Originally Posted by
AndreasNever had a problem with any JWT S3, S4, S5, C1, C2 and C3 cam shafts.
Please tell me where you had a problem with this cam shaft.
my S3's were fine. no problems at all 'cept a little pitting later in their life
. i bought those new, just before the S4's were released
then ~late 03-early 04, while mike k. was still heavily involved pushing jwt to develop new products for the se-r's, the S5's were released. these were touted/pushed as the biggest cams available for the de with the stock valve train. so, of course, i HAD to have them. and the "big cam" ecu program to replace the s3/s4 cam program on my jwt ecu.
welp, the stock valve train lasted ~5k miles before a spring broke (at very low rpm) causing catastrophic damage.
i'm not the only one to have problems with the S5's. i recall a canadian with similar issues.
it's all on the old forum for anyone wanting to refresh their memory
suppose i could look for the positive in this story...i replaced the toasted de for a VE i bought from you spring '05