[Spridgets] Guidance Needed on Rebuild of Head

[dlancer7676 at comcast.net]

Doug:

You will probably get all sorts of replies on this, but rebuilding your own head is pretty straightforward and interesting.  I think the machine shop would be best to do a couple of basic operations, such as milling the head to insure it's trueness and installing the valve guides  and seats if you need them.   They could advise you on this as well.  I have used a couple of local machine shops--one of them is strictly a racing shop that usually deals with the big throated heavy-duty high HP engines--I guess my little engines compare with the .049 engines that we used to put on model airplanes to these guys. LOL

I have rebuilt a couple of heads--you have to use your good judgement as to whether to install new valves, which require grinding to "dress" them, or whether your old valves are grindable.   You might want to install new head and manifold studs while the head is off, since each torquing of fasteners stretches the metal, and hard telling how many times over the past 30+ years the studs have been torqued.  

I built a little workshop "stand" when I rebuilt my first head that has come in real handy.  It was made from scrap 2x4 lumber and has a platform to rest the head on and numbered holes to put the valves in as they are removed. I pass the valve stem through it's spring and put it into the hole, insuring that everything is going back the same as it came out.  

Just a few thoughts from the country.


--David C.
WOULD A FLY WITHOUT WINGS BE CALLED A WALK?


 -------------- Original message ----------------------
From: Doug Altman <doug_altman at yahoo.com>
> This winter I will probably have to rebuild the head assembly on my stock Bugeye 
> A Series 948 cc serial 9CUH20079 engine.&nbsp; Do it myself?&nbsp; Have a 
> reputable shop rebuild it?&nbsp; Purchase a rebuilt head assembly and send them 
> my core?&nbsp; Who for parts?&nbsp; Who for machining?&nbsp; Who for a complete 
> assembly?&nbsp; Need guidance from the team.&nbsp; Thanks.&nbsp; Doug 
> Altman&nbsp;in central Michigan&nbsp;&nbsp; ....o~'o&nbsp;
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