Hello all! Before the winter blizzard kicks in need to iron out a few creases. Have fitted a temporary engine while mine gets forged and it came with an Organic AP clutch (was using Sachs 500nm before) but is slipping - I was wondering if anyone knows whether or not it would be enough for 340bhp as it slips on boost.

Have tried bleeding it 2 man method "PUMP IT.....HOLD IT" etc etc - also tried the spare tyre/gunson method AND tried both methods together - no air bubbles a tall - all fresh fluid through system (was done last year anyway) but still slips on boost but is a lot better than before! Any tips/tricks? or advice before i go and badger my mate for his £500 clutch bleeding kit lol he gonna be so pissed off to see me - no fluid leaking in gearbox from slave cylinder HOWEVER am getting a hissing noise in GEAR...pointing in direction of slave cylinder - but when the system is under pressure wit gunson kit there are no leaks....cheers all! hope my question isnt too dumb for today