Downpipes
Posted: Thu Nov 23, 2000 9:08 am
>
> The shape of the downpipe is critical... bit hard to describe, but
the best
> is a "bell mouth" design, that is made of two separate tube sections
> "siamese" welded together that provide smooth duct-like exits for
both the
> turbo exhaust and wastegate. Between each of these "siamese ducts",
there
> should be a short "tang" extending into the union of the two ducts
and also
> extending iand butting into the wall of the turbo exhaust outlet...
the
> purpose of which is to provide extend the separation of the turbo
and
> wastegate exhaust flows further into the downpipe and away from the
turbo.
If I were to have another downpipe built again, I would incorporate a
seperate pipe for the wastegate as you mentioned, but have it simply
point to the ground and not meet back up with the exhaust at all. A
bit loud( when the wastegate is open) and illegal, but no disturbance
to the primary exhaust at all, technically more area for the primary
exhaust to flow through, and cheaper.
-Matt
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> The shape of the downpipe is critical... bit hard to describe, but
the best
> is a "bell mouth" design, that is made of two separate tube sections
> "siamese" welded together that provide smooth duct-like exits for
both the
> turbo exhaust and wastegate. Between each of these "siamese ducts",
there
> should be a short "tang" extending into the union of the two ducts
and also
> extending iand butting into the wall of the turbo exhaust outlet...
the
> purpose of which is to provide extend the separation of the turbo
and
> wastegate exhaust flows further into the downpipe and away from the
turbo.
If I were to have another downpipe built again, I would incorporate a
seperate pipe for the wastegate as you mentioned, but have it simply
point to the ground and not meet back up with the exhaust at all. A
bit loud( when the wastegate is open) and illegal, but no disturbance
to the primary exhaust at all, technically more area for the primary
exhaust to flow through, and cheaper.
-Matt
-------------------------- eGroups Sponsor -------------------------~-~>
eLerts
It's Easy. It's Fun. Best of All, it's Free!
http://click.egroups.com/1/9699/1/_/_/_/974988465/
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To unsubscribe from this group, send an email to:
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