Sprint ST
Turbo Connection
Brian Olson
Turbo595@aol.com

http://www.boostisgood.com

(605)393-0816

Turbo Q&A - scroll down for some pics

Some Turbo questions posed by ST lister Martin Retherford and answers from Brian at Turbo Connection.
 
Question 1: Can you find out the process for setup. I was reading something and if I remember correctly someone setup a 595 with a turbo and an extra set of fuel injection with no other work and it runs. This goes against every concept of what a turbo is in my experience.
Answer: The only addition to the fuel injection is our supplemental boost computer, which is run in conjunction with the stock Triumph computer.
 
Question 2:Small displacement motors generally require some engine disassembly, combustion chamber reshape/compression reduction (especially 11.2 : 1 ratio), and special lump stick. These are the absolute minimums to run a turbo.
Answer: By using a intercooler and keeping the boost levels below 8 psi in our kit we are able to leave the motor stock.
 
Question 3:It may also require new rods / crank possibly specialty pistons and if you're really going for it, porting of the head.
Answer: The Triumph motors are built plenty strong enough for these boost levels.
 
Question 4: What boost is this thing running at?
Answer: 6 psi on low 8 psi on high
 
Question 5: Without a compression reduction it should be guzzling 92 octane or running on aircraft fuel 120 ctane + or maybe alcohol. On normal water cooled motors as a general rule 9-15 lbs. boost is about all you can get out >without pinging/detonation problems. Its no more than 9 lbs. boost for air cooled motors without special fuel.
Answer:92 is definitely recommended and higher octane is recommended if prolonged high boost wide open throttle blasts are done.
 
Question 6: It is possible to run a turbo with 11.2:1 ratio if you retard the timing way back. But I don't know if the ST can be manipulated like that.
Answer: The timing for the these motors has not proved to be too excessive.
If you have any questions, please email Brian for more information.
 
** Also **

SuperBike did a review (Oct99) of this bike - Click here to read it now

Motorcyclist did a review (Jan00) of this bike - Click here to read it now

Click to expand
Stock vs Turbo Dyno
Click to expand
Contact info - click to expand Turbo flyer with sample dyno - click to expand
Side view - click to expand Side view - click to expand
Boost gauge - clcik to expand Boost in action - click to expand
Left side view - click to expand right side view - click to expand
View from front air scoop - clcik to expand
Back to top