too much pitting?

ive got a head sitting here in front of me that i heli-coiled every bolt hole on many years ago myself.took it apart the other day after many years of hammering it hard the only problem i found was a bad valve spring,no problems with any heli-coils.when you ream out those holes for heli-coils there will be small metal shavings unless you can seal up the lifter bores real good i would remove valves and springs.oodluck,happy wrenching!

Yeah, I just saw that there's drilling invilved. Lickily I just got a heavy duty craftsman press. What worries me now is how exact the new holes have to be...... It sounds like its a no-breainer for you. I am no machinist though.

mark the depth of the hole on the drillbit with a piece of electrical tape take you time and drill slow,use plenty of lube.blow metal shavings out of hole and install helicoil.once you do the first couple holes it should go pretty easy ,just remember to take your time. goodluck,happy wrenching

Wireman is right
It is not a big deal to install the inserts, and as far as the aluminum being to old and corroded, apparently someone thinks that aluminum goes bad with age

If you have been getting bad advice (and apparently you have) it has not been on KZR. If questionable advice is offered here there is generally someone challenging it :evil:
Sometimes it's just a matter of differing opinions though.
(But we still argue)

Duck wrote:

that's better...

I'm with Jay, fix it. I've seen auto heads that looked better and still leaked.

-Duck<br><br>Post edited by: Duck, at: 2006/02/25 16:09

Are you refering to resurfacing?

wireman wrote:

take you time and drill slow,use plenty of lube.blow metal shavings out of hole and install helicoil.once you do the first couple holes it should go pretty easy ,just remember to take your time. goodluck,happy wrenching

Sounds like I should have the drill on slow RPM?

Can I just get the basic 6mmx1 at Autozone? or are some better than others?

Post edited by: guavatone, at: 2006/02/26 02:38

there are differant brands i think it comes down to how they are installed,as long as you take time and follow the instructions you shouldnt have any problems.yeah we get a little colorfull ,once in a while on here but for the most part we play petty well together.:whistle: bwaha.aluminum is soft metal run your drill at a medium to high speed to keep the hole cleaned out just take your time drilling and dont force it.

wireman wrote:

i heli-coiled every bolt hole on many years ago myself.took it apart the other day after many years of hammering it hard the only problem i found was a bad valve spring

Did you Helicoil the cam cap bolt threads?

Will any brand (correct size) helicoil do?

wireman wrote:

i heli-coiled every bolt hole on many years ago myself.took it apart the other day after many years of hammering it hard the only problem i found was a bad valve spring

Did you Helicoil the cam cap bolt threads?

Will any brand (correct size) helicoil do?

i heli-coiled every hole on it,was having problems with exhuast studs on head,didnt want to keep pulling head so i heli-coiled every damn hole including caps,scratch that the intake bolt holes arent done but they rarely come off.they make other brands but ive never had problems with heli-coil brand personally.

So you helicoiled the cam cap threadsand other threads but not the carb threads?

ive had the cams and exhuast off many heads over the years ,vary seldomly do carb boots need to be removed to work on engine.