Eaton superchargers? Prices & sources?

californiamilleghia said:

which combination of parts makes the shortest supercharger with intake on top and exit on bottom ,  not on the ends ?

And how long would that be ?

Thanks

What size motor are you bolting it to?  You can get M45s I think in that configuration but you are limited to a very small engin displacement. 

In reply to dean1484 :

probably 1800cc -2000cc , maybe a little bigger....

californiamilleghia said:

are there smaller junkyard superchargers  for a 1500cc-2000cc motor ?

I know there are the tiny ones on Ebay etc of Japanese Kcars but they are pretty expensive compared to pick a part prices !

Common on MG's and a lot of smaller older sports cars are Eaton 45's  you can find them in Mini Cooper S and the small Mercedes sports cars 

dean1484 said:

Frenchy

I plugged in the information I have in to my trusty excell sheet I made for calculating things like this (It also calculates air speed in the pipes at a given pipe diameter that you may want to know for other reasons)

Anyway 6500 RPM with a 5.4" pulley at the crank and a 2.37 pulley on Two Eaton M62's should net you about 11.62lbs of boost on a 5.3l motor at 100 percent VE.  Realistically you could expect 8-9lbs I think and that may be a lille optimistic. 

The issue you have with this setup is you really can not go any further up the RPM range as you will be spinning the unit at 14,810 RPM in this configuration.  They tend to go boom at or over 15,000.

 

 

Thank you so very much for that   While I know I have that information in one of my old computers not having to dig through that dusty  mess and try to find all the pieces  to use it probably saved me a week of work. 
I really appreciate that.  And it saved me from scrounging for junkyard parts. 
 

As a racer I know mistakes happen and I'll be honest and admit I've missed shifts etc. running a m62 that close the the bang clang clang  point isn't the way I race. I'd rather put a pair of m90's if I can figure out if they will fit. 
As cheap as some people have bought them maybe the easy way is junkyarding figure out what can be cut off or unbolted etc. and go from there. 

yupididit said:

I have a eaton m112 sitting on my workbench from my Jaguar XJR, if you need measurements. 

So you're twin-supercharging and 5.3 jag v12 huh? Why didn't you just say that instead of spouting off engine specs? We all know those specs and dimensions from reading them all over this forum. "The engine i plan to use" so vague lol. Anyway this would be an interesting setup. 

It started out selling some scaffolding I've had sitting around. The guy was facinated by the Jaguar V12's sitting next to it but terrified because there is so much plumbing and wires etc. I showed him one without all the junk on it just enough  to see just how simple they are. 
 

I asked him how long it would take to change the camshaft in his Big block hotrod.  Since he'd just done it recently he proudly announced he could do it in a weekend. I explained you can change a pair in a Jaguar in an hour.  
I have one partially apart and showed him and he was very surprised. 
then we started talking about drag racing.   

In reply to That got him really excited and then he noticed my supercharger. I showed him what it would look like on top of the V12 and explained just using a Holley on top of it etc etc etc  

one thing led to another  and here we are 

In reply to dean1484 :

Being a fan of the 3800 Series II engines, I'd love to do a project with a supercharged one one day, but I'm a RWD kinda guy. So your info. was very encouraging to me. I did have a bit of trouble figuring out what Mercury had a Eaton on it.... till I realized I was thinking American slang!!!

You want a pair of lysolms from a Mazda millennia with the SU carbs in front, for noises...

03Panther said:

In reply to dean1484 :

Being a fan of the 3800 Series II engines, I'd love to do a project with a supercharged one one day, but I'm a RWD kinda guy. So your info. was very encouraging to me. I did have a bit of trouble figuring out what Mercury had a Eaton on it.... till I realized I was thinking American slang!!!

Is the supercharger on Buick Pontiac etc all the same?  Anybody got pictures of each? 

03Panther said:

In reply to dean1484 :

Being a fan of the 3800 Series II engines, I'd love to do a project with a supercharged one one day, but I'm a RWD kinda guy. So your info. was very encouraging to me. I did have a bit of trouble figuring out what Mercury had a Eaton on it.... till I realized I was thinking American slang!!!

89-91 Cougar XR7. Same as the Supercoupe of the same years.

But it doesn't sound as if an SC/XR7 blower is right here. They have the intake on the back, exit on top and a relatively long snout.

In reply to Will :

That might work!  Intake in the back? OK the further back the more vertical room. I can figure out how to duct cold air back there or maybe just take it from the high pressure area in front of the windshield?  Superchargers really don't have a top or bottom. Rotate  180 degrees or whatever,  long snout ?  Might actually be workable. 
Thanks for the idea.

do you have a picture with some sizes listed?   Only problem I can see is how many are sitting in junkyards someplace?  I honestly haven't even heard of them but I'm so new into this Eaton stuffer idea I don't know how much I don't know. 

In reply to frenchyd :

Victory library.com has a bunch of info on Eaton superchargers including a list of which cars have which superchargers (including different generations of the same model supercharger) as well as a bunch of pictures showing the inlet and outlet configuration for many of them. Unfortunately, they don't have exterior dimensions, but it might help you zero in on a model that has the configuration you're looking for.

In reply to frenchyd :

I don't have any measurements for you, but here's one hotlinked pic of an early (89-93) SC/XR7 blower setup:

You can see how air comes in through the TB, then comes out through the top. There are lots more pictures out there if you google "Supercoupe M90" or similar, and if you want specific pics, sccoa.com is a great resource.

