2.0L Twin Turbo Quesitons...

[blackgtbeauty]

How easy (or hard...) is it to acquire simple repair parts like oil filters, spark plug wires, etc... and such for these engines in the states? Would friendly Legacy folk over the sea be able to get requested parts and ship them over here maybe?

Can a USDM 2.5 N/A work with a RHD dash? How about a WRX/STi engine?

[decke48]

umm im sure you can work a 2.5 n/a engine with some major wiring.. you can get jdm parts for some willing dealership over in the usa. but you have to bring part numbers and be willing to pay for the shipping and wait a 1 week or more for parts.. simple parts like oil filter, sparkplug wires, spark plugs. oil filters are just usdm turbo filters. wires unless you get an old wastespark version. its custom. COP is usdm wrx. plugs are wrx. air filters are wrx. fuel filters are 95-04 subaru fuel filters
you can find some parts at RHDjapan.com

[Huffer]

Oil filters are all the same. Turbo filters except Tribeca or 2.5L+ are same as NA.

Wiresets and plugs are easy enough to find - any dealer worth their salt would be able to get them, or you could source them aftermarket from the UK.

[Reason]

Spark plug wires can be made, oil filters and spark plugs will be easy to get.

[blackgtbeauty]

Good stuff, now should I assume the same goes for minor to major repair parts such as water pump, timing belt, head gaskets, stuff like that? Just get them from a dealership in the UK?

So if I got a USDM WRX 2.0/2.5 it would work with a RHD vehicle?

[Reason]

The problems with LHD to RHD is the steering column and turbo position. Now I say this from what I read, I have yet to do a RHD swap or seen a COMPLETE one in person.

[blackgtbeauty]

I have heard that with the Twin Turbo 2.0L, but you seem to be able to put a RHD WRX/STi engine in a a LHD drive car, why not the other way around?

[Reason]

You can put a twin turbo engine in the USDM car, but I THINK you need to convert it to a single turbo setup

[Sarra]

You can put a twin turbo engine in the USDM car, but I THINK you need to convert it to a single turbo setup

YOu have to convert to single turbo or convert the car to RHD. The steering components interfear with the exhaust manifolds, or turbos.

[Reason]

See, I know some things :wink:

[blackgtbeauty]

I understand about the twin turbo engine not installing in a LHD without turbo/piping modification,

What I'm asking, is whether a USDM WRX engine will install in my car correctly if I convert it to RHD?

[Reason]

The problems with LHD to RHD is the steering column and turbo position. Now I say this from what I read, I have yet to do a RHD swap or seen a COMPLETE one in person.

[blackgtbeauty]

The problems with LHD to RHD is the steering column and turbo position. Now I say this from what I read, I have yet to do a RHD swap or seen a COMPLETE one in person.

Your killin' me smalls.

[decke48]

i would think. it would fit.

[Huffer]

What I'm asking, is whether a USDM WRX engine will install in my car correctly if I convert it to RHD?

Yes - but the exhaust piping will have to be redone to clear the steering column.

[Reuben]

It's possible to have LHD and TT, i've seen a few. It just requires a bit of custom work, thats all. The TT setup is balls compared to twinscroll, or even a normal turbo though, i wouldn't wish it's woes upon anyone. I've got a thrust bearing VF39 on my 2L, and it's LOADS better than the TT setup - even when it spools at only 3500+ rpm. and WAY easier to make power out of, since there's nothing aftermarket for the TT's, but loads for the single's (and that's in NZ, the problem would be HEAPS worse in the states)

[theboyo19]

so is the fitment problem with the tt engine in LHD the downpiping form the LH turbo?. and the wireing through the firewall im assuming..?

[decke48]

i believe so. as the main reason

[rougeben83]

so is the fitment problem with the tt engine in LHD the downpiping form the LH turbo?. and the wireing through the firewall im assuming..?

The steering rack, brake booster and master cylinder are on the opposite side of the car on the RHD version basically.

For what youre getting (ie not much from the supposedly superior twin turbo setup), I would convert that motor to a single turbo...it's a win-win both in fitment and performance.

