I havn't read the entire thread, but if anyone is looking for good information on turbocharging, Corkey Bell's Bluebook of turbos or something like that (its written by corkey Bell) is one of the best books you can get and will teach you alot. My old dream was to have a 2.3 Liter turbocharged VTEC CRX so i read up on it alot, but as of recently (a free MB) my priorities have changed.


James

Honda never made a 2.3 liter engine. The highest displacement 4 cylinder engine they made was an H22 (2.2 L). Unless of course you mean boaring and stroking to 2.3

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1993 400e
Charlotte

Honda did make a 2.3 liter non vtec engine (h23a or something) but they are too heavy and too big to put in a CRX. My plan was to take a B18 (from an integra LS) bore it to 86MM and use the crower stroker kit to bring it up to 2.3L. Then i'd take a b16 head (VTEC) and do some stuff to it. LALALA it was just a childish dream of mine if one day i ever had money. You have to have dreams though to get you through the day. ::sigh::

What's the latest on the Mercedes Benz hot rodding? I would be interested in adding a turbo to my M103 but the exhaust manifolds are my big question mark. I would strip off the CIS for EFI as well.

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Regards

Warren

Currently 1965 220Sb, 2002 FORD Crown Vic Police Interceptor

Had 1965 220SEb, 1967 230S, 280SE 4.5, 300SE (W126), 420SEL

ENTER > = (HP RPN)

Not part of the in-crowd since 1952.

For an M103 manifold I'd get in touch with this guy: BNZBOY

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89 190E

there are other companies which make the whole manifold from a single piece, not an exhaust manifold molded into a stock one.

better to do that if you want to run more power

Would a rising rate fuel pressure regulator work on a turbo CIS M103?
Also, won't the turbo boost push the Air-Flap down, causing the fuel/air mixture to be altered incorrectly (the stock motor can only pull the flap down so far through suction, won't the turbo push it down too early causing a rich mixture? Untill it hits the bottom that is, then, provided the revs are up high enough you are back to a lean mixture). Is this the case?
Super SEC, how did you adjust the EHA? Does the M103 have an adjustable EHA? Can it be modified to enrichen the mixture with the increasing air flow?

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Andrew
300e 294,000mi
380sel 185,998mi
380se 309,980mi

"Would a rising rate fuel pressure regulator work on a turbo CIS M103?"

I don't think it will.


"Also, won't the turbo boost push the Air-Flap down, causing the fuel/air mixture to be altered incorrectly (the stock motor can only pull the flap down so far through suction, won't the turbo push it down too early causing a rich mixture?"

Yes, if you don't use a vacuum operated blow-off valve it will. However, it works perfectly with a blow-off valve in place.


"Untill it hits the bottom that is, then, provided the revs are up high enough you are back to a lean mixture). Is this the case?"

That's why you have to adjust the fuel pressure much higer.

Super SEC, how did you adjust the EHA? Does the M103 have an adjustable EHA? Can it be modified to enrichen the mixture with the increasing air flow?

I don't know if it has an EHA or not. I'd imagine it does if it is CIS-E. The EHA on my SEC is on the back side of the little black bok that is mounted to the side of the CIS. There is a little brass set screw that you have to remove to get to the adjustment. A little bit goes a long way.

My power is nearly double what stock is so my pressure is very high. I recently installed an air to air intercooler and a cold air intake for my supercharger so I may have to readjust the EHA once again to deal with the extra power.

With a turbo, you absolutely need a RRFPR. Look at older Volvo 240 turbo's. They have CIS and work quite well. There is no knock sensor so they have a modest boost level. Later 740's have Bosch LH 2.2 with EZK 117 and a knock sensor, a CR of 8.7, an intercooler and higher boost levels.

Run premuim gas.

__________________
Regards

Warren

Currently 1965 220Sb, 2002 FORD Crown Vic Police Interceptor

Had 1965 220SEb, 1967 230S, 280SE 4.5, 300SE (W126), 420SEL

ENTER > = (HP RPN)

Not part of the in-crowd since 1952.

Hi Everyone,
UPDATE: I have purchased a couple items over the last couple of months for my turbo project, which has grown into a monster of a project. Here are some pics of some of the custom parts I have made lately.

