Which manufacturer of turbo is being used on the 8 sec cars?

 

Garrett & Precision Billet's

 

So those the only two turbo manufacturer being used?What percentage of the Garrett turbos being used is only on a K series setup?

 

Turbonetics and Borg-Warner as well. Are you doing this for statistical reasons or is this based upon a larger question here? There are certain inducer size limits (i believe 68mm for K-series) which is what drivers are going by; that and their sponsorship deals, if any.

It may be best to ask this on the Drag Racing forum since they concentrate on that sort of thing.

 

Most of the B & K series guys are using the Precision billet GT-4272R because of its proven power. Compressor inducer limit is 72.9mm, IIRC, for Outlaw Street & SFWD. Take Chris Miller and Tony Palo for example, which are running 182 & 183 mph respectively, in Outlaw trim (26" tire) with that turbo, and have gone 8.37 and 8.57, respectively.

The SFWD guys (which are on a smaller tire, 24.5"), are running in the high 160 to low 170 mph range with that turbo, and a few of them have dipped into the 8's. There are a couple of the 72mm guys that are using the Garrett GT4202R, some are BW S372R equipped, but the majority are going with the Precision.

It will very interesting if BW released an new EFR unit with that inducer size (if they haven't already). To date, The lagrest one I have read about or seen is the EFR 9180, which is a 67mm unit. The EFR turbos look extremely promising on paper, but only time and extensive testing will tell the tale of its true potential, at least on our B & K series motors. The 9180 is rumored to be 1000 hp capable, if that's the case, it should make for one badass turbo. A 72mm application would be ****!

 

S372s, Precision 72mm, GT42, etc

 

Ah. My mistake. I thought B-series was 72.9 and K-series was 68mm for some reason. But I'm not an Outlaw class person so I'm glad I was appropriately corrected

 

Mac, any word of when (or if) BW will release a 72mm EFR unit?

 

No. not as of yet, because there's no internal gate that is able to control it all. But there are other 72mm wheels available that are used and have been used this past year.

 

may i just point out that the garrett GT4202R is 74mm comperssor inducer.

 

Good catch.

Must have been the 4294 that they are running then. I'm not too familiar with the Garretts.

 

Someone has probably already trimmed a 74mm down to size, if not its only a matter of time before they do... I think I remember a few people being caught in SFWD doing that a while back.