I saw a smart car turbo on ebay(real cute small thing) the other day and it got me thinking. Anyone done a twin turbo conversion for the 617?

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http://superturbodiesel.com/images/sig.04.10.jpg
1995 E420 Schwarz
1995 E300 Weiss
#1987 300D Sturmmachine
#1991 300D Nearly Perfect
#1994 E320 Cabriolet
#1995 E320 Touring
#1985 300D Sedan
OBK #42

There is just enough room to do it, but the question is why do it other than for bragging rites? Parallel or sequential turbos have all been surpassed and replaced by VGT technology. Compound turbos don't make sense unless you plan on running 25+ psi of boost.

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green 85 300SD 200K miles "Das Schlepper Frog" With a OM603 TBO360 turbo ( To be intercooled someday )( Kalifornistani emissons )
white 79 300SD 200K'ish miles "Farfegnugen" (RIP - cracked crank)
desert storm primer 63 T-bird "The Undead" (long term hibernation)

http://ecomodder.com/forum/fe-graphs/sig692a.png

I'd love to do that. Sounds like fun, and yes mainly for bragging rights.

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1985 300D, 237k.
1994 F-350, 6.9 diesel, 5 spd manual, Banks Turbo. 261k.
Sold: 1985 300CD- 267K

I hear the VGTs have a history of clogging up. I'd rather live with the lag of a bigger turbo and more boost that the complexities and drawbacks of twins any day.

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'83 300DT
'04 Forester XT--modified
'61 Beetle EFI Turbo
Burley recumbant

I've heard of clogging on the VW TDI's.... the reason they say it happens is because of easy driving... if you drive it hard all of the built up soot will burn off and all is well

I have no personal experience on this... but thats what I've heard over on the TDIClub forums.

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John Robbins
'05 E320 CDI - 240k
'87 300TD - 318k

i thought twin turbos were mainly for V configured engines (one for each side) so that you have less plumbing for the boost to go through, and sequential turbos were for more power through the entire range

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-Trevor

OBK #12
1980 300SD 333,XXX miles - Totaled
1986 Mazda RX-7 212,XXX miles - impounded and auctioned off
2005 Jeep Liberty CRD Limited 33,000- SEGR, Provent, Fumoto

Forcedinduction has a VNT on his 617. I'm sure he will let us know if it clogs. It would be nice to have boost off the line.

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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine