Supercharging an E30 M20/B25 or M20/B27

[Z3Jonathan]

Eaton Roots type blowers are found on all types of GM 3.8 (3800 Series) V-6s. Also found on 1st gen Mercedes SLK230 Kompressors, blown Jaguar V-8s, Mini Cooper S, etc.

Isn't adapting a roots-type blower going to be a PITA? Usually the intake manifold is designed to have the blower mounted to it.

[rs4pro3]

probally, did the pre 90 models have the supercharger also? this junkyard only wants $40 for one so why not.

[modifiede30]

I believe the year was in the mid 90's. The Toyota MR2 also had a similar supercharger that has a smaller capacity. This may work better. I also found a company called Wynjammer that makes a new type of supercharger that requires no additional oil lines, or an intercooler. It mounts up with only the pully and in/out pipes. This would be ideal but its way over my budget. I'm still doing some research to find an engine with similar displacement that ran a supercharger. I'll let you know what I find.

[diegom6]

Eaton Roots type blowers are found on all types of GM 3.8 (3800 Series) V-6s. Also found on 1st gen Mercedes SLK230 Kompressors, blown Jaguar V-8s, Mini Cooper S, etc.

Isn't adapting a roots-type blower going to be a PITA? Usually the intake manifold is designed to have the blower mounted to it.

I have a Eaton M90, came from a Grand Prix Trans AM I think,paid $100 at Ebay, I was hoping use it in my Jeep Stroker To supercharge it, I tried to do it , but thinking first the way to attach it, couldn't get a clear idea how to do it and finsihed gaving up so I have this piece storage now...






and I wanted to do something like this , but the saw that my Eaton in the rear was different and all the way was longer that this Eaton...





Now I have this tru Powerdyne S/C that will bolt in my Stroker Jeep and will Intercool it also... :twisted: It came apparently from a Ford F150 or kind of

[Jonathan M3]

what year of those GM cars have the superchargers? I just cheked my favorite junkyard's inventroy and they listed a couple of each of those cars in stock, maybe I'll have to go make a run to see if i can find a supercharger or two if Dan wants one.

They were found in those cars '96-present.

It would take some kind of custom intake manifold to properly mount one though, or possibly another way maybe?

[rs4pro3]

ok this junkyard only has pre 90 cars ussualy. A supercharger like the last picture Diegom6 posted would be perfect.

[Z3Jonathan]

I have a Eaton M90, came from a Grand Prix Trans AM I think,paid $100 at Ebay, I was hoping use it in my Jeep Stroker To supercharge it, I tried to do it , but thinking first the way to attach it, couldn't get a clear idea how to do it and finsihed gaving up so I have this piece storage now...

and I wanted to do something like this , but the saw that my Eaton in the rear was different and all the way was longer that this Eaton...

Now I have this tru Powerdyne S/C that will bolt in my Stroker Jeep and will Intercool it also... :twisted: It came apparently from a Ford F150 or kind of

Attaching is usually the hard part... especially with a roots blower. You need to be able to reach the intake manifold, and also run a belt over the front snout to drive it. Conflicting problems. The output also usually isn't easy to mount to on a roots blower... not a nice round outliek like a centrifugal s/c or a turbo... but usually some big ugly hole that is supposed to be mounted onto an intake manifold.

I also found a company called Wynjammer that makes a new type of supercharger that requires no additional oil lines, or an intercooler.

An intercooler is rarely "required" with a supercharger or turbo... but often a good idea. Engine detonation is less likely, and if your car sees a lot of hard driving/track time, heat soak will hopefully be less of an issue.

[modifiede30]

Ely, if you come across any VW Corrado's, they have the turbo style superchargers. If the junk yard you mentioned has any, let me know how much they'd run.

[Z3Jonathan]

Ely, if you come across any VW Corrado's, they have the turbo style superchargers. If the junk yard you mentioned has any, let me know how much they'd run.

Forget about the VW Corrado's G-Ladder... they require rebuilds every 60k miles, and tend to fail in a dramatic fashion. G60 enthusiasts certainly enjoy their powerplants, but I think there are other SC options out there.

If someone is serious about supercharging an M20, why not look into a centrifugal supercharger (ie, Vortec or Powerdyne type units)?

Jonathan

[modifiede30]

Serious but not willing to dump a butt load of money into it. I'd prefer to find something used, that can be found with ease in a junk yard.

[Z3Jonathan]

Serious but not willing to dump a butt load of money into it. I'd prefer to find something used, that can be found with ease in a junk yard.

That is usually a moot point, since as we have already previously discussed, a roots blower is often difficult to adapt to a standard intake manifold (ie, one that was never designed to have a supercharger mounted to it), and to do it "right" a junkyard unit should be rebuilt.

Dunno that a scroll s/c would be any easier, or any better. They require more frequent rebuilds as I already stated, and if you bought one from a junk yard, you'd most certainly want to rebuild it. They probably aren't as cheap to rebuild as something like an eaton blower.

There is more to look at than just the initial cost of the supercharger. Need to know what you are implementing and how you hope to implement before doing so.

Jonathan

[modifiede30]

Planning is everything. Wouldn't just throw the thing in without making sure it would work, and last. Part of the fun of the project is finding something that will work, designing the brackets/manifolds to make it fit, and testing it. Once all that's done, and it works, I'd rebuild it and make sure its sound.

[rs4pro3]

Just checked the online inverntory no Corrodo's in stock. If you find any more cars with chargers that would work let me know, only problem is this yard rarley gets cars made in 90 or above in.
There price is $40 for any turbo so I'm guesing a supercharger would be the same they don't have it listed so.

[Z3Jonathan]

Just checked the online inverntory no Corrodo's in stock. If you find any more cars with chargers that would work let me know, only problem is this yard rarley gets cars made in 90 or above in.
There price is $40 for any turbo so I'm guesing a supercharger would be the same they don't have it listed so.

Wouldn't bother with a corrado.

Here's a good link: http://listings.ebaymotors.com/Turbo...sortpropertyZ2

and some history on the 3800 Series Supercharged engines:

http://engine.firebirdv6.com/3800history.html

Looks like '91 and up is a good place to start looking. This enigne was used every where (supercharged in many cases). Buick Regals, Pontiac Gran Prix, Pontiac Bonneville's etc...

I'm going to sound like a broken record: Eaton Roots type blowers are very common in OEM applications (Ford Lightening, F-150 Harley Davidson, Cobra, Jaguar S/C V-8s, Mercedes SLK, MINI Cooper S etc). But, trying to mate one up to your intake manifold is not going to be easy!!!!!!

A centrifugal s/c would mate up and package easier. Would sacrafice some low end torque tho.

Another good link: http://www.automotive.eaton.com/prod...rchargers.html

http://www.capa.com.au/eaton.htm

Jonathan