I thought I would create a thread to take advantage of the collective experience on K20a.org. I have a similar build thread on LotusTalk.
My build will utilize a JDM K24a RBB-3, an EFR 7163 turbo, RBC intake manifold, Skunk2 70mm TB, and custom exhaust manifold. Intake cooling will be air to water. The Haltech 1500 Elite will be used for engine management as well as controlling electric pumps for the engine and charge A/W cooler. The plan is for a flex fuel set-up with ID 1300xds injectors and all the appropriate sensors and safety controls including individual EGTs. I could go into a lot more detail if anyone is interested but you get the gist.
My goals are a street/track car with great drivability. We are keeping the K24 stock other than upgraded oil pump (at least for now
) so boost will be limited in the low RPMs to avoid bending rods and such. The Haltech 1500 has multiple boost control strategies and the EFR comes equipped with an integrated boost control solenoid, wastegate and recirculation. We should have a lot of options. It is also a pretty compact set-up which makes things a lot easier for an Elise build.The HP will be whatever can be achieved with comfortable margin of safety given a K24 with stock internals. My builder has extensive experience tuning K-series so no issue there. My plan is to leave it to him but I must say I am more than a bit excited after seeing the results of other K24 builds with low boost and stock internals.
My Elise's had a REV400 SC 2ZZ and we will be carrying over the Toyota e153 tranny. It might seem an odd decision but it turns out there are e153 to K series conversion kits readily available for MR2 swaps. My e153 has a close ratio KAZ gear set with a LSD and 3.9 FD. It is pretty much new with beefy axles so why the heck not. I haven't really come across any Lotus K series turbo e153 builds so maybe it's something unique.