Dave wrote
> How many have actually turbo charged an engine that was not an off
> the shelf kit or something some one else did for them??
Hi Dave,
A bit late, but:
I'm turbocharging my 1980 GS-450 (500 now) using a Garrett GT-15.
The critical thing is to match up the engine as close as possible to the
turbo unit.
Too small a turbo and the turbo will be spinning at maximum before your
motor reaches peak torque -- too large, and you won't realize the output of
the turbo before your motor goes too far into red. There are lots of graphs
for each turbo type.
I would suggest you get Corky Bell's Turbocharging book (forgot the title).
Lots of over-the-head conculations, but plenty of real-world ground level
explanations for the turbo-newbie.
There are some other books if you want.
After you size the unit, you need to decide if you want an intercooler or
not (based on the amount of boost you plan which is based on the amount of
HP you desire or can achieve), and whether or not you will use your carbs or
EFI. If carbs, you need to pick blow-through or draw-through (a no-brainer
decision).
Some advice ... this path is not a walk in the proverbial park. It requires
very careful planning, calculations, and engineering.
The risks are much greater than even Nitrous.
For example, at full boost (app.. 30-35 PSI), my motor will be experiencing
about 28:1 compression. That number will generate GOBS of heat, and require
extra stuff to keep the head on -- not to mention I'll most probably break
my crank or rod because my bottom end is virgin (couldn't resist). I'm
putting a carbon-fiber protective plate between me and my motor for good
measure.
Anyway, you might get on the turbo list and do lots of research before
taking your first step.
Dana
#789b 1980 GS-450 (turbo/EFI to be)
#890b 1990 GS-500 (a ride)
www.bndracing.com
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