GoRideSno

Q10: It sounds like you plan to offer a fairly well deveoped kit. What further tinkering do you expect to be required with the N1 kit?
A: Scott, It will be a pretty well developed kit. It's not that there will be any further tinkering required. It's just best with anything like this if the person is a tinkerer as opposed to someone who just wants the HP.

Q11: if you are making one for the 16v do you have to upgrade your power steering pump,pump brackets,alternator and there brackets to the 32v set up as i had to do on my ex 84.
A: Again no solid plans for a 16 valve kit yet but I don't see a need to change any of that when I make a kit. That would suck!

Thanks guys,
Andy K

CMW

Andy,

Manifesto... Cabin in Montana, I thought you were in ....

(Best Homer Simpson voice)
Oh yeah right... Montana. Well I will be driving up to "Montana" tomorrow then.

Give me a call on the cell. Tomorrow

Chris

GoRideSno

Ok anybody that gets the joke about the shack in Montana and not opening the packages will get a 1% discount. Hint it has to do w/ mainfesto.

PeteS

We appreciate that Ted... I mean Andy.

2V4V

If you look at the science, the Lysholm/twin screw/Whipple is going to give you most of the advantages of a centrifugal (adabiatic eff., low noise, low power to operate) with the one (and only) good thing about a Roots - positive displacement blowers provide low rpm boost.

The only racers to run a Roots blower either:
A: Have to, 'cuz the rules said so.
B: Always finish somewhere off the podium and like hot intake air and huge parasitic losses.

The twin-screw is the only way to go if you want a positive displacement blower.

Greg

Lagavulin

Sch-weeeeet!

gbyron, good post, as usual.

BrianG

OK, so pardon my neophyte understanding of the brands, but what type is the Jag blower??

The " www.canadiansuperchargers.com" link won't open for me.

I just read through the Whipple site. That soulds like THE system!! What do you propose for the supplimental engine management system, like Whipple systems supply with their kits?

Old & New

that would be www.canadiansupercharger.com

BrianG

......... and that would work!!!

Thanks!

GoRideSno

Q12: OK, so pardon my neophyte understanding of the brands, but what type is the Jag blower??
A: The Jag M112 is a an Eaton - improved Roots type blower. This is the same brand and type supercharger that are on Mercedes, Ford, Nissan, Buick, Pontiac....... Pretty much any company that puts a supercharger on at the factory uses it. Some are going to the twinscrew type (Whipple, Kenne Bell/Autorotor).

Here is the link again. www.canadiansupercharger.com



While Greg's comments are not off the mark there are some things he didn't seem to consider.
Most of the people that would buy this aren't going to be racing, they will basically be tinkerers or hot rodders who want to work on thier cars and make it faster.
There are more good thing about the roots.
The Jag blower we're talking about here would get them into supercharging at a very low cost, and I've already said I would trade in for the twinscrew parts later.
Durability, they are designed to last over 100K miles.
Low maintainence.
Self contained oiling system.
Quiet.
OEM Apperance.

The only thing the twinscrew lacks from this list is low cost. They are not cheap. But then what would you expect to pay for the "best supercharger available"?


Thanks Lagavulin, Pete.


Andy K

Jfrahm

FWIW, it takes 40 HP to run an Eaton M90 at full honk, and almost 60 for an M112:

http://www.automotive.eaton.com/prod...rchargers.html

A twin-screw would probably be worth the upgrade price.

-Joel.

2V4V

Andy,

No, really, I did take everything into considertion. The supercharged Jag may feel fast, but if you drive one on the street, you will soon be handed your a_ _ . They are not a spectacular performer above 80mph, look at the test results in the mags. Or, just go drive one. Limits of displacement, and that Roots ain't helpin' matters any.

Yes, the Eaton is the most optimized Roots blower ever, but so what? Twin-screws have also been optimized over the years, and are plenty reliable, the prices have dropped, and once again have far better adabiatic relationships than even the optimized Eaton. They also draw less HP for a given boost.

Simply put, you will always get better overall results with a properly set-up anything versus a properly set-up Roots type. This is not my opinion, this has been established fact for years. This is why nobody races with one (unless they are required to).

I know we are not talking about a hardcore full-on race car scenario, but I just couldn't ever see why you would do a Roots blower for any application. Except for a GMC 2 stroke diesel - and they don't actually produce any boost in the school bus they were meant for.

If you want low-cost, do a centrifugal (especially for those who don't intercool, eeeek!). If you want low-end boost, do a twin-screw/Lysohlm/Whipple. If you want to spend money, do turbos. For God's sake leave the Roots to the drag racers who are forced to run this antiquated piece of crap, to the OEMs who use it as a 5 PSI crutch, and to the guys who like the look of an 100+ pounds of polished stickin' out of the hood of their '55 Chebby.

Andy, you pulled off a very "clean" install with an Eaton, you can do that with a twin-screw as well.

I agreee the Jag supercharger would allow some people to have a small amount of boost, relatively inexpensively, but it's just so ancient history, and without an intercooler really has alot going against it. Especially after the first guy gets some track time at a roundy-round, and decides to run her at full throttle for more than 30 sec.

I know yours has worked so far, and I commend you for that. But you'd have more HP and TQ at the same boost out of a twin-screw, because you'd have a lower intake charge temp.

I'm not peeing on your Wheaties, it's just science.

Greg

bcdavis

A lot of us just want that little push into the 400hp range, instead of the 300hp range.

We do not need to win every street race.

We just don't like it when some dork in a new whatever spanks us.
We want to at least put on a good show.
Once you hit a certain horsepower, traction becomes a real issue...
So anything over 400hp, becomes a case of driver skill, and throttle modulation.

But right now, the stock 928 just does not have much low end grunt.

If you are going for a full on race engine, that is something else entirely.
People who want 1000hp engines, or racing engines, had better be prepared
to build them, break them, rebuild them, and spend a lot of money on the whole
process. But for most of us, we just want to be able to at least put most other
stock street cars to shame. There will always be something faster. It is just
lame when some kid in some new Mustang, Vette, Camaro, or ricer, can
kick your butt. Sure, on the freeway, we'd take them. But it would just
be nice to have the extra torque off the line, that a low level of boost
could provide... And keeping cost down is a good thing...

I'll leave the 1000HP monster engine battle to others...

Gregg K

Thanks Greg. I guess it's time to get the book on supercharging. I thought a Roots WAS a twin screw. Time to start back at the beginning. Don't ask me why I'm interested in doing this. I mean, this car is ripe for speeding tickets, plain stock. Hahaha. I think it has something to do with superchargers just being really cool and neeto.
Gregg

hacker-pschorr

Thanks for the photo!!