I am about to introduce my b16 head to my newly built b18c1 botttom
Well, my valves are coated with carbon, pretty thick (00'SI head, 50k) I was wondering how i can get them back to bare metal?
TIA-

 

good question, i would like to know as well

 

Pull the head appart (make sure you keep track of what valve came from where) and use some gun cleaning solvent. CRL or CLR is what it's called. Use a brass bristled brush to do one valve at a time. Tedious, but it'll do the job. Hell, might as well give the valve seats a makeover too since you're going to have it all appart anyway.

 

okay, is there any way to clean the face of the valve. I didn't want to pull it aprt until i replace the valves-

Can you use solvent and the brush on just the face... with the valves still in the head?

 

i used brake cleaner and like a small brush or something to brak the stuff loose.then put a polish bit on my dremel and cleaned it allup nice

 

Sea Foam it maybe?

 

I am going to give it a shot with the dremel- I'll post some before and after pics!




Modified by Jester_Si at 1:31 PM 5/2/2004

 

pics of when i started-

I will post pics after i am done too. So far i can say- brash brush, carbon steel brush, brake cleaner, sea foam, aircraft remover...don't do ****. I found a very fine sanding disc that does wonders- (brass brush for a nice finishing touch though)

 

thats how mine looked, turned the head over, poured seafoam in the chambers and let it sit, put more seafoam every 30 mins or so after about 3 hours hit it with a brass BBQ cleaning brush..... looked perfect

 

A friend of mine just took his head to a machine shop. They checked and cleaned it for around 100 bucks, and it looks brand new. Probably much cheaper to clean it yourself, but just throwing the option out there.

 

i tried sea-foam. Now i am just going to polish them- Have some time to kill anyway-

 

Two words for you-> OVEN CLEANER.
Spray it on, wait then minutes, carbon wipes off.
Just be careful you dont leave any carbon deposits on the valve seats,
since it tends to come off in fairly large flakes.

 

I can get you some of this stuff....don't know how effective it really its though:





here's a slide show:

click!

 

If you have a grinder use that wire brush thing next to it. That's how they were doin it at the machine shop I went to and they came out purty

 

Not sure what method your going with but just make sure you don't leave any sharp edges.....

 

I have always used the wire bursh wheel on the bench grinder. The oven cleaner looks to be a good alternative if you don't want to take the valves out. Just use the wire brush with caution

 

This is mid point, i bought a dome shape polishing bit tonight to finish the inner portion.I also got a big disc to hit the tops again and make them uniform. Coming along pretty good-

I am leaving the intake valves alone? (other than a good cleaning)

 

a wire wheel on my die grinder did the job for me... man it practically looks brand new...