What Turbo?

[Redlyne_jr]

Trying to Get some ideas on what i should run turbo wise.. i don't want to up the power to a ridiculous amount but something that can still be used as a Daily Driver.. Somewhere around the 300WHP range.. now i was looking at the ct27 off of ATS' site and it looks like a decent unit.. what kind of power can a CT20b support... anyone running a ct27? lets here some opinions and or feedback..

[Mista.2]

ct27 its a great unit as far as i know itll make power till redline...wont run outta breath at 5500rpm like the stock ct26. that what im putting in mine anyways. :poosie:

[avow]

there are very few mr2s running at around 300whp. thats like the number people aim for with like $3000 turbo kits. i am about to put a ct20b in my mr2 (swapping out the ct26). it spools a bit faster because of its ceramic fins and can hold boost right to the redline unlike the stock ct26 which drops out at around 5500 rpm. however on all stock replacement turbos i doubt you will see much more then 250 whp. someone correct me if i am wrong.

[Redlyne_jr]

Originally posted by avow
there are very few mr2s running at around 300whp. thats like the number people aim for with like $3000 turbo kits. i am about to put a ct20b in my mr2 (swapping out the ct26). it spools a bit faster because of its ceramic fins and can hold boost right to the redline unlike the stock ct26 which drops out at around 5500 rpm. however on all stock replacement turbos i doubt you will see much more then 250 whp. someone correct me if i am wrong.

doesnt the jdm ct26 have ceramic fins??

[962 kid]

GT28rs ftw - perfect turbo for what you want.

[Redlyne_jr]

Originally posted by 962 kid
GT28rs ftw - perfect turbo for what you want.

but it has such a gay name.. "disco potatoe"

[962 kid]

Pretty funny considering that the MR2's nickname means the same thing as shit

[1slow7]

Originally posted by 962 kid
Pretty funny considering that the MR2's nickname means the same thing as shit
game, set and match....

:rofl:

[Redlyne_jr]

Originally posted by 962 kid
Pretty funny considering that the MR2's nickname means the same thing as shit

no..nooo... your thinking of a #2 not a MR2

Nice try though:thumbsup:

[962 kid]

deuce = #2 last I checked ;)

[Redlyne_jr]

ya but who says im gonna go drop a mr2??comon deuce i can agree with..

[Redlyne_mr2]

stay away from 20bs, they are pretty much the same price as 27s without the reliability of the 27, both have pretty much the same performance.

[avow]

Originally posted by ~Porsche~


doesnt the jdm ct26 have ceramic fins??
true. the jdm ct26 spools faster then the usdm ct26 (steel fins). however ct20b can still hold boost longer.


Originally posted by Redlyne_mr2
stay away from 20bs, they are pretty much the same price as 27s without the reliability of the 27, both have pretty much the same performance.

what makes the ct20b more unreliable then the ct27?

[red99600]

older internals, the ct27 has newer generation internals

[heavyD]

Originally posted by avow
what makes the ct20b more unreliable then the ct27?

CT20B's are used for one thing and really you never know how much mileage is really on the turbo. Secondly a few of us have first hand experience with CT20B's that looked great physically, had no shaft play but ended up having blown seals and repairs are costly for the 20B.

[heavyD]

Originally posted by red99600
older internals, the ct27 has newer generation internals

The CT27 uses the toyota CT26 turbine wheel and a Garrett 46 trim compressor wheel, upgraded thrust bearing, and porting done on the exhaust housing.

[jvillain]

what kind of power can a CT20b support...

It will support 300hp but it takes a lot of other mods to get you there.


stay away from 20bs, they are pretty much the same price as 27s without the reliability of the 27, both have pretty much the same performance.

I have been racing and street driving on mine for 4 or 5 years now. Including big long lapping sessions and it has no issues what so ever.

Me personally I will never touch another rebuilt turbo again. That includes a 27. Others will have different opinions.

If I was gunning for 300hp I would pick the dancing spud. You are still going to need some supporting mods to get there but the spud is made for that range.

[Ek9Max]

I'm in Jvillan.

Get a ct20b.

To get 300whp you're gonn ahave to upgrade fuel pump/injectors/ecu/rail. Along wiht a turbo that can run 300whp efficiently.

Bolt on a good condition ct20b and have fun!

[Redlyne_mr2]

I've seen nothing but bad 20bs, $600 - 700 for an unknown used turbo isnt worth it IMO.

[heavyD]

Originally posted by jvillain
Me personally I will never touch another rebuilt turbo again. That includes a 27. Others will have different opinions.


Why? As long as it's balanced there should be no issues as it's simply a reaplacment of seals and thrust bearing or an entire center section. You do realize that the brand new turbos that performance shops sell are assembled by the same people that rebuild turbos. They buy new center sections and assemble them with new, custom, or ported housings.

You take a much bigger risk purchasing a used turbo with unknown mileage and condition (you don't know the real condition until you install and run it).

[stevo 27]

gt30r youll get your 300whp with lower boost levels there for you can run a bit riskyer tune (leaner A BIT) your still in school you save on gas seriously

it still spools quite fast aswell

believe it or not you can pick one up cheaper than a disco potato (i dont know why)

plus if you ever get tired of 300whp you have room to grow :dunno:

and theres nothing wrong with rebuilt turbos

[Redlyne_jr]

im considering a td06 20g ...

[Ek9Max]

Originally posted by ~Porsche~
im considering a td06 20g ...

just remember that you can't turn the boost until you upgrade fuel pump/injectors/ecu/rail. And that begin said, you'll need a externally wastegated TD06 to run low boost....

[Redlyne_mr2]

yah its an easy way to kill a g2.. the boost becomes addictive, thats how I murdered mine.

[New2Talon]

My vote goes to gt28rs.

I have never been in a ct27/ct20b powered car, so I cannot compare, but the potato is a very nice choice, albeit a tab expensive, for a DD. Someone off mr2oc (IIRC MR2Josh) is running a gt28rs, with basic bolt-ons and a ATS rom tune with 300whp, and stock fuel system.

[Redlyne_jr]

Originally posted by Ek9Max


just remember that you can't turn the boost until you upgrade fuel pump/injectors/ecu/rail. And that begin said, you'll need a externally wastegated TD06 to run low boost....

ya no i was looking at the ats Racing kit, comes with a tial and all the oil and water lines necessary.. i have a ats fuel rail and fpr i just need some 550 injectors and i would probably go the route of a rome tune from ats specific for the 20g....

[Redlyne_jr]

Originally posted by New2Talon
My vote goes to gt28rs.

I have never been in a ct27/ct20b powered car, so I cannot compare, but the potato is a very nice choice, albeit a tab expensive, for a DD. Someone off mr2oc (IIRC MR2Josh) is running a gt28rs, with basic bolt-ons and a ATS rom tune with 300whp, and stock fuel system.

how is he running stock fuel system.. i thought the fuel system couldn't support that.. is it like a 100% duty cycle and extremely unsafe??

[stevo 27]

3rd gen stock fuel system can support 300whp

[Ek9Max]

Originally posted by stevo 27
3rd gen stock fuel system can support 300whp

he's got a gen2.

[stevo 27]

i know he asked how the guy on mr2oc could be making 300whp on the stock fuel system

he's either got a 3rd gen or is running meth injection

[New2Talon]

meth injection, but still stock fuel system.

cali 91 gas too, so if you used 93/94 you should be ok, and not have to worry about your W/I system failing.

[Ek9Max]

I'm running a gen3 with water injection.

At 18.5 psi i have no issues, and made 328whp.

[jvillain]

Thats on a completely stock fuel system Max? What are your duty cycles like?

[Ek9Max]

Originally posted by jvillain
Thats on a completely stock fuel system Max? What are your duty cycles like?


