Skuce

Yes. I did read the entire thread. Maybe you should too. This answer infers that he's assuming that all SC's come with a clutched pulley.

Bone1

hey drunk, skuce and me know whats going on.........really simple.........

I even posted pics in a different post..........

Eaton M63 if it matters to you.

Skuce

In all honesty. it is nice having the switch to turn the S/C on and off and go back to N/A.

Just some things to be aware of.

-N/A with the S/C just sitting there slightly freewheeling is a LOT less power than if you were stock N/A
-The engine doesn't like the S/C being turned off while the engine is running. It jerks and hesitates (stalls the very odd time if rev's are low) because there is all of a sudden a very big block in the air passage that wasn't there a second earlier...and the ECU can't compensate that fast. It goes to N/A mode about 2 seconds afterwards.
-ECU doesn't like switching. It adapts to Boosted. Then when you switch to N/A it tries to relearn everything. Then when you go back to Boost, all the N/A values are rewritten again. Stock computer really doesn't like the change.
*My car is MAF'd so i don't know how a MAP'd car will react in this.
-Standalone is the best way to go if you are going to be switching it on and off all the time.

Mind you, running N/A then hitting the switch is a lot like nitrous. Instant power! and you can do it over and over again and never fill up a dumb bottle

Bone1

simple part I'm gonna tell you about, Benz bypass valve, we took over the Intel processor with Radio Shack parts.

drunkinmaster1

my appologies for being a dick. i was thinking more of a centrifugal supercharger than a roots style.

con

my ford lightning had a bypass valve that opened up when you wern't on the throttle so the sc just turned with very very little load. I do believe this is what Mista is talking about, I also believe he has used these superchargers before and is very knowlagable on this subject although I have never seen one mounted up on a engine before. +HINT HINT+

Bone1

Ford uses the Eaton's with built in bypass to the blower casing......

My plate which requires a custom header, only thing holding me back right now, working with SMSP on the issue.......



The original design that cleared the stock manifold (like the one that sold on ebay!) but due to being mounted out so far it breaks the mounting bolts......

reddevil

Hello Nooblets......


Two well known superchargers come with an electric clutch.

The Eaton M62 from the Mercedes Kompressor series and a Toyota Corrola (?) AZG??!?!?. I don't know the Toyota info cause I havent owned one, but have seen it in person as a STOCK JDM setup.

Back to the M62.

It moves .75 liter of air per revolution.

You need to have a LARGE crank pulley to get serious PSI on a motor 2.2 and larger. I am using a 7.25" crank pulley to its 3.625" pulley for a 2-1 ratio and getting only 8-10 psi with no intercooler.

When switched off, it idles PERFECTLY. The rotors simply freewheel. I still have plenty of fun with it off compared to when the SC wasnt installed at all.

I have hooked up a vacumn switch that turns the SC on when I get near 0 vacumn, ie on the gas.

I went from 100 whp ? torque to 155 whp 175 torque.



Here is a thread with pics

https://www.homemadeturbo.com/forum/...?topic=52953.0

Bone1

with the current Honda D series setup, we are only seeing 7-8 psi at 11-11.5K blower shaft rpm intercooled, yeah need a 2:1 drive ratio but the large clutch pulley prevents it.

reddevil

Can Hondas have custom LARGE crank pullies made? Or do you have to depend upon some sort of dampener pulley? Subarus don't "need" a dampender crank pulley, so I just had a huge *** pulley milled for me.

My plan is to either go to a 2.5-1 ratio (which means a HUGE 9.25ish crank pulley), or a twin supercharger setup for 18-20 psi with front mount IC. Yeah I know turbo would be easier at that point, but it will be cool!