Stillen chargecooler tank leaking

Maddog

I got the opportunity to check Blobbish's car today , his cap is different , was much tighter than mine and the rubber washer looks thicker, also the edge of the top of the tank has a wider shoulder meaning greater surface area for the washer to seal

My car has an early kit around three years old and has done about 30,000 miles , his kit is new

It could be that the cap has been over tightened in the past and the thread is damaged.

I have ordered some nitrile sheet so will fabricate some new thicker washers and see if that helps

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Eibach sway bars and 25mm spacers, Stillen kit , Level 10 trans, Quaife diff