Strange hybrid turbo on ebay.

[kwlw]

Hi,

Just found this turbo on bay of fleas.

http://i3.ebayimg.com/01/i/04/7a/f3/b5_1_b.JPG

Not intended to buy or advertise it, but does such hybrid (k26/k29) is sane ? I mean cold side is huge (somebody called K27 truck turbo, and this is k29 ...), and hot side is small.

Seller says in description http://cgi.ebay.de/ws/eBayISAPI.dll?...tem=7985849008
that this turbo starts spinning at 2900rpm providing some of boost. Also figures like 2.9 bar overboost sounds like absolute pressure. Or can it be real 2.9 bar ? What fuel ppl should use on such high boost ?

I'm just wondering, what consequences can be when "marrying" such different turbo sides. Whilst understanding, that it is for driveability - I suspect excessive hot side wear and high backpressure. Am I right ?

Sau

[Chris M]

IIRC Doug had a K26/27/29 at one point I think he would have needed a 4" D/P to make it work 100% effectivly. Back pressure would be a issue if the D/P and system wasn't big enough.

Cheers,

Chris

[Audi Parts Guru]

That would be an interesting drive

[Doug_RS2]

I had a k29 compressor in a k27 housing - that one looks like a bigger compressor housing.

Mine would not spool up and although it produced power - very high in the rev range you got no torque.