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200q Boost problem solved.
My boost problem appears "fixed." I was experiencing a low boost condition
in my 89 200q. When winded out a mettalic whine would present itself at the
upper rpm range, especially upon clutch application.
It turned out to be a ruptured upper "michelin man" IC hose. I'm ordering a
Sampco replacement from TAP. Ivor and Anita are at the glen right now, so i
won't be able to order until Wednesday. In the meanwhile, I've fixed up my
ruptured hose a bit and full boost has been restored.
Since the rupture was fairly small, I have been able to continue driving the
car. Today, I pulled the hose and cleaned it off. Then, I applied a healthy
dose of silicon-gasket sealant to the outside.. filling the grooves in the
hose, then wrapped the hose in several layers of duct-tape. Upon
reinstallation, boost was restored. My Q, having reverted to kitten state for
about a week, is now back at full lion-glory. ;)
My only concern is that the small amount of sealant exposed on the inside
(through the crack) may disolve or come lose and gum up the works. I hope the
chance of this is very small though.
As a note, the inside of the IC hose didn't have any metal shards or shaving
in it, only a light coat of greasy/oily stuff. I'd like to thank the ever
resourceful Bob Myers and Dave head for pointing me in the right direction.
89 200q (160K miles)
P.S. I'm fairly certain the hose gave up the ship on my trip home last week.
For a quick thrill, I thought I'd try to tail a newer 911t up a straight-stretch
of I-88. Boost was fine until I hit the triple digit mark and that is when I
felt something amiss.