5E-FTE Upgrade

After 4 months of driving around with the 4E-FTE engine… we decided that we need to “improve” again on what was already very good. And since there is no replacement for displacement (or so they say), we put in a 5E engine instead, paired with a TD04L from the Subaru WRX. That way, we will have a good mix of low end torque from the increased cc and good high end power with the bigger turbo.

Since I was at it, might as well put in a set of Wiseco forged pistons for added reliability. These should be able to sustain some high boost and resist to some hard engine knocks without breaking apart. In actual fact, it was supposed to be a budget build, and no expensive items like forged pistons were planned for. UNTIL, the machine shop broke my stock 4E pistons while pressing out the wrist pins! @$#%$# HOW DID THEY EVEN DO THAT?!?

While rummaging through my store, we also managed to pull out some Mitsubishi front mount VR-4 intercooler and some blitz intercooler piping that suits the Starlet body just fine. We had to custom make a couple of charge pipes, but that is easy enough with help from our friend Sam who is a superb TIG welder with stainless steel materials.

Custom metal head gasket was also ordered and installed at the same time. The standard head gasket was some sort of graphite sort which does not look at all impervious to high boost at all! The new Multi Layer Steel (MLS) one definitely looks like it will stand up to the task

MLS head gasket for my inline 6 starlet

HAHAHA, GOT YOU! That was for the 2JZ!

Here is the actual one.

Engine was also refreshed with all new ACL bearings for the mains and conrods with specs that were just a little bit looser than stock. We hope to be able to make some power with high boost on this turbo.

On the engine management side of things, we added in a piggyback unichip to control both the ignition and fuelling. It got rid of the speed limiter in the JDM ECU, and gave control to the much needed extra fuel on the higher end of the rev range. Granted we had forged pistons in there, but we sure didn’t want to have to drop out the engine again and have to find out we melted one of them!

After everything was done and put together, surprisingly, there was virtually no lag in this turbo at all. We are able to get full boost by 3000rpm and the car is a blast to drive. I guess, 800kg is a great advantage when it comes to short distance sprints. Perfect for everyday city driving use, and good fuel economy.

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