Hi from Down Under

BAD300 · Sep 1, 2010

Hi all,

Stumbled upon this full on site tonight when I was searching for alternative running gear for my car.

I am in the process of rebuilding a poor old 300E Turbo on LPG that seller roo-ted good

BAD300 said: ↑

This thread will be dedicated to my project long in the waiting. Alot of research. Alot of new ground work. A few performance forums attributed to get this far An excellent workshop found also. Big thanks to Roman (Pumpsh) who is nothing short of an inspiration with 300E's & their terribly under-rated performance potentials.

Will start with some pics in the next post of when I brought the beast home in January of this year.

To begin with. Bought this 300E from a disillusioned seller who allowed poor workshop to build the car & eventually poor workmanship & little knowledge led to destruction of performance built engine along with most of the running gear & turbo equipment to be replaced from scratch.

Hope this thread will be informative & maybe stir a little discussion for those interested in stretching the boundaries a bit

Below are some pics of the car when I brought her home in January. It was running LPG set up with only 1 convertor. Running a Garrett T03 highflowed to T04 specs. Pretty stock exhaust manifold I think off a diesel? Not sure now. Exhaust was anywhere from 2/14"-3" ike a dogs breakfast. All looked good but it was destined to blow up.......it did!

Purchased items & work to be done commencing last week:

Running Gear:

Low km M103 3.0L in VG cond' left stock 9.2:1 comp (aid in spool time)
GT3540R .63 A/R billet comp wheel; ceramic bearings (all lowering spool time)
45mm external wastegate
BOV
Microtech MT8 timing only ECU
3" turbo back mandrel exhaust
Larger FMIC & fabricated mandrel aluminium piping to suit
Custom Inlet inc 3" bell end runners & Boxy Plenum
Custom Steampipe Exhaust Manifold with 45mm external wastegate
Reco'd 400 Mixer (older style were better) & Twin Vapour/Convertors & larger lines to suit
Rebuilt Trans with shift kit & 2300rpm stall convertor
New engine Mounts
New Trans Mount
New Behl Radiator & all hoses
New Front Flex Plate......will add later any other gear I've forgotten

Boost will begin @ 10psi, then 12, then hopefully 14

Will be installing LPG primer sensor & oil filter between engine & turbo

Looking realistically @ between 260-290rwkw depending on boost I run? I was going for 290 solid but I feel @ this stage I would have to use .84 A/R housing to gain the top end needed I think? This would mean a trade off of more lag & less linear powerband.

Decided to raise the boost in increments when we, eventually do get to tune car Initially do a run @ 10psi using a 45mm external wastegate then @ 15psi @ see how she fairs & what hp we can achieve @ this boost. As I've said before, hp will be down due to small turbine housing but the trade off is quicker low down response so I can live with that

Also the larger comp wheel ensure large volume of airflow & counter the back pressure anyway. All in the set up @ this stage.

Also @ this stage I think I'll call it a day @ 15psi for reliability purposes more than anything. The LPG will work in my advantage in this area with it's higher octane ability however, this hp will be a big enough shock I think for the stock car including running gear, brakes, suspension per se.

The MT8 has to be made up especially & will be a few weeks wait bugger it. Hopefully there is enough to be done in the meantime with fabrication anyway?
May try 20psi but only once I see how car handles the bolt-ons first?

Below are some pics of the car when I brought her home in January. It was running LPG set up with only 1 convertor. Running a Garrett T03 highflowed to T04 specs. Pretty stock exhaust manifold I think off a diesel? Not sure now. Exhaust was anywhere from 2/14"-3" ike a dogs breakfast. All looked good but it was destined to blow up.......it did! :roll:

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