Motor Swap Ls1
??
04-08-2007, 05:13 PM
#104
The anti-ricer
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Originally Posted by Charles R. Hill
We may see an LS-powered RX-8 sooner than most might think. If my Renesis rebuild/porting doesn't yield the results I am seeking then I will ditch this summer and prepare for an LS install, if it is possible within reason, for next season. GMPP has an LSX block, and all the rest of the stuff, plus the aftermarket covers whatever else I may need. Also, GMPP has the LS-7 available for $15K. If I were to go that far with it I might keep it simple and build myself a street/strip Powerglide transmission and whichever stick-axle rear end would fit.
And the reason to get an RX8 and swap the motor is b/c i love the car, great, nice looking, needs power though and i dont see many reliable parts that yeild big power that are worth the time and money.
I am familiar with the LS1 and there is a HUGE market for mods and they are cheap too. It would also make a nice weekend car
04-08-2007, 08:09 PM
#105
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Originally Posted by mikefrombarrie
the question is WHY?!?!
I am really against the whole idea of putting in v-8s into Mazda RX models, The whole point of the RX models is that they have a rotary motor. If you dont like the rotary motor then dont buy the RX or sell the car, and get a corvette.
.
I am really against the whole idea of putting in v-8s into Mazda RX models, The whole point of the RX models is that they have a rotary motor. If you dont like the rotary motor then dont buy the RX or sell the car, and get a corvette.
.
04-08-2007, 09:32 PM
#106
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Originally Posted by jordanjerome
I just want to know what they did to get the exhaust to sound like its still an 8 and rx7
-hS
07-26-2007, 02:12 PM
#108
clutch burner
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paging dr hill
We may see an LS-powered RX-8 sooner than most might think. If my Renesis rebuild/porting doesn't yield the results I am seeking then I will ditch this summer and prepare for an LS install, if it is possible within reason, for next season. GMPP has an LSX block, and all the rest of the stuff, plus the aftermarket covers whatever else I may need. Also, GMPP has the LS-7 available for $15K. If I were to go that far with it I might keep it simple and build myself a street/strip Powerglide transmission and whichever stick-axle rear end would fit.
07-31-2007, 10:21 PM
#110
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I've spent too many weekends reading everything I could about putting LSs into FDs and E36s. Both seem like good ideas until you realize what's really entailed, and how good the results will be.
This isn't a flame, it's just my well-thought-out opinion on the topic:
There is already a 3100-lb car with an LS motor in it, bitchin' fully-adjustable forged aluminum double-A-arm suspension at all corners, RWD, and that takes 285s on the front and 315s on the back with no fender mods. It can definitely handle that much power and a lot more. It's well-supported in the aftermarket. There are awesome versions of every upgrade, and not so awesome ones. You can get it down under 2800 lbs. with a little committment and still have a full interior street car. Set up right, it handles like a big, 400-bhp Miata. If that sounds good to you, realize that this car is already built, so you can spend the next six to 18 months of evenings and weekends hanging out with your friends, girlfriends, and family, and going to the track, instead of having your head up the **** of some POS science project. The car is called a Corvette. If I ever decide I just have to have 400 bhp, I'll sell whatever track car I have and buy one. Spoon me all to heck, they even cost less than RX-8s. The car is called a Corvette.
This isn't a flame, it's just my well-thought-out opinion on the topic:
There is already a 3100-lb car with an LS motor in it, bitchin' fully-adjustable forged aluminum double-A-arm suspension at all corners, RWD, and that takes 285s on the front and 315s on the back with no fender mods. It can definitely handle that much power and a lot more. It's well-supported in the aftermarket. There are awesome versions of every upgrade, and not so awesome ones. You can get it down under 2800 lbs. with a little committment and still have a full interior street car. Set up right, it handles like a big, 400-bhp Miata. If that sounds good to you, realize that this car is already built, so you can spend the next six to 18 months of evenings and weekends hanging out with your friends, girlfriends, and family, and going to the track, instead of having your head up the **** of some POS science project. The car is called a Corvette. If I ever decide I just have to have 400 bhp, I'll sell whatever track car I have and buy one. Spoon me all to heck, they even cost less than RX-8s. The car is called a Corvette.
