NoPistons -Mazda Rx7 & Rx8 Rotary Forum

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-   -   V-8 In An Rx-7??? (https://www.nopistons.com/engine-swaps-35/v-8-rx-7-a-12069/)

monstermazda 02-10-2003 02:41 PM

just got started on my v-8 instalation.. putting a chevy 350 in a 1988rx-7.. this thing is going to fly....





interested check out www.grannysspeedshop.com



https://www.nopistons.com/forums/pub...#>/BURNOUT.gif

https://www.nopistons.com/forums/pub...#>/BURNOUT.gif

rxpower 02-10-2003 05:40 PM

too bad the site is down. https://www.nopistons.com/forums/pub...IR#>/dunno.gif

Racer X 02-10-2003 10:25 PM

I have pics of a BS V8 swap in a FC as well.They are posted in the canadian forum.Just look for the thread where it says that the guy should be shot. https://www.nopistons.com/forums/pub...#>/biggrin.png V8's belong in mullet mobile camaros.Not Rx7's.Theres not that big of a wieght difference after you drop that heavy ass engine in thier. :rant:

Racer X 02-10-2003 10:28 PM

Heres a link to that thread except the pics aren't linked to it anymore.V8 swap

monstermazda 02-11-2003 02:25 PM

try it again www.grannysspeedshop.com

then scroll all the way to the bottom and there is a list the likks to cars with v-8's they are sweet..



my favorite is the red 3rd gen with the chevy LT-1...

Jerk_Racer 02-11-2003 07:49 PM

V8 in a 7? Don't be so closeminded. There are enough of these 2nd gens running around that it shouldn't be an issue. Being original is better than following the herd.





V8's aren't just for white trash anymore. :smirk:



Don't click this if you hate V8's

This link is about the car below. It has a V8 and I love it in spite of it.



http://hem.passagen.se/hemipanter/PANTERA.jpg

rx7machine 02-11-2003 10:13 PM

A V-8 in a RX-7.. https://www.nopistons.com/forums/pub...DIR#>/wink.png

Racer X 02-11-2003 11:22 PM


Originally Posted by rx7machine' date='Feb 11 2003, 08:13 PM

My thoughts exactly.

rx7machine 02-11-2003 11:32 PM

https://www.nopistons.com/forums/pub...#>/biggrin.png I say keep the rotary.. hell.. that's what was intended it to be in it.. https://www.nopistons.com/forums/pub...IR#>/dunno.gif https://www.nopistons.com/forums/pub...#>/biggrin.png

monstermazda 02-12-2003 02:35 PM

no it was to slow with the rotary plus reliability was out of the question...

i think that the 7 with a v-8 will kill all who try me....



i have seen a 7 vith a v-8 in it and he was running 11's he said it was the cheapest and fastest drag car he had ever made..

monstermazda 02-12-2003 02:38 PM

hey if anyone is interested in some performance parts for a 2nd gen pm me i need the money to finnish my MONSTER MAZDA

vosko 02-12-2003 02:55 PM

ok have fun destroying any value in the car :bigthumg:

75 Repu 02-12-2003 02:59 PM

mmmmm.V8... never liked the Juice though..until they came out with V8 Splash

75 Repu 02-12-2003 03:00 PM

That Pantera is Noice..

cymfc3s 02-12-2003 03:06 PM

cool, keep doing those v8 conversions, your increasing the value of my rotary powered rx7's!

vosko 02-12-2003 03:11 PM


Originally Posted by cymfc3s' date='Feb 12 2003, 04:06 PM
cool, keep doing those v8 conversions, your increasing the value of my rotary powered rx7's!

i actually thought of that each V8 conversion makes all the other rotary cars increase in value https://www.nopistons.com/forums/pub...IR#>/boink.gif

75 Repu 02-12-2003 03:13 PM

WOO HOO.. My repu will go up in Value too then.. Yeah..

rx7machine 02-12-2003 05:31 PM


ok have fun destroying any value in the car
Yea, really..


i actually thought of that each V8 conversion makes all the other rotary cars increase in value
:smirk: :bigok:

Racer X 02-13-2003 12:40 AM


Originally Posted by monstermazda' date='Feb 12 2003, 12:35 PM
no it was to slow with the rotary plus reliability was out of the question...

