190e m103 supercharger almost complete - Page 3 - PeachParts Mercedes-Benz Forum

#31 02-06-2005, 11:35 AM

Benzito I have talked with you in private about the supercharger.

I have an Eaton M90 3rd gen as I told you but I have a 1992 with EGR and Air Pump so this leaves a bit of a question. Now I have studied up on dimensions differences and now im thinking the M90 may not fit at all.

M45 dimensions
Eaton M45 3rd gen.

13 in long and 4.8" high and 7" wide. Would you say these are the proper dimensions of your specific SC?

now here are the M90 dimensions.

Eaton M90 3rd gen.

16.4 inches long 5.5 in high 8.1 inches wide.

What do you think too big?

Also, how did you make your gaskets or do you not have any gaskets? I figure I need gaskets between the inlet to the SC and the outlet to the sc then another one for the throttle body. Do you know of a company that can do cutsom metal work or can your friend do it? Id be willing ot pay up to $1000 for the custom parts I need, maybe more if they are all to specification.

In other words in need the Mounts the flange and manifold for the intake to the SC and the outlet and the throttle body connection. I can get my own pipes and bypass valve.

Cant wait to see the pics

ANDY

HZach · #32 02-07-2005, 01:46 PM

I am contemplating an Eaton M62 for my '90 M104. Did you guys get rid of the air pump to mount the SC or did you mount it next to the pump? It is hard to see on the pictures you posted.

Thanks for the info.

Blown_M104 · #33 02-07-2005, 03:22 PM

HZach;

On my install the SMOG pump was removed to make way for the blower. The install was a lot easer with it out of the way. This factory air pump only runs a very small percentage of the time anyway and it is certainly not missed.

I've got some high resolution photos of the blower placement; if you want them send me an email address than can handle a few Mb.

benzito190 · #34 02-07-2005, 07:05 PM

Sorry about the delay guys, been a busy week... anyhow. I honestly think the m90 is WAY to big in displacement if not size. It's more suited for v8's over 4.5 liters (for example,m they use it on the 5.4L lightning motor). An m45 is working great for performance increase and better overall drivability plus it's easy on gas milage in normal operation and easy on the stock FI system. The m62 could fit and would probably work well on a stronger m103 builup with some more major fuel system mods and would probably actually be better suited to the 3.2L m104 mills. I just custom-cut some autozone gasket paper and topped it with some RTV sealant. As for fabrication, if I can find time, I've become pretty good at fabrication work and I could probably make a bracket for a fair price (mine took out about $50-60 in materials includeing the idler on a high guess and took me a couple evenings to really get it all lined up properly. So maybe $250 altogether sound fair for the mounting bracketry?). I could do it pretty quickly if you're willing to go for the same sc that I have (an eaton m45 off an earlier c230k). That way I could just copy my bracket. Mine set me back $220 for the unit and about $25 for the rear rotor bearings shipped. My car never had a smog pump (go 1989!), or egr for that matter, so that left a big fat hole next to my engine that fit the c230k unit perfectly. It would still fit fine on newer models, but you'd have to remove the smog pump and idler.

super SEC · #35 02-07-2005, 09:50 PM

M90 is designed for cars from 3.0 L to 5.0 L in displacment.
A Ford Lightning uses the M112.
M45 is designed for cars with between 2.0 to 3.0 L in displacement.
M62 is designed for a 2.5 L to 4.0 L engine.

For more information: http://automotive.eaton.com/product/engine_controls/superchargers/superchargers.asp

ke6dcj · #36 02-08-2005, 12:18 AM

People have had success with the air-to-water intercoolers off a GM Typhoon and using a Mercedes/Bosch auxiliary water-pump.

:-) neil

http://www.rx7club.com/showthread.php?t=256178&highlight=typhoon+intercooler

http://www.rx7club.com/showthread.php?t=331340&highlight=water+intercooler

benzito190 · #37 02-08-2005, 11:45 AM

Thanks for the correction, I lost a category of eatons in my mind somehow... the m112 is the lightning charger. The m90 was used on some of the 3rd gen 3800SC GM mills. I'm still a little iffy on whether the m90 would be a good match for a 2.6L-3L motor unless the entire fuel/ignition system was revised. I could be wrong on this but I'm pretty sure the 3.2 AMG motors use a proprietary m62 cast and manage to put a very respectable amount of power to the ground. For a higher output buildup, from what I have read, I would opt for the m62 on the 2.6L m103. I figure if the 45 cubic inch blower can make a really noticable increase while staying more or less within the factory spec (14000rpm, mine spins up to roughly 14400 @ 6Krpm), a 62ci blower could make quite a bit of power.

Sportline93 · #38 02-08-2005, 03:35 PM

I am in southern california and I would love to see your supercharger setup....for around $400-$500 I would be able to do it too. You think it would be possible to meet up so I could check out your setup?

Thanks, Chris

Badinfo · #39 02-08-2005, 04:11 PM

Do you guys think the m45 generates enough boost for a 3 litre m103 application? Something mild but i dont want boost completely running out on the top end.

wbain5280 · #40 02-09-2005, 12:28 AM

Wouldn't an M62 be better for a M103 3.0L engine?

Badinfo · #41 02-09-2005, 01:48 AM

Thats what I am thinking.

benzito190 · #42 02-09-2005, 02:51 AM

Sportline, yeah I'm in the riverside/san bernardino area so you're only about an hour drive away, it would be nice to see an actual sportline too, you don't see too many of those driving around. Right now, I am taking the sc off for a few days to replace the rear bearings and brush up the cosmetics of the system + maybe some fine adjustments on belt length and bracket, Though once I have it finished it would be cool to meet up. Plus it's always cool to talk to other benz guys. I thiink I'd opt for the m62 on a 3 or 3.2 liter setup. The m45 would make a little bit of boost, but even with a bit of an overdrive it's only good for about 215-220hp on the high end. The m62 is good for the mid 200's without too much trouble. If I had the flexibility of an extra half liter, I would have probably gone with the m62, but I didn't really feel like pushing a 2.6L with over 130k miles on it with the bigger 62ci blower. Though who knows, maybe after a rebuild I will go for a bigger blower or a turbo setup. Not to mention the 300e is a bit heavier than the 190e so the weight would probably work out well with the extra output capability of the m62. I'd imagine a ford t-bird super coupe m62 would fit nicely, and the brackets would be pretty basic.

Sportline93 · #43 02-09-2005, 11:09 PM

Sounds good. Jus let me know whenever you want to meet up. The M45 sounds good for my 2.6.

benzito190 · #44 02-12-2005, 11:46 AM

My rear rotor bearings came in the mail, so the sc system is all apart again, I'll post some pics of the bracketry now that it's exposed and visible. Unfortunately, financial constraints will probably keep me from getting it all back together until next weekend with a new/improved flange setup on top of the cis box :-( but I'll keep everybody updated.

mnoll4060 · #45 02-23-2005, 03:12 AM

Hey Benzito,
Great work, and great thread. I had no idea cis could support forced induction. I thought I would have to go EFI. I have some questions about the EHA and fuell mix tower. I thought EHA only controlled idle, does it control through the whole RPM range? I'm getting some hesitation when flooring it at higher rpm's. I'm also in Sothern Ca. Would love to see the setup some time.

Mike

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode