Want to supercharge my m104 - Page 3 - PeachParts Mercedes-Benz Forum

greeny300e · #31 02-19-2012, 05:27 AM

Quote:

Originally Posted by topdeez

I was thinking if the attached pic fmic can fit, it measures 29x8x3.5 overall inches, I can run a 2.5 pipe from the intercooler to the factory intake piping. This way I dont have to worry about breather filters and getting rid of the helmholtz silencer.

I also have the same idea
my question is

1. Would the boost will force down to the 2 oil vent on the valve cover or?
2. At the end of the intake pipe there is a AIR TEMP SENSOR and i think the connector is designed for vacuum use only the pressure would leak .

whipplem104 · #32 02-19-2012, 09:29 AM

two things when boosting a m104 or any n/a motor. You can not run boost through the stock pipe with the crankcase ventilation. It will just blow all the seals out of the motor and oil with it. The lower ventilation shown in the picture also needs to have a pcv check valve put in also.

greeny300e · #33 02-19-2012, 10:02 AM

Quote:

Originally Posted by whipplem104

two things when boosting a m104 or any n/a motor. You can not run boost through the stock pipe with the crankcase ventilation. It will just blow all the seals out of the motor and oil with it. The lower ventilation shown in the picture also needs to have a pcv check valve put in also.

Thank you very much to confirm it.
What about those 5-6 vacuum lines that connect to the throttle body and intake manifold?

Do we have to put the check valve to all of it?

( Turbotechnic only suggest to put a check valve on a transmission modulator)

whipplem104 · #34 02-19-2012, 10:12 AM

I would put a check valve on any vacuum source, that does not already have one, except the vacuum modulator for the transmission. I do not know for sure if the modulator increases pressure with boost over n/a but it does not hurt it at all. I ran boost on mine for 6 or 7 years. Also turn up the modulator for more pressure otherwise the trans will slip.

topdeez · #35 02-21-2012, 06:51 PM

Trying to upload pics in both IE and firefox and it keeps failing.
I have a few updates and want Pics!!!!!
Any suggestions?

Rock

phat_merc · #36 02-22-2012, 03:54 AM

Use tinypic.com: The Leading Tiny PIC Site on the Net always works for me.

topdeez · #37 03-04-2012, 10:13 AM

So far
Gauges installed
Tapped vacuum from brake boost and ran to distribution
Installed ame fic 6 and made a home for it in the engine bay
Mocked up a template for s/c bracket and made the bracket
Mounted sc to bracket with idle pulley.
Still waiting on universal inter oiler kit and sc oil cooler along with the diverted valve

Click on link below Im still yet to upload gauges installed
Thanks for the pic upload suggestion

Next week I'll have the bung installed for the a/f o2
I have limited time so this will take a few more weeks

greeny300e · #38 03-04-2012, 10:58 AM

I just go to your photobucket
then click IMG code
then paste it here
very simple

topdeez · #39 03-05-2012, 11:13 AM

Wiring of the f/ic..tedious

F/ic working with no problems...yeah!!

WayneH · #40 03-23-2014, 02:58 AM

Hi

I am new here. I have a 90 300CE24 with a M104.980. I am wanting to Supercharge it and having problems finding good aftermarket forged pistons with which I can lower my compression ratio. Can any one please suggest where I may find aftermarket piston please.

Thanks

duxthe1 · #41 03-24-2014, 08:07 PM

Quote:

Originally Posted by WayneH

Hi

I am new here. I have a 90 300CE24 with a M104.980. I am wanting to Supercharge it and having problems finding good aftermarket forged pistons with which I can lower my compression ratio. Can any one please suggest where I may find aftermarket piston please.

Thanks

Probably should start a new topic, instead of resurecting a dead build. That said, I seem to recall the boosted 104 guys determining that the connecting rod is the limiting factor in the 104 longblock. Been a while.... maybe one of them can chime in with details.

MAG58 · #42 03-24-2014, 08:43 PM

Quote:

Originally Posted by duxthe1

Probably should start a new topic, instead of resurecting a dead build. That said, I seem to recall the boosted 104 guys determining that the connecting rod is the limiting factor in the 104 longblock. Been a while.... maybe one of them can chime in with details.

Nah. I mean it might be in his engine but the .980 is an incredibly stout motor. Pumpish runs stockers on his, whipple is still on the stock rods though he says he'll change them above 500whp. Not sure how necessary that is.

Fwiw except for the .94, they're the exact same rods as your car.

duxthe1 · #43 03-24-2014, 08:54 PM

I wasn't too sure but I thought I remember somebody breaking a rod with a stock piston. FWIW, I thought that the 104 had a slightly longer rod. Hard to keep up with in all the inline MB motors.

MAG58 · #44 03-24-2014, 10:50 PM

Quote:

Originally Posted by duxthe1

I wasn't too sure but I thought I remember somebody breaking a rod with a stock piston. FWIW, I thought that the 104 had a slightly longer rod. Hard to keep up with in all the inline MB motors.

They do it in the 16V cosworth motors (I think Joreto's 2.5 chucked a rod out the side of the motor here) but I don't know of any M104's or M103's that have nuked a rod with anything less than terrible detonation that went uncontrolled. Doesn't mean that there aren't any and I'd personally love to see someone break one. The stock 3.2 pistons are weaker than the 3.0 as they have the ring lands moved up and closer together.

That said the 3.0/3.2 M104 shares the M103 rod which shares the M102 rod at 145mm. The 2.8 rod is different at 148mm to compensate for the 2.8's little bitty stroke.