With how cheap RS engines are (and ECUs) it seems like it would almost be a straight draw.

Organize a rally sprint!

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Brap Brap.

You are forgetting the difficulty of changing/merging two wiring harnesses. OBD1 vs OBD2 and Impreza vs. Legacy. The parts might be cheapish but the amount of work is astounding. Run it with stock minus turbo and put the turbo back on once allowed. Or tow a bit further and run a couple NASA events.

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NoCoast
You are forgetting the difficulty of changing/merging two wiring harnesses. OBD1 vs OBD2 and Impreza vs. Legacy. The parts might be cheapish but the amount of work is astounding. Run it with stock minus turbo and put the turbo back on once allowed. Or tow a bit further and run a couple NASA events.

I suggest an old ej22 if you really want to swap it, pretty sure the turbo ecu will run it just fine.

I think grant's idea to tow is best.

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NoCoast
You are forgetting the difficulty of changing/merging two wiring harnesses. OBD1 vs OBD2 and Impreza vs. Legacy. The parts might be cheapish but the amount of work is astounding. Run it with stock minus turbo and put the turbo back on once allowed. Or tow a bit further and run a couple NASA events.

Glad everything I have anything to do with is OBD 0.0

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John Vanlandingham
Sleezattle, WA, USA

Vive le Prole-le-ralliat

www.rallyrace.net/jvab
CALL +1 206 431-9696
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john vanlandingham

Glad everything I have anything to do with is OBD 0.0

Yeah, there's like a total of 6 wires in the engine compartment of my Opel.

So does anyone actually have any experience with gutting a turbo to use it to run NA? I have a blown TD04 from my old WRX engine sitting in my basement. Still in the process of locating a 2.2 NA to swap over, but in the meantime I want a backup plan in case I can't find a good one by October 29th.

No, but when my turbo blew up, the car made 50hp or so. Nice thing is you could probably run 80 octane fuel and not ping

Gas stations sell 85 in reno... I've never seen lower than that though ... :p guess maybe put it in a clear container and let it sit in the sun for a few hours ? hehehe

I think the "gutting the td04" route is a great choice. I would combine that with track days, and some nasa events (ran with a functional turbo) .. I'd imagine you'll be allowed to run turboed before you get a full 22 coeffients or what ever the magic number is these days...

Did you offer to use a 28mm restrictor? while that will add some costs (buying one) you can sell it when you're done to hopefully recover 60% of the cost, and no messy wiring issues.

Yea, I am aware it will have pretty much no power. But if I can't locate a good NA engine before my first rally, then its a waste of an entry fee and time, and having a gutted turbo could be used as a backup. I would rather rally with 10 hp then not rally at all.

But I am curious how people have gone about it. Completely remove the shaft and TIG weld the resulting holes on the turbine and compressor? Machine off the blades and put the shaft back in? Any other ways?

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MConte05
So does anyone actually have any experience with gutting a turbo to use it to run NA? I have a blown TD04 from my old WRX engine sitting in my basement. Still in the process of locating a 2.2 NA to swap over, but in the meantime I want a backup plan in case I can't find a good one by October 29th.

Best way to do this is to remove the turbo completely and make an adapter pipe to hook up the exhaust and remove the intercooler and route the air filter/MAF directly to the throttle body. It will still be godawful slow but it will flow better than through a gutted turbo.

Dave. He'd also have to deal with coolant and oil lines.
There is no intercooler since it was a PGT car right?
Can you just remove the compressor wheel and turbine wheel but leave the shaft hanging out?
Or remove all the fins from the compressor wheel, though then you'd have to think about shaft balance.
Call and ask to run it completely stock. A stock turbo Legacy weighs a ton and has less power than many Open Light cars to begin with.

the air scoop i believe just directs the air onto the tubo, so ya no IC to remove. Actually i have a 22T motor in my storage unit (complete with turbo.. think no shaft play but i'de have to look at it)


if you are a cheap bastard like me, you want the least amount of stuff to buy...

What about some sorta Air bypass pipe for your intake air ? so you re-route your intake air directly past the turbo all together, but leave the turbo there. Maybe jimmy rig some sorta filter infront of your turbo so the turbines don't get damaged from stray dust/sand/gravel/pebbles... your turbo will spin (probably less due to less air flow / power) and it will get fully oiled, but your car will be NA, and legal for Open lite. and the scoop will direct air on it as well ... use the air bypass on a couple of RA events.. run a nasa event and apply .

maybe ask about a 28mm as an option to let you run pgt or open sooner. ? probably easier time asking for PGT

I have talked with him about running it stock, but they wouldn't allow it. Never mentioned a smaller restrictor. After taking a closer look at my turbo seems I may just remove the compressor fins since that will slide right off, and take a die grinder or a lathe to the turbine shaft. Mike said that the only problem with the gutted turbo idea is inspecting it during tech to make sure it really is a gutted turbo. Proposed the idea of drilling and tapping a hole big enough to shine a light into, or stick a screwdriver into to feel for blades, then have a bolt in it otherwise to plug the hole. He said that would be fine.

I will be looking into it this weekend for sure. Might even be able to use my TD04 turbine, and put the Leggy turbo compressor on it since it has the elbow at the inlet, and be able to save myself from ruining the leggy turbo completely.

I also am going to look into bypassing the thing as a whole. I was having a brainstorming session with my friend and he suggested that. Was coming on here to post that idea when I saw you already mentioned it.

Have you talked with Carl (the ZipTie Rally guys in MN) about how they ran their STi engine sans turbo?

From what I got from him (besides the $$ internals to try and make power with it). They just basically created a bypass pipe from where the uppipe bolts to the manifold and ran it to where the downpipe bolts to the rest of the exhaust. A bit of a pain to do in the garage, but a decent exhaust guy to be able to do that pretty quick.

I'd check the oil/coolant setup. I didn't ask that when I was talking to him. There's a decent chance that you might just be able to plug the lines, but if worse came to worse running an oil line to bypass oil shouldn't be too bad (I don't think any of the ends are odd at all). The coolant should be pretty easy as well.

Good luck with whatever you end up with though. I think I'm just going prod-gt and running nasa for a little while next year.