So, Tuesday (12th) marked the one-year anniversary since I took my first drive out in my "completed" conversion and I figured that I would mark the occasion by giving a quick update, relaying my thoughts on what it’s been like to live with since then. My overall opinion - I love it !
A random pic of my Supra, just because
I love the noise and it’s almost intoxicating when going through tunnels or under flyovers with the roof off ! The throttle response is near instant and torque is ever-ready, so zipping in and out of lanes and getting up to speed around town is never a problem. Although my Supra never felt front-heavy, with this engine in in feels even more balanced, especially in the corners.
Not everything is perfect though and (in my opinion) these imperfections are mainly down to the Soarer’s transmission and my use of the NA diff.
Using the A341 transmission from the Soarer, it doesn't come with a dedicated manual mode, only a Normal/Power mode (which holds the gear for longer), so it makes dyno-ing a lot harder as there's no easy way to lock the transmission in 3rd. The only ways to do it are to use a Suprastick (or similar) or to mess around the with ECU wiring. With my current setup (Soarer transmission, Supra NA diff and a tyre/wheel combination that is within +0.3% of the Soarer's stock tyre/wheel size) my speedometer is approx. 10% out. For me to do 40 MPH, my speedometer has to read 44 MPH; not the end of the world but does take some getting used to. If I was going to stick with the A341, then I would hunt down a V8 Soarer diff and go from there, but as I'm swapping it out, I'm not fussed.
Another thing to bear in mind is, with the 1UZ being considerably lighter than the 2JZ, the front of my Supra now sits at least an inch higher at the wheel arches. I do believe that getting hold of some adjustable suspension will resolve the issue – however it is not something that I have thoroughly looked into as yet but it is on my “To-do” list.
So what’s next? Well, I've got a number of upgrades lined up for what I'm calling "Phase 2" and I've already made a start by fitted a Suprastick and paddle shifters - they are now working as expected . The Suprastick just needs mapping and fine tuning and then it's all sorted . The plan is to up the torque and power a bit so I’m now in the final stages of planning how/when to swap the current transmission/propshaft/diff/brakes combo out for the ones I’ve been stockpiling/building for the past year. After that, it’ll be an ECU swap (I’ve narrowed it down to 2 choices), larger injectors... but more on that at a later date, as they'll come under "Phase 3" .
In summary, I’m REALLY glad that I carried out this conversion and anyone who is considering it, I would say go for it ! In my opinion, get hold of a Soarer and strip it for everything you need, but as I said, that's just my opinion. If you want a 1UZ with VVTi, then a LS400 is the way to go.
Finally, I realised that I never put up another video, so here's one from the RWYB day at Santa Pod that I attended in May:
As that was my first time running up the strip, I spent each run trying out different settings (OD on/off, Normal/Power mode) so my runs weren't the fastest, but I have something to go on and compare to, once I’ve carried out my “Phase 2” upgrades .