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Toymods Club Treasurer
Location:
Sydney
Registered:
May 2002
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 Force inducting an NA motor
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Mon, 26 January 2004 22:28
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Having never looked at doing this before, I'm wodering what the pitfalls are in applying forced induction to an NA motor, I've always just bought the turbo straight out.
I know that if the boost is kept low, say 6psi or so, that generally the NA motor can be left untouched,
but...
we all also know that I'll want to wind the boost up later, so am I better off rebuilding a motor before I put it in, or waiting until I can afford to add the turbo/supercharger & doing it then.
The motor I thinking about is a 1MZ 3.0L V6 (Camry, Lexus ES300)
The things I know that I should do are:
forged pistons with lower compression, say between 8:1 or 9:1 (does anyone know compression is standard?)
Add an intercooler.
Anything else I need?
What would be the deal with the map sensor?
Will it run out of range with the boost?
If I change it to one from a turbo car, say GT4, will the computer then get the right readings?
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Location:
Syndey
Registered:
December 2002
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Re: Force inducting an NA motor
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Mon, 26 January 2004 23:35
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i have done it heaps of times,
im running 15psi on my misses starlet with the stock 4efe (non turbo aus motor) motor in it,
and on a 4age running 11psi no problems at all,
its all in the tune, if the tune is bad the motor will blow, if the tune is good it will be fine,
dont waste your time with factory ecu's the toyota ones are very very hard if not impossible to retune, go straight for a after market!
Dale
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Location:
qld
Registered:
December 2003
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Re: Force inducting an NA motor
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Tue, 27 January 2004 00:39
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depends on the motor. some engines have really weak rods which are unsuitable for forced induction, e.g b16 honda. you will also need to plumb oil and water feed and return lines. youd definately need some type of programable efi. like 10sec said, the tuning is very important, especially on an engine never intended to be force fed which will inherantly have less margin for error (due to its weaker internals).
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Location:
Brisbane
Registered:
February 2003
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Re: Force inducting an NA motor
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Tue, 27 January 2004 01:47
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you'll want to look at your cooling system as you're going to add more heat into it that designed for.
even if it's only improving the air flow to the radiator, or something more substantial like extra fans.
might be worth talking to a radiator place to see if there's aa heavy duty item you can run.
carefully plan your water lines to/from the turbo - you want it flowing regardless of state of the state of the thermostat (e.g. cool fluid from lower block, hot fluid into top pipe after the thermostat)
plus oil cooling will help - whether it's the donut cooler/heater at the oil filter - or an external unit out the front. FWIW: i'm using an external trannie-cooler to take the heat out of oil going to the turbo - it's not a full-flow cooler.
And if you're going to put an aftermarket ECU that has an RS232 or USB port, get a cheap laptop to help with tuning - otherwise you have to use an auto-elec or dyno shop everytime you want to tweak the system.
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Location:
Helensvale, Queensland
Registered:
March 2003
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Re: Force inducting an NA motor
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Tue, 27 January 2004 03:33
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Hmm, i am thinking about turbo'in' my 5sfe. I realise i can do a 3sgte swap but i want to be different. I am thinking of getting the exhaust manifold, turbo and top mount intercooler off a 3sgte and slapping it on my car. If i just left the car as is otherwise (EG: stock internals, stock ecu, stock injectors etc) what would happen as the car trys to drive like normal, but has boost?
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Location:
Syndey
Registered:
December 2002
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Re: Force inducting an NA motor
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Tue, 27 January 2004 03:40
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tryed that on my misses car, we fitted the turbo etc at the workshop then i took it home to fit the computer on the drive home as soon as you think about coming onto boost it will ping its nuts off and then will just hit a brick wall and go no where,
not a good thing, lucky we had to only drive 2km!
here are some pics on the conversion we did on the starlet
Dale
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Location:
Bundaberg, Qld.
Registered:
May 2002
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Re: Force inducting an NA motor
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Tue, 27 January 2004 08:12
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 Dale, what pump do you like to use with the w2a i/c's?
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Location:
sydney
Registered:
April 2003
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Re: Force inducting an NA motor
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Tue, 27 January 2004 08:58
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on www.toyotanation.com, a member, "Tony the Tiger" has turboed his 1MZ with great success. get into contact with him about specifics.
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Location:
Syndey
Registered:
December 2002
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Location:
Sydney
Registered:
November 2003
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Re: Force inducting an NA motor
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Tue, 27 January 2004 11:54
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you can also get thick metal gaskets that work as a decompression plate.
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Location:
Brisbane
Registered:
May 2002
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Re: Force inducting an NA motor
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Tue, 27 January 2004 14:27
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Decompression plates (or thick gaskets) are a BAD idea when you're talking about modern engines which are designed to make use of quench area. Reduce that quench area and you'll end up with an engine that pings more, not less!
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Location:
Brisbane
Registered:
February 2003
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Re: Force inducting an NA motor
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Wed, 28 January 2004 04:07
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jeez - imagine 2 custom-made metal gaskets - o-rings, machining , etc -
btw, if you go metal spacer plate you'll become very adept at replacing blown head-gaskets - 4 all up as you're going V6?
tho - your local spare parts shop will know you by name tho ...
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Toymods Club Treasurer
Location:
Sydney
Registered:
May 2002
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Re: Force inducting an NA motor
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Fri, 20 February 2004 01:51
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Where is "Tony the Tiger"?
I managed to find a wrecker this morning with 4 1MZ-FE's on the shelf & one still in an 01 Camry.
$1200 for a bare motor, $1800 with wiring.
Still have concerns about fitting this to my car.
The engine mounts are completely different.
ie 2 mounts either side of engine half way like a RWD setup instead of one on each side like my car.
Plus it think it's going to be hard to fit a 4wd gearbox without massacring the rear exhaust headers. Mind you if I go turbo, this have to be done anyway.
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Location:
sydney
Registered:
April 2003
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Re: Force inducting an NA motor
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Sat, 21 February 2004 01:32
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| wagonist wrote on Fri, 20 February 2004 12:51 |
Where is "Tony the Tiger"?
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he is on www.toyotanation.com most of the time on the camry forum. have a search round there.
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Location:
sydney
Registered:
April 2003
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