had my m20 dynoed

[iwantspeed]

So a member posted in here about a discounted rate for a dyno day
http://www.r3vlimited.com/board/showthread.php?t=250795
https://www.facebook.com/events/310165325736320/

big thanks to Jlieve
been trying little by little to get all the maintenance done on this engine setup.

engine specs

Intake

• · Stock air box
• · Upper snorkel removed
• · K&N drop in air filter
• · New intake boot
• · New throttle body gasket
• · Removed throttle body heater
• · Intake manifold wrinkle finish black

Head

• · Hot tanked and pressure washed
• · Head decked 0.06
• · Shot peened rockers
• · New inner and outer valve springs & keepers
• · New intake and exhaust valve guides
• · New intake and exhaust stem seals
• · All Valves lapped
• · Fresh Valve seats
• · Intake and exhaust ports have been enlarged to match the gasket
  
• · Wrinkle finish valve cover
• · .011 thousands snug COLD valve adjustment

Ignition

• · Ireland Engineering
• 8mm spark plug wires
• · NGK zgr5a - 5077
• · New Bosch Coil relocated to battery tray
• · New Bosch cap
• · New Bosch rotor

Fuel

• · New Fuel pump
• · New fuel filter
• · New rubber fuel hoses in the engine bay
• · Rebuilt and flow matched injectors by R/C engineering

Fluids

• · Castrol 20w50 oil
• · Prestone coolant/ Distilled water
• · Ate super blue brake fluid

Exhaust

• · Stock manifolds
• · New o2 sensor
• · Secondary o2 sensor bung welded in x pipe for a wideband gauge
• · Stromung cat back exhaust

Cooling

• · Mishimoto e36 m3 radiator
• · All new coolant hoses
• · Heater thermostat valve removed
• · Heater core valve replaced
• · Throttle body heater removed
• · Graf water pump metal impeller
• · New expansion tank

Electronics

• · Motronic 1.3
• · 173 DME-Stock chip 87octane stock injectors
• · New dme coolant temp sensor
• · New cluster temp sensor
• · New crank position sensor
• · New throttle position sensor
• · New impulse sensor
• · New o2 sensor
• · New alternator
• · New battery
• · C101 connector relocated to firewall
• · Dme o2 and fuel pump relay relocated to firewall
• · Volt meter added in the car.
• · 2nd ground strap added

Misc

• · Solid motor mounts
• · Solid trans mounts
• · No A/c
• · No Power steering
• · No Cruise control
• · No windshield washer fluid
• · All wiring coming out of the fuse box has been tucked in the fender
• · E30 m3 wiring covers on the firewall
• · Early model aux fusebox retrofit
• · Hid ballast tucked inside the fenders
• · Oil pressure gauge added

future
id like to replace:

• egr check valve
• fuel pressure regulator
• brake booster check valve
• e30 m3 battery tray wire cover

I drove down
they strapped her up

I installed the coil pick up wire for a tach signal


ready for the first pull

results
128hp
133 torque
average of three runs

[MR 325]

I'm not sure that maintenance items count as a mod list.

My question, what do you mean by port matched gaskets? The gaskets are bigger than the actual ports on the cylinder head. Do you mean that the cylinder head was port matched?

[iwantspeed]

I'm not sure that maintenance items count as a mod list.

My question, what do you mean by port matched gaskets? The gaskets are bigger than the actual ports on the cylinder head. Do you mean that the cylinder head was port matched?

wasn't posting a mod list just whats has been done to it.
and correct cylinder head ports were matched to the gaskets thanks for correcting that.

[SpecM]

EGR check valve?

Sent from my Vortex

[ForcedFirebird]

Where did he say "mods"?

Mustang Dyno will read lower than a DynoJet. Numbers look pretty normal for an m20 with mileage, except a little low when removing A/C and P/S.

[jlevie]

The A/F ratio looks a bit wonky. 13:1 would be much better. The shape of the curve (very rich below 4500) makes me suspect that the AFM may be off. But the high end is rich also, which could be a fuel system problem.

[iwantspeed]

The A/F ratio looks a bit wonky. 13:1 would be much better. The shape of the curve (very rich below 4500) makes me suspect that the AFM may be off. But the high end is rich also, which could be a fuel system problem.

They did not use a air fuel measuring device.
It's defaulted to 7.3 when it's unplugged

[LJ851]

^Why is the left side of the graph labeled "AFR" and scaled to match, then?

[iwantspeed]

^Why is the left side of the graph labeled "AFR" and scaled to match, then?

I'm pretty sure that's just when they do have the dyno setup for measuring afr
Notice at the bottom of the graph that there a flat line at the 7.3 afr ratio and stays flat through out.

[slippery]

Yeah, that looks like torque if you look at the values at the bottom.

J