If you choose to tune via the MS43 tools that Daniel and others here have created (get ready, it is an extremely long thread full of vast amounts of information: http://forum.e46fanatics.com/showthread.php?t=1082287), you could possibly wire the clutch to an unused DME output and have your OEM DME control it. Another way of enabling/disabling the supercharger is to run a vacuum activated bypass valve. I've used this personally in the past and it is extremely effective.

 

Sub'd. I'm very interested!

 

Thanks for the tuning info, I have been going through that thread and may give it a shot with another used ecu. Alot of information out there. I got the supercharger and am now just waiting for delivery of some steel plates and some intake pipe to custom make the flanges. See image below for flange design, managed to trace it off the supercharger.

 

My Bosch professional jigsaw goes through 6mm mild steel, all be it slowly, without problem. Just used it. No need for plasma cutting. I think I am going to attach a bracket onto the 2 alternator bolt holes with longer bolts. If anyone thinks this is not a good idea do say. Bits and pieces are coming in and I am trying not to be wasteful.

Been looking at bypass valves too - will probably be going with part number 06A145710P. My throttle body is after the supercharger so will need it. As for the electro magnetic clutch we can cross that bridge when it comes to it.

Ps. I am on a drink driving ban so what better way to spend it than this. Build needs to be done by April 2018 when I get my licence back Also got 2 little kids to look after so progress will be slow ish.

 

Hi im also using hyde's brackets to fit the Toyota sc14 to my M52TU. What a learning curve! Its very enjoyable and i cant wait to get it all up and running. Been gathering bits and researching the hell out of what needs to be done to make it as reliable as possible. I will be cooling mine. Looking into water to air cooling ( a charge cooler) to reduce psi loss. Yes more expensive but all my research and advice from hyde himself is to cool if i can.
Wish you luck , be interesting to read if to decide to post your progress. Im also here in the uk

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Eaton M62 is way to small for 3liter engine.

 

I was thinking the exact same. Very curious. I hope someone did some rough calculations before deciding to build it.

 

Hoping thats not the case as I've seen the m62 installed on e36 328's. Thought 330 will be ok. Im not looking for big boost. Also the m90 eaton is more expensive and harder to get hold of. Still will be going ahead with this. If someone knows how to work it out and show what pulley size is needed for x amount of boost it would be helpful.

 

If you use inlet flow calculation even the m90 is small.
A small example for inlet flow calculation:
engine displacement x max rpm x 0,5 (once every 2rpm air is sucked in) x fill ratio (85-90%) x pressure ratio (5psi = (14,7+5)/14,7=1,34
So:
3L x 6500rpm x 0,5 x 0,85 x 1.34 = 11105L/min (or 11,1m³/min or 666 m³/hr)

And this is with a fairly low 5psi boost, and a non optimized flow in/out the cylinders (so no extra cams, headers, large plenum etc etfd)

So where are those points on the compressormaps:
see the red dot
M62:

M90:

You can see that even with the m90 it starts to loose efficiency in the top rpm, but say on half throttle, you'll be in the optimum range. And there is some room for higher boost, up to say 7-8psi no problem.
But you can clearly see that the m90 is a far better match.


And to go a bit further:
if you take for example a lysholm 1600ax that is used in for example ESS kits, you get this: (the red dot is for the above calculation, the blue one for the TS2+ calculation):

You can see that the 1600ax is too powerful for low boost (and performs better at medium/high boost, say 8psi and above), although if you look at the efficiency range, the red dot still has a comparable efficiency as where it is on the m90 chart )

If anyone thinks these calculations are off or not quite correct, like using more correction factors, I'd like to hear

 

@GuidoK Thanks for the info on the M90 vs M62. I have a M62 on the way but you've convinced me to try to source a M90 for my project engine. (I'm picking up a ZHP block this week to put on my engine stand...)
Where did you find those maps?

 

Im still doing this is spare time. Got flanges made. Still going ahead with it and if m62 is no good for me it could be used on a 320 or 325. M62 is cheap here. M90 i cant source easily.

 

Ebay , but search US listings, they are dime-a-dozen (150-350 USD) commonly used on the GM 3.8 FWD pontiacs buicks, olds, etc so if you see a 3800 supercharger, that's the eaton M90 available in at least 5 generations going back to late 1980's.

 

Many thanks ***x1f642;

 

Wow this is actually a decent idea...following

- What are you guys doing for the intake portion of the system? Like the intake tube to maf area?

 

Check this out, they sell complete kits to install this supercharger.
And they have brackets for the SC14, the Eaton M90, M62 and even the M122H which is a beast capable of 10 - 25PSI of boost.
https://hydemotorworks.com/supercharger-setups/#HMW_V21X_SC14_Setups

 

As has been pointed out, M90 came on 3.8l (231) GM for decades, across Pontiac, Buick, Chevy brands. It went through several upgrades (5 generations?) and there was a very healthy aftermarket supporting them due to the size of the install base. I used to have an NA Firebird 3.8, and did some cursory research that direction long ago. The L67 engine code (FI version of the 3800 Series 2 and 3 as opposed to L36) Pontiac M90 had a longer snout, but I believe a few of the snouts swapped directly. If you are looking in a yard, you want LaCrosse, Monte Carlo, Park Avenue, or Grand Prix GTP. All of those were in production with blowers into the mid 2000s and were still getting upgrades and refinements, although some of that was in intercoolers that wedged between the blower case and the intake manifold, and wouldn't be useful to M54 folks. All of those motors were FWD transverse mount, for what it is worth.

https://zzperformance.com/ was big on that scene, and they still carry parts, including ported cases. If you can get an M90 to work, they are cheap, plentiful, oem reliable and still supported if you know where to look. I want one on my X5.

 

Did you guys ever finish this project? Landlorder

 

Just busy with life but this is not on hold.

 

Looking forward to seeing the progress. I wanted to go turbo, but this being a second car I can source together a DIY kit like this.

Plans are to take a GM 3800 S/C and get it to work. Land, do you have the prints or specs by chance? I have 2 friends who do CNC and I would like to make the brackets.

 

You can use the DISA connector output to control the clutch on the supercharger pulley.

 

have you looked at Hydes stuff?

 

Well life got in the way so I gave up on this....!