08-01-2007, 10:28 AM
#113
clutch burner
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I've spent too many weekends reading everything I could about putting LSs into FDs and E36s. Both seem like good ideas until you realize what's really entailed, and how good the results will be.
This isn't a flame, it's just my well-thought-out opinion on the topic:
There is already a 3100-lb car with an LS motor in it, bitchin' fully-adjustable forged aluminum double-A-arm suspension at all corners, RWD, and that takes 285s on the front and 315s on the back with no fender mods. It can definitely handle that much power and a lot more. It's well-supported in the aftermarket. There are awesome versions of every upgrade, and not so awesome ones. You can get it down under 2800 lbs. with a little committment and still have a full interior street car. Set up right, it handles like a big, 400-bhp Miata. If that sounds good to you, realize that this car is already built, so you can spend the next six to 18 months of evenings and weekends hanging out with your friends, girlfriends, and family, and going to the track, instead of having your head up the **** of some POS science project. The car is called a Corvette. If I ever decide I just have to have 400 bhp, I'll sell whatever track car I have and buy one. Spoon me all to heck, they even cost less than RX-8s. The car is called a Corvette.
This isn't a flame, it's just my well-thought-out opinion on the topic:
There is already a 3100-lb car with an LS motor in it, bitchin' fully-adjustable forged aluminum double-A-arm suspension at all corners, RWD, and that takes 285s on the front and 315s on the back with no fender mods. It can definitely handle that much power and a lot more. It's well-supported in the aftermarket. There are awesome versions of every upgrade, and not so awesome ones. You can get it down under 2800 lbs. with a little committment and still have a full interior street car. Set up right, it handles like a big, 400-bhp Miata. If that sounds good to you, realize that this car is already built, so you can spend the next six to 18 months of evenings and weekends hanging out with your friends, girlfriends, and family, and going to the track, instead of having your head up the **** of some POS science project. The car is called a Corvette. If I ever decide I just have to have 400 bhp, I'll sell whatever track car I have and buy one. Spoon me all to heck, they even cost less than RX-8s. The car is called a Corvette.
08-01-2007, 11:58 AM
#114
clutch burner
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The answer to all of you asking why is simple, have you seen the astronomical price of a Renesis if you have to foot the bill when yours blows? After labor and the core you're up to about 6 grand..and not only that, you wont have the peace of mind that the motor you just dropped 6 grand on, will last you another 30k miles. see: https://www.rx8club.com/series-i-trouble-shooting-95/new-engine-lasts-3-days-122148/ he's on his 4th, FOURTH, reman engine. At least with a v8 or even a 2jz, you'll know it will get atleast double the life of a renesis at maybe half the cost with 2-3-4 times the power! Anyway, these types of builds are far and few and whomever is actually considering it wouldn't give 2 ***** about the people that think a rotary motor belongs in this car because mazda made it that way.
08-01-2007, 12:22 PM
#116
the Doctor
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with the sky's the limit knda attitude im kinda feeling the need for some deutschland under the hood...specifically enticing lately has been the 4.2L v8 from audi
i've also thought about the 2.7l biturbo v6, the E46 M3 engine (s52?)...
mmm power and btw if it looks like an 8 and drives like an 8 its still an 8 and that will prolly be the case with an engine swap imho. plus go with an 8 cylinder engine and you can call it an mx-8 and it will be like a double entendre
i've also thought about the 2.7l biturbo v6, the E46 M3 engine (s52?)...
mmm power and btw if it looks like an 8 and drives like an 8 its still an 8 and that will prolly be the case with an engine swap imho. plus go with an 8 cylinder engine and you can call it an mx-8 and it will be like a double entendre
08-01-2007, 08:49 PM
#117
RX-8 = Japanese MG
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<hijack>
Why not drop in an Evo engine all modded to hell? That's 450 WHP if u do it right, and it won't totally bugger the balance/handling of the car.
