Not sure if this'd be worth doing? Spec lists

Mon Oct 31, 2005 1:49 pm

Does anyone reckon it might be helpful if those of us who have gone / are going the FI route could list out the mods to their cars along the lines of:

Engine (inc approx manufacture date and compression ratio)
Exhaust manifold
Blower
Intercooler(s)
Engine management
Oil feeds etc.

Might provide an 'at a glance' reference for anyone thinking of doing such a conversion?

Just a thought anyway.

Mon Oct 31, 2005 2:28 pm

Can tell you my intention, but havent even bought the car yet, lol

Cossie T3 turbo
524 Manifold

ERL MF2 injector driver
Cossie intercooler

Not actually planning any other changes at all at this stage, so anything ive missed that i need to have, shout now!

Mon Oct 31, 2005 2:31 pm

Hi Alex

I think that's an excellent idea as the question gets frequently asked and you must get sick of repeating yourself, I know Toby is fed up with people asking about the M30 coversion and the "what do I need for a 2.7 conversion?" is almost a daily feature.

Someone needs to get these written down and articles put in the tech section.

Mon Oct 31, 2005 3:19 pm

It would be a great Idea to put post like these as stickys. Well a broken down one leting us know the best way of turboing(components), buying (what to look out for), etc...

Mon Oct 31, 2005 3:24 pm

An E30 Cookbook, with all the ingredents listed.....mmmmmmm

Chapter 1: 2.7 conversion
Cahpter 2: Engine transplants
Chapter 3: Turbos and supercharging
Chapter 4: Are you crazy ??????

Available now at all good book stores...........

Mon Oct 31, 2005 3:29 pm

It needs something like that.

Mon Oct 31, 2005 5:15 pm

Chapter 4: Engine swaps...

Mon Oct 31, 2005 7:28 pm

Fair enough

Here's my list:

Engine (inc approx manufacture date and compression ratio)

1985 M20B25 which is the slightly higher compression version I think 9.5:1ish.
Rebuilt to standard spec without any compression lowering. Did have a head skim, but also has the thicker head gasket to compensate.

Exhaust manifold

2 off home made tubular manifolds with front turbo just above the engine mount and rear turbo pretty much where the coolant expansion tank was.
Home made down pipes in 2" diameter tube
Home made full exhaust system with balance tube in original position and standard size straight through back box.

Blower

2 off Garrett T25 turbos with following A/R ratios:
Compressor housing 0.42A/R
Exhaust turbine housing 0.48A/R

Intercooler(s)

2 off Ford Sierra Cosworth 2WD intercoolers. These are about 1/2 the depth of the 4WD ones but have pretty much the same frontal area. Supposedly they're good for around 280bhp each so hot air shouldn't be a problem on mine (I hope!)

Engine management

Emerald engine management using MAP sensor, crank position, TPS, coolant temp and air temp as inputs.
Running 6No. Peugeot Mi16 injectors (C45 - 50 bhp / cyl)
Vectra 2.5 V6 coil pack (no dizzy for me!)

Oil feeds etc.

Home made aluminium 'banjo' type arrangement drilled to accept oil pressure switch and 3No. M10 brake fittings, 2 for the turbos and one for the oil pressure gauge.

Other goodies
6No. direct to head throttle bodies in the hope of improving throttle response
Custom made air box to fit the TBs
Standard clutch

Mon Oct 31, 2005 7:42 pm

524td forged crank (re-ground and re-strenghtened)
Bored and o-ringed block
forged Pistons
verdi steel rods
full race Welded head with biggest valve
ARP studs head and crank
Turbo cam Z45
ppf tubular manifold
single tial wastegate (was recomended to use 1)
air reseach PT72GTQ turbo
3" downpipe then 4" exhaust where wastegate joins back in side exit
600x300x100 alloy intercooler
ppf custom intake manifold and fuel rail and injectors
msd ecu with 4 coils
tapped oil filter housing for turbo feed

at 28psi it will make 600+bhp on pump gas
and 700+bhp on race fuel

Mon Oct 31, 2005 11:10 pm

Engine (inc approx manufacture date and compression ratio)
M20b27eta 1986, b27 head ported and drilled for 25i cam, double valve springs, flat top pistons, C/R ???
Exhaust manifold
One off stainless homebrew 6 in to 2 in to 1, 2.5" system.
Blower
Eaton M90 supercharger,4 psi soon to be more?!?, home made 8" pulley
Intercooler(s)
Home made water injection filter side of charger.
Engine management
emerald m3dk, 42lb injectors, vauxhall coil pack
Oil feeds etc
Not needed
Other goodies
Relocated alternator, full front radiator, home made stainless induction pipes, modified volvo recirc dump valve, crankcase swirl seperator and custom catch tank