wiring harness for a 88

881ggte · #1 01-31-2006, 07:38 PM

Im going to put a 1ggte in a 88 supra that had a 7mgte.I got the 1ggte at a good deal.I would like to know if I can use the 7s wiring harness or are the plugs ends different? and what can I do to get more ponies out of it with out going deep into the motor?I have a 3 inch down tube for the 7 and I want to use the injectors and the mast air flow sensor off of the 7, will this give any more power if this parts will work. but I need to know about the wiring harness frist.

TcmaBoy · #2 02-01-2006, 03:01 AM

Um.....why are you going to a 1GGTE? You are aware that you are stepping down from 3.0L to 2.0L right? Finding parts for the 1GGTE will be a pain. You will have to go through an overseas source. I would reccomend checking with companies in Australia. Start searching for Aussie and British forums that deal with the 1GGTE. You are going to need their support.

You should have either stayed with the 7MGTE, or if you are going to swap you should swap in a 1JZGTE. It offers more potential than the 1GGTE.

The harnesses are not compatible. You will have to splice the engine and ECU harness into the existing body harness.

881ggte · #3 02-01-2006, 05:22 AM

I know it would be better to go with a 2jz but this is my wife car.The 7 that was in in blow a rod and I didnt want to send $4000 on it, I got the 1ggte for $600 with tranie.

TcmaBoy · #4 02-01-2006, 01:44 PM

You can get a replacement 7MGTE for $800 to $900.

881ggte · #5 02-01-2006, 05:28 PM

The 7 only has 20 more horses over the 91 1ggtes, 230 vs 210 and the 1ggte from what Ive read is more dependable.

projectsupramk3 · #6 02-02-2006, 11:27 AM

How many times have you seen me post TcmaBoy and you don't even mention my name?

I have a 1GGTE in my avatar and I've been running one for quite some time. I can get anything made for the engine but imported parts are not cheap. The fact is, if you have an engine no one in the US wants parts are going to be more expensive and harder to find, and knowledge will be more difficult to gather. There are many advantages to the 1GG but the engine is obviously not for everyone. No the 7MGTE KV AFM (by the way it's MASS air flow) will not work, the injectors will assuming you have the correct impedence but why would you ever want to use 15+ year old used injectors. What "7"? RX7's don't have 20 more HP? Lotus Super7's? It's a 7M, say it with pride.

TcmaBoy · #7 02-02-2006, 04:24 PM

Sorry about that, I forgot that you have one.

There is nothing wrong with old injectors. Just have them cleaned up and flow checked by a shop before you use them. I have found that the trick to finding parts is to find equivilant parts on other vehicles, or custom fitting parts to suit my needs. Things like fuel injectors turbochargers, fuel pumps, and a few other things are generic parts. There are only a few companies that make them. Well, not turbos in Toyota's case they make their own stuff. You just need to find out where you can get a compatable part. My Tacoma has injectors from a Nissan a fuel pump for a VW, and a T-100 radiator. My 1JZ Supra is the same way. Finding CT-12As in good shape isn't easy. Mine are about to go. When they die I will probably replace them with a pair of DSM units, It has a blend of parts from the MK III and MK IV Supra, SC 300, GM, and a few electronic leftovers from my Tacoma just for some spice. Learning how to make your own gaskets is also a useful skill. They can be a bit hard to come by here. Ultimatly you are only limited by your creativity.

Be aware that if you do this swap and something breaks it could be a long while before you get rolling agian. My Supra project has been delayed by as much as 3 months while waiting on back order parts from Toyota Japan.

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