Duc's Hybrid build
#31
Rennlist Member
#33
Thread Starter
I have a question for the engine builders out there. not that i have a pretty clean block, im going to start by rebuilding the oil pump and installing it. whats the best way to clean the oil passages before i slap that baby on the block?
#36
Rennlist Member
remember, i have never used the old style pan, and have had no issues at all at any level.
there is something to be said for the restriction not being that great for oil recovery, with the old style. I made Petty's motor with the old style, because I dont think its a huge isssue, plus, the baffle chambers are substantial in the OB pan. however based on what Ive seen over 12 years of full racing seasons, the new oil pickup system is just fine.
there is something to be said for the restriction not being that great for oil recovery, with the old style. I made Petty's motor with the old style, because I dont think its a huge isssue, plus, the baffle chambers are substantial in the OB pan. however based on what Ive seen over 12 years of full racing seasons, the new oil pickup system is just fine.
#37
Rennlist Member
make sure you bolt on the bare heads, and depress each valve with clay on the valve reliefs to make sure there is no contact at the edge of the valve cuts. I show how to do this in my petty build thread.
it requires a box wrench, and use one of the cam tower bolts with a 1"diameter washer. lever the valve down by the valve end . should move down about .3".
how deep were the valve cuts? i usually use the euro 85 depth, of .175"
it requires a box wrench, and use one of the cam tower bolts with a 1"diameter washer. lever the valve down by the valve end . should move down about .3".
how deep were the valve cuts? i usually use the euro 85 depth, of .175"
#39
That looks nice and clean.
#41
Rennlist Member
they might be better at the modeling, as my experience for 4 sets ive done, they all were off a little. (basing the design of their jig on just an example 80euro piston). again, its an easy test, two nuts on the heads , and depress a valve on a piston that is at TDC. (using some clay or clay).
the problem is transfering the position to a 100mm piston vs the 97mm piston.
anyway, checik it out and let us know!
the problem is transfering the position to a 100mm piston vs the 97mm piston.
anyway, checik it out and let us know!
#42
Rennlist Member
#44
Nordschleife Master
The pistons are already coated with that ferro stuff aren't they?
Replacing the original coating or putting something over it doesn't sound like a good idea to me.
Replacing the original coating or putting something over it doesn't sound like a good idea to me.
#45
Rennlist Member