The turbo was assembled with parts I purchased. I did this to achieve a perfectly matched turbo for my application. The compressor housing is T04E 50 trim with a 57 trim Super Series Compressor Wheel, The turbine housing is a Turbonetics T3 0.63 Discharge, 3" V-band Discharge with Turbonteics Stage III Turbine. I am using a Tial 38mm external wastegate (Next to Turbo) instead of the internal T3 wastegate. I polished the compressor housing to prevent heatsoak. The turbine housing was ported and polished inside and out as well as Jet Hot aluminum ceramic coated to lower under hood temps.
Also pictured are my custom stainless steel valves, which I developed and had produced. These were designed to be lightweight and are able to take a lot of heat. They have better flow characteristics as well. I have the stock intake and exhaust valves pictured next to the customs for comparison. The valve stems on the exhaust side were decreased in size to 8MM. this helps to lighten the valve since I will no longer be running the stock sodium filled ones. Unfortunately I will have to make custom valve guides as well. You can also see that the valve stems are longer by the valve stem lock grove. I did this due to the new cam profile I had desinged to match the turbo. I have a lot of other components almost ready. Check back periodically over the next few months. I'm going to try to get this project done before spring 2005..
Adam

Attached Thumbnails

         

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Current Stable:
01 ML55 AMG
92 500E (a few mods)
87 300E (lots of mods)
00 Chevy 3500HD Diesel Box Truck
68 18' Donzi Marine
06 GT i-Drive7 1.0 Mountain Bike (with GPS!)

PREVIOUSLY OWNED:83 300SD, 87 420SEL, 88 420SEL, 90 420SEL, 86 560SEL, 86 190E 2.3-16V AMG, 94 E320

woohoo!

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-Kevin

UPDATE: The M103 block out of my parts car is now ready for painting. The block has been cleaned, cleaned and re cleaned as well as deburred to reduce stress points, sharp edges and loose material. Below are the pics of the raw block before I start on my weeklong process.
Enjoy!
Adam

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Current Stable:
01 ML55 AMG
92 500E (a few mods)
87 300E (lots of mods)
00 Chevy 3500HD Diesel Box Truck
68 18' Donzi Marine
06 GT i-Drive7 1.0 Mountain Bike (with GPS!)

PREVIOUSLY OWNED:83 300SD, 87 420SEL, 88 420SEL, 90 420SEL, 86 560SEL, 86 190E 2.3-16V AMG, 94 E320

Here is the block all painted! The inside is coated with Glyptal. Glyptal is an insulating paint used primarily for coating electric motor and generator armatures. Racing engine builders use Glyptal for coating the inside of the crankcase to seal in dirt and casting sand which cannot be washed out. The smooth surface also reduces windage losses by sending oil back to the pan faster. The outside is painted with POR-15's engine block painting kit. I was going to powder coat the outside however, from what I have read, the POR-15 lasts longer and looks better than powder coating. It's was way cheaper too, $225 for the powder coating versus $60 for the kit plus 4 hours of work. The bottom pic shows how I heat-treated the Glyptal. I zip tied the heat gun to one of the cylinders and covered the top with aluminum foil. This method proved to work great. Now the block is ready to be bored, honed and planed next week.
Enjoy!
Adam

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Current Stable:
01 ML55 AMG
92 500E (a few mods)
87 300E (lots of mods)
00 Chevy 3500HD Diesel Box Truck
68 18' Donzi Marine
06 GT i-Drive7 1.0 Mountain Bike (with GPS!)

PREVIOUSLY OWNED:83 300SD, 87 420SEL, 88 420SEL, 90 420SEL, 86 560SEL, 86 190E 2.3-16V AMG, 94 E320

Incredible.

Tell us more about the programmeable EFI on the 500E . . .

:-) neil

I have been reading this entire post from beginning to end for few hours now on and off - that's what I do when I am at work bored off my ass. This post made me a)really want to put a turbo on my 300ce and b)think of an interesting question. I am 99% sure no one in this post addressed this yet but I have been thinking the entire time, why wouldnt a turbo from a turbodiesel (any w124 TD models) of a similar engine work on an application like this(w124 model)? If it is a mercedes turbo, why not use it to make another mercedes a turbo?

I hope that isn't too stupid of a question, I know nothing about turbo chargers (or engines for that matter) but hopefully you guys can answer my question!