Ls1 Rx-7

[Spaz]

No problemo I once was in the same position

dude... there is a guy in philly that put a LS6 in to a nissan 240... he posted it on here not to long ago... like a year or two...

[XcamaroZ06X]

hahah thats like the ls1 powered 240 that was on pinks not too long ago lol

[Spaz]

hahah thats like the ls1 powered 240 that was on pinks not too long ago lol

i'll have to youtube that... i hate pinks... far to rice oriented...

[JHayesLS1]

"I want 50 cars!!"

WE GOT A RACE!!11

[Spaz]

"I want 50 cars!!"

WE GOT A RACE!!11

that is why i don't watch that show...

[JHayesLS1]

I like watching the episode where the host tried to be a badass and fell off the bike. I laughed my ass off

[Spaz]

I like watching the episode where the host tried to be a badass and fell off the bike. I laughed my ass off

i got that e-mailed to me like 100 times the day after... taht was hysterical!!!

[KLEEMANN]

The FD RX-7 motor is a big fail. The LS1 swap is a reliability mod as well as badass performance.

Incorrect. People that mod them the same way a piston motor can be modded are the "Fails". You starve a piston motor of fuel, it can cope/survive...do the same thing to a rotary & it's instant detonation (a blown motor - the apex seals snap under the force of ~12,000 psi).

If you keep the A/F ratio in check (ie add fuel when adding mods that lean the motor such as CAI, a midpipe, a bigger IC, more than stock boost levels, etc), the motors last a long time.....I sold my Turbo II with 126K miles & it still ran fine.

[bodyman5000]

Incorrect. People that mod them the same way a piston motor can be modded are the "Fails". You starve a piston motor of fuel, it can cope/survive...do the same thing to a rotary & it's instant detonation (a blown motor - the apex seals snap under the force of ~12,000 psi).

If you keep the A/F ratio in check (ie add fuel when adding mods that lean the motor such as CAI, a midpipe, a bigger IC, more than stock boost levels, etc), the motors last a long time.....I sold my Turbo II with 126K miles & it still ran fine.

You and reality don't agree. A bad fuel injector could never happen on accident. Nobody could every accidentally overheat their car in the summer. And all of those ads in the paper for Rx7s with 100000 miles on them (50000 miles on a rebuilt engine) are just a coincidence.

I feel sad when people get all piston versus rotary. MY olds 455s were all piston engines. Many original factory builds with low miles. You can't rev them past 5500 without blowing them up. Sorry, shit happens. I broke them all.

An LS1 is a marvelous engine that is very reliable. I know, I had one and put 60000 miles on it driving it like I stole it. It ran like knew when I sold it despite the fact that I started it every morning and got it sideways through first and second before the oil even had a chance at getting warm.

I bet you could have bought a 98 z28 brand new and never once changed the oil and exceeded the average engine life of a rotary. Someone with one with low miles should try it.


FDs are cool cars and if you aren't a normal man and don't like torque then they are even better.

[JHayesLS1]

I know a guy with one, he has dropped alot of money into the car but he knew he would have to when he bought the car. He absolutely loves the car though.

[KLEEMANN]

You and reality don't agree. A bad fuel injector could never happen on accident. Nobody could every accidentally overheat their car in the summer. And all of those ads in the paper for Rx7s with 100000 miles on them (50000 miles on a rebuilt engine) are just a coincidence.

I feel sad when people get all piston versus rotary. MY olds 455s were all piston engines. Many original factory builds with low miles. You can't rev them past 5500 without blowing them up. Sorry, shit happens. I broke them all.

An LS1 is a marvelous engine that is very reliable. I know, I had one and put 60000 miles on it driving it like I stole it. It ran like knew when I sold it despite the fact that I started it every morning and got it sideways through first and second before the oil even had a chance at getting warm.

I bet you could have bought a 98 z28 brand new and never once changed the oil and exceeded the average engine life of a rotary. Someone with one with low miles should try it.


FDs are cool cars and if you aren't a normal man and don't like torque then they are even better.

