Well I was searching around to see if anyone actually put an m90 on their cars yet but came up emptyhanded. Maybe I just missed it. I know I'll have to get some plates made up, but it would help if I had some dimensions. One for the tb, and one to bolt it to the lower manifold. Also the right snout length would be great. And last but not least is I want to move about the same amount of air as I'm moving with my stage 2. Anyone know what psi I would be shooting for with that? I have a stock gtp pulley laying around (3.8"). I'm just looking to get something similar to my setup right now so I don't have to go crazy with the tuning yet so this is just a piece of the "future build" I'm working on. So lets see if any progress was made on this before I ditch the supercharger totally and just go turbo. TIA

 

When you figure out how much money it will be to have the parts needed to fit the M90 on there you'll probably want to go turbo anyways.

 

That was kind of the purpose of this thread I guess. I'm definitly a turbo fan at heart, but thought I would give the roots a try. But if the price was more then 1k then I would definitly scrap that idea.

 

I've already done the math on it, you won't gain much from doing it. At idle the HP drain is pretty large, and it kills your low end pretty bad.

 

I found some charts but they were hard to read on cfm vs psi. What were your findings? It's got almost 30cid on the m62, so it has to flow more, just want to know the actual #'s. I'm not worried about low end though, our cars are already a handful especially the non g85 like mine

 

i have a few m90s laying around here if anyone wants to start a project

 

For the amount of power draw, the extra flow doesn't seem to make up for it....

M62 Flow

M62 Power Draw


M90 Flow

M90 Power Draw

 

Thanks for the charts! Do you happen to know at what rpm the supercharger is spinning as to what psi it is making? I know it can't be exact as things like exhaust will come into play, but just an average. I see that it says 5 and 10 psi, but is that across the rpm board? What I'm interested in is an m62 making more then 15psi and seeing if the m90 will be better off if. Considering 17+psi with the 62 the 90 will move a little more air with less boost and less heat. I'm pretty sure I'm going to steer away from this now, it's just interesting

 

m90 blowers are not efficient anyways... they seem to lose steam after 13-14psi

 

not worth it.

 

I know they aren't efficient as I owned a gtp. Just sucks that I thought I could rig something up to be better than our stock one. Oh well, building a turbo kit is easy too.

 

http://www.eatonperformance.com/superchargers/M90.html