Paul Yaw wrote:

Paul wrote:

David Munday wrote:

Well I just bought a 13B Turbo motor which came wrapped in an '87 RX7
test mule.  I plan to put temp gages all over as well as pressure
gages and anything else I can think of.   Where would you think gaging
is most important?

One of my goals is to investigate your position that the stock turbo
is unsuitable for high sustained power settings.  How would I most
quickly prove you right (or wrong as the case may turn out?)  It'll
likely be a few weeks before I get the thing on the road.  I want to
go through the whole car while I still have Dr. Frankenstein's Swedish
Meatball as a daily driver.  I may not get all the instrumentation in
at first either, though I want to start thinking about how to fully
instrument it.

--
David Munday  -  mundayde@muohio.noise.edu

Just a quick note.  If you use the stock turbo you will over spin it.
In addition to this, the stock turbo manifolds are prone to cracking.
If it happens in a car, it will surely happen in the air.  A good
Garrett T04 with inconel turbine blades only costs about $700  You can
then replace the stock cast iron manifold with something fabricated from
stainless (or inconel if you can find something that will cut it.) that
will weigh less and withstand the heat.  If the turbo is appropriately
chosen you will have much less exhaust backpressure which will result in
better fuel consumption.  As for the compression ratio, I think you
would be OK with the higher compression ratio if you run real gas.  This
provides a few other minor benefits. Slightly lower BSFC and exhaust
temps.

Paul Yaw

 
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