98turbls1

iTrader: (17)

Well just like I thought, my buddies springs turned out to not be Patriots... My question is now have many people had problems with the 921's??? I'm wondering if something caused this to break or if they have a history of them snapping... He's thinking that it was a freak accident but I just want to make sure...

Evans752

iTrader: (29)

I've had them on my car for 1 year and a half and had no problems.

98turbls1

iTrader: (17)

What were you running with them??? What size cam??? Any forced induction or crazy setups?? He's running an STS and putting around 500rwhp down...

Evans752

iTrader: (29)

FM13 from Futral Motorsorts, and rev the car to 6500RPMs and stock LS6 long block. Car mad 422rwhp.

98turbls1

iTrader: (17)

Have you heard of a defective batch or people that have had problems with them??? We're just trying to see if it would be beneficial to change them out for patriots or just replace the one....I'm thinking that he just over revved it or something....Plus the added pressure of the boost put extreme pressure on them that broke it... The valve isn't bent or anything so we're good on that...I just would rather do the job once and not worry about it.... My thought is if one went there is a possiblity that more could go...

Evans752

iTrader: (29)

I heard a while back that they was a bad batch and as far as the blower car your buddy has I would think that he just over rev but I dont know for sure.