How laggy are they.. When do you see boost. What Turbine wheels are you using on them?


Thanks

Danny

Most people that are running the .82 A/R Turbine housings are running the Stage III Turbine. I had full boost by 4500-4800 rpms with the .82 A/R housing w/ Stage III Turbine. Supposedly, the Stage V turbien is supposed to have full boost by 5500 rpms.

You will not like the 0.82 on a 1.8L motor. If you are running it one the 2.0L, you'll like it.

Step up to the 50 trim compressor on the 2.0L with a 0.82 housing.

Rob

I talked with him last night and he was telling me some of the progress he's made. Visit his site http://www.cardomain.com/id/turbomiata and check it out. He's going to have a helaciously fast car when this is done! Supposedly the motor he got from overseas(2.0L 626 motor)has almost identical charachteristics to our sr20. So, any turbo that we use should be good for him. I'm impressed at the progress that the car has made in the last 6 months.
Travis

I have been talking to Jay about turbo sizing also. he said a true 50 trim with Bci8 or something.... With the 82 housing.


How much power would I loose at high boost with the 46 trim?? I know it is a little small for that motor... But I already have it.

Danny

Originally posted by TurboMiata

How much power would I loose at high boost with the 46 trim?? I know it is a little small for that motor... But I already have it.


It will be OK up to 20 psi or so. Ryan made 392 whp with that turbo.

The 50 trim is probably worth 15 or so more hp.

Rob

Do you think I can do 420-430whp wiht the 46 trim, stage III and .82 housing??

Originally posted by TurboMiata
Do you think I can do 420-430whp wiht the 46 trim, stage III and .82 housing??

Maybe, but I doubt it. You would really have to lean on the car, and tune pretty aggresively.

Rob

The 50 trim... shouldnt have a problem??

What about a 57.. or even a 60 since I am looking for the 430 mark..

Danny

Originally posted by TurboMiata
What about a 57.. or even a 60 since I am looking for the 430 mark..
Danny

You don't need that much flow. I think that the 50 trim is a better choice.

Efficiency starts to drop off with increasing trim.... the 50 trim has significantly lower efficiency than the 50 trim. At the flows you would be at for ~430 hp, the 60 trim presents no efficiency advantage, and will just be more likely to surge on spool-up.

What are the camshaft profiles on the 2.0L motor? Low port SR20's are getting stuck around 350 whp with stock cams. The earlier high port cams are better, but S3's are needed to get up into the 410 or so range. I wonder if the stock 2.0L cams will let you flow enough to make 430 hp.

Rob

SO IF I HAD A 50 TRIM WHEEL IN A 50A/R COMPRESSOR HOUSING SHOULD I STEP UP TO THE .82 HOUSING ON THE EXHAUST SIDE ??
I WAS WONDERING WHEN DOES THE .63 HOUSING START TO BE A BOTTLENECK ON YOUR HP
IF I AM ALREADY AT 370 HP @19 PSI IS IT TIME TO STEP UP ?

Originally posted by TurboMiata
The 50 trim... shouldnt have a problem??

What about a 57.. or even a 60 since I am looking for the 430 mark..

Danny

I am guessing you meant (60 is less efficent than 50 trim)

Someone has made 428whp with a stock motor and 19psi. Not sure on the turbo But it was T3 T4 based and not a straight T4 or T series.

The 1.8 miata motor can Make 400 whp on stock cams and head. It takes 23-24psi. It was on a 46 trim. Stage III exhaust and 63 a/r...

BTW what is the garrett PN for the Good 50 trim wheel..

Thanks

Danny

Originally posted by insaneser
SO IF I HAD A 50 TRIM WHEEL IN A 50A/R COMPRESSOR HOUSING SHOULD I STEP UP TO THE .82 HOUSING ON THE EXHAUST SIDE ??
I WAS WONDERING WHEN DOES THE .63 HOUSING START TO BE A BOTTLENECK ON YOUR HP
IF I AM ALREADY AT 370 HP @19 PSI IS IT TIME TO STEP UP ?

Well, both Ryan B and Mike Mager maxed out at about 320 whp with the 0.63 A/R housing, so I am really surprised that you are making more than that. I have yet to see a car make over about 320 whp with the 0.63 A/R housing. Do you have a built motor or something?

