Hi, I have resolved to go single turbo for reasons of quality of life rather than seeking extra power. The simplest drop-in kit that I can find is the HKS Special Set Up Kit which comes with a T4 turbine inlet flange but that seems to suggest some pretty big HP turbos. My engine is basically stock other than a 3" exhaust and a bigger intercooler. RHD 1997 FD3S

What are some T4 flanged turbos which are rated to less than 400hp? (I really only want 300 but figure the turbo shouldn't be operating close to it's limits?) I confess I was looking at a Pulsar 363 as it's affordable, has a good range of trim options and a 90 degree outlet elbow which is nice. But maybe too large? I was also looking at BW S200SX and various Holset items but I kinda need to be spoonfed the most appropriate A/R and wheel sizes to look for. Most other sources of information don't seem to be rotary specific. I basically want something which will behave pretty similarily to the stock turbos. Appreciate any help, thanks

 

easy answer as far as the turbo... find either a new or good condition Garrett GT3582r.... they were introduced around 2000.

 

thanks for the quick reply, I see the 3582R is "rated" for considerably more power, is it just as happy running at a much lower level? what a/r should I be aiming for?

I am a little surprised you recommended an older turbo, I thought the emphasis would have been on more modern, efficient designs (which I can't afford anyway)

 

7670 is extremely similar to the stock twins, just faster spooling, and no transition bump. Makes 300rwhp around 7 psi

https://turbosource.com/collections/...g-turbo-system

 

what are those now, over $3000 just for the turbo?
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I have an older GReddy TD06H-20G and I expect it to land somewhere between 300-350.
I should be able to finish tuning it this week, I can let you know the results if you're interested.

 

sure, I'd be keen to hear. what turbine inlet flange does it run?

I know the t4 flange probably shouldn't be the hill that I die on but it'd be a heck of a lot easier to have something that bolts onto an existing kit. I think the HKS kit is well regarded enough

 

The TD06 is a T3 size. there are a few variations in the turbos over time, too which is nice.

 

a bit oversize on the compressor but the 0.92 divT4 would support ~400 whp if you decide more might be better down the road. Not a bad price for a new Garrett turbo, on par with the far east copy cat turbos

https://www.atpturbo.com/mm5/merchan...egory_Code=GBC

300 whp/40 lbs/min puts it near the high eff center island
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Like anything else, you can pay as much as you want...

I have purchased two efr 7670 and an efr 8374 and havent paid over $1,500 for any brand new.

just sold my last efr 7670. Took many months to sell it even around the low price I paid for it.

I paired my $1,000 efr 8374 with an used $200 hks sport turbo cast iwg manifold on my FD.

On my FC I paired $1,300 efr 7670 with used $350 HKS stainless t04z manifold.

 

maybe you should check the website pretty sure he’s not trying to sell one for some other source. Turns out that it’s listed higher than what I posted …

otherwise I was only asking as new prices in general are sky high, but understand your point having picked up a new Garrett G40-900 recently for quite a bit less than what they’re retailing for pretty much every where now. These are likely leftover from earlier days and at some point nobody is going to selling a new turbo for less than cost.
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been potentially offered a pac performance manifold which is some flavour of V-band so all bets are off the table now regarding T4 inlet... maybe I'll get the manifold first and then come bother you guys about what turbines are available to suit it

 

well it will go against your goal some, but certainly understand it from the cost and ease of use perspective. It’s all give and take when a budget is involved.
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Unless it's free a split pulse T3 or T4 will give lower boost threshold.

 

if i were you i would buy an excellent condition Garrett GT3582r. ball bearings, billet compressor, the first really modern turbo. there are tons of them around and while i have no idea as to pricing i will bet you could buy one for $500. so what if it makes just over 400. your wastegate will solve that problem. and yes, you want a T4 divided manifold. 1.06 back end.

just my opinion.

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I was probably thinking of the later GTX versions, because the GT3582R is looking decent for 40 lbs/min





However, a 1.06 AR turbine housing would be more appropriate for pushing the map limits out further to the right side of the compressor map. For 300 whp, something in the lower 0.8X A/R range would be more appropriate for low rpm spool and overall response.




WRT to used, he’d likely have to buy a V-band housing separately to get there if he intends to use a V-band manifold.

 

"However, a 1.06 AR turbine housing would be more appropriate for pushing the map limits out further to the right side of the compressor map. For 300 whp, something more in the lower 0.8X A/R range would be more appropriate for low rpm spool response"

yes, for his app the 1.06 would not be the best choice...
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just to add to a couple of data points, going from non divided to a divided turbo was a huge improvement in throttle response, and there is less lag as well.
second, my turbo is rated 41lbs minute, and 350hp (flywheel) at 13psi, and so that estimate looks really good too. its currently ~9ish psi at 300hp, flywheel. 350hp@13psi looks very possible.
Thirdly, GT3582 looks fine, its got lots of headroom! like 100hp of it.

my car is a 13B-REW running the same HKS Sport manifold as Blue T2, and the HKS turbo as well. its a T04E-46 compressor, with a o trim turbine in a 0.84 divided housing with an internal wastegate.
the exhaust housing is from an Isuzu box truck of all things

 

"T04E-46 compressor" s blast from the past. i ran two TO4E 44s for 10,000 miles. they have a very nice comp map. 40 pounds per minute times 2 =s 80 =s 600 rw. the most i made was 507 rw. lots of lag from two heavy turbine wheels. a fun experiment when there were no 80 pound turbos other than the GT42 which has a frame the size of the motor.

 

Indeed it's a T3 as j9fd3s noted.

With stock fueling it seems to hit about 300rwhp @ 10.9psi (follow the P17 line) based on PFC Master's algorithm. I'm surprised it isn't more than that, but this is with conservative boost settings.

I got it tuned up to about 7-8 psi today but I had to stop because the tires are **** and it's wet and cold and wasn't holding traction so I'll need to finish in the spring, meaning these numbers might change when these high boost cells get tuned, but it should give you a good idea.

 

i'm in a unique situation, the HKS Sport kit is CARB legal, which potentially is important. then it comes with a nice divided internal wastegate manifold, so a 7670, or 8374 turbo would be the upgrade.
its turned out to be though that its a great match for the stock engine, pretty much instant boost everywhere.

 

I forgot that I have what would likely be the ultimate 300 whp single turbo for a 13B and would set you up, except that I only just realized that you’re in NZ rather than the USA. That’s too bad because there are aftermarket turbine housing options now that make it feasible on a 2-rotor. I bet it’d put even the OE twins to test. I offered it up to Mr. HKS above several times, but he’s got the local CARB deal to contend with and won’t bite.
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I just missed out on a pretty much complete td06 setup for extremely cheap but that would've meant I couldn't use my pac performance manifold and downpipe which arrived today and look pretty good. Do you US guys have much experience with that brand? One of the runners in the manifold has a bit of a weird kink in it but I can only assume there's some science behind it
Got my eye on a garret gtx3582r with a .82 turbine housing.

 

I don't think they try to sell anything into the US market other than billet plates and maybe an outsourced crank as well?

Non specially items are a hard sell into the US. I think most have given up with tariffs now too.

 

does it look like this maybe?


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which they supply for their FD single turbo kit, along with a GTX3582R Gen2 turbo for around 500 whp, I’d assume with a 1.01 AR vb housing based on the shape of this resulting dyno curve:


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looking at it closer, I might even consider a 0.63 vb housing for response if the intention is not to exceed ~13 psig boost. Reluctant to recommend it outright though not knowing all of your conditions and such.
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