I was wondering what turbo you guys go with. I want a decently laggy turbo yet still a streetable setup on a stock 7m (for now). Something about a supra with lag and then getting it handled really intrigues me. Thanks for your suggestions.
Bigger turbo guys
- Thread starter Boosthpy
- Start date
Well I've got a hypergear TR43i turbo - dunno if you can get them sent to the US but you might be able to... anyway its a 500hp T3 turbo with a .63 A/R and good for up to 20psi. I'm still running mine in at the mo, but it starts spooling at ~3000rpm although when it's been fully run in it should start spooling at ~2500rpm i've been told
So yea... not really laggy but it's a pretty awesome turbo
They also have a TR44 which is a bit laggier but its a 600hp turbo.
So yea... not really laggy but it's a pretty awesome turbo
They also have a TR44 which is a bit laggier but its a 600hp turbo.
I use a masterpower T-61 T4 .68 A/R cold, .70 A/R hot. My 1jz really comes alive above 4000rpm. mainly due to the large cams, but it hits positive boost at 2300 rpm and full boost between 3500 and 4000 rpm.
IMO it is a very strong turbo on the 1j. It makes good power down low so you can get into the power band and is still capable of over 500rwhp.
My t-78 33D was useless below 4000 rpm, I would see 3-4 psi at 4000rpm, but at 4700 rpm it took off like a rocket. That sounds fun but i would be 3 lengths behind a bpu 1jz on a rolling pull and need to hit third gear to catch up. both cars running 13psi.
I really think you should rethink the idea of a big turbo so you have turbo lag. If your running a stock 7m you wont be able to handle the power of a larger turbo. My t-61 isnt laggy and at 18 psi on a 1jz it makes ~420rwhp. A 7m should spool a turbo earlyr than a 1jz, so to have lag your gonna be looking at atleast T-70 probably .96 A/R which can make 700whp, at 12-15 psi your gonna be maxing out the stock fuel system. Your car will be slower than stock. Your gonna be spending alot of money and not getting much out of it. I no this because it is what i did with my t-78. I was very disapointed and swapped in a t-61. Take your money and do BPU, then when you have maxed out the stock turbo upgrade it.
I'm not meaning to shoot you down, i just don't want you to feel like you wasted your money.
IMO it is a very strong turbo on the 1j. It makes good power down low so you can get into the power band and is still capable of over 500rwhp.
My t-78 33D was useless below 4000 rpm, I would see 3-4 psi at 4000rpm, but at 4700 rpm it took off like a rocket. That sounds fun but i would be 3 lengths behind a bpu 1jz on a rolling pull and need to hit third gear to catch up. both cars running 13psi.
I really think you should rethink the idea of a big turbo so you have turbo lag. If your running a stock 7m you wont be able to handle the power of a larger turbo. My t-61 isnt laggy and at 18 psi on a 1jz it makes ~420rwhp. A 7m should spool a turbo earlyr than a 1jz, so to have lag your gonna be looking at atleast T-70 probably .96 A/R which can make 700whp, at 12-15 psi your gonna be maxing out the stock fuel system. Your car will be slower than stock. Your gonna be spending alot of money and not getting much out of it. I no this because it is what i did with my t-78. I was very disapointed and swapped in a t-61. Take your money and do BPU, then when you have maxed out the stock turbo upgrade it.
I'm not meaning to shoot you down, i just don't want you to feel like you wasted your money.
what other mods do you have done to your supra? without proper mods you shouldn't go with a bigger turbo.
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Boosthpy;1126595 said:
I want to try to understand your "I want lag" concept so badly,
But it's just not clicking on my end...
Yes, it's cool to watch Youtube videos with 1000hp MKIV's that lag like all of holy mother, hit full boost and gain over whoever they're racing...
And sure, it seems really cool and awesome to watch...
But there's a fine line that should be drawn on a stock-ish 7M setup.
Now, of course, I'm only making assumptions here,
But judging by feel of your original post, I have a feeling you're not exactly building a 9 second drag car.
Food for thought...
At the recent Annual Chicago Supra meet...With exception of a few...
It was really quite hilarious seeing the BPU MKIV's (stock twins) and BPU MKIII's (CT26) pulling better times than those that just slapped on a huge turbo.
I shit you not, literally 70% of the fastest Supra's that night only had basic performance upgrades.
Get off the "I need a big turbo" rush and snap back to reality.
If your power goals absolutely require a big turbo (ie. GT40+, T78/88, etc)
Then so be it...But at that point, I'd hope you've got enough supporting mods for reasoning.
Cliff notes...
There's NOTHING fun about trying to explain to the VTEKKK Civic with the shopping cart wing beside you why you just loss that race against him.
:nono:
Now to answer your question with detail:
Assuming you're currently using a CT26,
Anything beyond a "bolt-on" turbo is going to feel like some extreme lag to you. What seems to be a really popular and reputable turbo is a Garrett GT35R.
