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turbo 4AG (4AG-TE) MK1 MR2 conversion

Old 09-07-2003, 11:55 AM
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Join Date: Sep 2003
Posts: 10
Default turbo 4AG (4AG-TE) MK1 MR2 conversion

Just ran across this message board- right up my alley!

I just completed a turbo conversion on a toyota 4AG motor. The engine lives in a MK1 MR2; as a result, everything needed to be done from scratch since no kit exists. (the HKS manifold only fits the AE86 corolla).

Some specs:
4AG-ZE block, (sold off Supercharger parts), 8.0:1 C/R, large port head
custom near-equal length manifold
2G Eclipse T25
Megasquirt EFI
Ford distributorless EDIS ignition controlled by Megajolt Lite Jr (my own design).
* fuel and ignition fully programmable
440cc Supra 7MGTE injectors
ford probe turbo intercooler
1G Eclipse BOV
255LPH Walbro Fuel pump

Recently Dyno'd it-

215 HP, 200 ft/lbs torque at the wheels, 15PSI boost.

we noticed the power getting choppy at the high end- turned out that my plug gap was too big. I should have more power after fixing my gap and doing a pull to 8000 instead of 7000 RPM.


Megasquirt on top (fuel), Megajolt Lite Jr on bottom (ignition) note on-board MAP sensors.

autocross trim. Exhaust now has a Dynomax where the straight section is- it weighs 15 lbs.
l8apex is offline  
Old 11-20-2015, 11:22 PM
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Join Date: Nov 2015
Location: Washington state
Posts: 1

I am planning on doing a turbo build here in the next couple months and was wondering what problems, if any, did you have with this build. also what specs are/were you running? (i.e. psi, power figures) Love the car, and the build looks amazing.
86deucedude is offline  
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