That said, I've only ever seen one SC in a junkyard compared to a ton of Grand Prix GTPs, etc. And an SC top end swap is relatively popular among the Mustang V6 crowd, so the parts tend not to last long. 94-95 blowers will be gone very quickly.

captdownshift (Forum Supporter) said:

You want a pair of lysolms from a Mazda millennia with the SU carbs in front, for noises...

This miught actauly be the tickett as they are long and skinny things and they make LOTS of boost for thre size.  I think if the valves timing on the 2.23l motor that they were bolted to was in an autocycle format I read that it would make somthing between 18-23lbs of boost.  So two of them on a 5.3 would be way more than you need.  

If anyone ahs the pulley size and the displacement of the ones on the mellenia I can run the numbers.

Actually google answered it as a 4" pully  

A lystrom is a 1.2l unit but not sure that it is the one on the Millennia.  Find that out and you are golden

The size of the unit is supposed to be 20″ long, 6″ wide, 5″ tall so that may be the ticket for Frenchy

This has a ton of info

http://www.roadkill.com/supercharge-everything-cheap-blower-shopping-local-u-wrench/

So some quick math via one of my spread sheets: The above was for a 2.65L  I used an 8 inch crank pulley but the math scales for two units on a 5.3 and you would be interested in the air speed in the separate pipes so best to do it this way.  As you can see with 100 percent VE you should be at around 12.5lbs of boost so you could reasonably expect to see 8-9 maybe?  Also the max rpm at 6500 looks very good but I don't know the max that these units can spin to safely.

This is based on the smallest lysolm units the 1.2l they make bigger ones and considering that the unit we are looking at was from a miller cycle motor I would have to do a compression calculation to see if this is realistic.  I suspect that they may have used a bigger one as they are compression against the piston as it starts to travel back up the cylinder.  

The reason for all the air speed and pipe diameters is I was looking at the Critical Reynolds Number. It is the speed when air/fluid flow goes from laminar to turbulent in the pipes.  

I have gone way to far down the rabbit hole with supperchargers LOL

frenchyd said:

 

There is a point where things become art.  I think this has achieved that.  

In reply to dean1484 :

You are absolutely awesome.  thanks buddy. 

In reply to dean1484 :

I love being able to crunch numbers and etc. but bottom line? Some is better than nothing. If it's' even  close I'll make it work and look cool( hopefully weird too ) a big Old SU carb or two at the start  of one of these  should fry a few minds.  
The prices make it realistic. Even for a school bus driver to play with.  
Polishing them is just time and effort but smiles and appreciation make it worth while 

In reply to dean1484 :

In dyno pulls and drag racing you can get away with over reving for a brief moment. Road racing you are pushing air all down that mile Plus long straight trying to squeak ahead  to position yourself for the pass. You're not at peak RPM for a second or even a fraction of a second. Instead  it's 20-30 maybe more seconds. And that strain is repeated 2/3 even more times per lap. 
    Wheel to wheel has been my lifelong hobby. As a person of modest means I need to load the car back onto the trailer in good shape or my racing is done for the season maybe longer.  So I am forced to swallow my ego and focus on long term goals.  To finish first first I must finish.  While wealth may afford that momentary flash of glory the discipline to keep the momentary power advantage in check until the moment is right is nearly impossible without the tough lessons learned in disappointment. 
So chasing elusive big numbers  while ego satisfying    Is the height of foolishness.  
Less than optimum boost?  I'd also the ability to reload the car finishing as well as possible but  returning again.  

dean1484 said:

This has a ton of info

http://www.roadkill.com/supercharge-everything-cheap-blower-shopping-local-u-wrench/

 

 

Great help and exactly the sort of data I  was looking for. 
I went out and as carefully as possible  measured  and yes a pair of 90's will fit. I think I'll even be able to keep my power steering pump and have room for a small alternator. 
 

Then I crunched the numbers and even under driving the blowers a bit I might get 9-10 Pounds.  More than that Now that is pure speculation based on my best estimates . But that combined with E85 &  cams reground puts me over 450 hp  limited by using a pair of SU. HD 8's that only flow  400 CFM each. 
There is room ( ( I think) for  a pair of 1& 1/2 SU's   Per blower ( total  of 4 carbs)  and they flow 250cfm each for a total of 1000 CFM   The great thing is right at the base of the windshield there is lots of room for air filters. And should be a relatively high pressure area. 
 

Throttle linkage will be tricky but not impossible.  4 bell cranks  should do it 

Will said:

03Panther said:

In reply to dean1484 :

Being a fan of the 3800 Series II engines, I'd love to do a project with a supercharged one one day, but I'm a RWD kinda guy. So your info. was very encouraging to me. I did have a bit of trouble figuring out what Mercury had a Eaton on it.... till I realized I was thinking American slang!!!

89-91 Cougar XR7. Same as the Supercoupe of the same years.

But it doesn't sound as if an SC/XR7 blower is right here. They have the intake on the back, exit on top and a relatively long snout.

Yes, the 90's T-birds and Cougars are the same car 'cept for minor differences (badging, etc.) But Dean was referring to a "Merc 230 Compressor" supercharger... Took me a while to remember I was on a site that likes them furrin" cars. He was referring to a Mercedes Benz. I was makin' a funny about Merc being slang to us ol' jalopy jockeys!