putting v8 in rx-7 - Mazda Forum
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post #1 of 42 (permalink) Old 01-05-2003, 10:50 PM Thread Starter
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I bought 1986 RX-7 and having 350 Chevy V8(engine was bad) put in.I was wondering if anybody did this before. I would like to hear from you if you tried this before.
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post #2 of 42 (permalink) Old 01-06-2003, 03:55 PM
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yes it has been done a lot of time.check out wrong motors website for info
they also sells themounting bracket for the rx7 lt1 or ls1 .
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post #3 of 42 (permalink) Old 01-15-2003, 12:53 AM
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Also check Granny's Motorsports for V8 swap kits and
Torquecentral which has a v8 7 forum.
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post #4 of 42 (permalink) Old 01-15-2003, 02:04 AM
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Seems rather stupid... the whole advantage in the rotary is that it's a helluva lot lighter than a regular V engine... The RX-7 engine weighs about what a 4 cylinder does. Putting a V8 ruins not only its handling characteristics but also the whole point of the car.


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post #5 of 42 (permalink) Old 02-05-2003, 05:09 PM
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if you do stick a 350 in(i dont agree but do what you will) what are you going to do with the rotary, considering if it has one in it or not(parts car?) if it came with an engine are you getting rid of it? im looking for a 12A or 13B 4 or 6 port to rebuild and port etc. if you want to get rid of it let me know, you might already have a buyer

No im not a certified mazda mechanic, but i did stay at a Holiday Inn Express last night
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post #6 of 42 (permalink) Old 02-20-2003, 08:15 AM
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This sounds kinda silly to me. Why would someone want to replace a rotary engine with any kind of common piston engine?

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post #7 of 42 (permalink) Old 02-25-2003, 03:23 AM
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he wants to 'cause some people just can't live without the torque straight 'cubes gives ya... and hey, i don't have a problem with that... i just know that the rotary is a fundamentally better design for the application
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post #8 of 42 (permalink) Old 04-05-2003, 11:09 PM
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no...just no..thats all I have to say. the rotory engine is what made mazda and is its trade mark, you can't just switch it out. otherwise you might as welll do what my friend sean wanted to, put a supra engine into an rx-7
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post #9 of 42 (permalink) Old 04-06-2003, 03:43 AM
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Quote:
Originally posted by ///BHRpowered@Apr 5 2003, 10:09 PM
no...just no..thats all I have to say. the rotory engine is what made mazda and is its trade mark, you can't just switch it out. otherwise you might as welll do what my friend sean wanted to, put a supra engine into an rx-7


because a V8 will be a **** of a lot more reliable and responsive to mods than a rotary would...



mazda or not... the rotary has ALWAYS been plagued with reliabiltiy / longevity problems and putting in V8 motors is probably a very smart thing do to if you are looking for good power / reliability / ease of maintence

1993 Acura NSX
1988 Mazda RX-7 10th Anniversary Turbo II
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post #10 of 42 (permalink) Old 04-07-2003, 07:17 PM
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A rotary is plagued by reliability/longevity issues only if they are not taken care of properly.

A well taken care of rotary can last every bit as long as your typical V8. It's just a matter of knowing how to take care of them.

I know of a few rotaries running in excess of 200k miles on the original build.

88 RX-7 Turbo II, 87 RX-7 Base, 00 Honda Civic HB, 91 Honda CRX DX
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