thomas4age
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| posted on 22/6/07 at 10:59 PM |
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Twin supercharged Lexus V8 taking shape.
Hey all,
I've aquired another importand set of parts to build a
Twin eaton M45 superchared Lexus 1uzfe V8 32v monster of an engine.
and although this would not strike as locost to some, it didn't yet cost big money.
I have the
Engine, 480 euro's (JDM =2000)
4 laminova IC cores 80 euro's (125 each)
2 ex mini cooper S eaton M45 superchargers 220 euro's (350 each)
1 cut down intake manifold 30 euro's to mill flat
the desings ready to CNC the core housing (took 3 months)
the (prices) is what they normaly cost in holland so it's pretty locost sofar, and exept for the ECU all bigbuck parts are in.
the pully ratio is so that the SC's spin at top RPM (14k) at 6200rpm engine rpm all on stock parts! +/- 0.7/0.8 bar od overboost
the piece of wood that says 59.5cm to sump bottom is 0.5cm under the bonnet line, everything needs to be lower than that!
the engine as I bought it
 
1uzfe engine
the manifold on the engine
 
intake manifold cut down
Twin Eaton M45's
 
Mini Cooper S, eaton M45 Superchargers
The intercooler cores
 
Intercooler core detail
The core housing desings
 
IC core housing drawing
Grtz Thomas 
[Edited on 22/6/07 by thomas4age]
[Edited on 22/6/07 by thomas4age]
If Lucas made guns, Wars wouldn't start either.
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R1 STRIKER
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| posted on 23/6/07 at 02:27 AM |
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Looking good thomas. Is this little lot still going in a GD T70? If so I assume you'll be at le mans in that next yer and not the striker!!
Keep us up to date with progress.
Ben.
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thomas4age
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| posted on 23/6/07 at 03:18 AM |
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Hey Ben,
good to see you've finnaly got some sence and bougth a 1600cc 20v engine whehhehee
Yes the lot is still supposed to go in that chassis, but it will probably take a good few years before that's ready. and then still I first need
to find a new home for the striker to make room for the euurhm Large T70 4 by 2 meters..... half a meter bigger then the strikers footprint on all
directions. whaaaaaa!
just make sure you'll get to le-mans 2008, 2007 was altough wet very very funny!
grtz Thomas
[Edited on 23/6/07 by thomas4age]
If Lucas made guns, Wars wouldn't start either.
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R1 STRIKER
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| posted on 23/6/07 at 09:58 AM |
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I'll be there next year. If I get time i'll post a couple of pics of the new build this week. Still very early days but I now have a very
well stocked parts store so shouldn't take too long when we get going. At worst, a friend of mine signed up to the caterham acedemy for next
year. Kit should arrive in early december so we could end up in that!
Ben.
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ChrisGamlin
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| posted on 23/6/07 at 04:39 PM |
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How muh does the engine weigh Thomas?
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thomas4age
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| posted on 23/6/07 at 08:59 PM |
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I haven't weighed it up yet cause I can't be bothered to take it of it's stand vor that alone,
but lexus lists it at 119kg with intake system, so that's not to heavy. when it's time I'll take it of the stand to measure up the
flexplate and weigh it on the scales.
but ad twin M45's in my case and I'l be up about 15kg, but they will make up for that in power no doubt.
Good going Ben come on and show us what you've got!
grtz Thomas
[Edited on 23/6/07 by thomas4age]
If Lucas made guns, Wars wouldn't start either.
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ChrisGamlin
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| posted on 24/6/07 at 11:08 AM |
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That is very light for a V8 if it turns out to be correct, seems a bargain way to big power as well.
Do you think those superchargers will be sufficient though, thinking that they came off a car where one produces ~160bhp, are two going to be enough
for 400+ ?
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bimbleuk
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| posted on 24/6/07 at 12:32 PM |
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Chris - The Mini's are able to push near 200BHP on the standard M45 superchargers (the more powerful models have uprated rotor material). So i
would think 400 BHP is achieveable.
Ben - My under chassis exhaust manifold is spare now and I would probably sell my current 5" silencer too if that was of use?
Thomas - Jealous already of your latest project as the GD T70 has had a lot of engine mapping done at the garage I'm using. More specifically
the LS7 engine based kit. If only I had the space, time and money I'd do one myself!
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thomas4age
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| posted on 29/6/07 at 06:29 AM |
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Hey all,
260hp is whats the absolute top in terms of flow, on a single stock 5th Gen M45. just is the 1uzfe head probably won't flow that good when
stock.
The uprated material you talk about justin is the ceramic coating on the vanes, there's black and silver, Both Gen 5 though the black is the
latest version. those are what I have.
anyway 400hp would seem adaquate to say the least, I know MR have been involved in the LS7 set-up brilliant work.
Just have to sell my sylva striker first to make room for the new chassis
Grtz Thomas
[Edited on 29/6/07 by thomas4age]
If Lucas made guns, Wars wouldn't start either.
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DarrenW
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| posted on 29/6/07 at 11:37 AM |
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That is going to look fantastic. Id be tempted to skim the top of the inlet manifold down to remove the lexus bit and make a Lola plate for the top -
or something along those lines.
With tubular manifolds etc it will be a work of art. Great project. Cant wait to see the progress posts.
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thomas4age
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| posted on 30/6/07 at 01:54 PM |
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The top-end of the manifold will not be used on the engine, a complete new topintake has been desinged which takes the intercoolers. that will be a
flat piece of alloy 18cm by 42cm big on which I can engrave anything I want.
hmmm open for options!
ps Got a alternate alternator yesterday which saves a lot of room for the SC on the lefthand side of the engine.
it has become a block hugger below the exhaust system now! yippie first problem solved.
grtz Thomas
If Lucas made guns, Wars wouldn't start either.
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thomas4age
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| posted on 11/8/07 at 08:49 PM |
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update twin supercharged 1uzfe
after setting up my new garage toy I thought I'd have some play with making up a few mountening brackets for the lefthand side M45 today (girls
out with friends..... whatelse would you do?)
anyway I managed to make the first smalltime c**kup on the SC's I have made the vertical mount, but without having the outlet flange on the
supercharger, (only the carbboard cover is on now) the flange will be 6mm thick so the mount is now 6mm to short... ah well cut and shut will probably
solve that. otherwise it might prove usefull on the other side.... Oh jolly I need to do another one....
it's not fully supported on it's own yet, because I didn't have the time today to get the pulley's lined up perfectly. so once
that's done using clamps I'll weld the 2 outlet mounts up to the horizontal bar which is allready on the engine.
just to make an excuse for the piccie's, this is the first all by myself purpose made weld EVER!, I doesn't look really good, but they at
least stick.... (who was that mr silicon orso?)
 
