Turbo Upgrades

[VR4WGN]

well guys i may be the original pimpstar but im not a engine guru,but my project legnum has arrived and the engine arrives next week,its going to be a summer project now the cancer is over but,but i want to mod it out,iv been thinking of either fitting a gto twin turby in it or upgrade turbos to TD04's,please if any of you have any ideas or possible problems that id face please let me know,i have the M/T,non AYC Conversion,etc.. car is going thru a weight reduction stage aswell,most panels will be fibreglass,carbon fibre,carbon kevlar,this is going to be my buisnesses promo car so has to look the part aswell as do the part,my old legnum smoked sti's but i want this 1 to stand out,so please please any info or help would be apreciated,thanx

[bradc]

A GTO engine will be too much work, they were orientated the other way for a start and the gearbox is completely different.

A better option would be going with TD04's or GT2554R's

Subaru TD04's can almost bolt onto the stock manifolds and are fairly common, but there are a lot of different models and trying to find a matching pair can be hard. They will be good for 260kw or so at the wheels. Spool up about 500rpm behind the stock turbos.

GT2554R's will spool up super quickly as well due to being ball bearing turbos and will provide more linear boost response, and flow about 300kw ATW, so slightly better all round than the TD04's, but cost more. Fortunately they are readily available new.

[Nick Mann]

I am on the road of working out fitting TD04L turbos from a scooby WRX to a 6A13. I intend to be able to sell the parts as a kit when I have worked it out, but it is still in the design stage at the moment, let alone proving!

The front turbo will foul the larger of the two radiator fans and the oil way from the block to the filter. It will also be difficult to miss the air con pump with the elbow to the downpipes. The only real issue with the rear turbo is missing the bulkhead. That may not be so easy too! Then there is inlet, water and oil pipework to sort too!

[Turbo_Steve]

-nods- What he said.

Matching TD04s shouldn't be too hard: find someone who wrecks subarus, tell them you need a pair of turbos off a 1997/98 WRX wagon and you should be okay.

As brad says, there is no simple bolt-up option for these cars: it's either fabrication of new manifolds, or messing about with TD04s on the existing ones
The TD04s are definitely the cheaper option, though.

If you're after stupid power at the expense of driveability, TD05s are an option, though things might get a little cramped in the engine bay fitting them in. 16gs are the standard choice, and should see you past 600bhp, though if you're keeping the engine internals standard, there are a lot of questions about how lon it will last at this power output. TD05-20G hybrids will take even longer to spool but should see you over 800bhp with the right supporting work. I don't think I'd want to drive that normally, though.

Brad's choice of GT2554Rs is an extremely good one: these are awesome turbos, used commonly on Civics for their excellent spool and high flow.
A matched pair will really be quite something, and quite capable of 500bhp or more whilst retaining the cars factory response.

[VR4WGN]

thanx heaps guys,my search will begin,i was given 2x near new td04's ill post the part numbers on here and you guys let me know if theyr anygood,fabrication and feed lines are not an issue as im a certified welder and engineering is my trade field,but please keep me in the loop as i said im no engine guru but visual guru lol
thanx so much guys,i am going to need some help ovehauling my engine and gearbox to rebuild it so if theres anyone who is interested in mby helping me or doing it for me ill consider deals on kits or whatever you may need,thanx heaps people
~Q~

[Ghost_2008]

Now I really want 2 GT2554R!!!!!!

[Nevman]

So do I !!!

[djb160]

have a read through these for a start
http://www.clubvr4.com/forum/showthread.php?t=6405
http://www.clubvr4.com/forum/showthread.php?t=22724
http://www.clubvr4.com/forum/showthread.php?t=21352

This ones for the members
http://www.clubvr4.com/forum/showthread.php?t=7245

[Madhav]

I'm also doing a project with a pair of kkr turbos, are also good for 300kw, spool up quick and are cheap, new and come with a 1 year warranty. They will need supporting mods obviously, will find out more in the next 6-8 weeks as they are fitted.

[VR4WGN]

I'm also doing a project with a pair of kkr turbos, are also good for 300kw, spool up quick and are cheap, new and come with a 1 year warranty. They will need supporting mods obviously, will find out more in the next 6-8 weeks as they are fitted.

keep me informd plz

[Madhav]

Check my members thread on ozvr4, I'm away for the next 8 weeks, but hopefully some of the west Aussie blokes will keep us all updated.

[Oblivion]

Wow another seriously quick VR4 in the works
I know a few people have said in theory its possible to make more than 600hp but has it actually ever been done?

[djb160]

I think someone(Valmes?) posted a link somewhere to the JUN car that was about 500-600 from memory.

[CANDEE]

I think someone(Valmes?) posted a link somewhere to the JUN car that was about 500-600 from memory.

That had a 4G63 in it though....

J

[djb160]

OKay it was the other one then. Endless?

[Goku]

I'm pretty sure the jun one he's referring to was a 6A13TT

I remember looking at the picture quite intently.

However, I remember him saying it was around the 500hp mark.

[bradc]

They did a 6A13TT one with two TD05's that made 550hp

[Oblivion]

So no one has yet to go past 550? hmm...... Apart from the displacement and turbos, are GTO (3000GT) engines much different? They regularly achieve big numbers

[Nick Mann]

Yes. They spin the wrong way.

[JHLT]

what about 2 t25g turbos?