Here she is, I named her, "the Wanderer "

[slabghost]

Outside parts may not fit it seems from reviewing the pictures. I found another probably better option that is left side head.
https://www.ebay.com/itm/HONDA-1980-GL11 ... gJ&vxp=mtr

 

[slabghost]

made2care » Tue Oct 27, 2015 3:22 pm[/url]":21t4ko8y]
Here's a pic of the head back from mechanic. He wrote some numbers and told me to check the tolerance in the book but he thought it would be okay. Charged me $50 to clean it and change the valve seals. He did mention I will have to get new cam seals.

.004 is the limit of warpage allowed.
gallery/image_page.php?album_id=1152&image_id=11561

And it seems that is the left head.

 

[AApple]

Take that head and get it machined flat....wouldn't take much to make it good to go, imo. :yes:

 

[dan filipi]

I think at this point I would remove that left head as carefully as can be to try and see where it blew by. Maybe since it hasn't had a lot of heat cycles it will pull off to see the gasket well enough?
What else could be done during disassembly to not damage the gasket and provide a good view of the blow by point?

On top of that .004 space from the head, block flatness could be off just enough to push it way past serviceable limit?

 

[joedrum]

okay im going to back out of head interchanging talk here as the only thing i have to look at is 1100 heads on 1200 motor and i had to modify things to get all that to use 1000 timing belt covers ...nothing stock about what i have to look at

 

[slabghost]

dan filipi » Wed Nov 25, 2015 1:37 pm[/url]":1ww4m9m3]
I think at this point I would remove that left head as carefully as can be to try and see where it blew by. Maybe since it hasn't had a lot of heat cycles it will pull off to see the gasket well enough?
What else could be done during disassembly to not damage the gasket and provide a good view of the blow by point?

On top of that .004 space from the head, block flatness could be off just enough to push it way past serviceable limit?

Yes. If block is off even .001 that's too much.

 

[dan filipi]

I would add too that this running engine sounds real good internally and since the spare engine is of unknown running condition, I'd be inclined to keeping this runner in the frame and going after just this left head problem, unless of course the block is warped.

 

[slabghost]

dan filipi » Wed Nov 25, 2015 2:33 pm[/url]":tuzi4jur]
I would add too that this running engine sounds real good internally and since the spare engine is of unknown running condition, I'd be inclined to keeping this runner in the frame and going after just this left head problem, unless of course the block is warped.

Agreed! And even if the block surface is uneven. A little work with a file can fix that too. It does sound like a solid motor.

 

[made2care]

I revved it up quite a bit ( not on video) and it sounds really strong. I'm done dilly dallying around, it has to be the head or block. Although #2 does have gas smell but I'm inclined to think its either coil or carb.
I will very carefully remove the head and see what is up.

 

[slabghost]

Coil won't cause the smoke. If it was carb it'd smell like gasoline. Hopefully it's just the low spot on the head causing a leak and not a bad head.

 

[dan filipi]

I'm not sure I'd reuse that head at this point. Though a crack in them is nearly unheard of, it can happen. Could just be that low spot causing all the problems.

Tell you what, I have several known good heads that have come off runners.
To get this sorted out, I'm willing to pick out the best one and send it to you for just the shipping cost. It would be minus the cam but otherwise complete.

 

[chilidawg]

dan filipi » Wed Nov 25, 2015 4:28 pm[/url]":3rrl5dae]
Tell you what, I have several known good heads that have come off runners.
To get this sorted out, I'm willing to pick out the best one and send it to you for just the shipping cost. It would be minus the cam but otherwise complete.

Now there's an offer you can't refuse!!! :shock:

 

[made2care]

dan filipi » Today, 5:28 pm[/url]":z0ido9r2]
I'm not sure I'd reuse that head at this point. Though a crack in them is nearly unheard of, it can happen. Could just be that low spot causing all the problems.

Tell you what, I have several known good heads that have come off runners.
To get this sorted out, I'm willing to pick out the best one and send it to you for just the shipping cost. It would be minus the cam but otherwise complete.

Wow, thank you very much. I will pm you and get the $$$ to you. That's wonderful, thanks . I really appreciate it.
I also need to donate to this site. Thanks again.

 

[made2care]

slabghost » Today, 4:22 pm[/url]":lel6qifa]
Coil won't cause the smoke. If it was carb it'd smell like gasoline. Hopefully it's just the low spot on the head causing a leak and not a bad head.

Okay, thanks.

 

[dan filipi]

I think before this you should pull the head and check the block with a machinists ruler. No point in going any further if the block has a problem.

 

[slabghost]

We already know that head has a low spot. Get a magic marker and a nice big mill file. You can true up both head and block with a bit of careful effort.

 

[Omega Man]

What causes a low spot on a head?

~O~

 

[dan filipi]

My experiences it has always been from overheating which warps the heads then it doesn't return to its original shape. I've read improper sequence torquing can cause it too.

 

[slabghost]

dan filipi » Wed Nov 25, 2015 8:20 pm[/url]":3cjqmf4m]
My experiences it has always been from overheating which warps the heads then it doesn't return to its original shape. I've read improper sequence torquing can cause it too.

While these are both valid causes. Keep in mind these are mass produced cast items. Mix of metals is not always homogeneous and batch to batch is rarely exactly the same. Some parts of the alloy may expand or contract differently forming these low spots. If this were not the issue there wouldn't even be a need to check or a tolerance known.

 

[dan filipi]

There is also an inherent weak spot in the head/head to block design.
I have seen many blown head gasket pictures and most all of them are in the center area.
Honda should have built in better support there.