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TII S5 swap to TII S4? Funny question? :)

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Old 03-18-12, 05:19 PM
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Glease Manufacturing
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ON TII S5 swap to TII S4? Funny question? :)

Did some searching, but most we talking about swapping from S4 to S5.

So here's the situation. I bought a beautiful rust free S5 Savanna, and it needed an engine. No problem, but it will need two rotor housings, two rotors, and a rear center iron to rebuild it. So in my searching I found an S4 RX7 with a ton of mods, that was freshly rebuilt a year ago but then not driven much. Bought the car for parts, and the engine passed a compression test with flying colours.

So to get going this summer I want to put the S4 engine into my S5 Savanna.

What will I be looking at? Do you think it would be worth opening the engine up and putting O-Rings in with my S5 plates as well? Then it would be a direct swap, right?

Also Note!!! The Savanna is running MegaSquirt and pre-mix already, no omp needed.

Sorry that was long, just wanted to give some background. Thanks!
Old 03-18-12, 09:57 PM
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Id use the s4 long block,s5 sensors,wiring,s5 turbo and exhaust.
basically engine swap with s5 electricals.You don't have to worry about the omp if it is deleted.(so premix).
Old 03-18-12, 10:42 PM
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Ok awesome. I thought the outside irons were different. That sure sounds easy then!
Old 03-18-12, 11:20 PM
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I got an s5 TII keg in my originally S4 Base N/A ,so ya it is just plop in and Fiddle around with some stuff.(sort of)..heh,heh!
that is a pic of what I got in my avatar.
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