Don't even give me a reason like this to flame you.They are reliable if your not a total idiot and neglect them.If you do proper maintenance they can be just as reliable as a piston engine.Well the NA's for sure.

TurboSmoke 02-14-2003 01:06 PM


Originally Posted by rx7machine' date='Feb 11 2003, 09:32 PM

i am with him. i think a v8 in a rx7 is a discrase. its like mixing steak and choc. pie and eating it. its not good.

75 Repu 02-14-2003 01:10 PM

UH, this thread is taking a bad turn...



My opinion is that it don't matter.. As long as the owner likes it its cool..

rx7machine 02-14-2003 04:08 PM


i am with him. i think a v8 in a rx7 is a discrase. its like mixing steak and choc. pie and eating it. its not good.
lol, I don't hate V-8's in 7's.. I just wouldn't do it to mine, that's all..


UH, this thread is taking a bad turn...



My opinion is that it don't matter.. As long as the owner likes it its cool..
Exactly. :bigthumg:

ZoomZmZm2ndGen 02-14-2003 04:53 PM

If Chev can put a 4 rotor engine in a Corvette , then I can put a Chec Corvette V/8 into an Rv-7 :rice: :rice:

ZoomZmZm2ndGen 02-14-2003 05:01 PM

    Attached : 350Eng.rx7_90.Jpeg

    75 Repu 02-14-2003 05:04 PM

    AAGGGHHH!!! My eyes.. Actually it looks nice.. but a lil messy with the wires and stuff..

    94touring 02-14-2003 05:04 PM


    Originally Posted by monstermazda' date='Feb 12 2003, 12:35 PM
    no it was to slow with the rotary plus reliability was out of the question...

    i think that the 7 with a v-8 will kill all who try me....



    i have seen a 7 vith a v-8 in it and he was running 11's he said it was the cheapest and fastest drag car he had ever made..

    Too slow with the rotary? You have obvoiusly never ridden in a single turbo rx7 before. A v-8 has its reliability advantages, but the rx7 isn't so unreliable itself as long as its tuned properly. Put that v-8 in there and race a single turbo'd FD and see what happens.

    But I actually see nothing wrong with doing the swap as long as its done carefully to keep the weight characteristics and handling of the car the same.

    Racer X 02-14-2003 05:09 PM

    Damn did they have to post pics of that setup?I just ate. :puke:

    rx7machine 02-14-2003 05:09 PM

    The corvette engine in a 7.. That's a new one on me.. :bigthumg:

    75 Repu 02-14-2003 05:12 PM

    There is a guy on some online truck gallery with a Repu. He actually swapped out the rotary on the Repu to stick a V-8 in there.. That sucked..

    Racer X 02-14-2003 05:14 PM


    Originally Posted by 75 Repu' date='Feb 14 2003, 03:12 PM
    There is a guy on some online truck gallery with a Repu. He actually swapped out the rotary on the Repu to stick a V-8 in there.. That sucked..

    Was there a mullet requirement to drive it after that. :mullet: https://www.nopistons.com/forums/pub...#>/biggrin.png

    monstermazda 02-17-2003 02:21 PM

    yeah it probly will icrease the value of my car though because my brother bought it for $900 it was a complete piece of **** inside.. and under the hood with a nearly blown 1.3b and a slipping clutch..



    i see rx-7's in the news paper forsale for under a grand almost every day around here i only wish people would realize what a valueable car they are selling.. mine has no rust or body damage anywhere so i decided to build a drag car out of it..



    as far as racing a turbo rotary bring it on baby(;



    when i get my car done i will be more than willing to share my tire smoke...



    with the easy 50/50 balancing i will do.. i will even let you pick the track..

    just remember my 7 is heavily moded...

    monstermazda 02-17-2003 02:38 PM

    i have rode in a 3rd gen with a 545hp LT-1 and a 6speed trans..

    trust me they haul.... https://www.nopistons.com/forums/pub...



    no rotar i have ever rode in has come close to being as fast as that car..



    plus it was still 50/50 weight ratio.. https://www.nopistons.com/forums/pub...DIR#>/wink.png

    Racer X 02-17-2003 11:13 PM


    Originally Posted by monstermazda' date='Feb 17 2003, 12:38 PM
    i have rode in a 3rd gen with a 545hp LT-1 and a 6speed trans..

