Supercharged Pro
- Thread starter turboless terry
- Start date
So does anyone know how many grams a turbo pro pulls at say 8500 feet or higher?
8 pounds 74 grams or so
7 to 10,000 ft with 3" 163 I pull 76gr at 8# at 9 to 9.5# I pull 77.4gr... I am geared down to 2.37
S
Shred4Ever
Well-known member
Hmmm... This sounds very interesting be cool if pics were posted and some vids of it running!
https://www.facebook.com/photo.php?v=1442063012703491&set=vb.1442022762707516&type=2&theater
Looks like if the supers don't get the turbos out of the hole it's game over, especially on a long pull like that vid.
Would be fun to ride one but I fear they'er really gonna fall off on the big end compared to a good turbo.
The real question is how are those two turbo Pros running with/ahead of that turbo'd Yammi??
Looks like if the supers don't get the turbos out of the hole it's game over, especially on a long pull like that vid.
Would be fun to ride one but I fear they'er really gonna fall off on the big end compared to a good turbo.
The real question is how are those two turbo Pros running with/ahead of that turbo'd Yammi??
C
carlc
Well-known member
I was with terry in togwotee when the speedwerx sleds were demoed. Will the SC sleds keep up with a high boost turbo? Not likely, but as we saw in the Jackson dash for cash it is possible. I was at the starting line at the targhee hill climb and can honestly say I have never seen a turbo other than an apex or m1200 w turbo that was as fast as Curtis sled. It must have been some insane boost numbers.
What I can say is that if you are a tree rider more than a top end chute climber, the speedwerx deserves a serious look. The bottom end is insane, I compare it to a 1150 cutler motor. We actually became a dealer for them we were so impressed, and should be able to have a cat kit on the snow in a couple weeks. Not sure on when the pro kit will be released.
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What I can say is that if you are a tree rider more than a top end chute climber, the speedwerx deserves a serious look. The bottom end is insane, I compare it to a 1150 cutler motor. We actually became a dealer for them we were so impressed, and should be able to have a cat kit on the snow in a couple weeks. Not sure on when the pro kit will be released.
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I think they are already making a pound or two of boost at idle so there is more power than stock even at belt engagement. The reviews by the guys in the cat section claim the powerband is smooth like stock, just way more power everywhere.
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carlc
Well-known member
That's exactly what is happening. They are making about 1 lb at engagement. A superchargers boost is directly related through the pulley ratio to the engine rpm, due to it being driven by the crankshaft. The advantage is that the low end has zero lag, and it is a linear boost equation all the way to full rpm. The other advantage I a supercharger is that there is no hot side like a turbo, which means intake air temp will be lower and much more consistent. Think about the temp of a turbos housings after just starting it to a long 15 min tree ride. The sc will get warm, but will get warm, but has no exhaust running through it to super heat it
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But supercharger compressors are almost always less efficient than modern turbocharger compressor wheels. So that doesn't necessarily mean that your intake temps are going to be lower.
Curious... If they're on boost at idle... why would you need to have a scavenging exhaust pipe design?
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Wouldnt it be hard to start it without it?
I'm doing a build on one now. Take a look in the Proclimb section.
Yeah I've been following it but was wondering about the Polaris kit
Sorry about that. Don't always pay attention to the section I'm in while using tapa talk.
Eric,
Without a scavenging pipe, you'll have to have way higher boost pressure to see the same effective cylinder pressure. You'll also be blowing a ton of unburned fuel out the tail pipe.
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