[DML] Re: Turbocharger availability

["David Teitelbaum" <jtrealty@xxxxxxxxxxxxx>]

I would question that pressure. Are you really running 7 1/2 #? It
needs to be checked with an accurate gauge. You really have to check
each turbo individually and then, after adjusting each, hook the
control lines together. You are right, most of the time the engine is
not under boost. The amount of time under boost is largely a function
of the driver's style. If you drive very conservatively you may be
able to have it at 7 1/2 # but most people, especially if they drive
aggresively, would blow the pistons with that boost. Remember, the
Island system is NOT intercooled and some installations do not have
enough fuel enrichment. This means you are flirting with disaster if
you go into detonation. The altitude and type of fuel you use also
make a difference. If you are at a high elevation you could add more
boost without ill effects. Eleanor is not a mechanic and cannot give
you engineering advice and one of the people who helped develop the
turbo package, John Conway, showed us a piston that blew from
overboost when we had him as our guest speaker at a DMA dinner. He
said anything over 6 # is dangerous. I would check the boost and
adjust it down to 6# on both turbos. You should also be using
synthetic motor oil and make sure your cooling system is bulletproof,
meaning it holds 15 psi for 15 minutes and has fresh anti-freeze. The
turbos start making boost around 2,500 RPM's so if you keep the rev's
down you stay out of boost.
David Teitelbaum
vin 10757



--- In dmcnews@xxxxxxxxxxxxxxx, "Chris " <chrisau79@xxxx> wrote:
>
> Hmmm......interesting. I've been running my "Island" setup at 7 1/2 
> pounds since I got it 12 years ago. That's what Eleanor and her 
> mechanic recommended as a maximum setting. You have to remember that 
> the car runs normally aspirated 99% of the time. The only time the 
> turbos kick in is when I'm passing or climbing a steep grade. I 
> would bet that of the 55k on my car the turbos have been on for less 
> than 1k and at 7 1/2 lbs less than 50 miles, and that estimate is 
> probably way to high.
> 
> Chris
> 6301

[long quote trimmed by moderator]




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