Why? It will make great power, by standards of a medium-frame turbo, has quick spool, (but likely laggy enough to satisfy your butt dyno), and has a trusted name behind it.
Jeff
I have seen a lot of recommendations about Turbos but I would never consider a T3 or a small frame CHRA for a supra with any motor 3.0 or 2.5 liter.
I have a 60-1 T4 with an "O" trim .70 turbine housing and it spools, great compared to many others, and this is in my ultra light Z car. That being said I have street raced dozens of corvettes and Vipers that gave it the 1 gear pull and they were confident that they beat me. No matter how much I taunted them they wouldnt go again.
Now the ones that did give it a second try, always got destroyed, but they were never the ones to do a 2 second (single gear) race.
Even the 60-1 at 16 psi makes close to 400 RWHP and is very fun to drive.
Please get a wideband before you make any changes.
I have a 60-1 T4 with an "O" trim .70 turbine housing and it spools, great compared to many others, and this is in my ultra light Z car. That being said I have street raced dozens of corvettes and Vipers that gave it the 1 gear pull and they were confident that they beat me. No matter how much I taunted them they wouldnt go again.
Now the ones that did give it a second try, always got destroyed, but they were never the ones to do a 2 second (single gear) race.
Even the 60-1 at 16 psi makes close to 400 RWHP and is very fun to drive.
Please get a wideband before you make any changes.
I guess I should refrase my question. I did not mean a 1000whp turbo or something that will take me decades to spool I am just so used to seeing people on these forums wanting full boost at 1500 rpm. I was just wondering what turbo setups some guys run besides the upgraded ct's (put a 60-1 on and the shaft broke with 5 miles on it.) I prefer a little lag opposed to the small turbo "supercharger" effect. I am leaning towards a 60-1 like you say arz or that t-61 sounds pretty great as well.
a really good aftermarket turbo is the Lipp Boss turbo, its a direct bolt on to the 7m, its a larger turbo and will out perform any CT turbo, they are also very very reliable and will last. they are expensive though, i just ordered one from horsepowerfreaks.com and it was just under $1700, but thats with new oil lines and everything. i had a ct 60-1 on my 7m for about 8 months and it just went out about 2 weeks ago.
Is it flanged like a ct26 as far as down pipe, oil lines etc (I have the mdcmotorsports ss oil line kit.)
lag is relative to the user... i run a 67mm with a .81ar housing and i have yet to be beaten yet. I drive around normal shifts at about 3k or so, and when i want power i bring the revs up to about 4k first. Using this method allowed me to eat up a z06 on the highway from 70mph and he did not gain a fender on me in the beginning either.
Pull up some vids on you tube or what ever and take notice against the big v8's the "big turbo" guys don't give up much at all.
Pull up some vids on you tube or what ever and take notice against the big v8's the "big turbo" guys don't give up much at all.
The main point is to get the largest area under the curve. A properly sized turbo for your setup won't lag horribly.
Many of the guys with monster turbos also rev higher to be able to use that powerband.
Modern turbo design is also a big part of this as well...
Many of the guys with monster turbos also rev higher to be able to use that powerband.
Modern turbo design is also a big part of this as well...
i am still of the opinion a pt67 is the baddest street turbo. full boost by mid 4k and pulls hard to redline. you also have a fairly wide powerband without having to rev higher than stock. its an easy 500rw turbo on pump gas, and mid 600rw on high octane.
A very good street race turbo is the Stage 4 with the 60-1 compressor wheel. You will run short on top end if you 1/4 mile race it. The Stage 4 is also called the "O trim". same thing.
The Boss turbo will direct fit on the 7m with the only change needed is that you replace the oil and water lines. I am almost sure that no other turbo will work with the stock Toyota lines for oil and water.
If you use the stock Toyota O2 housing,elbow, there is no reason to change to a after market turbo, you will kill it!
The 60-1 is also a low pressure wheel so you may max out the boost at 22-25lbs. This is also a good reason to use this turbo because you don't need to have a "built motor". With injector's and fuel up grade it will run.
Greg
Lipp/SS
PS, you do not need lag for the street
The Boss turbo will direct fit on the 7m with the only change needed is that you replace the oil and water lines. I am almost sure that no other turbo will work with the stock Toyota lines for oil and water.
If you use the stock Toyota O2 housing,elbow, there is no reason to change to a after market turbo, you will kill it!
The 60-1 is also a low pressure wheel so you may max out the boost at 22-25lbs. This is also a good reason to use this turbo because you don't need to have a "built motor". With injector's and fuel up grade it will run.
Greg
Lipp/SS
PS, you do not need lag for the street
I have a used a Bullseye Power 60-1 and had no problems with it. A good tuned setup will not lag much though. When you have a good built engine behind that a fine tune, and then you add in your turbo you should be right on target.