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v8ian Posted a lot Posts: 3,765	Lexus Soarer,v8ian @v8ian
	Dec 14, 2008 22:01:59 GMT Select Post Deselect Post Link to Post Back to Top
	Just feeling the water here, Lexus 4.0 v8, I'm thinking possibly upgrading to a Lexus Soarer Engine, ive had a nose around Lextreme, and the soarer engine seems to fit the bill, I have gone for the Soarer over the is400 st its got a rear sump, kits to fit a Supra w series box exist, which is good, especialy as I use this box allready, Good points, Strong as fook, 6 bolt mains, Forged crank, will go to 8.5k without touching bottom end !!! The Popular choice seems to be forced induction, unfortunatly I don't think thats an option due to space restrictions, So the options seems to be fit my Jenvey TBs and Emerald management, and go from there, perhaps a set of verneirs to wake up the cam timing, and a good set of exhaust manifolds as the standard are terrible, Am I being ambitious looking at 350hp. The next question is I have a IS200 6 speed box sitting in the garage, Ive also been told they are not very strong, but as yet have failed to find anyone who has broken one??,
	Last Edit: Dec 14, 2008 22:02:41 GMT by v8ian Atmo V8 Power . No slicks , No gas + No bits missing . Doing it in style. Austin A35van, very different------- but still doing it in style, going to be a funmoble

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Lewis Posted hell of a lot Got 8 cylinders, uses 'em all... Posts: 7,625	Lexus Soarer,Lewis @lewisk78
	Dec 14, 2008 22:33:32 GMT Select Post Deselect Post Link to Post Back to Top
	Standard internals will just about hold together at 8000RPM, we found in some instances certain elements of the valvetrain would start to fail at sustained operation over 7000RPM though......(can't recall what - will see if I can dig it up tomorrow - maybe valve retainers). Great engines but expensive parts and even more expensive aftermarket stuff. Fortunately, due to the popularity of these engines in Australia etc, they are coming down a bit. This should give you some ideas! 170KW = ~230BHP, 220KW = ~300BHP, 250KW = ~330BHP....... Should cover most bases!


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Lewis Posted hell of a lot Got 8 cylinders, uses 'em all... Posts: 7,625	Lexus Soarer,Lewis @lewisk78
	Dec 14, 2008 22:39:03 GMT Select Post Deselect Post Link to Post Back to Top
	Thor Racing sell a kit to take the 1UZFE out to an R154 box too Some other snippets: The 1UZFE is the all aluminum alloy DOHC V8 issued in LS400's amd SC400's by Lexus. Not to be confused w/the 2UZ truck V8 which is an Iron block. They are approx 40 lbs lighter than the 2JZGTE and produce 280HP/300Ftlbs of torque in stock form and will push 320HP with breathing mods alone (port work, induction and headers). Its an absolutely brilliant engine, easy to work on and can take significant boost without requiring internal mods. I looked for two engines for a good 12 months before I found three in a breakers in Nantwich who told me he couldnt sell them as there was no demand, these engines it seems never go wrong !! I simply did a compression test on mine, dropped the sump to have a look, replaced the cam belt, cam belt idler gear ( £80 each ) and the water pump ( £50 genuine part) and am expecting a good 300 bhp as standard with a better exhaust and decatted and 450 bhp when I get a chance to bolt a couple of Garrat T25R's and a simple additional fuel injector system as a piggyback when on boost. I built a Cobra with a BMW V8 first and I actually prefer the Lexus engines to work on.......... Try taking a look at www.lextreme.com for everything to do with these wonderful engines. ‘The initial build left me with a naturally aspirated 1uzfe in the engine bay and it left me wanting more power, so after 12 months of driving. I decided a turbo would do the job and hunted one down on ebay. The standard computer caused a lot of detonation when the turbo was added, so I ended up getting a Wolf 3D computer along with bigger injectors and a fuel pressure reg. She’s running on 12psi and putting out around 320 at the rears for now. I’d like to get it tuned properly in the future and squeeze out a few more horsepower.’ The 1UZFE engine will take 500 bhp boosted if you get the mapping correct, remember it is 250 bhp to begin with. They have a strong forged crank and it will cope with 800 bhp without problems. The block will also take 800+ bhp and as I have mentioned before they have 6 bolt mains on all the main caps. The connecting rods will take 500+, rews over 7700 continuously will kill them some maniacs in NZ have tested this. The pistons is the weak point, they do not deal well with detonation so correct mapping is essential. actually there are twin dizzy's in these normally but as I would run the engine with an OMex there would be no need for them. in NA form I think with the proper amount of cam work you can get upto 400hp and if you get the heads done and fit some nice arias pistons and maybe pauter lightweight rods, you'd be looking at much more at much higher rpm. dyou shouldn't worry about the cranck it's a steel 6 bolt/main jobby which copes with 850hp twin turbo's on a stock lower engine block.
	Last Edit: Dec 14, 2008 22:43:02 GMT by Lewis

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Lewis Posted hell of a lot Got 8 cylinders, uses 'em all... Posts: 7,625	Lexus Soarer,Lewis @lewisk78
	Dec 14, 2008 22:43:39 GMT Select Post Deselect Post Link to Post Back to Top
	Did see this too, not sure if it's the case: The Lexus uses the A340E autobox. On the Mk3 (single turbo wedge shape pre-94) Supras the A340 autobox and R154 5-spd manual box have the same bolt patterns so very easy to swap over. It may well be that the Lexus A340E uses the same bolt pattern as the supra A340, in which case the R154 will fit and that's a pretty tough box with a good aftermarket selection of clutches to suit varying power levels.


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hongkongphooey Posted a lot '78 Beta spyder,'77 180B Wagon'75 Celica,'72 Corona. Posts: 3,238	Lexus Soarer,hongkongphooey @hongkongphooey
	Dec 15, 2008 9:26:02 GMT Select Post Deselect Post Link to Post Back to Top
	Dec 14, 2008 22:39:03 GMT Lewis said: Thor Racing sell a kit to take the 1UZFE out to an R154 box too You need deep pockets for it though!
	'75 TA22 Celica sr20det

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