    trust me they haul.... https://www.nopistons.com/forums/pub...#>/BURNOUT.gif



    no rotar i have ever rode in has come close to being as fast as that car..



    plus it was still 50/50 weight ratio.. https://www.nopistons.com/forums/pub...DIR#>/wink.png

    remember this......Its 50/50 with a rotary engine.Not a heavywieght V8.Yeah a 545hp LT1 would move but so would a 545hp FD engine.Except rotary would be lighter. :yum:

    Racer X 02-17-2003 11:15 PM


    Originally Posted by monstermazda' date='Feb 17 2003, 12:38 PM
    no rotar i have ever rode in has come close to being as fast as that car..

    Then you never rode in a modded one then? https://www.nopistons.com/forums/pub...#>/biggrin.png They can go just as good.With the right tuning.The domestic iron only has a torque advantage.

    rx7machine 02-17-2003 11:25 PM


    Originally Posted by monstermazda' date='Feb 17 2003, 03:38 PM
    i have rode in a 3rd gen with a 545hp LT-1 and a 6speed trans..

    trust me they haul.... https://www.nopistons.com/forums/pub...#>/BURNOUT.gif



    no rotar i have ever rode in has come close to being as fast as that car..



    plus it was still 50/50 weight ratio.. https://www.nopistons.com/forums/pub...DIR#>/wink.png

    Still 50/50? No way.. :squint:

    monstermazda 02-18-2003 02:21 PM

    you wanna bet..



    the v-8 conversion only adds 200 lbs. and the car had more than that stripped out of itso if any thing it was lighter in the front than a stock 7...



    i feel sorry for thoose who don't belive me..



    as far as a moded rotary they may be fast but given the same amount of money and time mine would be faster because a v-8 is much cheaper and easier to build up..

    dac 02-19-2003 12:03 AM

    A Chevy V8 weighs 500-550 the Rotary is about 280. This will be like having a fat chick riding around on your hood.. https://www.nopistons.com/forums/pub...#>/biggrin.png



    I don't think the idea is a bad one, but I wouldn't compare it to a RX7, because I don't think that is a fair one.



    You will have more low power and much more torque, but without a way to put to to the ground (wheel tubs & slicks?) You have more tendancy to break the tires loose. (V-8 Vega syndrome).



    Now if you could get a transfer case, Mazda 4x4 front spindles... you might have something here.

    monstermazda 02-19-2003 10:51 AM

    no i have 12" slicks on mine and as far as the weight goes the rotary only weighs 265lbs trust me i weighed mine.. but all the components to run the rotary weigh much more.. the cats. are all cast iron and all the engine managment **** that i will not have all add up fast.. the v-8 conversion only adds 200 pounds and that is if it is stock..



    my engine has alluminum heads and intake manifold..



    i have done the math and with my car i will only have a 50lbs difference...

    which i fixed by adding 50 lbs of lead to the rear of the car..

    LannyRX7 03-18-2003 12:14 AM

    What about if you had everything needed for a V8 swap and your 1st gen's motor blew up...what then?

    SPOautos 03-18-2003 10:15 AM


    Originally Posted by monstermazda' date='Feb 19 2003, 04:51 PM
    no i have 12" slicks on mine and as far as the weight goes the rotary only weighs 265lbs trust me i weighed mine.. but all the components to run the rotary weigh much more.. the cats. are all cast iron and all the engine managment **** that i will not have all add up fast.. the v-8 conversion only adds 200 pounds and that is if it is stock..



    my engine has alluminum heads and intake manifold..



    i have done the math and with my car i will only have a 50lbs difference...

    which i fixed by adding 50 lbs of lead to the rear of the car..

    So this was pretty much a month ago and you had on 12" slicks.....if you had on slicks a month ago I think its a good assumption that you've been to the drag strip. So share with us your results so I can compare your V8 powered 7's mph to mine. I just want to see if its true that you can beat any rotary.....well, its not a big deal cause I already know its not true.



    And yea, so its going to be the same weight after you strip it down.....you can strip the same stuff out with the rotary as well and we are back to it being lighter.



    Anyway, if the V8 is what you want then go for it but dont think that its better. Well if might be if you dont have the knowledge to tune a high tech car. Its ashame you just didnt spend on that V8 swap time on learning how to tune instead.



    STEPHEN


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