i have a fuel injected 670 turbo sled built by Hymark performance, does anyone know how to contact the man who built it? his name,i believe,is Steve Benson. i would appreciate the help.
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PM 1200psi on here, this is brad story i do believe...
Steve Benson IS the Hymark guy, also the ATS Diesel turbo guy, also a one of the 3 in HP3 Propane Turbos (Brad Story and Verlin Simmons being the other 2 in HP3)
He did the Hymark clutches and the EFI turbos. He (Steve) is the guy that did the EFI 670 Rotax - no question.
The other 2 in HP3 might be able to get you in touch with him. Good luck.
Clint Cannon owns ATS.
my 670 makes 200 hp at 15 pounds and 225 at 21 pounds. i usually run on 10 pounds at around 180 hp on avgas just to save on fuel costs. on 8lbs it runs side by side with the rt and usually outdoes the M1000.
I can't swallow 21 pounds. I had one of benson's 670 turbos and all I got was 11.
180-7lbs.
210-11lbs.
He told me he had ran his at 14. I told him I couldn't get that much. He said I needed to modify the y pipe and use heavier springs. I had trouble keeping my pipe together at 11 so there is no way you are getting 21. He told me they played with a 583 to see what it would take. When they hit 18 lbs it blew the head off.
I talked to him at the Expo last year. I believe he told me he sold ATS and kept Highmark. He is partnered up with Simmons and Story.
I was thinking of trying a new 2 stroke turbo. I hope they are more reliable. Mine ran good but there was something always going wrong. Most of the time it was the pipe. It would also load up bad in the trees and would take a minute to clean it out. It would also burn 20 gallons a day and I would still have to leave early. That sled was on a rope more than any sled I ever had.
21 psi on a 2 stroke, didn't know you could do that
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Linderman was running a 900 cat turbo at fairview last year running 21 or 22 lbs of boost along with 2 stages of N02!!!!