xM Series Engine Variants

[paradox616]

Power:
306.9rwkw @ 16psi (with boost leaks)

Engine model and generation:
MA71 Supra 7M-GTE (89+)

Top End Modifications:
Rebuilt head
3 angle valve grind
brain crower valve springs
reshimmed
stock cams
Cometic MLS 74thou headgasket
arp studs @ 80ft/lb using the correct lubricant

Bottom end modifications:
Stock block rebuilt
shot peen'd rods
new cast pistons
precision balance
arp mains bolts
arp conrod bolts

Forced induction:
T61 turbo
gizzmo msibc boost controller

Management:
Haltech e6x
Haltech tripple channel ignitor
Stock coils
ngk coppers @ 28thou gap
walbro gss341 fuel pump
drilled J pipe

Fuel used
BP Ultimate

Intake:
600x300x80 front mount

Exhaust:
3" turbo back, 2 straight through mufflers
3" magna flow cat

Driveline:
W58
exedy HD cushioned button clutch
4.3 LSD
__________________

[boxh34d]

Engine model and generation:
MA71 7MGTE- Late model block, early crank.

Top End Modifications:
Rebuilt head with match ported stock manifolds, light clean up of ports, and (andrew_mx83) adjustable cam gears.

Bottom end modifications:
Rebuilt with 0.5mm Probe forged pistons (final comp 8.6:1 IIRC) cometic HG.

Management:
Adaptronic with ECU controlled boost.

Fuel used:
98RON.

Forced Induction:
ETS Highflow CT26 with T04B V trim wheel.

Intake:
Enclosed pod filter, with cold air feed, Group A supra cooler and 2.5" pipework, aftermarket ( non leaking ) BOV.

Exhaust:
2.75" divorced dump pipe, with wastegate pipe joining about 15" down stream, 3" system with cat and straight through muffler.

Driveline:
R154 man, excedy HD press plate with organic disk.

254kw & PSI 001.jpg
254kw & AFR 001.jpg

Green is previous best with with cams set to zero, and the wastegate control running out of duty cycle so hence boost tapering off up high.
Red is with exhaust cam retarded 4 deg, and no changes to boost control, with the boost naturally holding better in upper RPM. More fuel added due to wanting to ping slightly, and if ignition advance removed, power dropped.

[mikael_7m]

Engine model and generation:
7M-GTE 1989 in MA70 (210,000km)

Top End Modifications:
OEM Headgasket and Aisin bolts

Bottom end modifications:
None

Forced induction:
Stock CT26
Running 10psi via manual bleed valve

Management:
Stock Factory ECU

Fuel used
Shell V-Power

Intake:
M's K&N filter

Exhaust:
3" From turbo-back

Driveline:
R154
Supra 3.7:1 LSD

[mikael_7m]

Engine model and generation:
7M-GTE

Top End Modifications:
Rebuilt Head with ARP studs and Cometic MLS

Bottom end modifications:
83.5mm Probe forged pistons, Eagle rods

Forced induction:
57 Trim CT26
Running 16psi via Blitz Dual SBC

Management:
Stock Factory ECU with 550cc Injectors, Lex AFM, AFPR, Walbro 255

Fuel used
Shell V-Power

Intake:
Simota filter

Exhaust:
3" recirculating downpipe, 3" cat-back

Driveline:
R154
Supra 3.7:1 LSD