Mid 2000s 14-71 blower comparo

Broke my 07 littlefield hhr. Trying to replace it with something as good or slightly better. Does a k8 superman or an ssi d rotor fit the bill?

 

Id say that before todays blower mods SSI was the best roots blower around. I worked on a dragster in the early 90's. In 94' 95' we had a early PSI screw on a "big chief" bbc and ran 6.26 226 which was the best run for an alcohol dragster here in Alaska at the time. Richie, with a hh littlefield on a hemi next time out went a 6.22, we sent out the spacer in the psi rev limiter on the mallory mag because it was touching the 9800 rev limit and went 6.20 228, he went .20, He put a SSI on there and went 6.18 we ground down the limiter because it was touching 10200 and went .18. he turned around and went 6.09. We stopped at 10400 rpm .

Ive also work on a car with a SSI , a really good supercharger.


Marty

 

Thanks mike. Just fast brackets. 8500 and 33% with the old blower. I'll need more eventually, but not a lot. The LF was probably capable of anything I would have ever needed to do. It was a small top; I see quite a few with the large opening but assume they won't be as good?
I haven't found any k11s right now but suspect they will be a little out of reach.

Marty, thanks for the feedback. SSI told me I would need at least a d rotor for what I'm doing. Currently leaning that way after reading a bunch of scary stuff about pre-k11 kobelco rotors.

Any other places to find a used blower besides here and RJ?

 

I agree. K-11 aren't out there. Fowler took over kobelco and he build the exact same blower as they didn't 10 years ago and sells for the same price as 10 years ago. 7700$. Can't complain. His modified blower is ok but not great. Dmpe stuff is ok but after all the upgrades to get somewhere you'll pay 12-14k. Janis prolly has something in your budget and price range from bone stock to Nhra level. Hammer super chargers are good as well but if your on a budget there is better choices.

 

What is a better choice if you are on a budget?

 

Well if you can find a used m4 or m5 without a crack those sell for around 8-10k
A new fowler unit sells for 77 with spacer and I'm pretty sure he can set you up with the proper spacer now
That lb20 has a lot of guys happy out west. Tractor pulling guys say the don't fall off after running em hard
The lb-22 is nice unit
Then You can start with going to guys like Janis , hammer, billes,
Also try Jon at racing resolutions. He always knows guys looking to sell blower. I ran a m5 with a cracked case for 5 years and it was never a problem. So don't be scared of that crack from Darren machining the case to thin. I can say this. My bbc made 2100 hp with bone stock kobelco. Switched to m5 was only change and made 2375@9500 on dyno. With a cracked case! Hope some of this helps.

 

Here comes my .02:

You can't save anything from the old blower ?
X 2 on Janis. An "appalachian hillbilly" told me Janis has a very good low budget mod.
There is a superman on RJ right now. See if it's a K11. It's in Maryland and so am I. I could go look.
Don't forget JR and Robin at RBS Superchargers. They update their website every day.
Check with Fowler on used also. Tractor people will trade 6 at a time.
As always great advice from the other posters. Thanks ITA...

 

One of the smartest guys in the business looked at the pics of mine and told me I'd better say a few nice words to it and move on, it has took its last breath. Damaged k8 rotors and a big chunk out of the case, including part of the hat sealing surface. The 9" snout is still good! Lol.

The supermans on RJ are not k11 or I would have bought one already. Appreciate the offer though.

 

hi all!
could someone educate me on SSI blowers,as i read some posts that name them with a rotor letter,and ads on RJ name them with "F3" after the standard blower case size...quite confusing...

 

Here is the history of the 14-71 high helix retro as I understand it. I would love for others that were around then to comment or correct.

1. SCS introduces the 120 degree (high helix) retro blower around 1987. I actually have possession of one of these at the moment. Interesting that this appears to be "superman style" in that the rotors sit pretty far back from the front bearing plate. Someone attempted to run this blower in Top Fuel and it got banned. All previous and subsequent Top Fuel Blowers are 60 degree (std. helix) and useless to anybody except for maybe NHRA Comp Eliminator. This blower makes a bunch of heat up high and will run ~6.40s on my bracket dragster.

2. Through the 90s other companies start making hhr blowers. These are all large top blowers and I assume aren't much better than the SCS above.

3. 1999 SSI builds the D rotor with a small top. Unclear to me when the rest of the companies shrunk the inlet to the blower. I think previous SSI's (b and c rotor) were available in hi-helix, but I think they were large top.

4. About 2002 Kobelco makes k8 rotors and releases the superman for overdrive restricted classes. It seems to me that any blower from this era with a small top (Littlefield K8, Kobelco K8s, Kobelco K8 Superman, SSI d-rotor) is capable of running very low 6s on my bracket car.

5. 2008 brings about the K11 rotor and obvioiusly the K11 superman, DMPE modded supermans, the DMPE m5, Littlefield LB20 (which I think is a k11 rotor in a redesigned case?), SSI F series (F2 and eventually F3, F4, and now F5) . These blowers all have the ability to lift the heads off of my bracket motor or run 5.90s if it happens to make the finish line.

No idea where PSI fits in. There are also Mooneyham, Kuhl, and some others from this era that all seem to be cast rotors. I think all of the ones on my list above are billet rotors with cast cases.

 

That is what i call Education!
so an SSI F3 is much newer than a D rotor..
thanks a lot!!!

 

Smoken joe on here may have a k11 modded