wizzo u might wanna look at your valve guides while your in there, if the valve guides wear out, then the valve can move even a bit side to side, that might explain part of your valve seal issues imo.

 

I have seen Supertech's cut the LS seal that they supply. That is a shooting match it seems, sometimes they are fine, others they turn the car into a 2 stroke.

 

Gsc FTw!

 

The car only has 45k miles. No excessive play. I actually contacted Supertech to get there opinion. Turns out the springs I have are the 120lb springs and the inner spring has a smaller inner diameter. They said these are only for very high boost drag racing applications and not for a DD. They said the 95lb springs have a bigger inner diameter and will give more clearance to prevent the seal from popping off. It will also free up some HP. They are selling me the 95lb inner springs only so hopefully this will fix my problem.

 

switched from bc 272's to s2's and could tell a big difference in top end.. though i didnt have bc springs to begin with i put the gsc springs in at the same time as the s2's and havent had any problems so far, and im at 90k miles now and swapped them maybe 4500 ago.

 

yea that makes sense wizzo, you never want too stiff a springs haha, and as far as the fitment issue goes i can see that, well good luck to ya hope you get it fixed, i wouldve personally kicked my car door, if ive had valvetrain issues like yours by now. haha, (knock on wood)

 

I run BC springs here with S2s with no issues! The car previously had BC 272s with the same BC springs. The springs have been in the car for probably 10k miles without any issues. However, if I didn't already have the springs installed I would've gone with GSC. Spend the extra cash for the GSCs for extra insurance.

 

BC ive heard really good things and really bad. All depends I guess but cant go wrong with kigglys.

 

im going with gsc from what i've read plpus im doing s2 cams. Im not revving 10k more like 5k but it's nice to have it there if i need it.

 

Neither, spend the extra money and get yourself a set of Kiggly Beehives. Do it right the first time and never have to worry about them.

 

Some people swear by gsc some swear by kiggly i think there both good.
I guess like everything in life decisions decisions.

 

no mention of them so far, but i went FP beehives springs. from what i read they are very similar to the GSC's.