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6.5L Turbo Diesel 1992-00 6.5L Turbo Diesel - Welcome to the Internet's first discussion forum for the 6.5L diesel engine. Tips on performance, cooling, fuel economy, troubleshooting and more.

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  #41  
Old 05-16-2018, 06:52 AM
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Another point to ponder would be to get your hands on a set of well used AMG heads and give them a really good going over to see wasssssup.

I have a feeling that the best solution is to grab a set of new brand X heads, bolt them on and just run them..


The flawed GM heads would generally go 200K miles give or take.

Some cracked early, some ran far longer.

The type of usage the rig was subjected to certainly could change the life expectancy, but overall the 200K mark is a common jumping off spot for the gaskets to fail.

I had 2 used Burbs and the Dahoooley and these numbers were pretty close.

One Burb went 237 K ...The other went 267 K and the Dahoooley was a crap shoot as the engine had been changed to a Goodwrench and the bottom end failed (Main web cracked into the water jacket)


Gawd only knows what the real lowdown is on these after market heads, but the various brands seem to be staying around.

Clearwater has been in the game a long time now.

I spoke with AMG about the various parts (blocks/heads) that are on the market, and they told me that they have looked the stuff over well.

The only issues they had were that the consistency of quality was all over the map... being ...some good ..some bad and some ugly...


I wish I had more info for ya..

Good luck
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  #42  
Old 05-17-2018, 09:19 AM
ronniejoe ronniejoe is offline
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and have not been overheated or run at 20 PSI boost or ???? whatever other form of torture some clown can dish out.
Gee, I wondered why my nose was big and red...
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  #43  
Old 05-17-2018, 09:20 AM
ronniejoe ronniejoe is offline
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I dropped $2100 last fall for a set of P400 heads.
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  #44  
Old 05-17-2018, 10:24 AM
JeepSJ JeepSJ is offline
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I dropped $2100 last fall for a set of P400 heads.
If nothing else had gone wrong with this, then I might be able to do that. Right now that isn't in the budget.
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  #45  
Old 05-17-2018, 11:11 AM
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I hate to brag...but the heads I got for Dahooooley were the normal pickup arranged P400 heads that were installed on a P400 that was ordered for a civvy H1 by mistake..

AMG sent the fella a fresh set of the proper angled bolt heads with gaskets and bolts and told him to keep the pickup style heads.

Got them suckers with zero hrs for $600 for the pair..
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  #46  
Old 05-23-2018, 10:32 AM
JeepSJ JeepSJ is offline
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Another set of "guaranteed" good used heads with cracks in all 8 chambers, with many cracks going through the intake and exhaust valve seats.

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  #47  
Old 05-23-2018, 10:53 AM
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Seems like you just can't catch a break! A world I'm all too familiar with.
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  #48  
Old 05-23-2018, 11:29 AM
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Originally Posted by JeepSJ View Post
Another set of "guaranteed" good used heads with cracks in all 8 chambers, with many cracks going through the intake and exhaust valve seats.

Tough break... I too have a set of heads that I bought with the assurance that they were crack-free. I found at least one crack between the valves so far. They'll need to be thoroughly checked out by the engine shop.

With what it costs to ship these heavy items anywhere, I have begun recommending people ask that the heavy part they're considering be QC checked by an engine shop before dropping any bills on it. That'll be cheaper than dealing with all the shipping costs.
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  #49  
Old 05-23-2018, 02:36 PM
JeepSJ JeepSJ is offline
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Tough break... I too have a set of heads that I bought with the assurance that they were crack-free. I found at least one crack between the valves so far. They'll need to be thoroughly checked out by the engine shop.

With what it costs to ship these heavy items anywhere, I have begun recommending people ask that the heavy part they're considering be QC checked by an engine shop before dropping any bills on it. That'll be cheaper than dealing with all the shipping costs.
So far the shippers have been eating the costs. I would think that they would test them before selling them. I'm sure they are betting on someone receiving the head and bolting it on and running it, and not actually crack checking them.
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  #50  
Old 05-23-2018, 02:49 PM
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JUST AN FYI

Get a set of the Clearwater heads, bolt them on and enjoy...

I went through several sets of heads back in the days of the Dahooooley and the used stuff was just junk.

Out of 4 sets of heads I got ZERO good ones.

The last trip through, that rig got an AMG BLOCK and AMG heads.

The CW heads went on the Burb...
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