Alright, I'm trying to get a feeler for how the different Garret turbos feel.

I had a T3/4 .63/46 trim on my MR2 Turbo and it was almost identicle to a Mitsu 20G. *Slightly* faster spool. I was making 18psi by 3800 or so and that was on a 2.0L motor, no drop off in power up top, but felt a tad laggy.

I have an EK hatch with a stock GSR motor in it. It's my daily and I'm just too used to torque. I love that I'm getting 30mpg city with it, but it's gutless. Time to turbo.

I rarely drive the car past 5krpm. I don't like to attract too much attention. I'd like something that can make 10-15psi (or whatever it takes to make 250-300whp, my goal is high 12's on pump) before 4000rpm. I don't mind if it's a little choked up top as long as it's USABLE power.

I'm curious how a T3/Super 60 compares to a (stage 3 wheel) .48/46 trim T3/4...
The compressor maps look very similar.

I also like the fact that with the smaller turbos, you can run internal wastegates (saves the $200 + pipe of an EWG), since it'd be running higher boost. EWG's attract attention, and to re-route them properly costs a grip of cash.

I have an Apex WS2 exhaust, and though it's only 2.3", I love how quiet it is, and I'd like to keep it. A bigger turbo would be choked.

If you guys have experience with these turbos on a stock b18c1, that'd be great!

 

BUMP

 

sorry bro, i cant really help. i wasnt even really aware they had a 46trim t3/t4. honda-tech is the land of insanely large turbos so i dunno how many people are running the super 60 on a gsr.

i did find one dyno of a gsr tuned by jeff evans making some good numbers on the super 60.
http://forums.evans-tuning.com...=2743
looks like that thing is hitting 10psi at around 3500rpm and making some pretty good torque throughout.

 

I think the t3t4 50trim .48 a/r would be a good compromise on a gsr.

Ive ran both the t3 60trim and t3/t4 50trim on my SOHC. Low end torque is nice but too much presents other issues w/ FWD cars. My car hopped like crazy with the t3 60trim regardless of what i did.

 

I'll be using an S300 to manage boost. That way I can run lower boost in the lower gears.

The T3/super60 has a standard garret backhousing right? So if it's a .63, I could switch it out to a .8x if I had really horrible traction problems?

Like I said, I don't go WOT very often. I like to roll on power... say I was making a right turn in 2nd and rolled the power on from there.. I'd want some good torque response in the 3-5000rpm range, even if it's not at WOT... so smaller turbo is better for me, I'm guessing.

 

the .48 a/r is way to small for a vtec engine. your going to drop off up top . id stick with the .63 a/r if you do the t3 super 60. other wise i would get the t3/t04b 50 trim with again the .63 a/r. the to4b 50 trim has a very broad compressor map which is what you want if your just looking to give the gsr a kick in the pants and have a good power band. the b compressor housing is designed for lower boost to be very effecient and the e compressor housing is better for higher boost levels to a certain extent

Or are you looking for boost down in the low rpms and dont care about higher roms with the turbo. i personally think once you get boost on that gsr your going to want more then just low end power trust me. your goign to make more power on the gsr with a turbo and same boost levels then your making on the mr2. but the MR2 is a hot ****** car for that ride any pics?

 

if you felt like spending the extra $$$...i'd say getting a ball-bearing turbo like the gt28r or gt28rs would be the way to go. I have a gt28r on my gsr, internally gated, 250whp/210wtq at 10 psi, and I hit full wtq at 4100rpms. response is excellent and lag is a non-issue. tap the gas and you're building boost.

it holds pretty well until right around 7500 then starts to drop off. but with that fat midrange powerband it makes for a really fun daily driver. although i think the gt28rs would be perfect for what you're shooting for. but again ball bearing turbos cost $$$.

this is my 1st turbo though...i'd like to see how the t3 super 60 or the smaller t3/t4s compare. subscribing to this thread

 

I'll post pics when I'm home (at work now ). T3/T04 50 trim with a .63 is WAAY too big.

At least on 2.0L MR2's... those make boost around 4krpm... on a 1.8L with no load in first gear (GSR trans is so short) it probably wouldn't even spool more than 1-3psi in first.

I realize this is good for traction, but like I said, I'm rarely even in VTEC.

If I use a .63 T3/Super60, it uses the same T3 footprint as a 46 or 50 trim hybrid turbo, right?

So if down the road I wanted more power, i could ditch the T3/Super 60 and bolt up a T3/T04b?

I'd just need the downpipe to fit... compressor piping is easy to adapt... rewelding a downpipe sucks.

