Got some replies from an ex worker at Magnuson.

 

There's a guy semi-local to me selling a Ford F-150 Harley Davidson edition Eaton supercharger. It's a gen 4 M112. It has a similar looking bolt pattern to our CT MP62. I asked for measurements. If it's the same... maybe I'll say fuck it and jump the MP90 and go straight to an M112 lol

I probably won't be making enough power to drive it though.


The guy I spoke to, who used to work for Magnuson, said to use the M62 and "drive it to the moon" or fuck the M90 and go with a TVS1320. But those are god damned expensive.

The TVS uses a 4 lobe vs a 3 lobe in the M series.

 

More info from our amazing friend.


I just inquired if the casing for the snout is the same aside from Magnuson's propriety inlet/outlet ports. Which, it seems they are.

Now all we need is to grab a Gen 5 Eaton M90 or a Gen 3 Magnuson and swap the drive extension on to the new blower.

If using a Gen 3, somehow, then swap to new Gen 5 rotor packs.

 

Found this info:

Description P/N Vehicle Model Year Engine Eaton Mod # Gen
Supercharger 20-62-32-001 Bonneville, Grand Prix, GTP 91-93 3.8L V6 M62 3rd
Supercharger 20-62-33-002 Bonneville, Grand Prix, GTP 94-95 3.8L V6 M62 3rd
Supercharger 20-90-33-011 Bonneville, Grand Prix, GTP 96-97 3.8L V6 M90 3rd
Supercharger 20-90-33-012 Bonneville, Grand Prix, GTP 98-03 3.8L V6 M90 3rd
Supercharger TBD Bonneville, Grand Prix, GTP 2004 3.8L V6 M90 5th
Supercharger, S-Ported 2.5" pulley 20-62-33-051 Bonneville, Grand Prix, GTP 94-95 3.8L V6 M62 3rd
Supercharger, S-Ported 3.4" or 3.6" 20-90-33-052 Bonneville, Grand Prix, GTP 96-97 3.8L V6 M90 3rd
Supercharger, S-Ported 3.4" or 3.6" 20-90-33-053 Bonneville, Grand Prix, GTP 98-03 3.8L V6 M90 3rd
Nose Cover, Standard Nose 2.53" 25-62-31-001 Bonneville, Grand Prix, GTP 91-93 3.8L V6 M62 3rd
Nose Cover, Standard Nose 2.8" 25-62-31-002 Bonneville, Grand Prix, GTP 94-95 3.8L V6 M62 3rd
Nose Cover, Standard Nose 4.00" 25-90-32-003 Bonneville, Grand Prix, GTP 96-03 3.8L V6 M90 3rd
Nose Cover, Perf Pulleys 3.4" 25-90-32-011 Bonneville, Grand Prix, GTP 96-03 3.8L V6 M90 3rd
Nose Cover, Perf Pulleys 3.6" 25-90-32-012 Bonneville, Grand Prix, GTP 96-03 3.8L V6 M90 3rd
Nose Cover, Perf Pulleys 3.4" TBD Bonneville, Grand Prix, GTP 2004 3.8L V6 M90 5th
Nose Cover, Perf Pulleys 3.6" TBD Bonneville, Grand Prix, GTP 2004 3.8L V6 M90 5th

 

Found this on a Lotus forum of some dude hacking up an M62 to his vehicle.


I've read on other places that m45/m62 are more compatible with one another while m90/112 are more compatible versus something like m62/m90. But if it's the same width then I don't think it should be an issue.

 

Just picked this guy up.

 

^
Nice!
If my M62 was not installed on my CL-S, I would try and get some comparative measurements.

Calling Dr. @Acura TL Builder , your assistance is needed stat!

 

I have my mp62 CT at home... But I won't be back until 7-9 hours from now lol. All I can do is compare to what @Acura TL Builder already posted

 

The snout won't be a direct fit as center to center is about 2.5". TL Builder measured 2.1" on his CT. I don't have my caliper with me for a more accurate measure but this would do for now. Will have to see how much work that is since CT/Magnuson uses a 2piece snout while Eaton is a 1 piece. Which means next step is to try to shove the drive extension onto the gen 5.

 

Just finished maintainence on the 6MT Sport about to do the first long drive to begin breaking in the clutch.

