Ugh -Looks Like I have a Burned Exhaust valve, Just in time for Okteenerfest Options

[HAM Inc]

I think the original 2.0 heads are no longer worth the money to repair. They always seem to crack. I have three sets of 2.0 heads and the all have cracks. Once you get them welded up a complete valve job with new seats and you're in the $1000 range and they're just going to crack again. It's a shame that nobody is making new 2.0 heads with modern alloys that are more durable. Thank goodness we at least have AMC heads to build up as replacements. Anyone have any cracking issues with AMC heads?

So far I have yet to see an AMC head crack.

Seen them come back for service from track cars that ran over 1400* EGT's. Warped them and killed the valve job, but they didn't crack.

Seen them abused on CA busses with clogged catalytic converters that heated the heads so high it degraded the 1800* rated exhaust seats we install. Again, warped but not cracked.

They are very good castings, but the parts are garbage.

If I ever do this again I will likely go the no 2.0 head.

They're not cheap, but they are spectacular, more powerful and beefier than the O.E. castings.

I looked into them so I know. Really was not planning on this change but I think I will plan for the expense.

You won't regret it! (IMG:style_emoticons/default/driving.gif)

[Mblizzard]

So is everything back together? Jack stands back in the tool box?

You know how hard it is to get a 914 off jack stands!

Got it started (on jack stands) for a moment to verify it runs. Still have to replace the CV boot I ripped somehow and put the shift linkage back in.

Looking at the head it is clear it got too hot. So I am installing a Dakota digital cylinder head temperature sensor as well.

I took some extra time and tried to neaten a few things up as well.

[ChrisFoley]

Still have to replace the CV boot I ripped ...

I didn't ship anything the last couple days so its still on my desk.
(IMG:style_emoticons/default/sad.gif)

[Mblizzard]

Still have to replace the CV boot I ripped ...

I didn't ship anything the last couple days so its still on my desk.
(IMG:style_emoticons/default/sad.gif)

No issues Chris. Wont have time to wok on it until next week anyway. But it is still a great thing to have vendors that don't judge your mistakes. It took a lot of effort to rip a CV boot.

Also it is great to be able to reach out and get what you need. Thanks for all of your help. The Evo will sound much better with all cylinders firing!

[stugray]

It took a lot of effort to rip a CV boot.

Let me guess: Jacking the engine up with the axles touching the top of the trans??

[Mblizzard]

It took a lot of effort to rip a CV boot.

Let me guess: Jacking the engine up with the axles touching the top of the trans??

We have a winner!

Cant tell you how many times I have taken an engine out of a 914 and put it back with no issues. But the whole process seemed to be jinxed this time.