[Sarra]

Agreed.

[decke48]

disagreed twinscroll is the fun way to run the twin turbo :wink:

[Sarra]

If there wasn't a VOD, I'd agree. If you really want twin turbo, swap in a twin turbo Rotary engine.

[decke48]

the set up i had in my TT had a very small VOD it only happened between 5578rpm and 5590rpm but thats with some money and a real fine tune

[subba]

i found so may ways to beef up the Twin turbo setup, most of it is from Zero/Sports.

From what i understand all IHI series turbos are direct bolt up so maybe working with the combos might produce something.
http://www.wheelsjamaicahost.com/wheels_forum/index.php?topic=36977.0

Main problem is VOD and the primary restricts everything safely to 16-18 psi (anything higher and boom), Zero/Sports controller makes it seem eliminated or something like that (so i was told), i am going to see what can be done with the Greddy MSS, would be nice if a secondary could pre spool before the crossover point.

I might go even more nuts and throw a 2.5L Sti block on it with stronger pistons.


But if all that fails, my next task.
http://www.zerosports.co.jp/shop/images/0514007.jpg
http://www.zerosports.co.jp/shop/index.php?main_page=product_info&products_id=142

EDIT: Tuning the TT setup is Expensive and not much is done for it in the after market side of things, thats why people dont like it.

[Sarra]

So, someone could conceivably twin turbo a single turbo motor in the USDM? Sweet.

[Reuben]

From what i understand all IHI series turbos are direct bolt

Lies. They are completely different. What you can do is custom up pipes and extractors, and then parallel any VF's or TD's You'll need a single turbo ECU for that, since it'll effectively be simulating one big turbo.


Main problem is VOD and the primary restricts everything safely to 16-18 psi (anything higher and boom), Zero/Sports controller makes it seem eliminated or something like that (so i was told), i am going to see what can be done with the Greddy MSS, would be nice if a secondary could pre spool before the crossover point.


They do this from factory. It's what you may know as the primary running out of puff before crossover

[subba]

could you shed some light on the paralel setup in regards to getting it working correctly? i mean how do we get the ECU to work with it or would one need a something like a Emanage?

[Huffer]

EDIT: Tuning the TT setup is Expensive and not much is done for it in the after market side of things, thats why people dont like it.

True, true and false.
The reason people don't like it is because it's so damn non-linear. Trying to plan a gearchange on an upcoming hill when you're trying to get past a slower isn't much fun. With the single turbo you just run out of puff as you max out the turbo, you don't fall off the curve.

[Reuben]

could you shed some light on the paralel setup in regards to getting it working correctly? i mean how do we get the ECU to work with it or would one need a something like a Emanage?

Working parallel turbo's is easy. Just get a single turbo ECU, since that's effectively what they are. The benifits are you use two small turbo's, and the theory is a small turbo spools faster, and having two means lots of boost. The shocking reality is that you only have half the exhaust gas to spool each turbo! So i don't get the point myself. I'm sure it's not that simple though, and even though you're splitting the exhaust gas to spool them both, they still spool quicker than a single turbo of equivelent size. The downside is $$$. $$$ for manifolds, exhausts, and two turbo's...

At least it's original (very few do it), you can still say you have twin turbo's to all the girls, and you don't have to deal with vod - but you will not be on boost at 2000RPM like you're used to :lol:

[Sarra]

Twin turbos are never as effecient as a single turbo setup.

However, if you have a small turbo with an EWG, you could do a simple series turbo setup that doesn't have a valley of death. You simply plumb the wastegate part into the exhaust inlet of the other turbo.

So, as one turbo's wastegate opens, the second turbo would spool off those gasses. Would be horribly ineffecient, but you would have twin turbos... You would have to use a rather small turbo for the primary, and a second small turbo for the secondary, as there wouldn't be a whole lot of gasses getting to the second turbo.

remember, I have never done this, so I might be talking out my ass here. :p But I do believe that this is how the RX-7 works.