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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?
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.
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!
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?
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 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!
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?
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.
05-13-2015 | 09:00 PM
