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Really, really bad forced induction idea...


deathbypsi

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Had no idea you were going to the TRS trail ride too, cant wait to wheel with ya!
 


PetroleumJunkie412

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So I'm at a critical decision point...

I have an Eaton M90, M62, and M45 superchargers all on hand at the present moment.

Need to decide which to proceed with, the M90 or M62.

The advantage of the M62 is I have all parts - intercooler, plumbing, etc. It's a modular design as well.

The advantage of the m90 is 28 cubic inches per rev.

Need some input on this one fellas!
 

Ranger850

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id go with m62 until all the parts for the m90 could be gathered. by then you'll know of the motor is gonna ?
 

PetroleumJunkie412

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id go with m62 until all the parts for the m90 could be gathered. by then you'll know of the motor is gonna ?
Other drawback of the M90, I'd have to fabricate most of the things. Good part is that I have access to a six axis CNC with 3D scanner, so it comes down to sizing. Not sure which is the better size.
 

Ranger850

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i have no idea what you're talking about, honestley. i know 0% about how the parts you're talking about. i just have a basic understanding of how forced induction works. if the block can take it, I'd give it the strongest booster. you never mentioned putting the m45 on, why is that?
 

PetroleumJunkie412

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i have no idea what you're talking about, honestley. i know 0% about how the parts you're talking about. i just have a basic understanding of how forced induction works. if the block can take it, I'd give it the strongest booster. you never mentioned putting the m45 on, why is that?
Some of the Eaton superchargers (the M series) list their displacement in cubic inches per revolution. So, an M45 displaces 45 ci per revolution, a M62 at 62 ci, etc.

The easiest to obtain is the M90. It came as an option on most of the mid 90s to mid 2000s GM 3.8 equipped cars. Ford used them as well on some thunderchickens. The rarer ones are the M62 (Benz), the M112 (some late 3.8s), and the M45 (mini Cooper S, and a few others).

The M45 would have to be overdriven to the point of redline to produce enough cfms of air flow to work (AFAIK), and the m90 should work, but the margin of error is SLIM using it. Just a touch too much overdrive, and I'll probably push a head through my hood, or a rod through the block. Again, AFAIK.

Was hoping to get an expert to chime in, haha. Either is an option thanks to machineing options laying around. Just trying to double check my math, haha.
 

PetroleumJunkie412

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Can't remember if I posted this before, but a side by side comparison of my options. Salvaged these in one (very lucrative) day.

From left to right: M45 from a Mini Cooper S, M62 from a C230, M90 gen. 3 from a Buick Riviera, and M90 gen. 5 from a Pontiac Grand Prix GTP

Other thing to note is the M45 and M62 discharge from the top, and M90s discharge from the bottom

_20190616_110741.JPG
 

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Being that you have a complete system with the M62... I would proceed with that. Reason... proof of concept. Probably more forgiving then the larger unit while you develop a working tune with all the new toys you've pieced together. If it will handle the M62 and it's worth going further go bigger... with all the knowledge you've gained.
 

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Haha. See vid below for a Lightning with twin superchargers. It's a four part vid, the other three on on the right side bar. Guys out here in Oklahoma, I've seen and heard it personally. Awesome doesn't describe it.

 

cbxer55

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From what I've read, they are a two lobe roots style, so when switched off, it doesn't seem to impede flow.

They were used in the Previa minivan on a Mad Max style controller. Guess it was for when you were late to soccer and needed to become the Road Warrior. [emoji23]

Sent from my H8314 using Tapatalk
On the Lightning, which uses an Eaton M112 blower, if you pull off the supercharger belt, which is separate from the accessory drive, the truck will run and drive fine. What's funny is even idling, you can see the blower is turning without the belt by watching the upper pulley go round-and-round. It's a gutless slug, but you can drive it. For as long as you desire. Therefore, a clutch system might work.

You want everyone to know you have a blower, run cogs on it. The last two are my current set up with a Magnum Powers three idler pulley bridge. That tighter wrap around the upper pulley, made them so loud! They're a love or hate thing. Gt a lot of thumbs up, and a few windows rolled up! LOL The belt tensioner is a custom made manually adjustable model, no springs. Screw and locknut.
 

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cbxer55

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Back when Pontiac made that boost V-6, and I believe it was Oldsmobile as well, they used an Eaton M90. I believe those V-5's were over 3000, want to say 3.6 liter.

Putting a Magnum Powers blower on my Lightning next month. After that, I'll have an Eaton M112 taking up garage space. ;-)
 
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snoranger

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I think the M45 would be a little small for the 2.9l. The M62 or the M90 would be better, depending on how much boost you want to see.
 

Ranger850

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when did i say " KIA4LIFE " :icon_confused:
 

PetroleumJunkie412

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Today, I noticed someone gave me inspiration to finish this build.

Screenshot_20190616-225031.png





Well. Looks like I know who's yard I'm doing doughnuts in first.


"HUNGRY!? WELL GET OUT THE SPRINKLES CAUSE I BROUGHT THESE" (proceeds to turf some Merkur owners Kentucky blue grass and fescue 26 blend)
 
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PetroleumJunkie412

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Project is still chugging. Sorting out a lot of BS with the Merkur intake. Thanks to some die hard Merkur guys though, I may have rhe throttle linkage I'm missing.

After that, it's the power steering pump, then the blower or T28 turbo I have in the basement. Not sure which so far. Both have install advantages and disadvantages.
 

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