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Safe boost on pump gas Silber turbo kit?

Sunvang

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Just bought a fairly used Silber turbo kit for my pro rmk, And i live in Norway, where we ride at an elevation of 500-1000meters over sea level. And here its very hard to get 100LL, and race gas price is sky high, so i will be riding 91+ pump gas. So what do you other turbo guys its safe to drive with, and what hp do you think it will make? The kit will be ran with a Power Addiction 11.1 head.

Thanks.
 
Last edited:
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skotertoken

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Feb 17, 2008
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I run 7-8psi with no DET, and I think it is able to some 9-10psi. Please let me know how the kit will work out for U, after making a custom map mine is running strong and putting out a LOT of HP! I ran 5-6psi, 21/42 gearing, 76,5gr weights in a 155 Assault and still struggling with over rev. I run the silber clutch kit.
 

Sunvang

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Sounds great! Havent got the kit yet, and we are out of snow for this year, so the tuning and testing will have to wait to next season. I will be running the same gearing as you, and its the silber clutch kit, but with Team adjustable weights, and some other springs.

Sounds like your running a good boost, and this is on 100% pump gas? (98 eu standard oktan)

How high rpm's are you hitting when over reving? What weights have you tried so far?


Thanks
 
S

skotertoken

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Yes its on 100% 98oct eu standard. No additives. I haven´t gone past 76,5gr yet, i did forget my weight box the last time I went for a ride. I´m having trouble getting the rpm below 8300 at 5,5psi. Sounds low but I tell you it rips!
 

Sunvang

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5.5? Yeah that sounds real low, cause I was hoping to get atleast 7-8psi, with 98oct, and since im running another head with 11.1 compression, I hope I will reach 7-8psi and safe. Im kinda new to all this turbo 2 stroke world, and turbo world in general. But Ive been told this kit is really easy to tune, so ill try to get a hang of it when the season starts. :)
 
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skotertoken

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I´m running the EXACT same things as U. And i have bin at 8psi with no det, and I will try to reach 10-11psi if there is time this season. The only thing separating us is that I run a custom map.
 

Sunvang

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Well that's good, then we compare results as i get my sled together. But wy do you keep it on 5,5psi when you easily can run 7-8psi with no dET? And did you made your own map or what?
 

Sunvang

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Oh yeah I understand! Well it will be fun to see how the mounting goes, and then we can get to see some results!

Thanks for the advice.
 
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