Got a power plot? Lets see it then :D

[Turbo-Brown]

Find it quite interesting seeing what mods give which results so if people are willing, it'd be cool to have them on display for all to see together with a breif outline of what's been done to the engine.

Of course no two rolling roads are alike in what they give as a readout, but they're probably not too far apart.

To get things rolling, here's mine:

Engine:
Early 9.7:1 compression M20B25

Mods:
Two Skyline turbos
6 throttles
Tubular manifolds
Twin 2" exhausts
Two cossie 2WD ICs



Cheers!

Alex

[maxfield]

Does it matter then engine or car?

heres a s14 with 2.5 cams head work c/f airbox dta and other goodies not bad for n/a 4 cyls

[blingsta]

And off with mine.. -

Later 325i m20 engine, stock
garret t3 cossie turbo,
flipped m20 manifold with t3 adaptor
M/s
volvo 940 intercooler
single 2.5" vortex zaust

Gives me 203BHP and 237 Torque.

[Turbo-Brown]

Does it matter then engine or car?

Reckon keep it E30 or engines installed in E30s wherever they come from to give people an idea of what's possible

[kam]

Although techincally not an E30, this is my engine in my E21. It has E21 323i bottom end, M20 later head, custom machined pistons, standard cam, t25 turbo with 360 degree bearing, comp ratio is 7.1-1 (i think), 3" zorst all the way through, setup running KMS efi with coil pack, Demon Tweeks intercooler and lots more. This power run was done after the efi was setup and engine rebuild, pulled at 5 psi held. I still need more things doing to it before upping the power, but this is the baseline figure.

[Turbo-Brown]

Erel, my mate has popped your graphs up on the snood so here they are

Blingsta's graphs:

Power (BHP)


Torque (lbft)


Wonder what the dip in the torque is on it's way up.

Will be interesting to compare to your results when you get your new blower

[blingsta]

Cheers for that, .. im gonna look at buying Ants old turbo he had on his car, its apparentlt 1cm squared bigger than mine on the hot side.. see if that makes a difference?

[Turbo-Brown]

It's great that you're getting power runs done inbetween mods, shows the benefit of what you're doing each time

[Andy335Touring]

A really old one from me, at the time it had Cam/head work/chip

BTW it's an M30

[Toby_Unna]

bloody hell Andy, take it that was pre-emerald?

it'll be doing a fair bit more than that with the high comp bottom end and twin tb then

[Turbo-Brown]

Blimey, love the wall of torque Andy

[billgatese30]

christ on a bike................does it only run on vaopurs untill 800 rpm andy that tourque curve is very impressive

[Andy335Touring]

bloody hell Andy, take it that was pre-emerald?

Yeah, it was running with a Super Chip.

it'll be doing a fair bit more than that with the high comp bottom end and twin tb then

Touch wood mate

[Andy335Touring]

Blimey, love the wall of torque Andy

M30, nuff said

[mattG]

Hears mine std m20 2.5 megasquirt & nos on 91 octain

[Turbo-Brown]

Why the low octane Matt?

[DaveD]

sorry its sideways..if someone knows how to flip it



chippeduk's rr
re mapped
pipercross intake
bbtb
magnex 6 branch
scorpion bbox

[DaveD]

so we can't mention his name then ...............................jason somewhere in Bromsgrove in the UK

[mattG]

Why the low octane Matt?

it was all they had in the nearest station and i was sweating

approx. how much differance would it have made if i used 99 ?

[Gunni]

None without tuning,,

[mattG]

None without tuning,,

it was mapped on tesco's 99

[Gunni]

If you where able to run 91oct then the timing wasn´t advanced as much as possible for max power, it it had you
wouldn´t have been able to run 92 on a 99 setup, with 99 in the tank and advanced timing you´r looking at easy 10hp more over the rev range, as timing could be advanced alot more, and definitly some free power picked up,

lets say it was tuned to the max on tescos 99oct, then surely either it is of lesser octane then advertised or the 92 is of alot higher octane then advertised as well,

[Turbo-Brown]

Thinking about it, isn't the lowest octane available in the UK RON 95?

I've never seen the point in having your car mapped on the highest octane available cos it'd be just your luck to end up out the arse end of nowhere on a hot day with great roads to drive but a tank of lower octane gas so you can't give your engine the exercise it deserves.

IMHO, it's wise to use what's available everywhere.

[mattG]

may be was 95, i just know it was not 99 which i always put in,

anyway got ants old turbo and most bits to finish, so remap is hopefully soon on the cards

[gareth]

time to resurrect an old thread methinks! Was looking to see hom mine compares with Andy335tourings wall of torque and it's not bad

spec wise, it's got a free flowing exhaust and the compression increased from 9:1 to 10:1. ignition etc are all unchanged at present.

the LPG system is a single point 37mm (iirc) mixer, OMVL R90/e vap, leonardo ecu.

the engine (M30B35) should put out about 210bhp and 210 lb.ft as standard...

On petrol with mixer venturi removed - 221 bhp, 238 lb.ft

200lb.ft at 1800RPM!!

On petrol with mixer venturi fitted - 204 bhp, 223 lb.ft


On LPG with mixer venturi fitted - 183 bhp, 216 lb.ft


A good result considering it's a 21 year old engine

[Gunni]

Here is the 2.8 I made.

M20B28 8:1 compression
60trim TCD T4 turbo
log manifold
1.1bar boost

WHP


FWHP

[S38B38]

Here is the 2.8 I made.

M20B28 8:1 compression
60trim TCD T4 turbo
log manifold
1.1bar boost

WHP


FWHP

And the car the engine is in now ,, was really flying

[stonesie]

Home made (cobbled together) M20 B28

CatCams 273/273 camshaft
raised compression to 9.7:1
BBTB
Ultrasonicly cleaned injectors
Standard B25 air box/paper filter/exhaust bar the magnex backbox
Standard head
1500 miles at the time of testing.



206 bhp
203 Lb:Ft at the crank.... More to come