V8 conversion for FD3s
10-04-01 | 04:32 PM
#101
Originally posted by jimlab
It probably could have been done for $15k, if I'd made some different decisions. However, I spent a lot of money on parts to ensure durability, high rpm stability (and capability), and to reduce rotating assembly weight wherever possible. Not only will it spin to 8k (easily), but it'll get there very quickly, and it weighs substantially less than a stock LT1 now.
It probably could have been done for $15k, if I'd made some different decisions. However, I spent a lot of money on parts to ensure durability, high rpm stability (and capability), and to reduce rotating assembly weight wherever possible. Not only will it spin to 8k (easily), but it'll get there very quickly, and it weighs substantially less than a stock LT1 now.
10-04-01 | 09:55 PM
#103
Rotary Enthusiast
Joined: Feb 2001
Posts: 867
Likes: 0
From: Nor-Cal U.S.A.
Originally posted by jimlab
At the rate my engine is coming together, it might be done in December, so chances are good that even someone starting right now will beat me to having a running car.
I almost fell off the NA truck today, but the 90 lb. weight gain and umpteen customizations required to mount the supercharger I was considering changed my mind. Guess I'll have to settle for around 700 horsepower.
For anyone interested, here's the 421 cid supercharged LT1 under construction by the owner of the shop building my engine... it'll be pushing nearly 4-figure horsepower.
http://www.c-zone.net/markm/blown421/
At the rate my engine is coming together, it might be done in December, so chances are good that even someone starting right now will beat me to having a running car.
I almost fell off the NA truck today, but the 90 lb. weight gain and umpteen customizations required to mount the supercharger I was considering changed my mind. Guess I'll have to settle for around 700 horsepower.
For anyone interested, here's the 421 cid supercharged LT1 under construction by the owner of the shop building my engine... it'll be pushing nearly 4-figure horsepower.
http://www.c-zone.net/markm/blown421/
What shop is building your engine and where are they located?
Later, Jeff
10-05-01 | 01:29 AM
#104
Senior Member
Joined: May 2001
Posts: 625
Likes: 0
From: Los Angeles, CA
Originally posted by sejanus
In Australia the Rotary is *not* considered to be unreliable. At least , not from the automotive crowds that I hang out with.
* My own one - motor overheated at 106,000 km's due to first catalytic convertor getting blocked. Car was purchased in 1992, motor overheated in 1999.
* A friend of a friend - single turbo conversion on the car when it was 12,000 km's old. Running approximately 450hp at the motor with a haltech e6k. Car is now on 110,000km's and was purchased in 1995. Still original motor and feels fresh.
* A friend - 1992 model, made 126,000km's on stock motor before the car overheated due to a problem with the coolant system at a track day in very hot weather last november.
* Another friend - 1996 model, has done 168,000 km's (not a typo) and is still on original motor.
* Last but not least, a 1995 "RX7 SP" (factory modified limited edition), 77,000 km's and just recently had a compression test in preperation for selling and was flawless.
In Australia the Rotary is *not* considered to be unreliable. At least , not from the automotive crowds that I hang out with.
* My own one - motor overheated at 106,000 km's due to first catalytic convertor getting blocked. Car was purchased in 1992, motor overheated in 1999.
* A friend of a friend - single turbo conversion on the car when it was 12,000 km's old. Running approximately 450hp at the motor with a haltech e6k. Car is now on 110,000km's and was purchased in 1995. Still original motor and feels fresh.
* A friend - 1992 model, made 126,000km's on stock motor before the car overheated due to a problem with the coolant system at a track day in very hot weather last november.
* Another friend - 1996 model, has done 168,000 km's (not a typo) and is still on original motor.
* Last but not least, a 1995 "RX7 SP" (factory modified limited edition), 77,000 km's and just recently had a compression test in preperation for selling and was flawless.
* blown @ 65,700 miles
* blown @ 68,200 miles
* 78,100 miles and still going
* 104,000 miles and stil going
Not huge numbers, and not unlike what people are seeing in the states. Quite a bit less than what you'd see on a piston engine, however.
Non turbos do seem to be a bit more reliable. The '84 & '85 GSL-SE's had 3mm Apex seals and lasted forever... but their 0-60 was 8.8 seconds.
I still haven't seen a V8 powered 7, but am dieing to. Someone here in Glendale is doing two - an LS1 and an LT1 (unless he changed his mind about the second one - haven't seen him in a while). Can't wait to see what happens. Good luck, jim!
01-14-06 | 12:41 PM
#106
Newbie
Joined: Jan 2006
Posts: 2
Likes: 0
From: North carolina
Ignorant Rx7 owners...
In a couple of posts people said they loved the creative side of the japanese in making the rotary engine and blah blah blah. BUT THE THING IS JAPANESE PEOPLE DID NOT INVENT THE ROTARY ENGINE! It was Felix Wankel (1902-1988)
A German mechanical engineer and inventor renowned for the creation of his rotary engine. He was born on August 13, 1902, in Luhran, Germany. GET IT STRAIGHT BITCHS lol
A German mechanical engineer and inventor renowned for the creation of his rotary engine. He was born on August 13, 1902, in Luhran, Germany. GET IT STRAIGHT BITCHS lol
01-17-06 | 03:48 PM
#112
Newbie
Joined: Jan 2006
Posts: 2
Likes: 0
From: North carolina
Lol i realise this post was old as crap but i found it while looking for v8 conversions on google. i thought what the heck no ones gona see this and or care but what ever i registered and made the post! sorry for diging up the past
01-18-06 | 08:51 AM
#114
Newb Photog
Joined: Jul 2001
Posts: 2,171
Likes: 0
From: new jersey
Wow, times have changed:
Originally Posted by jimlab
Will the Z06 drivetrain fit? Nope, and for several reasons.