Dang, the snout wont fit! Is there a way we can still make it work? If all else fails you can get the Pranks M90 Gen 5 adaptor kit and slap it up top!

 

The easiest way I can think of, if they still make it, is to order a Magnuson 3gen cover plate for the snout. Then we transfer the drive extension over.

Or...

Modify the existing snout to accommodate the drive extension from the CT. Or or... I fabricate an adapter to fit the CT snout.

Several possibilities. Just depends on how much time and more money I want to invest.



The 4th gen m112 Ford looks super compact. I'm hoping that guy has good news for me lol

 

Took a break from working and went to do a bit of research.

It's nearly impossible to find a Gen 3 Magnuson nose cone/drive cover/snout online. Just as it is nearly impossible to find a gen 3 Magnuson MP90. I'm about to email Magnuson to see if they have any contacts for the nose cone.

The only one I can find is this... by some Australian company.
https://www.aussiespeedshop.com/prod...ger-gear-case/

And the Comptech may not even bolt up to it. Although it would then make it easier to adapt.

The best thing for me to do is to tear apart the Eaton M90 and compare it with the CT M62.

 

when you ask for bolt measurements but they send you this instead

This is an m112 from a ford 150. The intake is on top. Compact body. Would be much more friendly to work on than the Eaton m90

 

Messaged Magnuson. They don't have gen 3 nose cone/snout/drive covers.

Waiting on a reply from superchargers online who is a verified rebuilder for Magnuson and other companies.

 

Supercharges online is close to my work. Lmk if I can help

 

@RaptorTL ask them that question in person, if you could.

 

If possible would you be able to see if they have any 3rd (maybe 4th) gen Magnuson nose cone/drive cover/snout available? We need just the cover---extension and drive shaft not needed. It has to be for the MP90.

They replied to my emails and they're trying to help me out but he thinks the Magnuson is a 4th gen and he thinks Karanx7's blower is the MP62. Now he's asking for serial numbers for quick verification which I do not have.

 

Interesting.
I wonder what gives them that impression?
I only say that because the yellow arrow clearly shows the increased size 'simple sandwich adapter' used to bolt the smaller M62 CT-E inlet manifold flange, red arrow, to the larger M90 inlet rotor case.
I just looked at mine and it, the M62 S/C'er rotor case, is clearly smaller then Karanx7's illustrated below.

 

Here's a couple M62 pics from the automatic trans. CL-S kit I sold in Oct 2020.
the inlet mating surfaces are even.

 

Theres also a 3rd bolt on the rear side of Karanx7's MP90, and only two on the MP62.

That rookie reminds me of the Vatozone employee asing if your car is a 6MT or 5AT when buying windshield wipers.

Why are these 3rd gen MP90s so hard to find used?

 

https://www.ebay.com/itm/40288047037...4AAOSwcddfRp~M

Here is a 4 gen MP90. By sight measurements alone Komodo's MP62 and that MP90 gen 4, looks like the top middle bolts will line up, but look at the two top lateral bolts. the extra width of the MP90 would not fit our MP62 drive shaft assemblies.

 

All we need is a drive cover and we would be able to convert the MP90.

https://www.ebay.com/itm/12471953440...kAAOSwrRpgqWXQ

2007-2011 Jeep Wrangler Avengers had MP90s?

 

​​​​​
Yeah I honestly have no idea why they would think that. I guess they work with so many superchargers that they got it mixed up?

The ex employee I spoke to on Facebook identified it instantly and even told me what modification jproy did by that one picture alone.



good eye!

I gave him all the info he needed too. At least I'm sure I did.

me: "I'm looking for a 3rd Generation Magnuson (eaton) MP90 nose cone/snout/drive cover."
them: "What supercharger do you have? We don't have any m90 3rd gen snouts"
me: "I have a Comptech supercharger which was made by Magnuson. It's a gen 3 Magnuson which is apparently based off of a gen 4/5 Eaton"
them: "can you send me a picture, from what I know the CT chargers were all 4th gen. Can you send a pic to confirm?"
me: *sends stock CT, sends karanx7's modified pic, sends gen 5 Eaton m90, sends gen 4 ford eaton m112*
them: "that's a 4th gen m62. so you need a new snout?"
me: "it's actually an m90 core/casing/rotor pack with the CT extended drive shaft and an adapter on the inlet. I'm just trying to find the 2 piece Magnuson nose cone/drive cover. The drive extension isn't needed"
them: "is there a serial number on the rotor pack?"

