[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
2-piece EM: even more questions...
Me again going on about 2-piece EM for the
I am definitely forced to get one of these
things for the 200 and that means agent's
only prices. What has to be done has to be
done, I guess.
I'm still curious as to why this whole thing
fails the way it does. Hence the following
1) what metal or alloy would one
use for the 2-piece EM to give
it better heat resistant properties
and make it stand up to heat for
longer, make it resist excessive
warping and make it tough enough
to resist cracking?
Maybe the same material the head uses? I think,
from what I've heard about the Dialynx headers,
is that casting the unit in the same material
but making it thicker, did not help the longevity
of the unit. It resists cracking, but apparently
it warps like crazy and is a b*tch to work with
(right Phil?). So maybe use something that does
sit with the heat very long or that takes a lot
of heat energy to heat up.
2) what in the design of the 2-piece
do more knowledgeable listers think
the engineers should have changed
to make it a stronger unit?
3) this one is for the turbo gurus on
the list: what would you change on
the design of the 2-piece EM to make
it work better in this turbo
application? I've seen some cars running
tube headers for turbos (none Audi
so far), so how does a cast unit
compare to a mandrel bent tube
header for the same turbo app?
If I get the 2-piece I am coating it, but there
is indication to leave it as is to do its job of
heat sinking. However, to me it seems the thing
hangs onto the heat too long and that is a major
factor in the cracking and warping of the unit.
Maybe the unit should have been cast in a material
more suitable to getting rid of any absorbed
Sorry for the WOB. It's sunday and I've feeling