Turbo 2.1 WBX

[GrindGarage]

Been thinkin about putting a small turbo on my 91 Auto.... Run a small t25 where the muffler lives... draw through the Flap door and add a little fuel enrichment with a 10:1 FMU... thinking about 5-7 psi of boost... small intercooler mabye a front mount like the vette setups (turbo in place of muffler)... figured it would be great with my auto always spinning around 2500 where most turbos kick in... anyone try before???

-cliff

91 vanagon auto
91 325 turbo megasquirt
72 bmw 2002 (my reliable car)
82 honda 650sc

[tencentlife]

It's been done, not so much stateside but often on the other side of the Atlantic. Peruse ShoptalkForums Waterboxer/oxyboxer forum for examples. The 1.9 is a better candidate engine, though. 8.3:1 CR vs. 8.9 for the 2.1.
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Experience is kryptonite to doctrine.

[tclark]

http://www.aatransaxle.com/turbo.htm
according to his last entry he is going ferd zetec & his waterleaker turbo set up is up for grabs

[jackbombay]

[tencentlife]

Just depends on how much boost you aim to use. The OP had very moderate goals in mind so which engine to base it on makes much less difference, although in any case beginning with a bit lower CR forestalls the need for timing and/or mixture compensations. But one thing with boost is that once you have some, you'd like some more, so a lower native CR leaves more headroom for that.

The other advantage a used 1.9 has is the lack of the rod-bolt weakness that plagues the 2.1's, at least until they've been rebuilt and had it addressed. More boost=more stress=hastening the time when an OEM 2.1 bottom end will approach failure. The 1.9's are nearly indestructible in this regard. But again, it all depends on how much boost you aim to use.

And finally, the 1.9 uses Digijet, which has an independent ignition system, so ignition tweaks can be done that can't be managed on a Digifant, if the need arises.
_________________
Shop for unique Vanagon accessories at the Vanistan shop:
https://intrepidoverland.com/vanistan/

Please don't PM here, I will not reply.

Experience is kryptonite to doctrine.

[D Clymer]

I think for a low boost application you would probably be fine using a 2.1. 8.8:1 on only 5-6 lbs of boost has been done successfully on other types of engines. If you go much above that, though, the need for fuel enrichment will become an issue. It's important to remember that a Vanagon uses a non-knock sensor ignition. It'd definitely be a 92 octane only engine, with the max boost and ignition advance tuned just below the knock threshold.

I'd like to see a turbo wbx built. Someone should do it.

David

[CHARLIE-DONT-SURF]

couple of these kicking about in the UK

http://www.schick-tuning.de/index.php?menuid=29&reporeid=14