Anybody ever had this problem? I know the cheap variants of manifold are prone to it but I never expected my HKS's to let go, they have split around 2 of the 4 pipe welds at the collector.

 

Are they deffo genuine HKS? If they are, then that is just shocking considering the price they charge. I have a set and am now seriously worried....

 

Recently replaced a cheapo set off mine with a set from RCM hope these don't go the same way. I suppose that the constant heating and cooling will have some detremental effect on the metal.

 

yep, defo' HKS's, I thought it was blowing from the joint between the cylinder banks but when I got underneath with a good torch I saw this dirty great big crack all the way arround!
Im going to get a mate of mine to tig it back up but need to know what grade of wire to use so it doesnt happen again.

 

Were they wrapped ? if not wrap them so when they get hit by water, they don't get a direct shock.

Aslo check your EGT's aren't too high, the biggest cause of headers cracking.


Mark.

 

I bet your right, the car is overfueling way to much on tickover, I have a alloy sump guard protecting that area of headers but saying that everything looks pretty toasted, not sure weather its the leak or somethings been on fire!