Silber Turbo Review

[jockdoc]

Makes sense Fred. Good advice!

 

[Chrisco]

How much boost is the sled making?

 

[jockdoc]

Chrisco, its making 7lbs of boost.

 

[mt.sledder]

I've got 1300 miles on my Silber boosted 17 - 163 3" axys. I've been running 15 liters of av to a tank of 91 octane at Revy. 79 grams of weight, EPI maroon primary spring, 40* straight cam with a black/silver secondary spring. 7 psi waste gate spring works good up high at Revy 8400 rpm. At the lower Revy elevations I had to back down to 5 psi boost, I was starting to cut out at WOT, once I backed off the boost it ran solid again. Sled has been running absolutely awesome. No spark plug issues. Keep the rpm around 8400. Call me for your Silber kits. Rick...

 

[Chrisco]

And how much fuel are you mixing?

 

[jockdoc]

I've switched to running straight 100LL Av now. i don't want this baby to BLOW!!!

 

[Chrisco]

I've switched to running straight 100LL Av now. i don't want this baby to BLOW!!!

Thats so weird....needing to run that much race fuel at that low of boost..

 

[ktmsx350f]

Non intercooled is a much hoter charge i can see needing some Av but not stright. 76 grams seems like a lot of weight at 7 psi though where is your boost gauge tapped into ?

 

[fredw]

You really need to see the charge temps on a non intercooler to a intercooler after a long pass.. It's not as different as some leads us to beleve.. Been there done that

Non intercooled is a much hoter charge i can see needing some Av but not stright. 76 grams seems like a lot of weight at 7 psi though where is your boost gauge tapped into ?

 

[ktmsx350f]

76 grams at 7#'s still seems pretty good considering the boonfocker sidekick x kut runs straight Av at 10#'s and only pulls 70-72 grams. I find it hard to believe a stock at elevation is 62grams and low elevation is 66 grams. To pull an extra 30 grams of weight over stock hp at only 7psi seems like alot.

 

[Chrisco]

Im running 10 pounds with 76 grams in the primary with 10 liters of VP X100 to 15 liters 92 pump gas. Runs like a top. Assuming we are all talking about Polaris weights. I will also add that my primary spring has a 310 finish.

 

[ktmsx350f]

Yes that makes more sence Chris. I have rode with a BD sidekick x on 10 straight AV and a silber on 7+. My kit on 7-8 on pump gas had more track speed and was comparianle to the BD kit on 10 # both pulled harder then the silber kit and more track speed. I find it hard to believe a silber kit could pull 76 grams on 7psi