06-29-2013, 10:12 PM | #1 |
Drives: Cyber Grey 2010 2SS RS Join Date: May 2012
Location: Hendersonville Tennessee
Posts: 300
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variable vane turbo..
I know these are getting used like crazy in the diesel world but why have they not jumped over into our world. I've been watching videos of of guys being able to pkay with them and build boost at idle. I just think something like thiat would be awesome for a street car and finally give the supercharger guys something to worry about off the line.. so with that, thoughts?
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2010 2SS/RS
-Headers, catback, Holley Mid-rise and a 150 shot- |
06-29-2013, 11:27 PM | #2 |
Drives: 11 Seconds or Faster Join Date: May 2012
Location: Arvada, Colorado
Posts: 2,797
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VGT (variable geometry turbo) is popular in diesel in OEM forms, we all jump to traditional turbos in the aftermarket. Diesels need lots of torque down low for hauling, we don't need that power curve, so we don't use vgt.
Not to mention, VGT turbos on diesels are usually sub 60mm, and have very little power potential. Our cars need 70mm or greater compressor wheels. If there was one thing from my diesel I'd like on my camaro, it'd be the compounds. Nothing like a 85psi of boost spoolin up |
07-01-2013, 11:25 AM | #3 |
Drives: 2010 SS/RS LS3 M6 Join Date: Apr 2011
Location: Kansas
Posts: 693
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They use to be popular back in the 80's and 90's, but didn't hold up well to the exhaust heat and they were expensive back then so OEM went to twin turbo's, one small and one medium size to get the same results and racers just went to larger turbo's.
Last edited by swiftkart; 07-02-2013 at 11:31 AM. |
07-01-2013, 02:35 PM | #4 | |
Drives: 416 w/TH400 Join Date: Mar 2012
Location: Houston
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Quote:
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ERL 416 - 12.5 cr, TH400, Custom VVT Cam, PRC 255 heads, NW 102 TB, Aeromotive stealth fuel system, Fast 102 plumbed with a nitrous express direct port kit, BMR 15" conversion kit
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07-02-2013, 02:42 AM | #5 | |
Drives: it changes Join Date: Nov 2010
Location: Norn Iron
Posts: 1,126
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Quote:
Diesel's by nature just run far far cooler. In time though I'm sure they will become more mainstream. |
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07-02-2013, 11:53 AM | #6 |
Drives: cts-v Join Date: Dec 2011
Location: Mooresville, NC
Posts: 506
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This is not really true. Back in the 90s and early 2000s maybe, but there are many manufacturers in the medium and heavy truck industry using electronically controlled VGTs. Now I'm not saying they would necessarily work in our situations, but there are plenty of Large VGTs out there. Heat and packaging would be two major issues to contend with. Not to mention the fact that a VGT would add significant cost to any turbo kit.
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07-07-2013, 09:11 PM | #7 |
Drives: 2012 camaro ss, 2010 silverado Join Date: Sep 2012
Location: las cruces nm
Posts: 26
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As a pro diesel tech at a large dealer i know a lot about the vgts. I'm actually planning to use two hole set vgts for a remote twin set up on my 2012 but the big hurdle is vgt control. I'm gonna go with a waste gate actuator using drive pressure to operate the actuator. Not the best option but sticking with the keep it simple idea.The ones I'm using are he451ve. The compressor is only a 64mm but it will flow 80lbs per hour. Two of the should be good for north of my 800 rwhp goal. The exhaust ar can go from .23 to 1.90. So it should really help spooling in a rear mount. Anyway biggest draw backs are size and weight. The exhaust side of the turbos I'm using are 11 inches round and each turbo weights 33 pounds which doesn't hurt as much in a rear mount but is really not a good thing. As for we don't need the low rpm boost I don't understand why all those Maggie guys brag about low rpm power if it isn't a great thing. So low rpm boost, high rpm efficiency are great. Weight and size are bad. But everything comes with good and bad. Ok next cost a turbo like im using new is 2800 but used on ebay 450 and the 250 for a rebuild kit. Yes high cost but not crazy high if uou go the used route.Any specific questions. Ask and I will answer as best as possible.
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