What do you mean by knurled, as in from top to bottom the guide has a groove all the way down it which will allow oil to drip into the intake ports like they always do, which then in turn makes the motor knock since that oil lowers any fuels octane rating.
If that’s the case then I would take that extra 150 you where willing to spend on valves and get .030” wall guide liners installed!
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs!
And he was not talking about 1/8 or 1/4 mile ETs!
1) 1940s 100% silver 4 cup tea server set.
Two dry rotted 14 x 10 Micky Thompson slicks.
1) un-mailed in gift coupon from a 1972 box of corn flakes.
Two pairs of brown leather flip flops, never seen more then 2 mph.
Education is what your left with once you forget things!
|