questions about NON DASC supercharging.

[WhoNew]

Hey all.

New member here, but I am a member of www.chitownm.com, and bimmerfest.com. unfortunately, the M44 is somewhat of a mystery to everyone without a 318. so here I am for all of your knowledge, and to pick your brains !!

I have a 96 318ic, M44.

What is the rating of stock M44 fuel injectors, LBS/hr and also, has anyone tried to put a roots type S/C without using the dasc kit ??

I was going to try to put an eaton M90 S/C in, but can not find some basic info.

[thesk8nmidget]

go check out m42club they have info about using that same supercharger

[lpcapital]

What is the rating of stock M44 fuel injectors, LBS/hr

Injectors are Bosch 0-280-150-501. There's not many information out there about the rating, but at the stock 3bar (43psi) they are ratead 191.8 cc/min which eqauls to 18.25 lb/hr or 138 g/min. They are high impedance (16 ohm). That's all I could gather.
You might ask the guys at DASC: I guess they have some datas since their kit uses higher fuel pressure to ingrease flow.
Or you can shoot an eMail to Witch Hunter (they do injector cleaning): they might have more datas.
Let me know, I'm interested in the subject as well.

[WhoNew]

Thanks, very informative. i checked over at m42club, and nothing found worthwhile

[lpcapital]

Thanks, very informative. i checked over at m42club, and nothing found worthwhile

I'm curious as well. I'm gonna send an email to Witch Hunter and see if they know: they recently serviced my injectors... Which should actually be back tomorrow...

[WhoNew]

Well, Today I got my Eaton M90 from ebay. it's as big as my M/44 !!

Before
http://i277.photobucket.com/albums/kk75/davidrvahl/4c31_1.jpg

AFTER
http://i277.photobucket.com/albums/kk75/davidrvahl/100_1107.jpg

http://i277.photobucket.com/albums/kk75/davidrvahl/100_1106.jpg

Just waiting on my lower intake to start fabrication....Thanks Bluebimma !!

And I need a Short nose for this darn thing. Time to start searching !!

[lpcapital]

Good job cleaning it. I was reading somewhere of a company that services Eatons. I dunno if I can find it again, but let me know if you're intersted and I try...
I asked Witch Hunter about the injectors and waiting for a reply.
Btw, my injectors were tested at 3 bar and they came out to be 202 cc/min, compared to the stated 191.8.

[WhoNew]

actually, I took it completely apart, cleaned EVERYTHING, including the rotors to inspect them for missing coating, scratches, etc. I also had to remove the bypass butterfly and shaft, and clean them and repack the bearings with grease. Cleaned the drive gears out and changed the oil. Didn't pay any attention to the nose, cuz I need a short one. so, I serviced it enough for now !!!

[WhoNew]

I have a very similar post in the lounge, so I'll check both from time to time, and post progress in both areas also, if it's okay with the MODS.

[WhoNew]

is there a short answer on weather or not the m62 snout can be swaped to an m90.

I must have googled everything under the sun, but could not find and answer

[lpcapital]

Got a reply today from Gordon at Witch Hunter. He was suggesting to use the Calculator page (http://www.witchhunter.com/injectorcalc1.php4) on his website to figure out the proper size injectors or how an injector will perform under different fuel pressures. I hope it helps.

[WhoNew]

Hey thanks !! it says I need 37.5 LBS/HR injectors for 200 HP at 80% duty cycle. VERY HELPFUL, you rock.

[lpcapital]

Hey thanks !! it says I need 37.5 LBS/HR injectors for 200 HP at 80% duty cycle. VERY HELPFUL, you rock.

Don't thank me; thank Gordon over at Witch Hunter. He's very knowledgeable on injectors.
Glad it helps, however, when it comes to tuning the SC I would consider a wide band O2 sensor and some software to access the DME and not rely sole on what the theory says.
I'm no expert on the subject whatsoever, just starting to get some knowledge on the subject before SC the Z3 (if it ever happens).

[WhoNew]

Hey witch hunter, thanks, your web site rocks !!