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Location:
Melbourne
Registered:
May 2002
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Problems that can be faced performing an engine conversion
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Sun, 30 June 2002 04:50
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Hi all!!!
Just wondering, I'll soon be buying a 7M-GE engine that'll be coming out from an MX83 Cressida.
This engine will be going into a GA70 Supra that has a 1G-GEU engine in it.
I'm just wondering what sort of problems I'll be facing with this kind of swap???
So far, I've been told that I may require new engine mounts, crossmember, wiring loom modding, oil sump.
My mechanic will be performing the swap and I just want to buy the parts I need before giving him the job just incase he decides to rip me off, charging me a fortune on parts.
So I want to be ready and I want to know if it's actually worth buying this engine.
Please advise me as to what I could be facing if I buy this engine and what I should do to prepare myself financially.
Thanks!!!
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Location:
Melbourne
Registered:
May 2002
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Re: Problems that can be faced performing an engine conversion
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Sun, 30 June 2002 05:22
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Never done the swap myself, but would it not be cheaper just to sell the GA70 and just buy a MA70, dunno if i a right or wrong
but that is my 2c.
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Location:
Melbourne
Registered:
May 2002
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Re: Problems that can be faced performing an engine conversion
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Sun, 30 June 2002 08:00
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Nope, coz I would not trade the condition of my car despite the engine for a MA70 with a 7MGTE, which most likely will be in crap condition (9 of the ones I've seen for sale were either crap or too expensive).
I pretty much got a Supra in really good condition with the idea of performing an engine swap.
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Location:
Brisbane
Registered:
May 2002
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Re: Problems that can be faced performing an engine conversion
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Sun, 30 June 2002 08:00
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I'd have to agree here. Non-turbo MA70 turbos are getting quite cheap now. You'd be much better off just buying a Supra that came with a 7M-GE from the factory instead of screwing around with engine conversions.
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Location:
Melbourne
Registered:
May 2002
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Re: Problems that can be faced performing an engine conversion
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Sun, 30 June 2002 08:08
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Well, if I had money coming out my ass (I WISH), then I'd give away the GA70 and make Toyota build a special MK3 just for me.
But thats not the case, so I kinda gotta make do with what I got and I much rather have the car and engine I got then to sell it and grab a piece of crap with a turbo engine, coz I could simply have just done that when I bought the car. I looked at 12 of em and I don't want to sell my car...I love it too much!
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Location:
Melbourne
Registered:
May 2002
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Re: Problems that can be faced performing an engine conversion
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Sun, 30 June 2002 08:23
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Hi
I have nearly completed an easier conversion which was a non turbo SW20 MR2 to a turbo setup by removing the 3sge and installing the 3sgte. Everything was supposed to go smoothly and all went roughly!
We originally allowed 3.5 to 4 days full time to get the job done between me and my mechanic and that extended to over 2 months! The car is driveable but with some issues that need to be sorted out.
Good luck with it all if you proceed with it.
regards,
Richard
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Location:
Melbourne
Registered:
May 2002
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Re: Problems that can be faced performing an engine conversion
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Sun, 30 June 2002 11:48
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What sort of problems did you face???
| GTMR2 wrote on Sun, 30 June 2002 6:23 PM |
Hi
I have nearly completed an easier conversion which was a non turbo SW20 MR2 to a turbo setup by removing the 3sge and installing the 3sgte. Everything was supposed to go smoothly and all went roughly!
We originally allowed 3.5 to 4 days full time to get the job done between me and my mechanic and that extended to over 2 months! The car is driveable but with some issues that need to be sorted out.
Good luck with it all if you proceed with it.
regards,
Richard
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Location:
Melbourne
Registered:
May 2002
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Re: Problems that can be faced performing an engine conversion
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Sun, 30 June 2002 13:49
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Hi Rattlehead
How are you? Problems that we had with my conversion include but are most definetly not limited to the following:
1)I had problems with the 3SGE having electronic speedo sensor and the 3SGTE having mechanical speedo sensor which means my speedo and cruise control currently do not work.
2)I had problems with getting the fuel pump to work through the SW20 relay box in the engine bay. Yes I was using the 3sgte ecu at that stage! I have now gone to Wolf 3D version 4.
3)Not knowing where some hoses go to and where to place them to. Would have been a hell of a lot easier if I had a turbo MR2 of the same year in my garage to copy though.
4)Gear selector currently can only choose 1st, 2nd, 3rd sometimes, 4th and can not select fifth at all. This is because it is all offset differently so I will have to make custom brackets up.
5)Accelerator cable had to be adjusted, now you may say that is very easy. But with no room for adjustment in the cable it is not easy!
6)Generally where wires/cables/hoses/anything had to be connected from the 3sgte powerplant to the car their was always something different that needed to be altered/modified. It took approx 15 hours work to totally strip a 3sgte/sw20Mr2 halfcut. A few more hours to place the 3sgte motor/gearbox/axles and efi wiring loom/ecu etc etc etc into my MR2. Then the project REALLY STARTED. Hiccup after Hiccup after Hiccup.
The above should give you some insight into a conversion that is regarded by some as extremely easy and straight forward with no modifications required. For me well it was a different story. I can tell you one thing for sure if it wasn't for Greg at Hi Tech Tune in Dandenong, Victoria I wouldn't have got my car completed to the stage it is now. You can call him on 9792-3222.
regards,
Richard
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Location:
Melbourne
Registered:
May 2002
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Re: Problems that can be faced performing an engine conversion
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Sun, 30 June 2002 14:29
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Hey GTMR2....
