jimbob8915
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What are the Gen 1 intake and exhaust valves made of? I know you can grind the seats but can you grind the 45 degree valve face?
Gen 1 valve face grinding
- Thread starter jimbob8915
- Start date
Berlin Germany
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gen1 :
valves made of usual "valve-steel" .
their valve plates can/may be regrinded
but be careful - if you grind too much, and also reground the valve seat, it can ! happen
that the shims have to be a lot thinner than the ones previously installed.
if you then get into the range of shim sizes of 245 or even smaller, you should shorten the valve stem end(s) by 1-2/10.
gen2 :
NOT & never and , as far as i understood , forbidden by suzuki - valves are made of titanium - only their seats can be grinded.
valves made of usual "valve-steel" .
their valve plates can/may be regrinded
but be careful - if you grind too much, and also reground the valve seat, it can ! happen
that the shims have to be a lot thinner than the ones previously installed.
if you then get into the range of shim sizes of 245 or even smaller, you should shorten the valve stem end(s) by 1-2/10.
gen2 :
NOT & never and , as far as i understood , forbidden by suzuki - valves are made of titanium - only their seats can be grinded.
202mphbusa
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First it is hard to get all the seat and valves close to the same height
When I get a head back from HMP or PortTech all the shims end up being very close to each other
Do it by hand and your shims will be all over the place
jimbob8915
Registered
I have Neway cutters. Where were these a few years ago LOL. They are really nice tools. I made a jig out of a block of Delrin on my mill with a perfect 45 degree cant.
jimbob8915
Registered
I barely took off anything. There is a tiny bit of light coming through the middle of the face. Lapping should do it. I now made a 30 degree angle jig to do the back cut on the intakes. I am barely touching the face and I change the grinding wheel after every valve.
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