3400 m90 supercharger ?

[darkroom]

I searched but could not find anyone that has done this.

I'm planning on installing the m90 in place of the AC of the 3400 engine. i would remove the ac, ac lines, and ac condensor. I would also relocate the oil filter and push the radiator foward to make the charger fit in that area. The ? is will this work? i can't find any info on a roots charger that has an air to air intercooler being that this is what i'm trying to do. So air would be sucked in as follows. Air filter, mass air flow, m90 throttle, roots charger with internal bypass valve, 2 feet of 2.5" piping, FMIC, 4 feet of 2.5" piping, and to the 3400 top intake manifold that is not going to have a throttle on.
Will there be lag because of all the piping if this even works?
I used to have the charger mounted above the top intake manifold but i got tired of having to look over it.

Thanks for the info
Lee

[Doubt_Incarnate]

for some reason, they call it an after cooler in super chaging. i know they have air/water, but i cant see why air/air wont work. as for lag, i think that just pertains to turbos, since they depend onexhaust to drive them, if there isnt much exhaust, there is no drive, hence the lag. you shouldnt lag being belt driven.

[speedvisioncavalier]

your idea should work, provided you get the belt mounted up right. i have the same project going, except i have an M62 going on my quad 4. same idea putting it in the A/C location, and FMIC too. it can work.

[bszopi]

Marty (RacerX11) put an M62 in place of the alternator, and moved the alternator to the AC position. He doesn't have it running yet, but its all pretty much ready to go (from last I heard). So the idea is feasible. Its all about just how you can squeeze it into the space constraints of your bay.

[speedvisioncavalier]

i agree. space is the main limiting factor, even with a quad 4.

[darkroom]

Thanks for help. if all goes will i'll begin work on this this weekend. i've heard aftercooler before i'm not to sure why i did not think about it.

Thanks again
Lee

[RacerX11]

Doubt,
Technically, the term aftercooling applies to almost all forms of cooling with today's cars, including turbos. The 'after' refers to cooling performed after the compressor. The term intercooler refers to a cooler used between the two stages of a twin-stage setup, such as sequential turbos with a cooler between them, or a compound boost setup with a turbo feeding a supercharger, and a cooler in between. The automotive market picked up on the term intercooling, and has used it ever since (incorrectly).

Brad, it is actually an M90 from a T-Bird SC, not an M62

With a properly setup roots blower, lag will be minimal. It depends on the volume of intake piping used after the blower. With a FMIC, there will be more volume that the blower must pressurize when the throttle is applied, so keeping the pipe lengths to a minimum is key. What lag is present will still be very small compared to a turbo setup.

I removed the AC compressor, and relocated the alternator in it place. I have mounted the SC up where the alternator used to reside. This is all in an "84 X-11, so there is quite a bit of underhood space. The Sunfire is probably a lot tighter, especially back by the heater box and down front. I looked at mounting the SC low on the front of the engine, but there just wasn't enough room.

I am currently planning to run without a cooler. Until you run more than 7-8psi, it really isn't worth it. My intake piping is less than 2' from the blower outlet to the intake plenum. If I decide to run more boost and a cooler later, it will be an air/water unit so I won't need to increase the intake length.

Here are some pictures of it mocked up last year:

Marty

[darkroom]

Nice where do you plan on putting the coil pack. i wish i had as much room as your car to put my charger there looks damn nice. My 98 sunfire with the 3400 only has a few inches. so i figured i'd put the charger down low. I might just go with the idea of not using an intercooler for a while just so the lag is minimal.

[RacerX11]

I haven't decided yet. I was actually out in the garage this weekend, scratching my head, trying to figure out the best location. I am down to either the firewall right behind the SC, or the bulkhead near the overflow/washer bottles. Neiter location is perfect.

Marty

[bu01]

how wuld you get the air into the intake with the sc right there?????

[RacerX11]

The outlet of the SC faces down, and there is room between it and the valve cover for piping out the bottom of the SC, back around the engine and into the intake plenum. I have the piping about halfway done. It is a very tight fit, but will look good once it is done.

Marty

[Stevesr]

Marty,

When this car is done,will it be your Autox car? If so what class will you be in?

SteveSr

[bszopi]

Steve, are you scared of some competition or something?

BTW (as I hijack Marty's thread), how is your project going?? Any new pics?!?!

[RacerX11]

Actually, I think this was originally Lee's thread

It will be my dedicated autocrosser, but will be driven on the street some. It will run in Street Mod.

Marty

[bu01]

cant you put the SC upside doewn for better clearence and a nicer looking design(sp?) for the piping right? i guess