M45 semi-fitted left side
 
leftside eaton rear vieuw
Grtz Thomas
ps had a drive in a LS1 powered cobra this week, and only now am I beginning to understand what I'm actually building that stuf is very
quick!
[Edited on 11/8/07 by thomas4age]
If Lucas made guns, Wars wouldn't start either.
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gezer
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| posted on 11/8/07 at 09:00 PM |
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No wonder we're fighting the arabs,
Thomas is nicking all their petrol, 
I'm to old to live and to young to die --- buggerit
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thomas4age
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| posted on 11/8/07 at 09:20 PM |
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hahahaha gezzer I don't even want to think about the amount it would consume on full throttle, but appart from that cruising should be very
similair to the normal Lexus LS400 probably even better because of the weight of one compared to what Im thinking.
it will be a full bypass mode set up, so the SC's will only make boost under acceleration, and will be in 100% bypass when engine speed
isn't rising anymore. the compresion is stock 10.5:1 so when of boost it'll drive like a stock engine, when on go...... whole different
ball game and compression works against me probably, needs some juice against knock
grtz Thomas
[Edited on 11/8/07 by thomas4age]
If Lucas made guns, Wars wouldn't start either.
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thomas4age
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| posted on 15/8/07 at 05:38 AM |
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updated!
So another day of fidling with the engine now sees #1 supercharger mounted to the engine, and the outlet flange made up, I've done that by hand
completly using nothing but a hacksaw and a few files, and once again Oh jolly I need to do another one.....
here's piccies
the allingment of the pulleys is spot on in real whereas the piccie shows an offset gap between the ruler and the pully, it's within 1/10th of a
milimeter overall.
 
pully allignment
 
completed left side
 
front left side
 
Mini M45 outlet flange
Grtz Thomas
If Lucas made guns, Wars wouldn't start either.
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Simon
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| posted on 19/8/07 at 10:16 AM |
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Stupid question, but is that going in a seven, and if so, will blowers clear chassis rails, engine mountings, steering column etc etc etc
ATB
Simon
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bimbleuk
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| posted on 20/8/07 at 09:09 AM |
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Simon,
No I don't believe its Thomas' plan to fit it in a seven. Like me I'll guess he knew which engine he wanted to use and just picked a
chassis to suit. So the GD T70 is most likely where it'll end up.
Thomas,
Makes my SC bracketry look simple even though I cut n shut my bracketry by hand as well. At least I only had the one to do. The alignment can be out a
bit when using belts but of course you want it perfect just like me.
My project took longer than I planned but since I've built my engine and bolted it in the chassis its worked perfectly and much better than I
predicted! The only failure I've had was on the alternator bracket which worked loose due to insufficient bracing. I didn't make that part
so at least I can blame someone else
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thomas4age
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| posted on 28/12/07 at 11:24 PM |
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updated!
Hey all,
after a few moths not working on the engine at all,
(lets just say that 2nd half of 2007 goes in a box and the box will burried on the north pole)
I've finnaly got around to get some quality time in the garage. so late december sees supercharger #2 fitted to the right side of the engine.
the brackets will be also suited with round tubes inside where the bolts pass through.
this one was allready on but there's now a 4age alternator with the 6rib 1uz pulley attached
 
