Best 8-71 blower

I was wondering what you felt is the best 8-71 blower. DMPE, PSI, SSI, Kobelco Superman (which isn't made anymore), anyothers?

 

We ran a PSI with ERD/PSI mods to it, made around 40psi in a BAE setup. Before we had the PSI we had an SSI, good blower just didn't make as much steam. I've never ran an M5 or M4 8-71, Darren makes very nice stuff though so I'm sure it's a tossup between the PSI and M(4/5). On both the DMPE and PSI you can get a billet case, good idea if you can swing the $.

Brandon Booher
NHRA TAD #34

 

If your PSI setup made 2200 HP how much less do you think the SSI made?

Or another way to look at it, how much more fuel (% or GPM wise) was needed for the PSI?

 

We didn't have a flow meter on the car during those years. I can tell you we went about a tenth and a half quicker with the PSI vs. the SSI. We were the first T/D to run a 5 second pass in 2007 with the PSI setup. When we did the mods, in the interest of fair reporting, we didn't pick up much at all...just a bigger bill. It obviously helps at lower overdrive, but we were unlimited and spinning the blower 46%.

Brandon Booher
NHRA TAD #34

 

What kind of times and how much did the car weigh?

 

The first "5" was a 5.99 @ 228. We had a BAE5 with PSI 8-71HH, Lencodrive 3 spd. and a Coan Converter. The car/driver was right at 2100 lbs.

Brandon Booher
NHRA TAD #34

 

Likely very true, it has been several years since we have ran a roots setup. Darren is great to deal with and can answer all your questions, give him a call.

Brandon Booher
NHRA TAD #34

 

Can these be had in the 8-71 size ?

 

M5 ??? If you don't mind restriping often and replacing cracked cases !

The subject is 8-71s and I don't believe the M5 is offered in an 8-71 version.
I ran in the Protopoutlaw circut when the rules only allowed 8-71s with Brandon Booher and the baddest cars in the group were Brandon and Phil Esz and both had 8-71PSIs
We had one guy in the group that had his 8-71 superman modified as a M4 and he had nothing but problems with it.
Back then I ran a Fowler modified K11 8-71 superman and it ran very well but...the PSIs still made more boost.

 

Mike,....not to butt in but,..Do you get more runs using more lube gel, or are you saying you will restrip the blower more often using to much Lube Gel,...????

what is the lube interval you recommend,..after every run,... once the alky and moisture is gone,....or after each weekend...????


Vic

 

Mike. I know a guy who uses an M5 and his crew chief told me that they have cracked 3 cases so far .... no backfires involved and he is not the only one that has told me of similar issues.
I suppose that Kobelco never had a problem with cracking rotors either ?
If you want to bow to DMPE thats up to you but I am not impressed with a lot of things that I have seen from there.
Don't get me wrong , they have made some nice stuff but they have also had more than their share of problems as well and I think using your customers as guinea pigs and charging them premium prices to test your theories is wrong.

Youngone , from a guy that raced in a 8-71 class I would say that the PSI 8-71 was the best but the PSI ,SSI and Kobelco Superman are all very competitive and all 3 have pros and cons.

 

I had to practically GIVE my M5 away as it had so many cracks! Not gonna say anymore!

 

The relationship is... there was a problem with the rotors and how many customers had to eat the expense of those defects as well ?