I HAVE A STOCK MOTOR WITH S3 CAMS NO CAM GEARS !
I HAVE 50 TRIM WITH 50 A/R COMPRESSOR HOUSING
AND .63 HOUSING WITH A 76 TRIM EXHAUST WHEEL

ON C16 AND 19 PSI IN 4TH GEAR IT MADE 367 AND 340 FT-LBS
I HAVE A 2 1/2 " DOWNPIPE WITH 3" STRAIGHT BACK
THE ONLY THING I DID WAS PORT THE MANIFOLD FROM F-MAX . THE EXHAUST PORTS DID NOT LINE UP SO I PORTED IT TILL IT DID
THAT WAS AT STOCK TIMING

I CAN SEND YOU THE DYNO GRAPH AND SHOW YOU OR I CAN SEND YOU A VIDEO OF MY CAR ON THE DYNO
THE DYNO RUN WAS ON A 60 DEGREE DAY NOT TO COLD OR TOO HOT I MADE 6 RUNS WITHIN 45 MINUTES AND THE LAST RUN WAS THE MOST!
I WAS KINDA OF WORRIED B/C AT 10 PSI IT ONLY MADE 240 AT THE WHEELS . THEN I TURN UP THE BOOST TO LIKE 15 PSI AND GOT AROUND LOW 300'S THEN WHEN FOR 19PSI AND THE FIRST TIME IT WAS AROUND 350 THEN AT THE END OF THE RUNS I WENT ONE MORE TIME AND IT MADE 367HP I THOUGHT THAT WAS LOW FOR 19PSI BUT I GUESS IT IS NOT !

insaneser: Please turn off your caps lock key; it makes your posts hard to read. Also, the image in your signature is broken.

Originally posted by insaneser
I CAN SEND YOU THE DYNO GRAPH AND SHOW YOU OR I CAN SEND YOU A VIDEO OF MY CAR ON THE DYNO
THE DYNO RUN WAS ON A 60 DEGREE DAY NOT TO COLD OR TOO HOT I MADE 6 RUNS WITHIN 45 MINUTES AND THE LAST RUN WAS THE MOST!
I WAS KINDA OF WORRIED B/C AT 10 PSI IT ONLY MADE 240 AT THE WHEELS . THEN I TURN UP THE BOOST TO LIKE 15 PSI AND GOT AROUND LOW 300'S THEN WHEN FOR 19PSI AND THE FIRST TIME IT WAS AROUND 350 THEN AT THE END OF THE RUNS I WENT ONE MORE TIME AND IT MADE 367HP I THOUGHT THAT WAS LOW FOR 19PSI BUT I GUESS IT IS NOT !

Dont worry. Rob was not attacking you. Just saying what He hasnt seen before.

I can also show you a dyno of a Miata Making 399whp on a 46 trim, Stage 3 exhaust, .63 a/r, and 2.5"dp

It can be done

BTW good numbers.

you know i thought the guys inthe SE-R community would be a little more supportive of each other !! thats all i hear is those numbers are not correct or thats not possible just b/c it hasn't been done before !!
i had 5 guys on the forum tell me it was not possible for me to run 11's with my setup b/c no one else has broke in to the 11'swith alot better setup's than i have ! i can prove everything i say on this forum .time slips ,dyno sheets, video's etc.

why are we not trying to help more than trying to prove someone wrong !!

now rob i'm not trying to say anything bad about you . i know you are the turbo MAN . i'm talking about all these other guys who just start doubting your stuff before they even see the proof!!!!!!

When I tell people I have run 11's at 125 on a stock block and cams they dont believe me. Does the car last long at that no... It car will last a good bit of time running 118 traps. After that it is a game of chance....

I do hate it when people tell me it cant be done because It hant been done before. 5 years ago FWD import couldnt run 10's because it hasnt been done before. Now look at it. :D


Danny

Originally posted by TurboMiata


I can also show you a dyno of a Miata Making 399whp on a 46 trim, Stage 3 exhaust, .63 a/r, and 2.5"dp

It can be done



As engine displacement goes down, you need less turbine flow for a given power output. So, a Miata should be able to make more power than an SR20 for a fixed turbine flow capacity. I haven't seen any SR20's with a 0.63 A/R exhaust housing make that much power.