Thanks for the reply, I really appreciate it...
What sort of preparation did you do before the conversion???
Coz like I thought that it wouldn't be such a complicated conversion. I knew things may be different, but not 2 months worth.
Which is really why I'm asking and I don't want to sell my car. Engine conversion is the way I'm gonna be going in terms of mods for my car or getting what I want. Who do you recommend I talk to so I can ensure that the conversion is smooth and if I can get by using a 7M out of a Cressida instead of a Supra??
Coz I really wanna change the engine and not my whole car.
So really I gotta know that if I get a Cressida 7M engine, what kinda things are different to a Supra 7M engine that I need to be aware of so I can get those parts ready for the mechanic to avoid getting my car off the road for a long time.
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Location:
MACKAY
Registered:
May 2002
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Re: Problems that can be faced performing an engine conversion
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Sun, 30 June 2002 14:35
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Putting a 3SGTE into a TA22 is probably easer than that because at least before you start you know you will have to design and custom make every little thing !  !!
Trevor
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Location:
Melbourne
Registered:
May 2002
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Re: Problems that can be faced performing an engine conversion
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Sun, 30 June 2002 14:55
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How about putting a Cressida 7MGE into a MK3 Supra?????
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Location:
Brisbane - Chapel Hill
Registered:
June 2002
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Re: Problems that can be faced performing an engine conversion
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Sun, 30 June 2002 15:45
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The biggest threat to _any_ engine conversion, is running out of beer! Make sure the fridge is stocked well in advance.
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Location:
Melbourne
Registered:
May 2002
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Re: Problems that can be faced performing an engine conversion
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Sun, 30 June 2002 16:13
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hehehehe, there's plenty of that here!!!
Dunno if my mechanic drinks tho....
Seriously, are there any problems I'm likely to be aware of, because if parts amount to nearly $1000 on top of the price of the engine etc...then I'm gonna back out. I've got til Saturday to decide whether or not I finally take it.
Please help poor me!!!
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I supported Toymods
Location:
Epping, Sydney
Registered:
May 2002
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Re: Problems that can be faced performing an engine conversion
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Mon, 01 July 2002 06:05
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well, if you've already allowed for the front cut AND labour, and have left $1000 over for parts, then you *might* make it
basically you want to have $1000 left over for "unforseen expenses", which there are always LOTS of
you'll need new hoses, lots of consumables (which will total over $100 on their own), plus find someone to amke up some engine mounts for you... sumps can be expensive, depending on where you can get them from....
basically, you want to allow for everything conceivable, because you'll need most of it!
plus electricals can be a nightmare
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Location:
Melbourne
Registered:
May 2002
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Location:
Melbourne
Registered:
May 2002
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Re: Problems that can be faced performing an engine conversion
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Mon, 01 July 2002 10:40
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Hi Rattlhead
The type of preparation I had was having all the parts ready to fit that I thought would simply hook up easily. The thing is that their is lots and lots of fiddly bits to do. The preparation I should have done was knowing what needed to be modified for the complete job.
regards,
Richard
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Location:
Adelaide, SA
Registered:
May 2002
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Re: Problems that can be faced performing an engine conversion
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Mon, 01 July 2002 11:32
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Forget the 7M go the 1jz!
I thought the 7M to 1 jz would be finished in 2 weekends!
Problems were mainly due to plumbing and wiring - if you want to keep everything working and looking standard there is a LOT of mucking around. But with the JZA crossmember, almost everything either bolted in or had a little plug in the bolt hole which you pull out and then it bolts in!
Seriously you will need a JZA-70 front cut coz most parts in the engine bay were swapped from JZA to MA. To just buy an engine and get the rest as parts would be a real headache. Good Luck! (don't get a damaged front cut - you probably need the radiator, intercooler, power steering oil cooler, engine fan oil cooler, air-conditioning pump and a straight crossmember!)
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Location:
Melbourne
Registered:
May 2002
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Re: Problems that can be faced performing an engine conversion
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Mon, 01 July 2002 11:43
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Thanks lumpy, I think I may have to save up for a good front cut....much more money than what I wanted to spend.
I guess I'll wait til I get my tax return...
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I supported Toymods
Location:
Epping, Sydney
Registered:
May 2002
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Re: Problems that can be faced performing an engine conversion
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Mon, 01 July 2002 11:45
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a 1jz-gte manual front cut can be found for $2500 if you dont mind shopping around
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Location:
Melbourne
Registered:
May 2002
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Re: Problems that can be faced performing an engine conversion
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Mon, 01 July 2002 11:47
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I know Jap motorsport have em for $2200 or something...
but then another $400 for freight....which is not very pleasant
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I supported Toymods
Location:
Epping, Sydney
Registered:
May 2002
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Re: Problems that can be faced performing an engine conversion
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Mon, 01 July 2002 11:50
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$2200 ?! that's a great price!
where are they?
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Location:
Melbourne
Registered:
May 2002
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Re: Problems that can be faced performing an engine conversion
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Mon, 01 July 2002 12:25
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I meant Asian Autospares.
I dunno where they are, I think QLD.
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