too much pitting?

If I am seeing this on the exploded diagram,
it's hard to tell...

Take a look at your head. There may be a
flat spot on the underside of the casting on
each side(intake and exhaust) that is near
the chain passage and just under part of
the camshaft that is rough(not a bearing
or cam surface).

If it's there you can use some long
visegrips to seat the cam in the bearings
befire you put the caps on. This will
allow the caps to fit all the way over
the guide pins so you won't be pulling the
cap down with a small number of engaged
threads.

-Duck

Duck it took me a couple of reads to undertand your last coment. I think what you mean is that there is a way to hold the cams down with vise grips so that the cam cap bolts are not trying to bear down on the caps ( which may cause a denger of stipping the threads). I thik those spots on the head for vise grips are the air passages underneath the cam area, right? And the other side being the actual cam, correct?



The thing is that I would rather not find out the hard way ( after setting up timing and caps and such) that I need to helicoil. I am feeling it's a safer bet to just helicoil 15 threads and be done with it.

wiredguy...I did rethread with a 1/4" tap on one thread. Do you think the 8mm Helicoil will be OK here or should I find another option?

Thanks all.

heli-coil set should come with the right tap or tell you which one to use,use what manufacturer says to use.

Wireman is dead on right .. I have done many helicoils on myHondas ,,,every hole for a cam cover ..I have bought my 6mm kit from a Napa store , It will come with a tap and tell you the number drill to use ..Use tape as a depth guage as wireman said and with in a couple of holes you will be a pro at it .. It will be Worth the work

allright stick the head in a box and send it to po box 8793 omaha ne 68108 and ill send it back to you ready to go.i could have installed heli-coils,glass beaded and ported it by now!:whistle: :woohoo:

Post edited by: wireman, at: 2006/02/27 08:14

I lightened that last photo a bit more. I hope you dont mind.

this was his left side valve

Duck it took me a couple of reads to undertand your last coment. I think what you mean is that there is a way to hold the cams down with vise grips so that the cam cap bolts are not trying to bear down on the caps ( which may cause a denger of stipping the threads). I thik those spots on the head for vise grips are the air passages underneath the cam area, right? And the other side being the actual cam, correct?



The thing is that I would rather not find out the hard way ( after setting up timing and caps and such) that I need to helicoil. I am feeling it's a safer bet to just helicoil 15 threads and be done with it.

wiredguy...I did rethread with a 1/4" tap on one thread. Do you think the 8mm Helicoil will be OK here or should I find another option?

Thanks all.

wireman wrote:

allright stick the head in a box and send it to HYE TECH UTILITIES INC po box 8793 omaha ne 68108 and ill send it back to you ready to go.i could have installed heli-coils,glass beaded and ported it by now!:whistle: :woohoo:

Sorry for trying your patience wireman. I have the head on my coffe table now, removing valves. Since it's freezin cold, I'll have to wait for a warmer day to drill and helicoil.

Post edited by: guavatone, at: 2006/02/28 02:09

You mean to tell me no machine shop will fill in the pits. I seem to recall a shop in Cleveland hear that did a set of double hump SBC X heads that were pitted to hell. They welded, yes welded or something to that efect. Spray weld sound famillar? Then they re surfaced the head. No problems to this day. I believe it was METALS CRANK that did the work. They also do the same to there crankshafts. They can take a 10 10 crank and put the jornals to stock size again.
Check with the shops in the area you might be surprized. Good luck.

Post edited by: Snakebyte, at: 2006/02/27 05:01

Are you refering to resurfacing?

Depends on how you feel about perfection and do-overs
You may get away with some of that high temp copper sealant that permatex sells. Then again, you may not or it may work but keep nagging away at your mind while you ride...It doesn't cost much to try, aside from time.

-Duck

thats a lot of money to spend getting that head done when you allready have another head sitting there that just needs to be heli-coiled;)