turbo intake elbow

[Sachelle Babbar <sbabbar@iris.nyit.edu>]

On my previous mod posts, I neglected to metion again how I'm not using a
factory, ~80 degree elbow on the intake nozzle of the turbo.

My problem was that the lip of the turbo mounting side was thin and would
tear from engine movement and heat. You can cut it down once (and reroute
the hoses of that surface elsewhere), but after that, it's time for a new
hose.

Problem in fabrication is that the hose is molded at an acute angle, and
the metal knee side is of a larger diameter. If a larger diameter hose is
used, reducers have to be installed on the intake nozzle. Cutting the
story short, the angles and space limitations don't make this realistic.

My (**CHEAP**) solution: Home depot plumbing hose. I think it's a 90
degree rubber elbow, the diameter of both ends being the intake nozzle
diameter (in inches). You will have to **carefully** shave a tad of
material from the inside of the metal knee side. Not too much because it's
very thin there and you will make a hole. Use heat (hot water, etc.) to
stretch the hose and expand it over the metal knee. Use judgement on how
far to put the hose in as there aren't any molded stops. The nozzle end is
simple to place on. Use the wide hose clamps supplied. The emissions
devices plumbed here have to be rerouted to one of the ports on the
airboot. No trouble. ~$2-4. Hose clamps included.

Under boost (maybe only under extra boost), the hose will slightly
collapse due to high vacuum, engine mov't, and the fact that the hose was
bent 10-15 degress more acute than the 90 dgrees molded in. Solution is to
find the midpoint of the bend and hose clamp it. Not much, but slightly
snug so there's no mov't. This prevents the hose bulging out the side as
it folds. No bulge=no flow reduction.

I experienced a boosted low end using this, possibly because of the taper
boosting air intake velocity in to the turbo nozzle at low rpms. Reduced
turbo lag. Same top end.

Have used this successfully for about six months. I do have to replace it
today because I screwed up with the shaving before i realized how thin it
was there and made holes that are beginning to leak after sealing. It's
cheap enough to replace.

****************************************************************************
*Steve                                             Sachelle Babbar
*'87  5000CS Turbo 5spd 1.3-2.0 bar             <SBABBAR@IRIS.NYIT.EDU>
*Cockpit adjustable wastegate, AudiSport badge
*
*Disclaimer:"Any information contained herein is based purely on my own
*personal experience and may not necessarily reflect yours. Use caution as
*your results may vary from mine."
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