t3eg

Either of these turbos will be on a 2.0 gsr with 9.1 Je pistons. I want to do 11's and have between 400 and 500 hp. This will be a street car also. I don't mind to much lag but I do want full boost at 5000 rpm with massive top end. would you honda-tech experts suggest? thanx

boosted hybrid

If you want streetability then go with the t3/60-1 .82. I am running the exact same turbo on my 2.0 gsr block with 8.5:1~9:1 compression. You should get full boost around 4,500-6,000rpm depending on how much boost you are running, as well as other usually considerations for spool up. I plan on putting down close to 400whp on pump gas (14-15lbs), and probably not going to run race gas for the sake of keeping the motor alive for a number of years. Both turbo's will give you tremendous top end, but the t4 will win for the ultimate top end between the two turbo's. I dont have any experience with straight t4's, but after a ride in a 60-1 equipped .82a/r housing honda i felt like i was in a single upgraded turbo supra. Top end was breath taking, so i am trying to duplicate this with my set-up.

tygsr

My buddy runs the t4 60-1 p trim and says it spools up pretty fast. He ran low 11's with his t3/t4 so you shouldnt have a problem running 11's, you will run 10's with that turbo..

t3eg

at what boost will I hit full boost at 6000?

boosted hybrid

Probably between 15-20psi. If you are running the .82a/r housing you should be looking into complete building your head. You will have to rev out till around 9,000rpm to make good power, as well as your shift points for running the 1/4 mile. I made full boost at 15lbs on my stock internal gsr block at 5500rpm with the .63a/r housing.

bottlefedb18c1

check this out

https://honda-tech.com/zerothread?id=395618

t3eg

Ok Ive said it's a street car so which wheel now to get. the stage 3 or 5? Wouldn't the stage 5 be a smaller version of the p trim t4/60-1?

boosted hybrid

You can make 500whp with a stage 3 wheel easily. Dont buy all the hype with the stage 5 wheels.

bottlefedb18c1

i am going to drive this car on the street and it will most likely spool faster then a 60-1 with a .82 A/R

t3eg

boostfedb18 I'm sorry but Im alittle confused about what your talking about.

bottlefedb18c1

the sc61 will suport more hp and spool faster then a t3 60-1 with a .82 A/R

that is what i have learned

onetwothree

OK I gotcha, it's just I'm with boostfed hybrid being that I like to have power all at once and don't mind having a bit of lag. Sorry for the change of name, I was at my boy's house earlier and couldn't remember my password.

BudaKai

Lag=Some sort of traction, but not full real traction.

onetwothree

Well not so much for traction just the wait for that extra power to come in all at once at a higher rpm. When you guyz speak of the sc61 do u mean SC616376? And it supports more hp then the t3/60-1?

boosted hybrid

Those pictures looked to me that the turbo has a t4 exhaust flange. In my situation, I cannot run a t4 exhaust. My manifold is a max-rev flanged for a t3, my downpipe is custom made around the max-rev manifold. The turbo is probably quicker spooling than a 60-1, but how well does it work with a honda engine? When is it efficient (at what psi level)? Where are the compressor maps for it? As far as i know precision doesnt release the compressor maps. I feel very weary picking a turbo without some sort of compressor map. That car i spoke of with the 60-1 and a 2.0 gsr engine made full boost (18lbs) at 5,800 rpm. In his case, the extra 300-400rpms of laggier spool aided in traction. His redline was 9,200 rpm. Once the turbo spooled, he was gone.

onetwothree

what was is hp lookin like?

boosted hybrid

At 18lbs he was making around 450whp, he made some changes since he dyno'd it and upped the boost a bit. Previously he was making a bit over 400whp at 15lbs. This is my projection for the horsepower levels i should achieve.

onetwothree

I guess we are in the same boat. Does he have any head work or is the bottom end just built with the 60-1?

boosted hybrid

Mild P&P on the head, done by himself. JG victor x manifold, and dialed in gsr cams. The bottom end is around 8.5:1~9:1 compression. I personally like the Garret turbo's despite everyone's bias towards the precision. They are cheaper, have readily available compressor maps and are to me the standard for a turbocharger.

onetwothree

Don't know if you read it but autoex is makin 380@16psi and boostfed is makin 370@14psi and has a bit more head work done. Somethin to think about. Autoex has a t4/60-1.......

boosted hybrid

Interesting. I havent seen his dyno graphs, so they are claims. He is a reputable person though (my friend with the .82a/r 60-1). Those numbers seem kinda low to me. I have seen stock bore gsr engine's using smaller t3/t4oe's making 350whp on 14lbs, with alot broader powerband.


[Modified by boosted hybrid, 8:57 PM 1/27/2003]

onetwothree

Yeah he has dyno charts online if you do a search for him.

boosted hybrid

The more i think about it those numbers are low for a 60-1, especially the t4 variety. 300whp on a gsr is obtainable around 10-12psi easily, depending on how the tuning is with a t3/t4oe. Sounds like tuning is super conservative on those engines.


[Modified by boosted hybrid, 9:10 PM 1/27/2003]

rondigs

Any feelings on the 60-1 hifi? Haven't heard too many people running them....

boosted hybrid

The 60-1 hifi is a 60-1 wheel stuffed inside of a t04e housing. Its 10% less efficient, and doesnt flow as much as the t04s housing. Its used for tight space areas. There is no other advantage, only not being able to make the power you would want.