Jerry Hey wrote:
     > >>
     > >> Paul,  what are the maximum temperatures the  intake (in the housing)
     > >> will see?   I am selecting the epoxy to bond in the P port throttle
     > >> bodies.    I did contact Racing Beat to see what they used.  It is
     > >> Devcon but which specific product I could not find out.   I bought
     > >> what
     > >> the sales person "thought" they used but it is a repair material about
     > >> as thick as peanut butter.  I want something that can be poured and is
     > >> self leveling.  If WEST can tolerate the temps,  I may go with that.
     > >> I
     > >> am open to advice from anyone.       Jerry
     > >
     > > Epoxy works great. The temp is limited to about 200 F heat soak.
     > > When running it is cooler. There are some high temp epoxies that work
     > > at
     > > 300 F.
     > >
     > > Paul Lamar

     > My search has led  to " Duralco 4525" an epoxy with metal filler that
     > is stable to 500 degrees.  Said to be ideal for high performance
     > bonding, potting. repairs, castings and jigs.  Will not crack with
     > differential expansion of the aluminum housing due to high aluminum
     > content.   Machinable.   I will call them this afternoon.    Jerry
     > >

     Sounds like Tracy's favorite substance...  JB Weld :)

     Paul Lamar

Jerry,
The material does indeed sound like JB Weld. Which is an epoxy with an aluminum, and other fillers.
 I like the periferial port idea Jerry. I have one other suggestion as well. If you cut the housing with a slight taper, (small at the outside), around .005
and match with the stub on the throttle port you can use differential heating to lock the port in very well. Still use the epoxy, it will then be functioning
as a sealer more than a mechanical bond. Liquid nitrogen is usually available from industrial sources. Lacking that, get dry ice from a local source, and pack
the stubs in it for 1/2 hour and oven heat the housings to about 200. put your epoxy on the cold part then insert. be sure to line up the throttle shaft bores
and stick the parts togeather. You will get a super bond and seal.
Good luck Jerry,
Bill Jepson

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