like this) : https://www.evolutionm.net/forums/wa...-port-ftw.html
You may want to read through this thread : https://www.evolutionm.net/forums/ev...snapped-3.html
The only MIVEC cams that I have not seen / heard failing are some uber expensive / custom European cams, FPs, HKS, and JUN....
Here is just one post (there are many like this) : https://www.evolutionm.net/forums/wa...-port-ftw.html
You may want to read through this thread : https://www.evolutionm.net/forums/ev...snapped-3.html
The only MIVEC cams that I have not seen / heard failing are some uber expensive / custom European cams, FPs, HKS, and JUN....
Cosworth, Kelford, and Comp use the same cam cores but Comp did the fillets different from the outset. We have S3s in our drag car and have for 2 years. HKS and JUN use their own supplier for billets. GSC billets come from the UK where Piper and some of the other ones are coming from.
Before this turns into another thread like the "My intake cam snapped" thread, lets see some pix and try to determine what happened. How long was the cam bolt, where did the cam break exactly, what springs, and what was belt tension like on the timing belt?
Woooow! Are you freaking serious man?!?!?!? How did they break from doing a cam swap? I know you took the kelfords out to swap the S3 cams in. Wish I could have been there to help you out man. Hopefully you can get everything sorted out with MAP and GSC.
Sounds to me like you were tighting down the cam caps with the cam not seated correctly. The extra tension on the cam can cause the shaft to snap (it is a cast shaft). I haven't seen or heard of an issues with the I4 cams having a problem on install, but i will tell you the longer I6 (2JZ or RB) cams we have people break them all the time on install. Please give me a call on monday and we will get you a single intake cam.
Sounds to me like you were tighting down the cam caps with the cam not seated correctly. The extra tension on the cam can cause the shaft to snap (it is a cast shaft). I haven't seen or heard of an issues with the I4 cams having a problem on install, but i will tell you the longer I6 (2JZ or RB) cams we have people break them all the time on install. Please give me a call on monday and we will get you a single intake cam.