Best way to clean the cylinderheads

[phrogs]

Ok these babies are full of carbon I would usually take them to the machine shop and have them cleaned there but im not so sure about that since 1) I dont have new intake vavle guide seals 2) dont have the proper tools to remove the secondary butterflys so if I had them cleaned wouldnt this damage the vavle guide seals and the small bearing for the butterflys? I want to get it nice and clean before I put it all back together. I can wire brush the combustion chamber but what about the intake bores they have years of acumulation of carbon which I just dont get I beat on this car alot and let them secondaries open up alot!

[lbs90ZR]

Originally Posted by phrogs

Ok these babies are full of carbon I would usually take them to the machine shop and have them cleaned there but im not so sure about that since
1) I dont have new intake vavle guide seals
2) dont have the proper tools to remove the secondary butterflys

so if I had them cleaned wouldnt this damage the vavle guide seals and the small bearing for the butterflys?
I want to get it nice and clean before I put it all back together.


I can wire brush the combustion chamber but what about the intake bores they have years of acumulation of carbon which I just dont get I beat on this car alot and let them secondaries open up alot!

I cleaned mine with kerosene and a spray gun first. Used carburater cleaner from wal mart for the carbon and avoided all the seals with that(might feel a little goofy after spraying a few cans of that around though) . It disolved the carbon right down to aluminun with enough spraying and mine was pretty dirty in the secondary runners, Only thing I used steel brush on was vavles and then lapped them in, wouldn't reccomend steel brush on aluminum, hog bristle brush would work good but didn't have one if yours is really stubborn.

I'm deactivating butterflys so didn't worry too much about them.

Did you find a valve removal tool?

[Jeffvette]

John, go to the GM dealer and ask for their heavy duty top end cleaner. It will need to sit on the head for a bit, but it will clean evertyhing off. I believe they sell it in a spray as well as a pure liquid as well.

[phrogs]

Originally Posted by Jeffvette

John, go to the GM dealer and ask for their heavy duty top end cleaner. It will need to sit on the head for a bit, but it will clean evertyhing off. I believe they sell it in a spray as well as a pure liquid as well.

Jeff Is this stuff cool for the heads as well?

I have all the valves removed now and I want to clean the ports on the head of all the nasty carbon thats in there.

Im going to get that stuff for the pistons I guess its not going to hurt the rest of the motor so ill have at it.

[phrogs]

Originally Posted by lbs90ZR

I'm deactivating butterflys so didn't worry too much about them.

Did you find a valve removal tool?

Im keeping the system in here because im going to be trading this car and the next guy wants a stock ZR1

As for the tool I used a piece of PVC pipe from the home depot cost me .28 cents