I haven't replied yet lol

That's interesting and a good find.

On Magnuson the 4th gens they have show the TVS style (3 bolts on top vs 4) but some of the Toyota ones have this style you posted.

That's definitely not a stock kit. Looks close to it though. The inlet port is 100% a Magnuson design.

 

If we can't find a drive cover I might try to get one fabricated. We just need the one half since the drive extension bolts on to it.

 

I fished out my CT MP62 pic before I ported it. It is indeed an MP62 Gen 4.

 

But we'll have to see if the 4th gen MP90 has the same fit.

And damn, are those new rotor packs? looks fresh

 

Nah, they are used

 

Was excited to read thru this thread, but then it went silent?

 

If you compare Chito Simmons Comptech M90 that he may never install, yet won’t sell, You will notice it’s exactly like my M90.

This means I can take my NIB Comptech snout and use the new Weldprime TIG welder to make a Comptech M90 without modifying my MP62 Comptech.

 

Looks like you got the Ford M90.

The dude with the Ford M112 local to me still hasn't replied. I'd still prefer that unit as the rear is easier to work with than the Pontiac.


The Ford M90 is also the one that Paul from V6P modified and created his own shaft and inlet adapter.

 

Chito Simmons has had one of those guys’ M90s for years. Has yet to install it.

 

Comptech MP62 cooler just came in from MercRacing! ZZP makes a better design, but they only make it for the Eaton M90. This cooler has no seal around the radiator and aluminum plate, so some of the charge will leak past the 1/4” gap, meaning less cooling affect. Perhaps I can use some sort of sealant to close the gap?

 

^
If you can sandwich an appropriately think (oversized) 'o-ring' type of material to fit within that machined grove, maybe that will help with any air pressure exudate?

 

These are cool. Works especially well for the top mounted M90 guys.

As for the gap between the rad and plate I've seen GM guys fill the gap with high temp silicone or gasket maker. But they usually dismantled it and filled the gap in it's entirely (which essentially seals the radiator to the plate as well).

As for a cleaner and more serviceable method---if you could dismantle the plate then you could always look into rubber mats/sheets and cut it to size. Then create a bead around the edges with gasket maker to ensure the seal.

So, something like this: https://www.princessauto.com/en/4-x-...t/PA0008634354

Sandwich that between the rad and plate and seal edges with gasket maker.

 

that cooler looks pretty slick.

Has anyone tried running one of the CT inlet adaptors with a J37/ZDX TB?

https://mercracing.net/shop/ct-engin...modular-inlet/

https://www.facebook.com/media/set/?...1&l=cea28848c0

 

must've read this thread at least 3 times as well as the old threads linked toward the top. The collective knowledge from pioneers of the j series past seems to have been lost or at least hidden.
Anyone confirm a solution? m90/mp90 g5 w/ g4 drive cover plate, and some type of inlet adapter?

 

I just sold my share in my garage so now I have a lot of free time. I'm going to be restoring my TL first and will finally be dismantling both m90 Gen 5 Eaton and the Comptech to compare.

We really only need a way to transfer the long-snout over to the M90. That would either be by directly swapping the snout or creating an adapter plate for the CT to bolt on to the M90. Oh yeah... and probably chopping off the intake portion of the M90 since it might interfere with fitment (which other people have done). Then also cutting off the original tabs on the M90 and then fabricating a new exhaust port (or adapter plate). I want to run it to an intercooler so I'll probably opt for for a new exhaust port.

 

Bump to this.

Finally bothered comparing the CT to the M90. The difference in sizing isn't too bad BUT the M90 is overall longer... and the inlet points outward. This causes an issue here.

You'd need to cut the inlet off and fabricate an elbow (just like the CT). I deemed it not worth pursuing with the Gen5 M90 and gave up on that.

The Ford M90 is favorable as the inlet is top side. The Ford M90 that TL Builder posted is also favorable as it's a smaller M90. And there are even some M112s that are not too much larger that have the inlet above (not on top) as well. The M112 would be more favorable as the M112 is way more suitable for these motors.

I also found a Jaguar M112 that may be favorable in size and inlet direction.