Am I insane? Carby B3 W/Weber + Rear Turbo

[sketchman]

Can't use the modern(and technically more efficient) dynamic turbo shaft seals on a draw through, at least not on a traditional draw through. When the throttle is closed/barely open the vacuum will pull oil past the seal and spray it into the engine. I suppose you could work around that somehow, but it won't work in the traditional way of just sticking the carb before the turbo as-is.

EDIT: When I had my 323 GT I had an idea to make this work. Use an EFI intake mani and TB after the turbo/carb setup. Then take out the throttle plate/s from the carb, and set it up trad draw through. Then use a BOV to reroute the charge pre turbo but post carb. Finally, you'd need a linkage between the EFI TB and the carb throttle shaft lever. This way the turbo never sees vac and the accel pump still works on the carb, but the actual throttling happens at the IM just like in a normal turbo EFI app.

Make sense?

[bhazard]

Ford did a draw through 2.3 turbo for a few years back around 79-82 or so. It didn't last long for a reason.

[Spike]

Lots of information! My bowl float is already the nyoprene? (something like that lol) black kind. To what I've read, you guys are spot-on.. no intercooler for me, either. Small turbo, max 3-5lbs of boost. I don't want a lot, just enough to say "Mwuaha, I have a Weber and what's that on the back? Oh yeah!"
Had a guy a few days ago (was checking fluids at a gas station) say, "Is that a Festiva.... with a racing carb?" Cracked me up.



I'm sure I'd need an electric pump with a turbo setup, so that'll be first.. any idea what pressure pump I'd need for a small turbo?

Def. going push-through if I do this. That draw-through didn't even have the sexy turbo sounds. :p

[Spike]

Here is a guy doing it now...

http://www.rx7club.com/old-school-other-rotary-63/boost-prepping-ida-weber-1049699/

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Thanks for this! Very usefulz.

[Rocketman]

Wideband for tuning will be a must - I think you may need a pressure regulator, enough to overcome boost pressure. If you normally run 5psi fuel then add 5psi boost you'd need 10psi from the pump

[Spike]

Yezzir. I've been wanting a REAL excuse for wideband, anyway.. Trying to find a cheapish carb hat that looks turbo-ready. Mmm..

[drumnerd33]

If running low boost you may want to look into rjs supercharger... Easy to mount and no need for intercooler at low boost.

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[eurotiva]

Why rear turbo? It don't work

[Spike]

I'm seeing that now that I realize what's all involved. Rear-turbo wouldn't work at all. So many tabs open looking at stuff, my brain is on overload hah.

[1chrisapple]

phew in light of it all I think id just swap a xr2 engine.i know it bragging rights carb and turbo but also sounds like headache lane to me

[defprun]

Draw through carb setup, rear turbo...kaboom maybe? Lol

Sent from the trash can.

[bhazard]

Why rear turbo? It don't work

Cause its the only way to hit 11s

[Spike]

Draw through carb setup, rear turbo...kaboom maybe? Lol

Sent from the trash can.

I'd sure have a drag car. Spacerocket fire out the tailpipe and a parachute! Fo sho 10s.

[defprun]

Just careeeeeening down the 1/4 mile in a columb of flame!!!

Sent from the trash can.

[Spike]

Anyone know if this is a decent wideband kit?

http://www.ebay.com/itm/BPSX-D1-Digital-Wideband-Controller-Enclosure-G2-gauge-Bosch-4-2-Sensor-Bung-/181223455440?pt=Motors_Car_Truck_Parts_Accessories&hash=item2a31c27ad0&vxp=mtr

If so, it seems like a pretty decent deal for what's included.. right?