Hi. Can anyone guide me with regards to metal gasket? I have a RB25DET NEO and are looking at Cometic gaskets.
They have 4 sizes and are unsure which one should I go for:-
i) 86mm, 1.3mm thick
ii) 86mm, 1.5mm thick
iii) 87mm, 1.3mm thick
iv) 87mm, 1.5mm thick
My motor is basically stock internally. It only have bolt on mods like exhaust and intake plus an up in boost. Perhaps in the future it'll carry bigger boost via a bigger turbine but basically internally will remain stock.
Which gasket should I go for? Stock bore of the motor is 86mm.
Thank you.