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-   -   What made you convert? (https://www.rx7club.com/v-8-powered-rx-7s-299/what-made-you-convert-511756/)

eastcoastbumps 02-20-06 10:39 PM

What made you convert?
 
Well...what was it? Did you have tuning problems or a blown motor? Or was it something else?

rajahFD 02-20-06 11:10 PM

nearest rotary mechanic is 56 miles away. say my car doesn't run, i'd have to pay a tow truck around $220-$250 just there and back would be the same. i have a lot of friends that work on LS1's and know them inside out and they have parts laying around for them as well...and i wanted torque, lots of it.

i could punish this thing like there was no tomorrow, go to sleep, wake up and do it again the next day without a worry :)

Crash Test Joey 02-21-06 05:53 AM

First RX7 lasted 10 miles before the motor blew. V8 was cheaper to install since I had one already. This one had no motor or trans anyway when I bought it, and most of the factory harness was melted from an electrical fire.

Combined with the fact that I know jack shit about working on rotaries, and that my stock LS1 has a lot more hp and a WHOLE LOT more torque, yea that would pretty much explain it.

owen is fat 02-21-06 06:07 AM

understanding the LS1FC was an amazing machine is what made me build one for myself.
got a ride and a testdrive in a friends LS1FC.
got the same in a nonturbo FC that was heavily modded, even autox'd it.
also drove an S2000 at autox and around town.
decided I could make an LS1FC that was still nimble and tossable but hella fast even with a stock LS1.... it worked and I've been loving it for a year and a half now. I'm just bummed out I didnt know about this stuff earlier! had I known, I would have had an LT1T56 swapped FC probably 6 or 7 years ago, doh!

stilettoman 02-21-06 06:16 AM

Lets not go on with all these lame excuses - the fact is we all suffer from a form of insanity. As I explained here once before, it isn't beating some ricer away from the stoplight - for me it is the sound of all those car alarms when I drive into a parking garage, blended with the thunder of my engine!

InMyWhiteTII 02-21-06 08:13 AM

How can you argue the power : cost : reliability ratios?

Michael_Rudy 02-21-06 01:50 PM

For me it was the gas milage to power ratio. But saying that, i still have many Rotary powered cars that make alot of power, the gas milage is just horrible

bugg1 02-21-06 06:30 PM

I rode in one. That was all it took.

eastcoastbumps 02-21-06 10:53 PM

Thanks for your input guys. I picked up a '93 with a blown motor and I'm in a tough spot. I'd like to put a rotary back into it and go out and try and win the road racing class all my friends are competing in. On the other hand, I could put an LS1 into it and have a more reliable car that I wouldn't have to trailer to events. But this puts me into a class that has no competition (its the class for cars with V8s power from another manufacterer) and thats not much fun. But neither is fixing a rotary!

Kalifornia087 02-22-06 08:42 AM

I bought one without a motor or tranny just to do a v8 swap. I mean, I love the way my fb looks, and with a stock 302 it will pull mid-high 13 second quarter mile times on street tires... and that is plenty of power for me to drift.. that is with the STOCK 302... How can you not like that?

DCrosby 02-22-06 01:09 PM

I went through 3 Motors, I wrecked One, Blew an apex seal on the new car, rebuilt, and found out the turbo(s) were shot, went single, hoping for 400 RWHP, got it tuned by Steve Kahn, and the apex seals warped, (Not his fault) I think they were warped prior to him getting to the car.

The motor finally let go on a bad tank of gas... and I was DONE....

Estimates came in around $8K+ to get everything back running, just to be where I was supposed to be $8k ago anyways...

That with the fact that I lost all respect for the local mechanic I used to go to since most likely it was his build that caused this mess.... so I'd have to go further to get to a new mechanic that I could try and build a relationship with...

In the short run it's costing me more, but going N.A., bettwer milage, and having my pick of chevy mechanics in the area, are all ++ for me...

I figured I had given this a chance, and I firmly believe that a stock FD motor, as well as Renesis, can be reliable if taken care of properly... I want to tinker and upgrade, and that's not going to work with those motors....

-DC

wrxracer55 02-22-06 02:26 PM

Carrol Shelby. The man was my inspiration. I just looked at the power to weight ratio, and couldn't walk away.

digitalsolo 02-22-06 03:39 PM

I bought my RX7 for 700 dollars as a daily driver/beater to keep miles off of my GTP (which is now in collector car status). I figured it was a car I could drive daily and have fun and tinker with.

Then I found out how enjoyable it was to drive...

Then I fixed the body damage and replaced the interior to make it look decent...

Then I upgraded to TII brakes/suspension...

Then I started pricing TII swaps... and realized the cost/benefit ratio was too low to be worth it; While searching I found V8RX7.com and it dawned on me that "hey, you can fit a V8 in there..."

Then I found a Camaro locally with a "383 LT1" in it. Turned out to be a blown 305 (blown up, not supercharged ;) ), but led me to a TPI injected built SBC 355, which then went carb, and was then pulled out for my current LS1 setup...

Then new paint, more bodywork, S5 conversion, more interior work, tint, some power accessories, better wheels....

Now it will either go F/I or big cube eventually, if I don't just sell it and build an FD or 69 Camaro first. :)



It's a sickness I tell ya.

