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Location:
Melbourne
Registered:
April 2005
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JZA70 to MA70 Conversion advice
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Mon, 02 May 2005 12:09
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Jsut after a few links or any1 that has done this conversion, my supra is a MA70 7MGE AUTo going to JZA70 1JZGTE r154 MANUal, any advice would be great.
k thanks bye!
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Location:
Montrose, VIC
Registered:
May 2002
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Re: JZA70 to MA70 Conversion advice
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Mon, 02 May 2005 13:38
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I guess the best way would be to start doing it, and ask questions when you get stuck  You bought the black half cut the other day, yeah?
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Location:
Melbourne, Australia
Registered:
July 2002
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Re: JZA70 to MA70 Conversion advice
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Mon, 02 May 2005 13:42
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We have not long ago completed this conversion. Was very straight forward and relatively easy. Tailshaft can be a bitch but we managed ok. If you have any probs feel free to drop me a PM, no doubt myself or my old man can answer your questions.
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Location:
melb
Registered:
February 2005
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Re: JZA70 to MA70 Conversion advice
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Mon, 02 May 2005 13:48
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Buy the 1/2 cut and you will have all the help you will need
MATT.
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Location:
Melbourne
Registered:
April 2005
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Re: JZA70 to MA70 Conversion advice
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Mon, 02 May 2005 22:08
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Any1 know of some links?
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Location:
Northwestern Sydney
Registered:
August 2002
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Location:
Melbourne
Registered:
April 2005
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Re: JZA70 to MA70 Conversion advice
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Tue, 03 May 2005 23:38
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Pictures? or a writeup please 
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Location:
Northwestern Sydney
Registered:
August 2002
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Re: JZA70 to MA70 Conversion advice
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Wed, 04 May 2005 00:27
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In short this is what lead to the conversion.
Blown head gasket in 7M-GTE, we looked at the option of putting in another 7M-GTE or rebuilding the one that was in there. Swapping for another 7M left us back where we were before , worring about blowing a head gasket again, a rebuild was quoted at about $3500 and that was depending on the condition of the internals.
We decided on the 1J route. We put some costings together keeping in mind we were going from auto to manual as well comparing the benifits of using a front cut or just engine loom.
using the front cut came out a fair bit cheaper and up to now we are just under the $5000 we allowed for the conversion.
Rough costing using front cut.
Front cut $4800 delivered Melb - Syd.
oils, seals, sump washers etc - $156
Time - Priceless
Total - $4956 (up to now)
Rough cost using engine package.
Engine, loom - $1800
R154 gearbox conversion package $2200
1JZ Crossmember - $250
Intercooler + piping $1200
Thermo fan setup $350
Air cond. piping reworking $380
Power steering piping $440 (inc new cooler)
Exhaust system $250 (though this could have varied if we redid the whole system)
Oils 156
Total - $7026 (and this is assuming there were no parts missing from the engine which tends to happen alot.)
All in all the front cut is by far cheaper and you have every thing there you need including pissy things like the fron radiator/bonnet release support member which needs to be swapped to get the JZ intercooler to fit (or any aftermarket for that matter)
In all tearms of reality there are pros and cons for both
Front cut - Fast conversion ours will be around 5 days.
All parts should be there
you get the leftovers of the front cut for spares to keep or sell to recoup money.
the wiring is much simpler
con - you end up with a stock 1jz
engine package.
you get to put in performance exhaust, I/C (however at the expense of pushing the price into the $9000 mark.
con will take ages to find all the required parts
you need to find all the manuals etc as you don't have somthing to work from.
Don't kid yourself the cheapest quickest way is to use a front cut if you want a smooth fast conversion.
We used the front cut and we now have a spare bonnet, front bar, indicators, good dash and guages, all the internal A/C stuff, spare steering rack + suspension/brakes, headlights, nose cone, plus the injectors, turbo, I/C from the 7M-GTE to sell if we want to.
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