Zer0_SpeedWorks

iTrader: (1)

-4 here no restrictor

eg_YANG

Looking forward to using one of these this upcoming season. Currently using the s400 67 now. Had no issues yet. -3 an to 1/4 npt feed line. Able to build up to 45-50 psi of boost. It is a bit laggy.

AROD

You made 50psi on the S400 67mm? what did you trap speed?

SPOOLINmatt

From my discussions with resellers and experienced people, that turbo should handle 50 psi no problem.

AROD

I just asked if i made 50psi, not handle. Did the motor make 50psi on that turbo, if it did what did it trapp?

SPOOLINmatt

Earlier posts in here made it sound like there were people thinking that was to high.

AROD

lol there was. Running "to much boost" whatever that means! lets buy a 1,500-2,200 turbo and not run too much boost..lol

eg_YANG

My best trap speed is 152,
Although my bore is 82mm with only 9.0-1cr

itspools

From my exp, and I've heard other racers talk about this, the BW turbos don't tend to need as much boost as others to make similar power. So even if it lives at 50psi it may not be needed to fully optimize the turbo.

ls_on_boost

iTrader: (5)

may I ask what power the car made?

eg_YANG

650 on the dyno at 29 psi.
Cranked it up to 45-50 a few times to collect logs during track tuning.I'd assume 800 plus.

SPOOLINmatt

damn that low compression must be murdering output

nonvtecallmotor

With an engine that isn't optimal you will tend to need/make more for the same hp..
You can over spin the turbo "over boost" and actually make less power.

fmfkid250

Sounds like there is something else going on there. Timing or something

eg_YANG

Yea the block is small for that turbo, but its already been assembled for the past 4 years, and sat. Learned a lot off this set up, so next one will have quite a few changes. But the turbo working great .as arod mentioned about the turbo making boost, due to his larger displacement, it'll make the power with less boost and out flowing the turbo. It is only rated for 900

Almtrhb

iTrader: (3)

Anybody have any new data from this unit? Have you maxed out the compressor yet? and if so what power did it make dynojet #'s!!!! How was boost? I only ask because im pretty sure mine is maxxed out. 41psi and it flatlines We added 7psi to it and it didnt change in power. You can PM me or reply here..
Thanks

SPOOLINmatt

Haha is say it's good for about 8.40's

.adam.

hahahah

Almtrhb

iTrader: (3)

Can you give me more info than its good for 8.40's.... Cuz I'm unaware of a sfwd car that's running it and went that fast.... So when I find out maybe I can laugh wit yall too.

heavy duty

I think he maybe talking about sf sfwd car. But he is full of **** if he thinks that. I am pretty sure it does not have that turbo on it now.

SPOOLINmatt

Ya that's what I'm talking about. But i dont follow the games enough to look up everyone's skirt once the car starts making fast passes. The first 8 second passes were made on a regular ole s372 so why the hell now would this turbo not be able to do that especially with the best of everything on the car, MoTeC and all?

Somebody can verify this easily that sees the car often.

BADGUYNY

iTrader: (1)

Not sure what is on the the SF car... but all of the 4 main turbo manufacturers (Precision, Borg, Garrett & Comp) have SFWD cars in the 8's. Bart from DP Racing has a Borg 72 he ran 8.8 at MIR last weekend and Ricky Everly has dipped into the 8's with his Borg 72. If your goal is 8's with this turbo you have more than enough to get you there as long as you have the supportive parts to go along with it.

Almtrhb

iTrader: (3)

Matt, Coles car tested a BW72 class limit unit. Is that Unit used to make a 8.4-8.5 pass in MIR.... Only they would know, Just because they test a unit doesnt mean they have to stick with it. They may have went to a custom precision unit for all we know.

Yea i figured he was talking about Coles car....

Thanks bro, i wasnt too worried about running the time, more or less why my car didnt go up in power after adding 7 psi of boost past 40psi!!! I know things may affect it like fuel, timimg, dyno, etc. Seems as the compressor is maxed out, i believe the turbo is only rated to 1050hp so that would explain why it was done.. On the track boost will be different also based on DA.
So far I like the BW72, it made good power without alot of boost, shall see it work in Vegas in 2 wks...

nonvtecallmotor

I went 174mph on 39psi.

JFK78

We went a best of 8.68@175.46 on the BW72mm in Cole's car @ 44-42psi, and have trapped 178mph with it on his car as well.

I also went 8.34@178.5mph with it on the Outlaw car earlier in the yr.

It's a good cost effective unit that works and is easily capable of getting you deep in the 8's.