1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

83 rx7 engine swap

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Old 09-02-07, 01:23 AM
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Exclamation 83 rx7 engine swap

i am getting a 1983 rx7. sometime this week and it does not have an engine. what would be a semi fast engine that is cheap and will bolt right in be? ok thanks
Old 09-02-07, 10:26 PM
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Dont really have much options there.
Except for the EFI 13B of the 84-85 GSL-SE,all 1st gen RX-7's came with basically the same 101HP carbureted 12A engine.They are all easily swapped between the 79-85 year cars,with only minor changes made to the smog gear through the years.
A 13B 4-port from the 70's or TII 2nd gen would be a good choice for a 30-40 HP gain running a carb,but the 70's engines are getting rare and both engines fetch a fair bit of money compared to a stock 12A.For a mild/moderate upgrade from the stock HP,youll HAVE to spend some money on a different generation engine,or get a stock 12A for cheap and spend the money modifying it.You can get another 50HP out of a stock 12A with just bolt-on mods,providing you dont have to smog it and dont care about fuel consumption.
Old 09-02-07, 10:30 PM
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Pick up a ported engine if you do not feel like porting it yourself.
Old 09-02-07, 10:56 PM
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i guess ill probably stick with the stock engine. are they hard to find? oh and is there any other engines that will bolt right in, like a 4clyinder or a 6cycliner?
Old 09-02-07, 10:59 PM
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Originally Posted by Willdapope
i guess ill probably stick with the stock engine. are they hard to find? oh and is there any other engines that will bolt right in, like a 4clyinder or a 6cycliner?
Post a WTB ad in the 1st gen classified parts section.

No a 4 Cylinder or 6cylinder will not "Just" bolt in.

Recommend you do some reading up on your newly accuired car in the FAQ section.
Old 09-02-07, 11:02 PM
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oh ok i will. so the only engines that will bolt in are rotatory engines ?
Old 09-02-07, 11:03 PM
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We tend not to think kindly of people with piston'd RX7's :P
Old 09-02-07, 11:07 PM
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oh oops sorry. im just a 16 year old look for a cheap *** engine that will fit :P sorry once again.
Old 09-02-07, 11:13 PM
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Originally Posted by Willdapope
oh oops sorry. im just a 16 year old look for a cheap *** engine that will fit :P sorry once again.
Haha, dont worry about it. We wont burn you at the stake or nothing. Good luck on the engine and whatnot.

Oh, and your from Huntsville, thats awesome. I was born there 20 years ago, still visit my grandparents from time to time there. Maybe one day when I am there we can meet and haul *** down Val Monte or something.
Old 09-02-07, 11:18 PM
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lol yeah there would be awesome! what is Val monte by the way? is it monte santo mountain? and i need your opinion on this one. what should i get. a $800 jeep or a $150 rx7 with now motor? ok thanks
Old 09-02-07, 11:21 PM
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Originally Posted by Willdapope
lol yeah there would be awesome! what is Val monte by the way? is it monte santo mountain? and i need your opinion on this one. what should i get. a $800 jeep or a $150 rx7 with now motor? ok thanks
I think but dont quote me on that. My father knows where it is exactly, he rode it all the time when he was a kid as well. Also, I would buy the RX, cause lord knows why the jeep is 800$, and the RX you can put in an engine and know the history somewhat. You can find a pretty bang awesome low mileage 12a or a good 13b for 650.
Old 09-02-07, 11:28 PM
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oh ok i like the rx better anyway. do u know any place in huntsville where i can find a 12a or 13b? id like to spend around 400-550 on it.
Old 09-02-07, 11:39 PM
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Not offhand. Check your PMs.
Old 09-03-07, 08:45 AM
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try going the 13b route. Just my small piece of advice.
Old 09-03-07, 09:29 AM
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we have a 12a in clarksville, tn has small oil leak in front seal ran great
we did 13b swap 300.00 pick up only
Old 09-03-07, 09:49 AM
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Get a 13b from a second gen, look on craigslist, the for sale section here, in your local paper, rotary resurrection for a brand new $1000 motor, anywhere. Get an oil pan and front cover from a GSL-SE, and a carb setup, all of this can be found in the for sale section.
Old 09-03-07, 08:37 PM
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does anyone know the weight of the 83 rx7 without and engine? and do u think it can be put on a trailer similar to this one?
http://dixiecustomwagons.com/images/trailer.jpg
Old 09-03-07, 09:11 PM
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Not likely.....figure around 2000lbs for a 12A 1st gen with no engine.

Those wheels look small,they are probably on a 2000lb axle.The trailer alone looks to be about 700-800lbs.The trailers I rent at work in that size usually have 15" wheels,with 3000lb axles,but thats still pushing it considering the weight of the trailer has to be taken into account.That trailer looks to have high speed skinnies on it.....probably 12"ers.
You need a tow dolly....... or a single/tandem axle flatbed with about a 4000lb gross capacity axle(s) and minimum deck dimensions of 14'x 6' to haul a 1st gen.

Heres what I rent to people who need to haul small cars,its light enough for a 1/2 ton truck,but will handle up to 4500lbs.........
http://www.wvbizmall.com/albanyrental/demcotrailer.html
Old 09-03-07, 09:19 PM
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oh ok thanks thats what i thought. i guess ill will borrow my friends trailer that he uses to carry his nova dragster.
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