Reality? Funny stuff coming from someone whom has never owned a rotary. When you have built & ported over a THOUSAND 12A & 13B blocks (as a hobby) during the last 27 yrs, run nitrous, single & twin turbo configurations in addition to supercharging, standard & ceramic seal sets, & ~ 20 different hand porting configs - we'll talk. Injectors don't just "go bad"...you:
1) have them pulled & increase their CFM rate in accordance with its mods
2) replace your fuel filter once every ~ 2 yrs

I'm at a loss why you mention your experience with your previous Olds 455s & how you blew them up (it's got nothing to do with rotary powerplants). And your point about some RX-7s in the paper (HINT: there are more piston for sale cars in the paper - point being?....especially for cars that ceased sale in the US over 13 yrs ago).

And please, my current FD puts out 316 rwtq in a 2700 lbs car (it's a daily driver that runs low 11s)....that is ~ 20 more rwtq than a 5.7L C5 powerplant...plenty. The wife's SLK puts out 512 rwtq so I'm more than familiar with it.

Bottom line - rotaries are very reliable if given appropriate attention to fuel
Some proof? The RX-7 has more IMSA victories than any car in history (112)...Porsche is 2nd with 62 with its 911 platform. Those conditions are a little more grueling than street traffic.

I will agree with you that the FD has 2 design weakness (which can be quickly fixed):
1) the stock twin turbo hoses should be swapped out for silicon (stockers dry rot over time causing irregular boost patterns), &
2) a bigger/more efficient radiator helps in keeping engine temps down (pretty doubtful you will overheat your motor with the stocker but it can indeed still get pretty hot in sustained stopped traffic when temps are over ~ 100 degrees - which can make make the car uncomfortable)

[Tnhillbilly]

I had a 1985 GSL-SE. It had 65,000 on it when I sold the car. It ran great. I still to this day wish I had never sold it!! I love my SS, but I would still love to own a 1994 Rx-7. that car is sweet!

[KLEEMANN]

I had a 1985 GSL-SE. It had 65,000 on it when I sold the car. It ran great. I still to this day wish I had never sold it!! I love my SS, but I would still love to own a 1994 Rx-7. that car is sweet!

The '85 GSLSEs are rare....the first RX-7 with the 13B. Dude - you had a rare one (the best first Gen made). Oh well, there are plenty of other cars that are fun (you've got one!) - it's just transpo anyway. I've got my eye on a new ZR1 (yellow, like my RX-7, of course!). Rock on!

[superchargedblackgto]

The '85 GSLSEs are rare....the first RX-7 with the 13B. Dude - you had a rare one (the best first Gen made). Oh well, there are plenty of other cars that are fun (you've got one!) - it's just transpo anyway. I've got my eye on a new ZR1 (yellow, like my RX-7, of course!). Rock on!

I will answer your question from a few pages back......the rotary is a horrible engine....sure you can get 455hp out of it, but it does have inherent problems......even if the a/f is right they go through plugs like NO OTHER!!!....besides rotary=0 torque....and if you argue that point I will show you dynos that prove I'm right....I Know a Good friend of mine just did a ls1 swap, am Im sure he will be glad to come on here and debate you....He KNOWS the rotory is an unreliable POS....
Brad

[superchargedblackgto]

Reality? Funny stuff coming from someone whom has never owned a rotary. When you have built & ported over a THOUSAND 12A & 13B blocks (as a hobby) during the last 27 yrs, run nitrous, single & twin turbo configurations in addition to supercharging, standard & ceramic seal sets, & ~ 20 different hand porting configs - we'll talk. Injectors don't just "go bad"...you:
1) have them pulled & increase their CFM rate in accordance with its mods
2) replace your fuel filter once every ~ 2 yrs

I'm at a loss why you mention your experience with your previous Olds 455s & how you blew them up (it's got nothing to do with rotary powerplants). And your point about some RX-7s in the paper (HINT: there are more piston for sale cars in the paper - point being?....especially for cars that ceased sale in the US over 13 yrs ago).

