Thanks piledriver.
I will post some pics once the welding is done.
WBX heads on an aircooled autocraft cased engine?
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Re: WBX heads on an aircooled autocraft cased engine?
OK I took the heads to the welder and he said that it might be worthwhile to tap, thread and plug the round openings in the head (circled in red in the picture) and then use for example engine block filler (such as Moroso 35571) to fill the holes which are not round ( orange in the picture) instead of welding.
The reason he said that if the holes next to the combustion chamber are welded it will most likely go through to the combustion chamber and then machining would be required. I told him that the head would be machined anyways...Also he said that to minimize distortion due to heat, a stainless circle the size of the cylinder opening should be installed. Sounds quite a bit of extra work to me...
Are these valid points and would the suggested alternative work, or is it a case that he's not too interested in welding the head to begin with
(Picture is not mine - I just found it in the interwebs and added the circles...)
The reason he said that if the holes next to the combustion chamber are welded it will most likely go through to the combustion chamber and then machining would be required. I told him that the head would be machined anyways...Also he said that to minimize distortion due to heat, a stainless circle the size of the cylinder opening should be installed. Sounds quite a bit of extra work to me...
Are these valid points and would the suggested alternative work, or is it a case that he's not too interested in welding the head to begin with
(Picture is not mine - I just found it in the interwebs and added the circles...)
- Piledriver
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Re: WBX heads on an aircooled autocraft cased engine?
Take a broken trailer to a welder.
Do not trust heads to an average, or even really great welder who doesn't do heads all the time.
Most welders will give it their best shot, by nature.
That is not necessarily a favor to you, they just wanna see if they can weld it.
If it doesn't go well, you get to pay them and keep the scrap heads.
Take the heads to a head guy.
Even if it costs triple.
They weld heads....Sometimes all day long.
If they don't weld head, find another head guy.
Do not trust heads to an average, or even really great welder who doesn't do heads all the time.
Most welders will give it their best shot, by nature.
That is not necessarily a favor to you, they just wanna see if they can weld it.
If it doesn't go well, you get to pay them and keep the scrap heads.
Take the heads to a head guy.
Even if it costs triple.
They weld heads....Sometimes all day long.
If they don't weld head, find another head guy.
Addendum to Newtons first law:
zero vehicles on jackstands, square gets a fresh 090 and 1911, cabby gets a blower.
EZ3.6 Vanagon after that.(mounted, needs everything finished) then Creamsicle.
zero vehicles on jackstands, square gets a fresh 090 and 1911, cabby gets a blower.
EZ3.6 Vanagon after that.(mounted, needs everything finished) then Creamsicle.
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Re: WBX heads on an aircooled autocraft cased engine?
OK so basically welding is the way to go and not tapping and threading the holes similar to oil galleys in T1 case?
Would it be so that the head heats so much that the plugs wouldn't stay (water)tight?
Would it be so that the head heats so much that the plugs wouldn't stay (water)tight?
Piledriver wrote:Take a broken trailer to a welder.
Do not trust heads to an average, or even really great welder who doesn't do heads all the time.
Most welders will give it their best shot, by nature.
That is not necessarily a favor to you, they just wanna see if they can weld it.
If it doesn't go well, you get to pay them and keep the scrap heads.
Take the heads to a head guy.
Even if it costs triple.
They weld heads....Sometimes all day long.
If they don't weld head, find another head guy.
- Piledriver
- Moderator
- Posts: 22520
- Joined: Sat Feb 16, 2002 12:01 am
Re: WBX heads on an aircooled autocraft cased engine?
The little round holes, yeah, you could plug those either way in a few seconds, welding would likely be faster with the right prep.
The big triangle shaped holes right by the bore registers will be much harder to tap and plug..
The trick with welding aluminum is buy beer, preheat, and to let someone who is really good at it do it.
If you put too much heat in the heads you will need to have them re-heat treated before final machining /prior to installing guides and seats..
It might be a good idea anyway. ASK YOUR HEAD GUY.
The big triangle shaped holes right by the bore registers will be much harder to tap and plug..
The trick with welding aluminum is buy beer, preheat, and to let someone who is really good at it do it.
If you put too much heat in the heads you will need to have them re-heat treated before final machining /prior to installing guides and seats..
It might be a good idea anyway. ASK YOUR HEAD GUY.
Addendum to Newtons first law:
zero vehicles on jackstands, square gets a fresh 090 and 1911, cabby gets a blower.
EZ3.6 Vanagon after that.(mounted, needs everything finished) then Creamsicle.
zero vehicles on jackstands, square gets a fresh 090 and 1911, cabby gets a blower.
EZ3.6 Vanagon after that.(mounted, needs everything finished) then Creamsicle.
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- Joined: Mon Jul 06, 2009 8:04 pm
Re: WBX heads on an aircooled autocraft cased engine?
fastback wrote: ↑Wed Feb 20, 2013 12:15 pm lokked briefly at your tread at TS and here's what i did with my WBX heads
welded and plugged the holes facing down and run water in /out the 2 other big holes at the top.
run an small electricpump and a small radiator to cool the heads.
it was on a 2,1 L "oxy" using stock WBX valves , rods ,pistons crank etc and type4 sylinders.
the heads seem to flow well as the engine run very good with a VZ 25 cam 10:1 compression E85 and megasquirt+ eDIS spark
bilde (3).JPG
DSC00701.JPG'
IMG_0536_01 (Small).jpg
DSC01352.JPG
Is this engine currently running? How well does the water flow through the heads? Any hot spots? Im looking to do this exact thing