Considering the Comp housing on my GT3582R is .70 A/R, I am leaning towards the .82 as I believe it's a better match than the present .63 A/R hotside.

SO, as I've heard, is the M103s' "sweet spot" between 4000 rpm & 6250 rpm redline? If so, am I better off shifting my focus to the higher end of the rev range? Concentrate up here to get the power advantage of the engine @ this range?

Up until now I was aiming @ quicker spool time & quicker pick, hence the smaller .63 A/R housing originally purchased. But considering the comp housing size, I now think this is perhaps a mismatch made in hell? not only working in the wrong rev range but coming on boost too early & causing excessive wheelspin.

I really want to make a final decision tomorrow when I have to speak with shop concerning spark.

Thanks guys in advance for your input

 

Well, after discussing back & forth with shop today, finally looked over the DIY MS site. Wow is all I can say The only thing it doesn't list is a VR sensor needed to read the trigger wheel but everything else is there. Man oh man!

For members that like the MS stuff, you can now get the MS III with MS3X v3.57 expansion card fully assembled for direct fire sequential capabilities & cylinder by cylinder fuel/ignition control? Some may have but I am blown away because this means the workshop can use it instead of the expensive stand alone's such as Microtech spark only ($980AUS) or the top notch Haltech Platinum Sport 2000 stand alone, like $2k without harness Fark off

I need to exhaust why I can't simply go wasted spark & use the Ford EDIS-6 system for example. It's due to it's incompatibility issues my workshop has experienced with LPG in the past. He's won't use it again.

Haltech tried to convince him to go with the platinum ECU becasue they had great success with a Beema you see? Hmmmm. Good salesmanship.

So, this is why I took the reigns & did some searching & think I won out ey? When doing custom work on these cars, you have to source **** yourself man

 

After lamenting & stressed to the eyeballs over the last week, today after persisting with engineers over the phone I found one willing to work with me

As long as it remains dedicated LPG I can virtually do what I like! He just wants the intake manifold stock other than the mixer set up. 10mm clearances all around whole car. Upgraded brakes (already have the set I purchased). Suspension not too modified. Wella. He sees the car when it's finished & writes the VASS cert

Needless to say I phoned workshop immediately & told him. Also, will be 'bottom mounting' turbo on manifold. Will be most prolly using a Haltech aftermarket ECU so I can run direct fire coil packs to protect against detonation. I know the weak links of the stock engine are the rings/landings & HG.

Also, I am looking @ below mounting the turbo on manifold now & keeping the .63 A/R rear so, heaven help me in the wet
Am negotiating with shop today U& may even bring car home to finish some fitment of parts myself. I have been put onto an engineer shop in northern Europe my a member down under on another forum who fabricated "bolt-on" engine parts & offers VEMS EMS complete with plug & play harness May even get an turbo exh mani from him as my shop has increased prices. Ahhh don't you luv these morons

THINGS ARE CERTAINLY LOOKING UP ! It's just if I bring car home I don't have means or know how to do the intercooler piping & any fabrication ie: custom dump pipe & exhaust, not to mention tune.....

 

May have to top mount turbo after all as if I bottom mount it, I'll have to rotate comp snorkel & it will be pretty tight runners needed and dump pipe will be close to chassis. Just awaiting reply from OS engineer. He'll then do up a pre-invoice for parts & fab work then we're good to go!

 

OK. Car is not returning to the 2nd workshop where up until a week ago or so it was! I have just today spoken with the actual head office suppliers here of the LPG set up I am running, Gas Research, who in turn have put me onto their preferred fitter/specialists who's shop is about an hr & a half from me (The last shop used to be their retailer etc haha ) Anyway, Top guy who is both very knowledgeable & helpful, straight up front! Exactly what I have been looking for for 1 1/2 bloomin years! Remember I am customising a Merc on LPG & live in Australia So, cutting through the bullshat.....near impossible

OK! Here's some facts baby! When using LPG via a mixer as a fuel in a boosted application like mine, in order to ensure flow rate meets boost, you must sort out the LPG delivery properly! Sounds easy? Yeah right.......

First! The tank can have restrictions present, such as narrow lock-off valves/power valves etc, even inside tank as well This can straight away be a bottleneck restricting LPG flow to converters. Get this wrong & doesn't matter whether you have 6 friggin lines to the carb, 10 converters & 5 carbs. It will be restricted! Then, LPG flows towards converters where it is converted from liquid form to vapour where it then enters mixer (carb) then flows through manifold & then obviously to combustion chambers.