And please, my current FD puts out 316 rwtq in a 2700 lbs car (it's a daily driver that runs low 11s)....that is ~ 20 more rwtq than a 5.7L C5 powerplant...plenty. The wife's SLK puts out 512 rwtq so I'm more than familiar with it.

Bottom line - rotaries are very reliable if given appropriate attention to fuel
Some proof? The RX-7 has more IMSA victories than any car in history (112)...Porsche is 2nd with 62 with its 911 platform. Those conditions are a little more grueling than street traffic.

I will agree with you that the FD has 2 design weakness (which can be quickly fixed):
1) the stock twin turbo hoses should be swapped out for silicon (stockers dry rot over time causing irregular boost patterns), &
2) a bigger/more efficient radiator helps in keeping engine temps down (pretty doubtful you will overheat your motor with the stocker but it can indeed still get pretty hot in sustained stopped traffic when temps are over ~ 100 degrees - which can make make the car uncomfortable)

and I just read this....BUHAHAHAHA!!!!.....want to race?....I have that much rwtq out of the hole......you get that @ what 5000rpm?......LOL

[tonyjnjz]

The '85 GSLSEs are rare....the first RX-7 with the 13B. Dude - you had a rare one (the best first Gen made). Oh well, there are plenty of other cars that are fun (you've got one!) - it's just transpo anyway. I've got my eye on a new ZR1 (yellow, like my RX-7, of course!). Rock on!

now im not taking a shot at u like most others on here......you obviously know plenty about rotery engines and rx-7s........my question is why havnt more car manufactures used rotery engines if there so great??
The only reason i think there used at all is because there unique and somtimes people want somthing different......correct me if im wrong??

[KLEEMANN]

I will answer your question from a few pages back......the rotary is a horrible engine....sure you can get 455hp out of it, but it does have inherent problems......even if the a/f is right they go through plugs like NO OTHER!!!....besides rotary=0 torque....and if you argue that point I will show you dynos that prove I'm right....I Know a Good friend of mine just did a ls1 swap, am Im sure he will be glad to come on here and debate you....He KNOWS the rotory is an unreliable POS....
Brad

Really? I'll argue the point.





And bring your little buddy on over. I have rebuilt stock rotaries with 250,000 plus miles.

[KLEEMANN]

and I just read this....BUHAHAHAHA!!!!.....want to race?....I have that much rwtq out of the hole......you get that @ what 5000rpm?......LOL

Torque is how MUCH work is done, Hp is is how FAST work is done (this is why we don't see Diesel truck engines in F1 cars).

Do I want to race? Well, seeing how you are in Indiana & I'm in California - probably not. How much power is your GTO making - maybe post your dyno?

[KLEEMANN]

now im not taking a shot at u like most others on here......you obviously know plenty about rotery engines and rx-7s........my question is why havnt more car manufactures used rotery engines if there so great??
The only reason i think there used at all is because there unique and somtimes people want somthing different......correct me if im wrong??

Tony, thanks....it's an excellent question. Chevy was going to put a 4 rotor engine in the Corvette in the early 70s but the engine was an emissions PIG. And although the rotary was improved upon later, it remained an emissions pig for Chevrolet so Mazda remained the only manufacturer to clean it up adequately to meet CAFE standards here in the US. It was also too expensive to tool up by the big 3.... a lot of people & companies stood to lose quite a bit if the rotary became widespread. It's an Ok powerplant but it's not fuel efficient & remains an emissions pig. 1 company (Mazda) worked on it as a side job for ~ 40 yrs while the rest of the world has been refining piston technology for over 100 yrs....no way the rotary is going to compete with that R&D & resource budget. Hope this helps answer your query. Cheers.

[superchargedblackgto]

This is the only dyno I have of it.........It's just a little faster now....but no chart to prove it.....LOL...latest, tuning by ME...and a/f....NO #'s
Some work has been done since this........however My tq curb....even here looks a bit better....LOL