BAD300

Car is now in LPG performance shop. They have to fabricate some sort of splitter box that sits maybe on the new intake mani? to enable both the kick down cable & throttle cable to run to the new throttle body position (no in front of left headlight cover @ front of mani). Also, concerning the ignition rewiring, they'll prolly have to bypass the CC module on the block? I think considering aftermarket steering wheel, it won't work anyway? Too much bull shat to sort now imo.

Also, they're going to luv me for pouring oil all over the rocker gear/valves prior to turning engine by hand @ my place I'm positive I got oil down the valves & definitely squirted oil down each spark plug hole Um, I will have to warn them

So, here comes the fun! When it gets home from shop this time round, I need to replace shocks/springs/front brakes. Install sound system just for starters. I will pop pics up for all this home stuff. Also, pics when car gets home after the engine bay work of course

EDIT: It will be very interesting, on the pocket too, as to how the hell the workshop will re rout throttle & kick-down cables to reach the front of the boxy plenum as this is where the LPG mixer now sits. Looks like they will be making up a divider, perhaps a bracket of sorts positioned @ the rear of the plenum where cables will unite & then subdivide to join other section of cables then heading down to throttle body/mixer Then they will have to fabricate an enclosure box for the pod filter I guess?

Indeed will be interesting............

BAD300

GUYS! she's gonna get BOOSTED yeeeehar! I convinced the wifey the need for power hehe

Was pondering the expense of needing entire new stock exhaust system from headers to tail this morning & on the gutless performance the car will be coming home with as an N/A on LPG when I had this brainstorm......"boost the thing now or go to hell" so, spoke with shop this morning who added the custom boxy would be horrible to tune as an N/A so, I said "er.......let's boost t now & get it over with already

He starts the LPG set up today & will discuss the fabrication of the steam pipe turbo header with his guy this week. I also have to take all the turbo & gear over there later in wek so he has it all ready to go.

FINALLY someone gives a crap about the 300E & there's no turning back, Jack!!!!!!!!

Shoomakan

You've already started the stopped the project a couple of times from what I've read. :P

I really hope this is it! I convinced the wifey too, by the way.

BAD300

Not easy finding a reliable shop wanting the work buddy. Not my fault that Mercs are not a draw card down yonder

Shoomakan

I know, of course it isn't. They're hard cars to work on anywhere.

BAD300

Has anyone run an electronic boost controller with stock ECU? Can you do this even?

Shoomakan

I don't think you can run an electronic boost controller on a CIS system.

BAD300

Nah, I'd say not but will the factory ECU pick it up? btw, car does not run CIS. Long gone. Ignition is via MSD & fueled with LPG via a mixer!

chlippo

wont work. Plus if in any case it will (i doubt) it will be hard to manage, on boosted M103 i prefer to use simple stuff so i say
get a regular mbc. I got a forge unos mbc. very precise and works great!

Shoomakan

I don't understand manual boost controllers. How do you increase boost without adjusting fueling and timing and all that jazz?

I mean, some cars with MAFs (or was it MAPS, I keep forgetting) allow you a certain amount of boost before the ECU ceases to comply. The Toyota 2JZ comes to mind.

BAD300

Nothing to do with fuel/air/timing Shoom. A manual boost controller simply operates via vacuum to manipulate when the turbine wastegate opens @ a given psi ie: boost setting, either venting exhaust gases or recirculating them

chlippo

you adjust the fuel manually. Thats the case with the M103 engine. Fuelling cant be adjusted in an electronic way. You have to do it manually...then you add the boost using the mbc. ecu wont do anything on an M103/M104 with cis. to add fuel you will have to mess with the eha and the fuel distributor.

Or the second option is to add additional fuel injectors that can be tuned via a laptop. This way you can have some sort of tuning so the additional injectors compensate where the cis system fails to supply enough fuel

BAD300

whereas, with mine, there is no CIS, just LPG haha

Shoomakan

Ah, ok. It makes more sense now.

BAD300

Ok. So I can't run an ebc due to the dinosaur ECU. That's fine. But I don't want a mbc & the hassle of adjusting it up & down & inconvenience thereof. So, I am looking into a high/low switch as they have mounted in the dash of the early boosted Jap cars. They had a sophisticated ECU though obviously. an I run one of these? Is it simply an electrical toggle switch like in an auxiliary/thermo rad fan? Anyone know?

