my buddy is having his 235 out of his '54 210 rebuilt. the shop wants to rebuild the head for unleaded gas. and apparently the shop claims they can't find the right length Bronze guide liners. The valve guides are like 3-5/8" and the longest guide liners the shop claims they can find is 3-1/8". does anyone have ANY info that could help on this ASAP!? thanks. Chris
Thats why I called 15 different shops before I found one that knew enough about stovebolts before I picked one to do my rebuild. There were tons of places I might take a small block but I had to drive 2 hours south to find one that knew inline 6's. I would assume they could get them from Egge Machine
thanks man. yea, this guy that rebuilding this motor is good knows the stovebolts....but he's a bit more of a muscle car guy and like to ONLY call his people for parts and when they don't have it he assumes it doesn't exist... thanks again! Chris
well, so far everyone is saying they only have 3-1/8" bronze guide liners....maybe squirrel will chime in....there's nothing he can't answer is there?
I had a place do mine that did mostly commercial diesel trucks. I don't know where they got them, but you might want to try a shop that specializes in big trucks should your other sources fail.
some info for everyone else. we found this place on the net. http://www.cylinderheadsupply.com check 'em out.
i'm not sure of the exact size of the valve stem, the guide liners need to be 11/32" OD X 3-5/8" LONG. his car is a standard, not PG.
thats wierd i had my 55 head rebuild and they didnt have a problem. I had it converted to unleaded too.
what's the ballpark for getting a 235 rebuilt?...got an estimate for 3500...seems kinda steep. If anyone knows a shop that does good work for a good price in San Diego please let me know....also heard of Baxter's Machine in National City...any feedback?
235 valve stems are the same size as SBC and many other engines,.3410-.3415. New guides are available at the supply houses engine rebuilders use,about a buck and a half each. The shop doing my 235 head as we speak has liners long enough ,but used new guides because the existing guide were too worn. Any decent machine shop can handle a 235 or similar GMC inline 6.It's no big deal at all.Obviously if they make a big deal about it,move on.
i had that same problem many yeaars ago, could not get good valve or guide work so i bought the tools and do it my self. been doing it for 30 years now.
Don't the valve guides on a 235 extend quite a ways into the intake and exhaust ports? If so, wouldn't it be a good idea to cut the guides down, to improve airflow?
My 2 cents: 1. Stovebolt valve guides are cast iron not bronze and easily available. 2. Shortening and or tapering the guides will not give any noticable differrence when flow tested. Leave them as is to maintain stability. 3. Insert them to the standoff height specified in the shop manual. Edit: I even have a box of them on hand. Manufacturer is SBI and part number is 140-1732
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