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Retrospective build thread - Supercharged Lexus 4litre V8 in NA
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Heres a build thread on a swap that was completed a while ago - so this should be quick and hope anyone else considering this motor can see that its pretty damn easy to do - maybe not 60 degree v8 easy (easy being relative) I decided to put this up as I am starting my second v8 Miata swap - so this was the first I did
Take one 1991 Eunos Roadster (JDM NA Miata) that was a bit ratty Attachment 6419 Attachment 6420 Add a Lexus 1uzfe 90 degree dohc V8 engine, add a supercharger and a manual gearbox to it - strip out all the weight in the car - nothing under the dash and have fun turning tyres to smoke - it did run a 10.8 on the 1/4 and has been sold Parts List Lexus 4 litre v8 Attachment 6421 w58 gearbox Toyota hilux clutch Toyota 3CT flywheel Rear Sump from CRS in Australia Supercharger and manifold Megasquirt ECU and msd coils Racing concepts rear end kit (Ford 8.8 and blah) Shifter turret extension on w58 box custom gearbox mount tein coilovers ferrari f355 brakes custom headers and exhaust to fit walbro external pump mounted where the fuel filter normally lives - oem pump as lift pump to inline pump Work done in summary Engine bay corners trimmed out and squared chassis rail lip removed and welded closed to gain clearance subframe shimmed down 8mm to gain bonnet clearance - anything more needs a longer steering shaft and will start messing up susp geometry seam welding done on inside of doors so after the engines out - lip removal and sump placement to get a basic idea - the lexus is a wide engine for sure Attachment 6422 Attachment 6423 Attachment 6424 lip removal Attachment 6425 Attachment 6426 Attachment 6427 did this all around to gain some clearance |
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Then I got the brakes and susp and rear end sorted out
std rear claipers but on bigger discs Attachment 6416 Ferrari F355 Brembos on bigger discs up front Attachment 6417 the racing concepts rear end kit - this is not the final location of the diff - the sideshaft angle was horrendous - I corrected it a lot later on but this is only pic with a flash Attachment 6418 |
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The engine and gearbox became friends
Attachment 6414 diesel flywheel - incredible engine smoothness Attachment 6415 I went through 4 of these gearboxes - I think the adapter was off centre and putting excess strain on the input shaft |
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then dropping the engine in and checking clearances all around
Attachment 6412 the subframe hasnt been touched yet Attachment 6413 here you can see the oem mazda mount location for reference |
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Heres some pics of the modded stock front subframe
I used the oem lexus engine mount "ears" I just swapped them over from left to right as they then angled forward if you look at the subframe pic and look carefully close to the steering rack you will see the plates where the motor bolted to - I used no rubber in the mounts on either engine or gearbox - 100% solid and not a vibration to worry about (Thanks Lexus) Attachment 6410 welding in the reinforcing on the subframe Attachment 6411 |
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so then after a bit of frustration, swearing etc
this then started to take shape Attachment 6398 Attachment 6399 Attachment 6400 Attachment 6401 then i trimmed the bonnet Attachment 6402 Attachment 6403 made a little cover from a cardboard template - had that layed upo in carbon fibre Attachment 6404 added some seats and rollbar Attachment 6405 and job done - well as done as it could be Attachment 6406 Attachment 6398 Attachment 6408 Attachment 6409 would i do it again ? yes and busy with it this time around - it must look oem...... |
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