Diesel Struggles Under Load

[HappyMdRSailor]

Originally Posted by strqaightv8

Alright guys, back in business. Took the head for a second opinion yesterday, that guy couldn't do it but directed me to a race car engine building shop, long story short, so long as it's not cracked I'm all set.

Which means I'm back to the exhaust manifold and cleaning everything else up. Moving forward!


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There ya go !!!

Keep us updated... It would be awesome if you got this thing back together in the $500 range...

[Cheechako]

Originally Posted by strqaightv8

Alright guys, back in business. Took the head for a second opinion yesterday, that guy couldn't do it but directed me to a race car engine building shop, long story short, so long as it's not cracked I'm all set.

Which means I'm back to the exhaust manifold and cleaning everything else up. Moving forward!


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I guess I don't get it.... did the race car shop have a magical way of fixing the deteriorated combustion chamber?

[strqaightv8]

Originally Posted by Cheechako

I guess I don't get it.... did the race car shop have a magical way of fixing the deteriorated combustion chamber?

The combustion chamber is fine, it's the valve seats and exhaust port that were bad. I guess the first guy didn't trust his own work enough. Funny for a place called "cylinder head depot."

Race shop said need to clean up exhaust port, reseat exhaust valve, grind or reseat intake valve, and it's good to go. Dependent on all sorts of variables, of course


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[Terra Nova]

Keep in mind that many race car engines only need to last for 1/4-mile.

[strqaightv8]

Originally Posted by Terra Nova

Keep in mind that many race car engines only need to last for 1/4-mile.

Kinda like how mine only needs to get me to the inlet. So, perfect!


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[Cheechako]

I don't know how a "deteriorated" valve seat can be fixed unless it was just slightly pitted and can be ground out.
However, valve seats can be replaced entirely on a lot of engines.... anyway... hopefully you are on the road to success! did anyone check for leaks/cracks?

[strqaightv8]

Originally Posted by Cheechako

I don't know how a "deteriorated" valve seat can be fixed unless it was just slightly pitted and can be ground out.
However, valve seats can be replaced entirely on a lot of engines.... anyway... hopefully you are on the road to success! did anyone check for leaks/cracks?

Spot on. The one is getting replaced, he said he thinks the other can still be machined slightly and work in situ, otherwise that's getting replaced as well. They're pressure testing it before anything else gets done and well move forward from there


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[strqaightv8]

Tested the exhaust manifold, definitely leaking into the exhaust gas chamber. Gonna take it apart tomorrow and see if it's the manifold or just the gasket.

Something a bit funny came up today. As far as I can tell, this motor doesn't exist. I was looking at replacement manifolds and the parts book shows a different style manifold completely. Mine has a threaded female insert in the end cap that a pipe threads into. The book shows one with a flange that couples to an also completely different mixing elbow.

I classified my engine originally going off of pictures of the motors. There's a stamp in the block,

K3D
.979 L

So, its a 3 cylinder westerbeke with a displacement of .98 liters. According to their website, there were only three models that meet those specs, and none of then are my prime candidate. Wildly different in appearance in fact.

And the only motor that seems to match mine? (By the way, I'm basing this on the fact the alternator is on the starboard side.)

1.1 L.

I'm confounded


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[FlyingCloud1937]

Someone may have converted a generator motor to use as the auxiliary drive. Check that, Also go to Gallery Marine web site in Seattle, give them a call.

They are the best with Westerbeke.


Lloyd

Originally Posted by strqaightv8

Tested the exhaust manifold, definitely leaking into the exhaust gas chamber. Gonna take it apart tomorrow and see if it's the manifold or just the gasket.

Something a bit funny came up today. As far as I can tell, this motor doesn't exist. I was looking at replacement manifolds and the parts book shows a different style manifold completely. Mine has a threaded female insert in the end cap that a pipe threads into. The book shows one with a flange that couples to an also completely different mixing elbow.

I classified my engine originally going off of pictures of the motors. There's a stamp in the block,

K3D
.979 L

So, its a 3 cylinder westerbeke with a displacement of .98 liters. According to their website, there were only three models that meet those specs, and none of then are my prime candidate. Wildly different in appearance in fact.

And the only motor that seems to match mine? (By the way, I'm basing this on the fact the alternator is on the starboard side.)

1.1 L.

I'm confounded


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[strqaightv8]

Originally Posted by FlyingCloud1937

Someone may have...

Thanks for the recommendation, I'm going to keep their number for future help. Got it figured out though, it's a second gen model of the 21, so all of the literature showed pictures of the first gen unit, ergo I never recognized it. Nice and easy now though!


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[strqaightv8]

Quick update: head tested a-ok, they're moving forward with the new seats. Manifold looks good upon initial inspection, another round of cleaning and testing tomorrow on that to verify


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