</hijack>
Why not drop in an Evo engine all modded to hell? That's 450 WHP if u do it right, and it won't totally bugger the balance/handling of the car.
</hijack>
08-01-2007, 09:10 PM
#118
'03 Dodge Viper
I've spent too many weekends reading everything I could about putting LSs into FDs and E36s. Both seem like good ideas until you realize what's really entailed, and how good the results will be.
This isn't a flame, it's just my well-thought-out opinion on the topic:
There is already a 3100-lb car with an LS motor in it, bitchin' fully-adjustable forged aluminum double-A-arm suspension at all corners, RWD, and that takes 285s on the front and 315s on the back with no fender mods. It can definitely handle that much power and a lot more. It's well-supported in the aftermarket. There are awesome versions of every upgrade, and not so awesome ones. You can get it down under 2800 lbs. with a little committment and still have a full interior street car. Set up right, it handles like a big, 400-bhp Miata. If that sounds good to you, realize that this car is already built, so you can spend the next six to 18 months of evenings and weekends hanging out with your friends, girlfriends, and family, and going to the track, instead of having your head up the **** of some POS science project. The car is called a Corvette. If I ever decide I just have to have 400 bhp, I'll sell whatever track car I have and buy one. Spoon me all to heck, they even cost less than RX-8s. The car is called a Corvette.
This isn't a flame, it's just my well-thought-out opinion on the topic:
There is already a 3100-lb car with an LS motor in it, bitchin' fully-adjustable forged aluminum double-A-arm suspension at all corners, RWD, and that takes 285s on the front and 315s on the back with no fender mods. It can definitely handle that much power and a lot more. It's well-supported in the aftermarket. There are awesome versions of every upgrade, and not so awesome ones. You can get it down under 2800 lbs. with a little committment and still have a full interior street car. Set up right, it handles like a big, 400-bhp Miata. If that sounds good to you, realize that this car is already built, so you can spend the next six to 18 months of evenings and weekends hanging out with your friends, girlfriends, and family, and going to the track, instead of having your head up the **** of some POS science project. The car is called a Corvette. If I ever decide I just have to have 400 bhp, I'll sell whatever track car I have and buy one. Spoon me all to heck, they even cost less than RX-8s. The car is called a Corvette.
Although, I'm still not totally sold on the Corvette. I may end up selling my 8, buying a Camaro SS, and using the leftover money to hit 550whp.
08-01-2007, 11:06 PM
#119
Need'd a Turbo
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I like all the swap ideas as mention above. I really like the 2.7t idea. I love that engine! I can see it now, with the intercoolers were the oil coolers are now and it looks all innocent but on is that not the case! Or if you could find it, go for the turbo v8 out of the audi rs6, no that would be insane, but probably a little too big. but i also like the m3 engine idea as well as the various v8 whether it be japanese, american or german. The evo idea is cool too. Someone on the rx7 club is doing that i believe. It might be an sr20, i cant remember but either would be cool and the sr20 would be cheap, relatively speaking that is.
08-02-2007, 01:16 AM
#120
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Camaro is way better for drag racing due to its solid axle. Getting Vettes to launch is hell. On the other hand, a stock Vette with wheels and tires will go around corners better than almost any Camaro. Horses for courses...
The first thing to get squared away is the sump. The RX-8 engine sits directly behind the steering rack, and the rack is large diameter. So you would need a rear sump engine, and probably a smaller steering rack.
An LS is rear sump, so it could work. A Ford V8 drives its oil pump off the front of the cam, so the engine has to either be dry-sumped or sit too high. A Lexus/Toyota 1UZ is available with front, middle or rear sump, but unfortunately not a manual transmission. There are solutions, but there are other forums for those details.
xJZ-GTE are rear sump and bad-azz, but 2s are expensive. So you have the frustration of doing all that work and settling for the small one, or spending a bunch more money to make it what you actually wanted.
