From:
chevylite_REMOVE_460330_THIS_@yahoo.com
Al, there is one other option depending on your
abilities. At first it might seem like more work, but
actually it's a trade off for working with that 90 degree
connection on the core. 1/2 inch wrought copper fittings
measure 5/8 on the inside diameter. A 1/2 inch 90 degree
copper elbow and a one inch long 1/2 inch piece of
copper pipe will make the 90 degree turn that you need
on a cosworth for the core supply line. Of course if
originality is an issue, this is not an option. This fix will
also not be readily noticeable.
First, braze
(at the low temp it's actually called soldering) the
1 inch long pipe nipple into the 90 degree copper
fitting. It's also a good idea to melt a ring of solder
around the pipe nipple about 1/4 of an inch from the end
to act as the barb does, to help retain the
hose.
Then, cut the barb off the end of the heater
core. Shove some tightly wound paper towel into the
core nipple first to keep the filings out. Using some
sort of heat shield to protect the enviroment, braze
the copper ell assembly onto the core nipple making
sure that you have it rolled correctly. If you use
some really cheap solder, you will not have to get the
surfaces as hot. Any solder should hold up to the pressure
and heat.
It might seem like a lot of work,
but for someone who has brazed hot water heater
fittings it pretty much the same. If you ever have to
remove the core, simply heat the joint up and remove the
ell assembly. I'd prefer this to having to deal with
fighting the installation with the 90 connection. I hate
to have force things when assembling, like you have
to do with the cosworth core.
Just providing
an option..Mike
[This is message #781 by user chevylite on Yahoo! Club Cosworth Vegas:
http://clubs.yahoo.com/clubs/cosworthvegas ]