Other Engine Conversions - non V-8 Discussion of non-rotary engines, exc V-8's, in a car originally powered by a Rotary Engine.

Anyone know whats involved in putting a 2jz in an FD?

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Old 03-05-07, 12:12 PM
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Anyone know whats involved in putting a 2jz in an FD?

Before I go wasting anytime looking at swapping this motor in, I was curious if anyone had an first hand experience? For example do I need to rework the firewall? I have both cars/engines here, just don't want to spend a serious amount of time on this yet( too many other cars 1st in line...)
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Old 03-05-07, 01:34 PM
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If you are going to go to all the trouble of building a new subframe I think it would be in your best interests to fabricate an LS1 subframe instead. There is very high demand and currently a big lack of supply of QUALITY LS1 subframes (part of the reason why you have my car and it doesn't have an LS1 is because of the subframe issue).

2JZ seems like more trouble than it is worth. Givent the length of the engine and the slope of the FD's hood I can't imagine not having to rework the firewall (at least mildly).
Old 03-05-07, 02:12 PM
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iirc the 2jz is so tall it has to either be up way too high or you have to relocate the steering rack which causes bumpsteer
Old 03-05-07, 02:22 PM
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Like 1Revvin7 said, who has first first hand experience?

Have you tried reseaching on Supraforums?
Old 03-05-07, 06:10 PM
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Considering there are probably 2 or 3 of these running around in the country I wouldn't expect a fast response.

As the old saying goes: Where there is a will... there is a way. If you move the steering rack and correct for it... there are no bumpsteer issues.

If you don't have the skills to do most of the work yourself..... then prepare to have $20-30K+ for this conversion to be done by a shop.

The LSx conversion has few complications, delivers incredible performance, and the conversion is pretty much a bolt in affair with zero fabrication required )aside from exhaust). The Kmembers had a problem with a bad batch of welds at one point; however I wouldn't say there is a lack of quality ones out there. Personally the Hinson one works as it should. Maintains the 50/50 weight balance, off the shelf (JTR) long tube headers install in about 10 minutes, no cooling probs, and no bumpsteer issues.

My car pulled 1.13g's with the Hinson mounting kit and dialed in suspension/tire/rim combo and was one of the fastest cars on the track in the 2005 Sport Compact Car Mag (UltimateStreetCarChallenge) event. I'd say the car performs great.

A 2JZ conversion pretty much makes it a drag only car and the handling won't be like before. To each there own.
Old 03-05-07, 06:18 PM
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A 2JZ conversion pretty much makes it a drag only car and the handling won't be like before. To each there own.
The 2JZ is certainly longer and heaver then either a stock 13B or LSX, but to think that a person or shop capable of doing the fab work for this swap couldn't balance the chassis and and handling is a statment in the same vane of anyone in this forum saying "you'll kill the handling or 50/50 weight distro" when the V8 swap is brought up.
Old 03-06-07, 01:05 PM
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Originally Posted by gnx7
Considering there are probably 2 or 3 of these running around in the country I wouldn't expect a fast response.

Yeah I didn't expect one really, can't hurt to spend 20 seconds posting however.
The more I think about it, I don't know if I want this car here that long. We've done similar before and it takes a lot of when you cut a car in half and hand make the front end....
Old 03-11-07, 04:39 PM
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we made a new subframe for mine and its not bad to do and are able to have the steering exactly how it should operate..
Greg
Old 03-11-07, 04:43 PM
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https://www.rx7club.com/other-engine-conversions-non-v-8-118/2jz-rx7-631584/
Old 03-22-07, 01:37 AM
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Thanks for the info. I will keep it in mind for future. However this(2jz) isn't going to happen. If anything the car will get a 20B .
Old 03-23-07, 10:06 PM
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Originally Posted by cozmo kraemer
If you are going to go to all the trouble of building a new subframe I think it would be in your best interests to fabricate an LS1 subframe instead. There is very high demand and currently a big lack of supply of QUALITY LS1 subframes (part of the reason why you have my car and it doesn't have an LS1 is because of the subframe issue).

2JZ seems like more trouble than it is worth. Givent the length of the engine and the slope of the FD's hood I can't imagine not having to rework the firewall (at least mildly).
...50 dollars in welding work would solve all the problems with the Hinson subframe, strength wise. If you're swapping engines and that seems exorbitant, you need to reconsider your plan of action (which it sounds like you already did anyway). Shimming the Granny's kit down and adjusting bumpsteer would work also, though that introduces other suspension geometry issues. Still all in all, an LS1 kit is not exactly a difficult or unusual proposition.
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