I like the idea of a turbo inline 4. Light and cheap. The only one that has a rear sump and comes RWD is a BP (Miata). Fortunately, it's almost free and likes boost. I almost bought one with the intent of repowering my E36, until it was pointed out that the engine really isn't the problem with the car. The SR20 and F20C are the other factory RWD installations, but their sump is in the front, right where the RX-8 steering rack is. The 4G63 requires some seriously custom tranny application, or settling for a crappy pickup truck tranny. Once it is north-south, you have to fabricate new everything because all the airflow stuff is pointing at the firewall, and the sump is still in the wrong place.
Swapping any German engine that isn't a flat six into almost anything else is just a bad idea. Expensive, fragile, and at the end of the day really just OK. Flat sixes are expensive, but less fragile and potentially bad-***. Plus, they sound like Le Mans.
I have yet to see an FD conversion with a PPF solution that didn't scare the heck out of me. No reason to think the 8 would be any different.
Assuming the details could be gotten right, I think I'd like the LS the best and a turbo BP a close second, but I'd still rather just buy a C5 Z06 and put some tires on it.
When you really get into all the options, how much it costs to do it right, and what your results would actually be, MrSuicideDoor and I are in perfect agreement. The only reason to do this is to prove "Because i want to, and because i can." And if you really can, you probably don't need the help of anyone here to do it.
The first thing to get squared away is the sump. The RX-8 engine sits directly behind the steering rack, and the rack is large diameter. So you would need a rear sump engine, and probably a smaller steering rack.
An LS is rear sump, so it could work. A Ford V8 drives its oil pump off the front of the cam, so the engine has to either be dry-sumped or sit too high. A Lexus/Toyota 1UZ is available with front, middle or rear sump, but unfortunately not a manual transmission. There are solutions, but there are other forums for those details.
xJZ-GTE are rear sump and bad-azz, but 2s are expensive. So you have the frustration of doing all that work and settling for the small one, or spending a bunch more money to make it what you actually wanted.
I like the idea of a turbo inline 4. Light and cheap. The only one that has a rear sump and comes RWD is a BP (Miata). Fortunately, it's almost free and likes boost. I almost bought one with the intent of repowering my E36, until it was pointed out that the engine really isn't the problem with the car. The SR20 and F20C are the other factory RWD installations, but their sump is in the front, right where the RX-8 steering rack is. The 4G63 requires some seriously custom tranny application, or settling for a crappy pickup truck tranny. Once it is north-south, you have to fabricate new everything because all the airflow stuff is pointing at the firewall, and the sump is still in the wrong place.
Swapping any German engine that isn't a flat six into almost anything else is just a bad idea. Expensive, fragile, and at the end of the day really just OK. Flat sixes are expensive, but less fragile and potentially bad-***. Plus, they sound like Le Mans.
I have yet to see an FD conversion with a PPF solution that didn't scare the heck out of me. No reason to think the 8 would be any different.
Assuming the details could be gotten right, I think I'd like the LS the best and a turbo BP a close second, but I'd still rather just buy a C5 Z06 and put some tires on it.
When you really get into all the options, how much it costs to do it right, and what your results would actually be, MrSuicideDoor and I are in perfect agreement. The only reason to do this is to prove "Because i want to, and because i can." And if you really can, you probably don't need the help of anyone here to do it.
08-15-2007, 01:16 AM
#122
You could easily street a 4G63 capable of 650+whp and tune it down to 400 for daily grinding if you wish. The problem is the trany.
An LS1 RX-8 is bound to happen, once the 8 gets cheaper and people can simply afford to take a sawzall to it.
For me, I would have to twin-turbo it, and make over 750-rwhp for me to want to do it. Otherwise I'll do a 13b-rew single turbo swap and shoot for just 450-rwhp.
08-15-2007, 10:17 AM
#123
Goat rider
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You people and your HP numbers!! TQ is where it's at with a V8. Just a plain stock cheap motor putting out 200hp and 330ish TQ (at what 3500rpms??) would be very fun to drive.
You all know after a kit comes out alot of people will do it, not many wanna risk the money to try.
You all know after a kit comes out alot of people will do it, not many wanna risk the money to try.
