Gadget I am not going to argue with you. The statement says to a point, and to that point it is entirely true.

 

Tim is very right. With different pulley sizes, changing shift points, and also rear end gear ratios, im sure there are times to be picked up while keeping the Eaton down on RPM's. Since im getting a built motor, I have been playing around with every pulley size upper and lower that I can find, and trying to figure out the best pulley combo, with high boost (14-16lbs), by dropping the shift points some to keep the blower RPM's down. I belive that there is still a lot left in the stock eaton which some people just don't think. It all goes back to JDM trying to break into the 10's on a stock blower. I believe its very possible myself.

-Mike

 

One thing that some people may not know, but the Eaton puts that exact same supercharger on a dozen different cars. All of those cars have completely different engines. Eaton had to come up with a blower that would suit a dozen needs and it doesn't seem to fit ours that well. It wasn't designed specifically for the lightning and that is why it lacks a little at least in my opinion, but to stay in the 10's on it, there is some things that have to be done to it so that it can keep up.

 

I agree, the eaton was made for a couple different models of cars, but I believe it is still a great application to our motors. Don't get me wrong, the new rear-inlet, and 140CI blowers are TONS more efficient, but I think the stock Eaton is still a very strong blower, and I believe that I will see someone running 10's with it by the end of the year.

-Mike

 

what other cars get this blower?
Besides the Harley Truck>?
What SPECIFIC application was it designed for?
I don't think this come on another FACTORY vehicle. If they deisgned it for an aftermarket application and not ours then that was dumb.

FOrd has purchased how many thousands of these blowers (99-present Lightnings) and the Harleys.
compared to how many hundred aftermarket applications.

Economically your statement that it wasn't designed specfically for our truck doesn't make sense.

Where are your proofs to back up your claim??

 

Its on a Cobra, Harley, Lightning, a couple of jags. Chevy even tried it for one of there trucks before coming out with this supersport. If you want to get even more technical, look at all of the discharge ports on all of the Eatons. The M90 and smaller blowers, the discharge ports are all the same. Exactly. So I-menace did that prove my point or do I really have to find all of the cars that the 112 is on?

 

so basically it was designed for FORD.

not dozens... interesting.

nothing further is required, thank you for the offer.

 

This comes from Magnusonproducts.com
Looking to trick out your Hummer H2? This state-of-the-art supercharging system is based on the Eaton twin rotor, rear inlet roots type supercharger. Eaton is the same company that supplies blowers as original equipment to companies like GM, Nissan, Mercedes-Benz, Jaguar, and Roush. The Eaton superchargers have been proven to be exceptionally reliable and trouble-free.

 

Blowers are just like women. We all have that particular blower for our application but every now and then there is someone who needs to get rid of their original blower and upgrade to a better more efficient to their knees(I mean needs) blower. With that being said I need to switch to a better blower. And I am not talking about superchargers. Thanks, for listening and sorry for getting off topic a little

 

Unless you consider Buick, Pontiac, Nissan, and Mercedes-Benz to be FORDs, you would be wrong.

 

Thanks for the support, Mike. To expand:

That may be the source of the apparent disagreement.

Efficiency is a comparison of ideal performance to observed performance. Even an ideal compressor heats the air, so efficiency measures how much more an actual compressor heats the air than the ideal compressor.

Efficiency is measured by the heat rise at given pressure ratios (boost) and airflow. Since the airflow is related to the engine, one can predict the performance of a given compressor on a given engine. The objective is to operate in the island of peak efficiency (75% in the turbo compressor map below).



An overspun Eaton would be way off the chart to the right.

Just because adding more boost makes more power does not mean that the blower is still operating in its efficient range. For instance, assuming that the engine is infinitely strong, you could keep spinning the Eaton until it reached the point where the heating was so severe that the engine would not make any more power by adding more boost -- because the heat of compression would reduce the density of the air such that making more pressure does not actually add any more oxygen molecules.

But, getting anywhere near that point is just plain stupid. The air would be so hot that the air would ignite without spark. The engine would stand a good chance of being destroyed before you got to the point where adding more boost didn't add more power.

Of course, I think that what you are getting at is that the above analysis is only valid for a given RPM. Even if the engine would instantly grenade at 5,000 RPMs, a huge pulley would still make the engine run well on the low- and mid-range. So what we are really talking about is area under the curve (air density and HP).

Yes, adding more boost will increase area under the curve, and therefore decrease ETs, but the top end of the RPM range can get both down on power and dangerously close to engine damage. Where is the point that the loss in upper-end power outweighs the increase in lower-end power? Only the trap speed indicator will tell.

So you are still way better off getting a larger and/or inherently more efficient blower to begin with. Given unlimited finacial resources, I'm sure we can all agree on that point.

 

Tim...which Buick, Pontiac, and Nissan use our eaton 112 ?

 

They dont use the same 112 persay, but the nissan frontier uses a rear inlet 112 almost identical to the cobra. The Pontiac uses a M90 which is pretty damn close to the 112.

 

that's what I was wondering thanks. How is it that I changed the pulleys out and I made more power? (if im now really overspinning the blower) Thanks, Shane

 

If the eaton 112 was so good then why are 03 cobra guys getting new kenne bell blowers guys?

Don't get me wrong, its a good blower, but its not a blower thats made to make the kinda numbers we all want. Without added cooling the eaton is useless after 6lb pulleys.

problem solved, no everyone relax.

oh yeah, the top loaded M112 is really about 91 CI.