1) The LS6 is the same size, dimensionally, as the LS1, which means that it's about 1.5 inches wider than the LT1, and another inch taller. The throttle body of the LT1 comes within hairs of the hood (except on my car, and you don't want to know how I'm getting around that without modifying my hood) and the LS1 will definitely not fit without hood modification, or modification to the cradle to drop the engine lower in the car, which would A) decrease ground clearance, B) screw up drivetrain geometry, and C) cause you to have to move the steering rack, negating one of the things we strived to keep stock.
2) The C5 (and Z06) are transaxle cars, of course. You would not be able to use the torque tube and bellhousing from a Corvette in the RX-7 without huge modification of the rear of the car. Yes, you could use a late model Camaro hydraulic T-56 6-speed, but they are quite a bit more expensive than the pull-type LT1 T56.
3) The LS6, as nasty as it is (405 horsepower, 400 ft. lbs. of torque in the '02 Z06) is only nasty in a car with a warranty on it. Half the lure of having the LS6 was that it was such a bad-*** motor in a car that came from the factory that way. You can build an LS1 or LT1 to make that much power with a cam and head swap, and in fact, 450 horsepower from an LT1 is so simple and cheap to make, you'd be nuts trying to buy an LS6 (since they're rare as rare right now) and trying to fit it into the car.
1) The LS6 is the same size, dimensionally, as the LS1, which means that it's about 1.5 inches wider than the LT1, and another inch taller. The throttle body of the LT1 comes within hairs of the hood (except on my car, and you don't want to know how I'm getting around that without modifying my hood) and the LS1 will definitely not fit without hood modification, or modification to the cradle to drop the engine lower in the car, which would A) decrease ground clearance, B) screw up drivetrain geometry, and C) cause you to have to move the steering rack, negating one of the things we strived to keep stock.
2) The C5 (and Z06) are transaxle cars, of course. You would not be able to use the torque tube and bellhousing from a Corvette in the RX-7 without huge modification of the rear of the car. Yes, you could use a late model Camaro hydraulic T-56 6-speed, but they are quite a bit more expensive than the pull-type LT1 T56.
3) The LS6, as nasty as it is (405 horsepower, 400 ft. lbs. of torque in the '02 Z06) is only nasty in a car with a warranty on it. Half the lure of having the LS6 was that it was such a bad-*** motor in a car that came from the factory that way. You can build an LS1 or LT1 to make that much power with a cam and head swap, and in fact, 450 horsepower from an LT1 is so simple and cheap to make, you'd be nuts trying to buy an LS6 (since they're rare as rare right now) and trying to fit it into the car.
01-18-06 | 08:43 PM
#115
Awe Stephen, go sell some butt-plugs, or did Skip finally sue your *** for stealing his stuff?
Originally Posted by SPOautos
The price was 45K + car which would be about 60K total, not 85K.......now on the other hand did you see the price of the TT Vette!!!!!!! I believe it was WAY over 100K!!!!! And beat the 7 BARELY!!!!!!! The 7 kicked his *** all the way around the track with a time about 7 seconds faster than the TT Vette. The reason the car kept breaking is because its a Peter Ferrel POS, I sent them a email saying they should have used Cams 3 rotor from Pettit Racing instead.
You guys that say you car sounds like a weed wacker just need to get a different exhaust, I have the Pettit resonated mp and Pettit duel tip cat back and it sounds very deep and mellow. The Apexi N1 sounds like **** I think and thats what most people around here seem to run.
I just dont get it. I like V8's and have always ran them up untill my 7, I just dont see the reliability in them. They are fine stock but when you start REALLY modding them to get into the very low 12's and 11's throught the 1/4 they are no longer reliable. I have a friend with a z28 and he's ALWAYS having some problem with it!!!!! Its bone stock with 100K and he has always maintained it within factory specs, its eating oil like a bitch and needs rebuilding now.
As for the speed issue, that doesnt hold water either, a bone stock FD with intake, full exhaust, Power FC running base maps and 12psi runs low 12's with street tires!!!!!! Put a intake and full exhaust on a z28 and see what you get.
I'm not bashing because I like v8's fine but i dont see much advantage in swithing over to one.
I think most of the problems stem from poor maintanence by the original owners. Then when the owners did want to get it serviced the Mazda dealer didnt know what the hell they were doing. Most of the original owners maintained it like it was a piston engine and that just kills them.
Anyway, later guys
You guys that say you car sounds like a weed wacker just need to get a different exhaust, I have the Pettit resonated mp and Pettit duel tip cat back and it sounds very deep and mellow. The Apexi N1 sounds like **** I think and thats what most people around here seem to run.
I just dont get it. I like V8's and have always ran them up untill my 7, I just dont see the reliability in them. They are fine stock but when you start REALLY modding them to get into the very low 12's and 11's throught the 1/4 they are no longer reliable. I have a friend with a z28 and he's ALWAYS having some problem with it!!!!! Its bone stock with 100K and he has always maintained it within factory specs, its eating oil like a bitch and needs rebuilding now.
As for the speed issue, that doesnt hold water either, a bone stock FD with intake, full exhaust, Power FC running base maps and 12psi runs low 12's with street tires!!!!!! Put a intake and full exhaust on a z28 and see what you get.
I'm not bashing because I like v8's fine but i dont see much advantage in swithing over to one.
I think most of the problems stem from poor maintanence by the original owners. Then when the owners did want to get it serviced the Mazda dealer didnt know what the hell they were doing. Most of the original owners maintained it like it was a piston engine and that just kills them.
Anyway, later guys
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