 

if your rarely in vtec then sell me that vtec head i got a non vtec head you can swap on there HAHAHHAHAHA

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tnt-gsr &raquo;</TD></TR><TR><TD CLASS="quote">if you felt like spending the extra $$$...i'd say getting a ball-bearing turbo like the gt28r or gt28rs would be the way to go. </TD></TR></TABLE>

I have a GT28RS on my MR2... it's stroked though with cams and headwork and it melts the tires in 1st and 2nd at only 12psi on a rear wheel drive car (that's why I have a nice FWD 30mpg daily EK). I absolutely LOVE that turbo, but they're just too much money.

If your'e lucky you can find them for $1000 shipped. Rebuilds are non-existant. The one in my MR2 just went out when my oil line got contaminated... they're just too finicky... now I have to drop $750 for a new CHRA.

I'm sticking with Garret Hybrids from here on out, because they can be rebuilt for $250-$300, and bought brand new for $525 or so.

.....though roll-on 4th and 5th gear with the GT28RS is like V8 torque..... mmm...

 

I had a t3/t4 57 trim .60/.63 on my 2.0 GSR and it was laggy to me.

I switched the turbine housing for a .48 and I LOVE THE RESPONSE.

I think this basically made a t3/super 60 when I did this?

I has tons of lower end tourqe and it still pulls hard to redline. I only lost 40whp in the upper RPM by going with the smaller housing but gained tons of lower/midrange tourqe.

This is on a 350-400whp setup. Dail driven.

 

I'd suggest something like a t3/t04b. That's "B", not "E" - specificly the S-Trim. It works out to something like 46 trim BUT its designed for lower max power & quicker spool (extra compressor blades).

My stock sohc has that, internal gate, and a .48 stage 1 turbine/housing - spool starts at ~3k & 10psi at ~4k (3" dp/exhaust). A bigger motor would do that quicker, esp if it had a better manifold (mines an HF!). This is enough to light my narrow tires up at 5k rpm in 1st & 2nd with a dx trans.

FYI this turbo is relatively the same as a super60 - the s-trim flows 37lbs/min while the super60 does 36lbs/min. If you have the 46trim already, use it. Otherwise buy a super60 and sell the old one to me.

 

Awesome info, guys. I really appreciate it. As promised... here are a few pics of my MR2:

 

i heart mr2's. Are they generally pretty hard to work on?

 

No. Hurts your back a bit reaching over, but nothing is really "out of reach".

The things that suck are clutches, rear main seals, etc... the timing belt also sucks pretty hard, and there are two coolant hoses on the back of the block that are prone to cracking over time, that totally blow. but your normal modifying and car maintanence is not hard.

Sucks running lines for gauge and electronics from the back of the car to the dash...

I guess there are a few bad points... but once it's all together and working, there's nothing like it. Mid-rear, 50/50, short wheelbase, 2700lbs.. it's just a blast to drive. There's no engine over the front of the car, and once you've got the suspension done right, you can literally THROW it into corners... it won't plow like FF/FR cars do... anyway...
'
One more question...

How do you check the oil if you have a log/cast manifold? Where does the dipstick go?

 

for what you want, you might consider finding a used greddy 18G turbo/manifold ..They make awesome mid range power..If you want really good responce for daily driving, consider a jackson supercharger as well.

 

Honestly, for what you're looking for... JRSC is definitely the way to go.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SovXietday &raquo;</TD></TR><TR><TD CLASS="quote">Honestly, for what you're looking for... JRSC is definitely the way to go. </TD></TR></TABLE>


No... the Disco Potato is the way to go. Ask tony the tiger on here

 

the dipstick goes in the same place, somtimes you have to bend it a little, but there is room between the runners to still run it.

 

props on the MR2 man, that thing is beautiful!

 

bump for more info Nice mr2

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SovXietday &raquo;</TD></TR><TR><TD CLASS="quote">Honestly, for what you're looking for... JRSC is definitely the way to go. </TD></TR></TABLE>

I like the flexibility of turbos.. I'm going to run an S300, so I'll be able to change setups completely if I want to.

That's why I asked if a T3/Super60 has the same downpipe flange in the same location as say a T3/4 50 or 57 trim. That way, if for some reason I do need another 100whp, I can swap turbos, and just get a new coupler or two for my IC pipes... I just want the downpipe to be the same.

Plus, with a turbo, you can easily manipulate your fuel mileage. If you really have to pinch pennies, you can just stay in vacuum a lot easier than with an SC.