What is the front cover / water block casting material? It's not pure
aluminum is it?

I was looking at just moving the outlet pipe from the front (where
the slide throttle would hit it), to welding it where the heater
stove pipes came out on the side.

Welder just wanted to know what material is made up of the casting?

- Matt Boiteau

The alloy is probably 356.
Tig welding on pumps has never been a problem.
I assume you mean a an RX7 and not an RX8.

The lower intake to the pump on the RX8 is the main problem.
Not easy to change that.

Paul Lamar



It's for an RX8. Where the 'stove pipes' come out for the return of the heater core & TB, drilled them out and weld the outlet there. The welder will pretty it up and fill in the holes. See how it turns out anyways. The sharp 90 bend it will create, I'll just JB weld a curve inside to help the flow.
The pic below I sawed off the outlet and placed it ontop of the 'stove pipe' holes.


-Matt Boiteau
It's for an RX8. Where the 'stove pipes' come out for the return of the heater core & TB, drilled them out and weld the outlet there. The welder will pretty it up and fill in the holes. See how it turns out anyways. The sharp 90bend it will create, I'll just JB weld a curve inside to help the flow.
The pic below I sawed off the outlet and placed it ontop of the 'stove pipe' holes.


-Matt Boiteau

I did not realize you were talking about the RX8 thermostat housing.
That is a good idea.

You had me confused for a while :)

Paul Lamar


The Rotary Engine News Letter. Powered by Linux.
If you want off the list PLEASE let me know and I will
remove you. ACRE NL web site. http://www.rotaryeng.net
You Tube http://tinyurl.com/beqqxas
Copyright 1998-2015 All world wide rights reserved.