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

[Mblizzard]

Long day but found a few interesting things. Which one of these was not firing?



Well new heads going on within only minor issues.



One more,long day then back on road.

[lonewolfe]

Hey Mike! is this a stock size 2.0L motor? It seems to me that 44x38 valves would be too large for a 2.0L. How does the motor run differently with those large valves? What compression are you running and which cam? Are you still running the SSI's with the Tangerine Evo 4 muffler? I bought the same mufflwe from Tangerine after I heard the sound clips from your car!

[Mblizzard]

Hey Mike! is this a stock size 2.0L motor? It seems to me that 44x38 valves would be too large for a 2.0L. How does the motor run differently with those large valves? What compression are you running and which cam? Are you still running the SSI's with the Tangerine Evo 4 muffler? I bought the same mufflwe from Tangerine after I heard the sound clips from your car!

It is a 2056 so the valves are not too big.

Leaving a bit on the table as I am still running stock cam. Will swap cam at some point to get into that 120 hp range.

Running SS heat exchangers. But planning to get the CFR headers at some point.

I had hoped to do cam and heads at the same time but the budget would not allow.

[lonewolfe]

Hey Mike! is this a stock size 2.0L motor? It seems to me that 44x38 valves would be too large for a 2.0L. How does the motor run differently with those large valves? What compression are you running and which cam? Are you still running the SSI's with the Tangerine Evo 4 muffler? I bought the same mufflwe from Tangerine after I heard the sound clips from your car!

It is a 2056 so the valves are not too big.

Leaving a bit on the table as I am still running stock cam. Will swap cam at some point to get into that 120 hp range.

Running SS heat exchangers. But planning to get the CFR headers at some point.

I had hoped to do cam and heads at the same time but the budget would not allow.

I know all about that budget factor. Fortunately, I'm a pretty patient guy. Have you been happy with the Evo 4 muffler?

[cwpeden]

Well engine out and torn down to the heads. Will start diggin in tomorrow.

Of course found more things to fix. CV joint fell apart on the passenger side. WTF? It is always something.

The CVs often 'fall apart' when removing the drivetrain, but was the cage broken?

Cage looked good but the clip on end was gone!

Is the clip really necessary? I would want one installed but I believe the shaft floats laterally in the bearing once installed.

I am pretty sure the clip is necessary. It is rare that parts are added that are not needed and the clip is present on most CV joints I have ever seen.

Pretty sure they serve a purpose...The CV was toast, both inner race and outer.

[r_towle]

Long day but found a few interesting things. Which one of these was not firing?



Well new heads going on within only minor issues.



One more,long day then back on road.

Ignition related?

[Mblizzard]

Long day but found a few interesting things. Which one of these was not firing?



Well new heads going on within only minor issues.



One more,long day then back on road.

Ignition related?

Pretty sure compression related. Less than 100 psi on the black cylinder.

[Mblizzard]

Hey Mike! is this a stock size 2.0L motor? It seems to me that 44x38 valves would be too large for a 2.0L. How does the motor run differently with those large valves? What compression are you running and which cam? Are you still running the SSI's with the Tangerine Evo 4 muffler? I bought the same mufflwe from Tangerine after I heard the sound clips from your car!

It is a 2056 so the valves are not too big.

Leaving a bit on the table as I am still running stock cam. Will swap cam at some point to get into that 120 hp range.

Running SS heat exchangers. But planning to get the CFR headers at some point.

I had hoped to do cam and heads at the same time but the budget would not allow.

I know all about that budget factor. Fortunately, I'm a pretty patient guy. Have you been happy with the Evo 4 muffler?

Extremely happy with Evo. Great sound, well made, seems to add a bit of power right in the mid range, and looked really good!

[76-914]

Long day but found a few interesting things. Which one of these was not firing?



Well new heads going on within only minor issues.



One more,long day then back on road.

Ignition related?

Pretty sure compression related. Less than 100 psi on the black cylinder.

Did the leak down point at the exhaust or intake?

[Mblizzard]

Long day but found a few interesting things. Which one of these was not firing?



Well new heads going on within only minor issues.



One more,long day then back on road.

Ignition related?

Pretty sure compression related. Less than 100 psi on the black cylinder.

Did the leak down point at the exhaust or intake?

Exhaust.

[Mblizzard]

Well hopefully this weekend will see me driving again. It is funny haw many little pats it takes to get this done and how lucky we are to have some really good vendors.

PMB, Aasse, Ecklers, Bruce Stone, CFR, 914 Rubber, and others all supplied parts.

[Mblizzard]

Well looks like it may have been a bit more serious than a valve.

That looks like a scratch that will buff out. Right?

[76-914]

Uhhh, no!

[lonewolfe]

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?

[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.

[craig downs]

That's good to know. (IMG:style_emoticons/default/smile.gif)

[Mblizzard]

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.

[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.

[Mblizzard]

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.

[malcolm2]

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