Mini roots supercharger build 2004 RX8 $600-
 

2004 RX8
90k miles
Gutted Cat, RS Catback (Ebay)
LS1 Coil Kit

Supercharger build. Its all welded and mounted. Just not piped yet.

https://cimg8.ibsrv.net/gimg/www.rx8...d52b2a1f4c.jpg


Install


https://cimg0.ibsrv.net/gimg/www.rx8...f20685c102.jpg


Custom fabrication


https://cimg6.ibsrv.net/gimg/www.rx8...2da1039524.jpg


2005 STI factory boost gauge


https://cimg9.ibsrv.net/gimg/www.rx8...c1d7bfe945.jpg


https://cimg2.ibsrv.net/gimg/www.rx8...6ec5a9a609.jpg


https://cimg7.ibsrv.net/gimg/www.rx8...2293bd6e24.jpg

videos
 

Crazy. Props for posting up with it done though. Any idea on intake temps? Pics of the finished product? The belts? Engine movement? Did it actually add power overall?

Looks like it is this one, :lol:

Subaru Pleo Aisin AMR500 14408KA120 supercharger Blower | eBay

dafuq. gotta see the numbers on this bad boy

Any Updates on this?

If so then it's too small for a Renesis

SuperChargers Unlimited Aisin Specifications

Nice look forward to seeing some numbers.

I was hoping that Hymee was going to set up his system the same way and get rid of the complictaed layshaft. However, he wanted it to look good so he stuck with his original idea.

Considering the Renesis airflow demand coupled with a 16,000 SC input shaft rpm limit he'll be lucky if it makes 3 psig IMO ...

Wait, you mounted it to the chassis rather than the the engine? :facepalm:


.

I was like .....WTF !!!!? when I saw that .

Accordion tube FTW! :)

Hopefully it has an accordion drive belt too ...

I thought that's why they're ribbed, not just for her pleasure? :dunno:

Meh, just power it with an electric motor and convoluted power system and problem solved.

https://cimg2.ibsrv.net/gimg/www.rx8...775fb0acf2.jpg

If you base your size of the blower on 1.3 liters or on the HP output using numbers that apply to regular piston engines you will be way undersize.
I can't tell you how much it cost me to learn that! :anger:
If I had just been buying them I could just shrug it off but I was building from blank paper. We may not admit it out loud but these things are not thermal efficient. It takes a bunch more air in to get X out the flywheel. Oh yes, and fuel too. Did you notice the fuel?

as undersized as it is the additional fuel is not that much, lol

True, but before he notices that he'll flip the belt or wipe out the bearings in the blower. Or maybe he welded the engine to the frame as well.
We shouldn't be flaming the boy at least he's trying.
That's the way we all learn.

that blower is WAY too small, and mounting it to the frame is not a good idea. I have an Eaton/Roots M62 (from a Jackson Racing RSX Type S kit; previous car) and M90 laying around (junkyard find in excellent condition) and i dont believe either would flow enough air at worthwhile boost without basically becoming a heat pump. you probably are building a few psi of boost, but mostly pushing hot air. assuming you had a way to fab up some piping and some cash laying around you COULD go with an aftercooler, like a laminova setup, decent and decently cheap, or custom.

watch your temps and tune!

i would imagine, based on speculation re your blower in previous posts, even if you are boosting, its mostly hot air and not in its efficiency range.

not trying to flame or criticize at all, but i would check out your AFR's with a wideband, intake temps before and especially AFTER the compressor. i LOVE superchargers, but rotary exhaust velocity begs for a turbo...

Ive had 1 turbo rotary, 1 twin turbo (300zx TT), and 1 sc'd car, my folks have a TRD supercharged Tacoma. I love boost.

If a chassis mounted blower is positioned correctly on the serpentine belt, the torque reaction from the motor would be compensated for by the mount position of the SC pulley; it would take some checking of the way the engine torques over under loads to select a position for the chassis mounted SC.

I think it's do able to put a huge blower into the nose this way.

I am running a 2.1 liter twin screw, and it is NOT too big. I know of a 2.6 S/C in testing....
/A giant water cooled 4.7 liter SC mounted in the nose backwards would be sweet.

Oh yeah, you at least need methanol injection without an intercooler like the OP example in this thread.

The blower used in this thread is only 0.5L and it has a low rpm limit