Originally Posted by
grizz1
Hey Robert, welcome to the GO team. Yep, the 5 Port is a goodie and loves the 0801 pipe. The stock motors seem to like the OS P3 or P4 hotter plugs. 6.5 mm restrictor leaves heaps of power for the buggy with very good run times. You won't loose all the pinch until around the 7 litre mark
Darn these motors are tight !!!
I have dropped the head shimming on my modded 5 port to .6mm total (3 on the button and 1 x 3mm alloy shim) from the stock .8, and gone to a medium plug. Going better than ever. Something you might like to try when the pinch has subsided some. With the 6.5 restrictor I am looking at 9 minutes with a smooth throttle finger. I don't run max race tune, so could probably get 10 + if I pushed the envelope and drove real smooth as well (thats the hard part). Good luck Sunday
Cheers mate, I only have about 3 litres on it so far, and she will still lock up at tdc cold even oiled up turning her over by hand. Funny though, it was never
that tight, I guess I got a 'loose' one. even the first couple of starts I never had one 'pinch' moment requiring the old screwdriver technique... My GRP was far tighter out of the box.
I have a P4 and P5 to try out on the plugs, I have been running a P3 but I want to go a bit colder. The only full set of inserts I have right now are the GRP ones, 6MM 7MM etc. and the 6MM just seems far too small to me
I might give it a go though... I'm just concerned it won't give me enough top end, though the main reason I bought the GO is for bottom end punch - which it has in spades!!!