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find another 1.3 modern turbo, and slap it on. Would be perfectly suited  Smaller than 1.3, it'll have less lag, but will severely limit power. Bigger than 1.3, you'll have the possibility for more power, but much more lag |
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You're like a crazy backyard genius! |
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Go VNT for less lag, base your turbo sizing on BHP your aiming for rather than capacity. Garret do some very nice variable nozzle turbo that can be had for peanuts on evilbay.
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1994 Rover Metro
1994 Peugeot 405 Estate
1991 Rover Metro Gti 16v
2001 Fiat Seicento Sporting
1999 Fiat Punto 1.2
1994 Peugeot 106 Xnd (x3)
1991 Westfield 7
2004 Landrover 110 SW
2003 Seat Ibiza 1.9Tdi Sport
1959 Ford 107e Prefect
1992 Suzuki Vitara
2008 Skoda Fabia
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Cool, yeh I would be up for using a VNT one, they're great on VW TDi's.
Sorry, I'm not up with modern cars at all - do you know any modern petrol 1.3 (up to 130bhp ish) cars that have a VNT? Or do you know what more specifically I'm looking for on Ebay?
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1994 Mini Mayfair MegaJolted with BMW M3 seats; 1990 Volvo 760 D24Tic 16psi, more fuel, running SVO/WVO; 1965 Triumph 2000 Mk1 projects.. one day;  |
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VNT on a petrol, is asking for problems - as stated before, petrols run FAR hotter than dervs. To my knowledge, there isn't a single manufacturer who fits a VNT style turbo to a petrol engine, for good reason too.
If the vanes seize up (the extra heat will see to that rather quickly) you'll either be VERY lucky, and have them seize "open", and give very little boost. If you're unlucky, they'll "close", then stick there - making maximum possible boost, with no way of bypassing any of the exhaust. The turbo will overspeed like mad, and boost will reach normal derv pressures, of around 20-25psi.
Yes, they work on petrols - but don't expect it to be a fit+forget item. You'd be well advised to replace the compressor wheel with one suited to a petrol, and fit an external wastegate as an emergency backup - just in case the vanes seize.
Then there's the control method......
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You're like a crazy backyard genius!
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Mar 10, 2012 20:34:54 GMT
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2005 onwards Porsche 911 has a VNT on a petrol engine, the first one I think!
I would say theres no problem 'in the real world' to bosh a suitably sized diesel turbo onto a petrol engine, though I defo would not use a VNT.
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1974 Lancia Beta Saloon
1975 Mazda 929 Coupé
1986 Mazda 929 Wagon
1979 Mazda 929 Hardtop
1982 Fiat Argenta 2.0 iniezione elettronica
1977 Toyota Carina TA14
1989 Subaru 1800 Wagon
1982 Hyundai Pony 1200TL 2-dr
1985 Hyundai Pony 1200 GL
1986 Maserati 425 Biturbo
1992 Rover 214 SEi 5-dr
2000 Rover 45 V6 Club
1994 Peugeot 205 'Junior' Diesel
1988 Volvo 760 Turbodiesel Saloon
1992 Talbot Express Autosleeper Rambler
2003 Renault Laguna SPEARS OR REAPERS
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1994 Rover Metro
1994 Peugeot 405 Estate
1991 Rover Metro Gti 16v
2001 Fiat Seicento Sporting
1999 Fiat Punto 1.2
1994 Peugeot 106 Xnd (x3)
1991 Westfield 7
2004 Landrover 110 SW
2003 Seat Ibiza 1.9Tdi Sport
1959 Ford 107e Prefect
1992 Suzuki Vitara
2008 Skoda Fabia
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froggy
Posted a lot
Posts: 1,099
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Mar 11, 2012 17:53:43 GMT
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correctly sized a diesel turbo is no issue on a petrol engine , ive been running holsets for a few years with no issues ,diesel vnt isnt a problem other than figuring out a way to control the vane . i don't think you can have your cake and eat it though as the normal route is to use a turbo from a diesel motor at least twice the size of the petrol unit its going on and lag is the issue although top end power is epic . the vnt holset i was developing was perfectly happy making 2.5 bar and 550+hp with reasonable response low down  |
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