Gen3 stock 540's
walbro pump
blitz ecu
water injetion running 3gph nozzle at 10psi boost

[jvillain]

Are you using a fuel pressure regulator? If so what is your pressure set to?

[Redlyne_mr2]

Originally posted by jvillain
Are you using a fuel pressure regulator? If so what is your pressure set to?
No FPR IIRC

[Ek9Max]

Originally posted by Redlyne_mr2

No FPR IIRC

stock gen3 fpr.

[Redlyne_mr2]

Originally posted by Ek9Max


stock gen3 fpr.
sorry meant aftermarket

[Redlyne_jr]

Originally posted by Ek9Max
I'm running a gen3 with water injection.

At 18.5 psi i have no issues, and made 328whp.

This is a really old thread but i was wondering.. what meth injection kit were you using max?

[Ek9Max]

Originally posted by ~Porsche~


This is a really old thread but i was wondering.. what meth injection kit were you using max?

I had a coolingmist trunk kit. VERY easy install if you get the trunk kit.

[Redlyne_jr]

how did it work like regarding duty cycle is it in relation to RPM or boost does it have any fail safes?

[Ek9Max]

I used it as a safety measure. I didn't tuned for it. I ran with just distilled water to raise the effective octane.

It sprayed 3pgh at 10psi of boost. I didn't have any fail safes.

[red99600]

i doubt you really need meth/water inj if you have a built motor.

[962 kid]

Originally posted by red99600
i doubt you really need meth/water inj if you have a built motor.

meth injection is probably the easiest/cheapest way to stack up an extra 40+ hp if you're running a decent setup already.

[Redlyne_mr2]

962 Kid post up that turbo.

[962 kid]

http://store.forcedperformance.net/merchant2/merchant.mvc?Screen=CTGY&Store_Code=FP&Category_Code=Turbo-FP

any of the ones with "HTA" in the name are what I was talking about. This is the back to back dyno that buschur did with the GT35 vs HTA GT35:

http://store.forcedperformance.net/merchant2/graphics/00000001/full/35Rcomp-screenshot-logo.jpg

[Redlyne_jr]

Originally posted by 962 kid
http://store.forcedperformance.net/merchant2/merchant.mvc?Screen=CTGY&Store_Code=FP&Category_Code=Turbo-FP

any of the ones with "HTA" in the name are what I was talking about. This is the back to back dyno that buschur did with the GT35 vs HTA GT35:

http://store.forcedperformance.net/merchant2/graphics/00000001/full/35Rcomp-screenshot-logo.jpg

is this the one you were telling me about last week?

[mr2mike]

Originally posted by Ek9Max
I ran with just distilled water to raise the effective octane.



He would fill up with 87 and run the Water Injection to get back to 91. :rofl:

[Redlyne_jr]

Originally posted by mr2mike


He would fill up with 87 and run the Water Injection to get back to 91. :rofl:

eeek run 94 with water injection FTW

[962 kid]

Originally posted by ~Porsche~


is this the one you were telling me about last week?

yeah those are them. Nice to finally have a bolton turbo that performs more like a Borg Warner or Holset instead of a Garrett. Too bad they cost so much

[Redlyne_mr2]

Originally posted by mr2mike


He would fill up with 87 and run the Water Injection to get back to 91. :rofl:
Bearspaw gas!

[mr2mike]

Originally posted by Redlyne_mr2

Bearspaw gas!

Ya, I know for a fact that shit isn't 91 at Bearspaw gas. It popped a knock sensor in my car and the car chugged like crap. Took days to drive slow/not boost to get rid of it.
I did add a lot of octane booster but I never believed that stuff actually works.

Max never ran 87 there Porsche.

[Ek9Max]

Originally posted by mr2mike


He would fill up with 87 and run the Water Injection to get back to 91. :rofl:


I ran 92 octane. and 94 when it was available.

But now that 94 is eveyrwhere in the NW I won't bother with WI now.