Merc63 03-06-06 12:40 PM

I had built a lot of hot rods and road race cars. I had built a number of autocross and road race rotary cars, but the FC was the first with a 6 port 13B. After a year of autocrossing it successfully, one day it simply decided not to start. The engine was locked up. In fact, the whole rear half of the engine had destroyed itself apparently. Unlike the 12A and original 13B, it was going to coat a bit more than $300 to rebuild it. And all the rebuilt rotaries I had know of, both homebuilt and pro built, while lasting long enough to go racing with, never went very far on the street. Especially when modded to make good power. Rebuilding the stock engine was going to cost $2500 (in 1993 dollars) Building a turbo rotary for it was going to cost double that at a minimum.

While the enigne was out, I noticed how big the engine compartment really was. Measured up a small block Ford sitting on an engine stand at the shop, looked at my car (which was already painted candy blue with white stripes) and thought "Cobra Daytona!" So for less than the cost of a stock 145 hp rebuilt rotary of uncertain durability, I built the high hp Ford 302 powered autocrosser that had all the atributes of the FC with none of the drawbacks. I simply wanted to build something that hadn't been done before.

http://mywebpages.comcast.net/adesso/rex1.wmv
http://mywebpages.comcast.net/adesso/rex2.wmv
http://mywebpages.comcast.net/adesso/rex3.wmv

Mind you, these runs were also on 225/50-15 Yokohama A008 RSIIs on 15x7 wheels...


And now, 13 years later, we have a huge community of V8 RX7s...

fcs rule 03-06-06 01:40 PM

for me i bought the car then had low compression, rebuilt the motor 5000 dollars later and only 10k on the motor and now i have low compression again! i am not going to spend another 5k on a motor that is going to last me 10k miles, v8 swap is a lot cheaper then rebuilding the motor again! i am just getting started with my swap and i am having fun already! can't wait to get it on the road!

custom13B 03-07-06 10:27 PM

For me I decided to go with a LT1 after rebuilding my 5th rotary. I was tired of special ordering parts and waiting...then waiting more as my precious NY summer months went by and the Mazda sat not running in the garage. Then there was cost and cost of operation..not to mention misprints in my mazda factory service manual..which cost me another rebuild. I baught a GM car with the supercharged 3800 V6 and use it as my daily driver. I changed the pulleys and chipped the ECU producing 300+ OBD2 legal HP. It may be a big heavy car but I love the torque and reliability! I also love the fact any local book store has 90% on the info I need in readily available books right on the shelf. I cant tell you how many RX-7 manuals I bought on ebay because they were out of print and still didnt answer all questions! let's just say Ive been around the block a few times,Shawn

audiobot7 03-08-06 12:18 AM

Only 4 motor here. :)

jimlab 03-08-06 12:45 PM

I actually bought a 20B, but was forced to convert to a domestic V8 at gunpoint, and what are you going to do with a gun in your face? :D

rotorbrain 03-08-06 03:04 PM

haha, jim. . . the rx7 community needs to know who put that gun to your head. . . dont know if its good or bad. . . you put us through a saga of v8 upgrade, but you more than likely would have had the car running years ago if you stuck with a 20b. :D

digitalsolo 03-08-06 03:50 PM


Originally Posted by custom13B
For me I decided to go with a LT1 after rebuilding my 5th rotary. I was tired of special ordering parts and waiting...then waiting more as my precious NY summer months went by and the Mazda sat not running in the garage. Then there was cost and cost of operation..not to mention misprints in my mazda factory service manual..which cost me another rebuild. I baught a GM car with the supercharged 3800 V6 and use it as my daily driver. I changed the pulleys and chipped the ECU producing 300+ OBD2 legal HP. It may be a big heavy car but I love the torque and reliability! I also love the fact any local book store has 90% on the info I need in readily available books right on the shelf. I cant tell you how many RX-7 manuals I bought on ebay because they were out of print and still didnt answer all questions! let's just say Ive been around the block a few times,Shawn

300 HP with a pulley and a PCM? Me no thinky so.

You been listening to Intense-Racing or something? ;)

-Blake McBride, President Fort Wayne Club Grand Prix

Drache sieben 03-14-06 02:05 AM

Loved my rotary but when it the time finaly came for a rebuild the price nocked me on my ass. I saw the price of a JDM spec VG30 and said thats for me ;)

1Seven4Me 04-01-06 04:26 AM

in june of last year, my younger brother took his RX7 to the nearby rotary shop.... hayes rotary. he had a dead engine & I had said that i'd never touch it.... it was a dang rotary. he put down a $2000 deposit. and waited, and waited, and.... they went bankrupt. we picked up the car in November, no motor in it, just some parts. he was hosed. so we started doing research on engine swaps for the RX and I decided to start my own as well... i'd done a jeep swap once & swore not to do it again. but i wanted a go-fast toy... who knew that him getting reamed by a bad rotary shop would end up here.

andrewb70 04-01-06 08:36 AM

When are you guys going to stop ripping the souls out of RX7s?

Andrew

fastcarfreak 04-01-06 10:12 AM


Originally Posted by andrewb70
When are you guys going to stop ripping the souls out of RX7s?

Andrew


when their souls can produce big power, mucho reliability, and better fuel economy :)

stilettoman 04-01-06 12:41 PM

"When are you guys going to stop ripping the souls
out of RX7s?"

Maybe when the assholes in Hiroshima decide that they want their cars to keep running, and start to sell the monopoly parts for an affordable price.

All these perfectly serviceable cars being scrapped, and all these shops trying to make a profit by using marginal parts is directly attributable to Mazda corporate policy.


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