PeakBoostSi

Anyone have some good info on power/spool charecteristics of this turbo? Setup is a built 2.0 with PRo 1's and P&P head with Twinscroll top mount...i want to see low boost numbers also. Sorry but could not find anything specific to what i am looking for on the search engine.


THANKS!

boostedEF91

very good turbo. i'm running the s362 with a ramhorn on a built type r stock bore and works very well. i like it alot..! I'm really into all the Borgwarner turbos. your setup with that turbo should make some crazy power.!!

PeakBoostSi

Cool thanks! At what RPM are you getting full boost?
Your turbo is a bit smaller what A/r do you have>?

PeakBoostSi

I saw that S366 on your sig...how do you like that one compared to your otehr BW?

boostedEF91

i havent used yet366 yet.. my turbo full boost about 6300. it has the schwitzer cover and a 70 ex.

jnv255

i know on my 372, at around 5000RPM my car starts moving. with the one your talking about im sure youll be in boost before that

boostedEF91

yes.. i say with your 2.0 setup you'll see full boost by 7000 easy

narfdanarf

All the stuff I've seen the s368 spooled about the same as a s372 and of course made less power. Wade's s372r made 17lbs by 5300 rpm.

PeakBoostSi

That would not make any sense....how could a S368 spool the same as a S372? No way...Plus i went with a smaller a/r 1.00

PeakBoostSi

anyone have any luck finding any dyno plots with this turbo on a 2.0?

narfdanarf

Oh really, I thought you were the one asking the questions? I find it hilarious you say no way, like that's not even possible or maybe you just don't want to believe it? The reason it makes sense to everyone but you is because the s368 and the s366xl were class specific turbochargers with THE SAME TURBINE as a s372. There would be minimal if any difference in spool with the only the inducer of the s372 compressor wheel being larger and the fact it's larger means it will be making more power at same rpm level even if the pressure ratio's are different.

TheShodan

iTrader: (14)

Could you clarify this statement please? I'm not seeing where you're coming from here.

narfdanarf

which part, the fact they all "spool" the same or the fact the s372 will make more average power.

Turbo-charged

366 spools a TON faster than the 368. the 368 has very similar spool characteristics to the 372. we made 810 on a 368 with boost in the upper 30's. if we need more turbo than a 366, we usually just jump into a 372.

PeakBoostSi

The reason i say NO WAY is because after 20minutes on the phone BullsEye recommended this turbo over the S372 becasue it would make similar power but would provide quicker spool...if you are CORRECT than i should have just gone with the S366...


WHAT IS THE DIFFERENCE? THEY CANNOT BE IDENTICAL?

PeakBoostSi

I even went with a smaller A/R to help with spool characteristics...

PeakBoostSi

Do you happen to have this graph that you can share?

My mistake was not looking into it more in detail...if there is a HUGE difference in spool from the S366 to the S368 than i thought the same would apply to the 372...i will check with Bullseye and follow up with some data...i hope i didnt go to big. I was wanting 750whp with a decent spool.

narfdanarf

well then you could have went with a smaller a/r on the s372 to help with spool characteristics?

The difference is the size of the inducer on the compressor.

The t4 regular s366 will spool much faster and will definitely support 750whp.

PeakBoostSi

Turbo part#
Compressor Wheel Turbine Wheel
Ind. Exd. Trim Ind. Exd. Trim
300100-1 62mm 84.6mm 54 76.3mm 67.6mm 79
300100-2 62mm 84.6mm 54 76.1mm 66.7mm 77
300100-3 66mm 92.7mm 51 76.3mm 67.7mm 79
300100-4 66mm 92.7mm 51 76.1mm 66.7mm 77
300100-5 68mm 101.9mm 45 83.4mm 74.3mm 79
300100-6 70mm 101.9mm 47 83.4mm 74.3mm 79
30010- 7 71.8mm 101.9mm 50 80mm 73.4mm 84
300100-8 71.8mm 101.9mm 50 83.4mm 74.3mm 79
300100-9 71.8mm 101.9mm 50 95.8mm 88mm 84




So there is a 2mm difference between the S366 and the 368? And there is a HUGE difference in spool?

Why then with the s368 to the s372 there is a 4mm differece but the spool is almost the same? Sorry help me understand...be harsh i dont care! I am not the sensitive type! LOL just want to learn!

S372 BELOW
300100-8 71.8mm 101.9mm 50 83.4mm 74.3mm 79
300100-9 71.8mm 101.9mm 50 95.8mm 88mm 84

king06

iTrader: (1)

What's the power goal?

I would guess there's no such thing as low end power with either 368 or 372 since they are big turbos.

Sounds like your better choice would be a 362, that's what i wanna get anyways

PeakBoostSi

POwer goal is 750whp i was just hoping to make it there with out pushing the turbo hard...so i went with the s368 thinking the spool would not be as bad when compared to the s366...i understand how it would be night and day diff between the 362 and 368.

PeakBoostSi

Im not looking for "low end power" just a fatter powerband...dont want to have to shift at 10k evry f'n gear to stay in the sweet spot...you know? I was hoping max 9200-9500. Dont want to abuse my motor that much...I was hopin full boost at like 6200rpm? Am i asking to much out of this size of a turbo?

narfdanarf

Notice how there's 3 turbine options for the 72mm turbos, the one MOST everyone uses is the 83.4mm one, which is the same as the s368 and the s366xl(which isn't on your chart). The regular s366 is 7mm smaller which is pretty significant on the turbine whereas the compressor inducer is only 2mm smaller than the s368.

PeakBoostSi

OK i see what you are saying. Now to bang it through my thick skull...

What are the biggest factors that determine spool?

PeakBoostSi

To second that, what determines the power output?