left side + 4age alternator
Right hand side #2 eaton M45
 
rightside eaton front
front of the engine I'll only need 1 extra support pulley for the belt run,
 
engine front view TWIN eatons
sump stays the lowest point of the engine. it may not be higher than 60cm with intercoolers on top of the inlet manifold.
 
Twins fully mounted
belt run
Image deleted by owner
So on to the intercoolers now.
Grtz Thomas
[Edited on 28/12/07 by thomas4age]
[Edited on 28/12/07 by thomas4age]
If Lucas made guns, Wars wouldn't start either.
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oadamo
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| posted on 28/12/07 at 11:51 PM |
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id check first you can get a belt that big
adam
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thomas4age
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| posted on 29/12/07 at 12:42 AM |
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Gates have 6rib belts from 28.8" up to 120.3" in +/- 1.5" increasements, so there must be one availeble,
I could fit another 5 sc's propably before the longest one is to short, whahaha
OT but handy to know, gates numbers:
K06 means 6 rib belt (K04 = 4 rib)
in the # K061203 it says
6 rib 120.3" long on inner length (rib side)
in the # K060288
6rib 28.8" long on inner length (rib side)
the metric coding is like this,
PK62245
PK6 = 6 rib
2245mm long inner length (rib side)
the original belt is 2245MM (88.3" long
so that's covvered, there's a tension pully with a spring attached so that has some play, lets just hope it's strong enough.
grtz thomas
If Lucas made guns, Wars wouldn't start either.
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bimbleuk
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| posted on 29/12/07 at 06:35 AM |
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Looking good as usual!
Obviously this is an early stage and you already be aware of it but keep in mind you my need to add additional sprung tensioners in between the long
belt runs. What I mean is you may get belt whip as the superchargers speed up and slow down under the huge dynamic loads.
Justin
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Mave
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| posted on 29/12/07 at 09:45 AM |
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Looking good Thomas.
My charger should be in the mail too!
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blueshift
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| posted on 29/12/07 at 02:03 PM |
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Is there going to be enough friction to drive the alternator with that small contacted radius?
monster looking engine though makes my NA RV8 look puny.
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thomas4age
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| posted on 29/12/07 at 10:37 PM |
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Hey Justin,
I asked a long time ago about the length that a belt may run unsupported, but noone awnsered, can you tell anything consstructive?
I've seen guys run single M90 compressors with unsupported lengths bigger than my layout on the previous page , they dont seem to have problems,
there's also one difference in my system, the complete load of the SC system is devided over 2 pulleys, so belt slipage on the chargers should
be OK (mini sport don't have problems with up to 220hp)
I'll measure the longest length unsupported but doubt that it is longer than 25cm. this engine is tiny 
@ blueshift: I think I'll be allright, in the original mode it's about the same and I don't run a very big electrical system + the
4age alternator normaly runs on a 5 rib belt and it's niow converted to 6 rib so additional friction is allready there.
I tried to get as much wrap around the cranck pulley and SC pulleys I could, and was even willing to move the alternator to the driveshafts on the
gearbox.
@Mave, Nice man going on the Zetec I suppose? if you find anything that let's us connect a throttle bodie to the supercharger entry please let
me know, still looking for a cheap well thought solution.
Grtz Thomas
If Lucas made guns, Wars wouldn't start either.
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bimbleuk
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| posted on 30/12/07 at 06:52 AM |
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Hi Thomas,
Unless someone else has already done this same setup before then its just something to be aware of when the engine initially runs. Just get someone to
watch and blip the throttle on off sharply to see what happens. More of a problem though if you don't have any sort of sprung tensioner in the
system like on my engine!
In the picture below the small pulley at the top was added as a precaution against whip. Not to provide more wrap as you might first deduce. The OMEX
installation has very similar belt runs to mine but they don't have the pulley at the top. On the rollers their setup spat off a belt on the
first day of tuning. So they went away and revised their design. They still don't have the top pulley so maybe they have a sprung pulley at the
bottom.
Justin
 
Rotrex brackets - front left
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