BAD300

Can anyone shed light on a quality brand external wastegate equivalent to Tial for less $'s? I mean $650AUS for a 44mm

EDIT: a member from another forum sent me a link to US dealer for the WG. Prices are great so will be looking into this today. Tial BOV is about the same $$'s though but if packed together will save freight.

Concerning the boost controllers, I can run an APEXI, or the like ebc as they have their own computer to control boost but they are too expensive for my liking...............

Also, looki looki into a way around the turbine housing dilemma I am faced with namely, whether to go with current .63 A/R or swap it out for the .82? sooooo, me thinki thinki.....a while back I mentioned I was researching into twin scroll turbine housings & went hard down this road for a bit but decided against it due to extra cost to swap over as it needed to be sourced from US for my custom turbo. Well, turns out I may just pick the banner up again Why? It will solve the housing dilemma

I have my turbo manufacturer getting back to me in an hr or so with availability of a .82 A/R twin scroll T3 housing to suit the turbo & may be here in Aus This way the header fabrication won't be held up as they can use the T3 footprint & swap out later even = much goodness

This is a really important mod for me & will ensure the car will be more competitive on the street hehe. Will report back with how it goes soon. Kinda running outta time with preparations now. Shop needs to get moving along..........

BAD300

Concerning the twin scroll housing, it uses a V Band exhaust housing so this will save me not having to get a dump pipe flange made up to suit as I need to with the current .63 housing. Also, I will get a discount if I send the .63 housing back.

Concerning ignition, we're having alot of hassle trying to work out the MSD set up that was originally on car. Real pita!!!!!!! Just can't see how the car originally got spark with this set up? Even a Merc guy we consulted states we need the original distributor but it's on dedicated LPG via a mixer damn it So effectively, we're stumped until we work this part out Either we source a trigger wheel here or we may go Haltech with wasted spark? This is what I'd rather do so we can get moving on it. Trying to work with this MSD is holding the whole thing up............

chlippo

im sorry for you....but your car combination is more complicated than a regular booster M103...imo that lpg disturbs pretty much everything.
if you had msd efi, a regular boosted M103 would do an easy 300-350 bhp on stock internals!

Shoomakan

I'm under the impression that M103's are as strong as M104's internally. M104's can take 400 bhp safely. :P

According to my months of research on the subject, a better headgasket with a slight compression drop and heavy duty head bolts and it should take you past 500 reliably. But then you're chassis will start to crack in two if you take it road racing.

400 bhp seems to be the sweet spot.

BAD300

Yeah chlippo, the LPG sorta makes it difficult. Once it's sorted though, pretty sure I can sort the rest from there

Shoomakan, the M103 & M104 bottom ends are the same really. The M103 head is prolly stronger & better for boosting going off Romans' (PUMPISH) recommendations although, would certainly like the piston oil squirters from the M104 block Yes the head gaskets, as with the rings, are the weakest links but I think my engine's an 89' or 91'? so hopefully it had the better HG than the early ones?

It's not so much the hp I'm worried about rather, as chlippo suggests, the fact I'm on my own with the LPG set up. But @ least it's in the best workshop around for getting this kind of set up right

the_widebody

i bumped into the guy who did my crank grind and bottom end build at the weekend, we got chatting, and he told me that my engine block had oil squirter's in it, he says he showed me them one time down a the shop, but it was so long ago, i cant actually recall, but he is totally sure it was my engine, as it is the only 6 cylinder merc engine he has ever done.

so it seems the amg 103 engine was built very well indeed.

the_widebody

dump the auto box, stick a manual in it and half the throttle cable worries will be gone

the_widebody

dump the auto box, stick a manual in it and half the throttle cable worries will be gone

BAD300

That's weird if that was an M103? Concerning the box, I've already rebuilt the auto so it'll stay in. Might sound odd & I know the manual box would be ore fun but I'm kinda wanting the ease of power with the auto as opposed to the manuals' direct power. I read the stock 722.3 box is good for around 380bhp so it definately will be maxed out with this things power. Also the stock diff will be tortured as it is & would snap with a manual no doubt.

I'm hoping up ahead to measure an aussie XR6T LSD to see if it will be a fairly simple fit?

Shoomakan

Direct bolt on swap is the mechanical LSD of the 190 E AMG. It handles power fine.

I'm getting one before I go with my unnatural aspiration. :P