So, I will update this later but have spent hrs & hrs today (like I have the time ) researching & talking with guys to get it all right before I go charging @ bolting stuff on everywhere. I have ordered the 2 new B2 LPG converters that will supply vapour to mixer. I am sending my old mixer to shop to have it looked over & prolly will get a bigger new one or, bore out venturi to allow more flow to engine.

I am also confirming invoice for parts from Scandinavia today before officially ordering & paying for them so fabrication can begin.

I have stripped interior of car ready for sound system install too. Damn wires run everywhere on these cars. Down both sides of floor I want to run RCA leads separate to power leads obviously but even the elect switched that run under console between front seats cause me a problem. I should really run speaker wires away from RCA too. Bloomin wires

I'm also sorting where to fit both converters. They really should be mounted horizontal due to mixing of the B2 brand converters. Prolly on left guard of engine bay, one atop the other? I want it neat but this will make it difficult to hook lines/hoses up. Having them side by side in parallel positions will be easier to hook up lines but take up alot of space.

Anyway, will update when I sort it out

oh.....& you don't need to run twin LPG lines from tank to the converters either. 1 8mm line will feed 500-600hp! That saves me some severe trouble

EDIT: well you just gotta luv PayPal huh......6 months it will take them to lift limit imposed on engineers' OS account & after heaps of paperwork! So, now I have to do several bank transfers which I was trying to avoid Now he has to return my money into my PayPal account. Better not be charged for this damn it...........nothing is ever simple is it

 

Sound system Update:

Have decided against using the fibreglass bucket enclosure for subs in boot. Cannot read where this design would work? Kinda like a basspass enclosure but it cannot be sealed properly so, doubt it works well. Just means I have to seal the sub boxes they sit in now.

The 2 rear parcel shelf vents can act to let some of the subwoofer bass sound into cab. I will prolly install rear 6 1/2" coaxial woofers over against rear screen on the parcel shelf.

Have installed head unit. Wrapped double-sided insulation around all 3 RCA cables due to the electrics put round everywhere. Seems to be a few burnt out wires like, auto door release wires? Wires that run through rubber grommet in floor out to brakes (I guess), they've been cut. Annoying but not critical

Not alot of choices for decent front 6 1/2" coaxial woofer install in these cars is there. Kickpanel is out of the question. Not cutting into that structure plus, too close to wiring that runs up into dash on drivers side. Dash well, obviously out too. Not cutting into that no way! I've pretty well decided on the front door trims just below door release handle. Just have to sort out some kinda enclosure? More rootin round Fitted here, @ least there's plenty of leg room & sound won't be muffled.

Will be using custom Sony tweeter covers for both front & rears. Rear ones sit over rear pillar interior cover & fronts will sit in a custom dual tweeter enclosure that sits behind rear vision mirror, kinda toward back. See pics:

Cut out spot will be in flat section, below door handle release:



This is the front tweeter enclosure. Middle hole will be dummy. Needs fabric cover. Still to cut out centres for larger tweeters:



Rear tweeter covers that sit over pillar panel:

 

Here's some pics of the rough door speaker cut outs. Tryin to find time to work on this car is really hard bugger it:

 

Here's some pics of the coaxial installs:

 

Hopefully have the custom boot lining fitted out today. If I get all other stuff I need doing outta the way lol.

Now, twin converters have arrived but won't be getting them sent to me until the mixer venturi is enlarged. It currently is a 325 cfm & will be bored out to a 400. Been advised not to go any bigger & if I recall, bigger is not always better with LPG. You have to keep it to a sensible size to flow the LPG efficiently. Jetting can be bigger though I'm pretty sure?

I have sorted the converter bracket out but don't wanna order hoseds etc til' I fit converters & see what joiners I'll use. No hurry really as I wait for the fabricated parts from OS so, really just planning it all @ present.

Sound system is done & so hopefully boot will be completed & I'll wack some pics up then

Slow progress but I can't do anything about it really as I'm @ the mercy of workshop & OS supplier A moment.

Won't be until I have the manifold & stand alone ECU that things can really hot up. Although, once I have the LPG gear here, progress will @ least start to happen on the intake side of things.

I can't really bother with IC & piping until both intake & exhaust sides are fitted out. Obviously due to measurements/accuracy. But I know the IC I will be getting. It'll be have about a 3rd more flow capacity than the one originally on car & sit practically in the same possy I just hope it's a good quality one as it's off EBay but seems OK......

 

Hey thanks for posting pics of coaxial install