Bliks Supa Chaga Build

[TheBlik]

bump. so, im really not sure at this point on what to do. m90 is 3.25 in longer than the m45. so no room at all, where i had it mounted and if i did it denny's way, where it is on the alternator side, i may be able to fit it. or i could get an m62 with the electric clutch, and maybe still have the same out come as the m45, which would be a waste of time. I DID RESEARCH DENNY!!! woah weird. Plus the m62 is for a 3.0 to 5.0 liter motor so if it did work i might be putting out some real good boost. anyways should i keep wasting my time on this or turbo?

[TheBlik]

erggg, why dont i just get an m90 ;)

[kamotors]

wait maybe i should cut off the pulley from the blower and weld on a bigger one! yeah thanks Kamotors!

... but you need a smaller blower pulley I thought?

[TheBlik]

wait maybe i should cut off the pulley from the blower and weld on a bigger one! yeah thanks Kamotors!

[kamotors]

maybe contact these guys? maybe you could get a smaller pulley weld-on/press fit for the charger

http://www.pulleyboys.com/store/home.php?cat=9

[TheBlik]

would anyone know a CNC guy that can do 3D? The guy i know can only 2D junk. and really i just need the pulley and i will be boosted :) Maybe ill pull out the DIRTY-E30 today get some pics and a video of what it sounds like.

[TheBlik]

Hahahaha well really, i dont give a hoot, i know i messed up big time. That's reality, he did it his way and im doing it my way. Everyone has their choices. Anyways i have my surgery coming up so i cant really be spending money, and after that i have four to six weeks of recovery and physical therapy, so ill have a lot of time to research and make corrections. probably thinking of getting a 8'' or a 12" pulley make as much boost as possible but its still in the air, i do not want to give up on this build, i want to twin charge so here is step one.

[e30leigh]

i think you should be talking to that denny dude. i dont know much about superchargers. i know how they function. but i dont know what they need to function correctly.

ie i had no idea the TB needs to be before the charger.... id be pm'ing him dude.
he seems in the know. even if he had a bit of a rant there

[kamotors]

I think i should go big or go home with a 12'' pulley :)

do it

[TheBlik]

I think i should go big or go home with a 12'' pulley :)

[kamotors]

Really? I'm getting 5.6 psi before subtracting the overlap allowance.


Boost (psi) = (PR x 14.7 x V / C/2 ) - 14.7 - I

PR = 4.75 in / 2.795 in = 1.699

V = 62 in^3 (Eaton M62)

C/2 = 2.5L/2 = 1250 cc = 76.27 in^3

Boost = (1.699 x 14.7 x 62 / 76.27) - 14.7 = ~5.6 psi


This seems more in the ballpark just because the stock crank pulley is probably close (possibly a little smaller, but not drastically) to the original diameter of what drove the charger in it's original application.

hes running an eaton m45 not m62 like the thread shows, but my math is still probably off. and I also seemed to of forgotten to convert cc to in^3


but i'm still getting extremely low boost like less than 1 psi.

so that's good news in a way you only need about an 8" pulley on the crank to get about 10psi

[Denny]

So i need a new pulley regardless. Also i didn't do research i'm retarded, the blower came out of a Benz c230, and apparently those are 1.8 liters so the small pulley works. Also their crank pulley is 7 and something inches so they can get 12 psi stock. So since I have more displacement therefore i need larger pulley, like 10-12in. to even get some boost to over come valve junk and the 30hp the blower is stealing away. What i figured, and i assumed, it always gets you in trouble, that its like a motor cycle chain and sprockets, the bigger crank pulley gives you more speed and then the small rear would give you more speed. But now math is involved :( hahaha. So any suggestions on what the dimensions are on an 12in crank pulley or how i could get those measurements?

Damn dude! all the info is out there ...you dont take the time to read, plan and thats why you end up with this epic fail! I even posted on your thread and was completly ignored. read my blog...read the supercharged! book by corky bell....do you damn research.... why do people think adding roots type charger on a M20 is a piece of cake!!?? Its a LOT more work then adding a turbo if you do it right.

One more thing for it to be done right the throttle body needs to be located before the charger...(ask me how I know) of course dont listen to me what do I know about Supercharging the M20..how are you going to do that now?!? now that u located the roots charger under the exhaust which is just rediculous for a lot of reasons how are you going to relocate the throttle body? Why do you think you need a 3.5MAF? why cut the throttle wire? why use weak ass small gauge metal for mounts or sc output? I could go on and on...

[TheBlik]

So i need a new pulley regardless. Also i didn't do research i'm retarded, the blower came out of a Benz c230, and apparently those are 1.8 liters so the small pulley works. Also their crank pulley is 7 and something inches so they can get 12 psi stock. So since I have more displacement therefore i need larger pulley, like 10-12in. to even get some boost to over come valve junk and the 30hp the blower is stealing away. What i figured, and i assumed, it always gets you in trouble, that its like a motor cycle chain and sprockets, the bigger crank pulley gives you more speed and then the small rear would give you more speed. But now math is involved :( hahaha. So any suggestions on what the dimensions are on an 12in crank pulley or how i could get those measurements?

[tinkwithanr]

uh oh.....calculations say your only getting 1.007psi:( that would explain a lot.

Really? I'm getting 5.6 psi before subtracting the overlap allowance.


Boost (psi) = (PR x 14.7 x V / C/2 ) - 14.7 - I

PR = 4.75 in / 2.795 in = 1.699

V = 62 in^3 (Eaton M62)

C/2 = 2.5L/2 = 1250 cc = 76.27 in^3

Boost = (1.699 x 14.7 x 62 / 76.27) - 14.7 = ~5.6 psi


This seems more in the ballpark just because the stock crank pulley is probably close (possibly a little smaller, but not drastically) to the original diameter of what drove the charger in it's original application.

[e30leigh]

can you have the blower pullie machined off or down and a new one welded on? or you could get a custom crank pullie? get it in alloy to counter the added rotation with less weight