20B in a 85 GSL?
08-08-03, 04:18 PM
#26
Full Member
Thread Starter
Join Date: Apr 2003
Location: Fairbanks, Alaska
Posts: 241
Likes: 0
Received 0 Likes
on
0 Posts
You're going to have to completely redo your cooling system, upgrade the oil-cooling, you can't run the Cosmo ECU without major headaches so you need an aftermarket computer capable of running a 20B, new fuel system which means fuel pumps, surge tank, regulator and bigger lines, exhaust system, new clutch, gearbox, tailshaft and diff to handle the power and then all the little bit and pieces you'll need to get it running.
My statement stands.
Perhaps for you it would be that expensive, but having a near life-long friend who lives in Japan and has extraordinary access to new/used rotary related items, the costs are minimal. Not to mention the exchange rates...
Anything else?
08-08-03, 05:02 PM
#27
Senior Member
Join Date: Apr 2003
Location: SC
Posts: 479
Likes: 0
Received 0 Likes
on
0 Posts
Even at cost for most of those parts you're going to be spending a lot of money. Stuff adds up. I've done two swaps in two different cars, and I've fabricated nearly all the stuff myself, in my own shop. I speak from experience, you're looking at some serious cash. But hey, prove us all wrong and post your reciepts when you're done.
Why don't you just but a V8 in the car? It's cheaper, easier, and will make more power in the long run. You'll probably spend 1/2 what the 20B would cost, or you could spend the same and have a 600+hp motor. You're already distroying the weight balance and all the other BS arguments people use to bash V8 swaps, but no one seems to bring up when someone mentions a 20B....Hmm, interesting....
Why don't you just but a V8 in the car? It's cheaper, easier, and will make more power in the long run. You'll probably spend 1/2 what the 20B would cost, or you could spend the same and have a 600+hp motor. You're already distroying the weight balance and all the other BS arguments people use to bash V8 swaps, but no one seems to bring up when someone mentions a 20B....Hmm, interesting....
08-08-03, 11:36 PM
#30
FD > FB > FC
Originally posted by O 16581 72452 5
If it's a custom 3-rotor utilizing 13b rotors and housings, it's a 20b.
If it's a custom 3-rotor utilizing 13b rotors and housings, it's a 20b.
08-08-03, 11:59 PM
#31
Hunting Skylines
Join Date: Apr 2001
Location: Brisbane, Queensland, Australia.
Posts: 3,431
Likes: 0
Received 4 Likes
on
3 Posts
Originally posted by hornbm
Not so, the hit man if I remember right did his motor with 2 intermediate housings, where as a true 20b has a housing 1 inermediate housing and a much thicker housing sperating the front rotor from the middle one.
Not so, the hit man if I remember right did his motor with 2 intermediate housings, where as a true 20b has a housing 1 inermediate housing and a much thicker housing sperating the front rotor from the middle one.
08-09-03, 12:01 AM
#32
---------------------
Join Date: Nov 2001
Location: Kamloops BC Canada
Posts: 2,029
Likes: 0
Received 0 Likes
on
0 Posts
parts aren't cheap.... how much was an MSD box again? Yeah... might want to re-think your strategies 
Perhaps a V8 swap is the way to go?
Perhaps a V8 swap is the way to go?
Last edited by Keaponlaffen; 08-09-03 at 12:04 AM.
08-09-03, 02:14 AM
#34
Full Member
Thread Starter
Join Date: Apr 2003
Location: Fairbanks, Alaska
Posts: 241
Likes: 0
Received 0 Likes
on
0 Posts
Totally agree with ya there, bud...
hehe
I'm not against it by any means... just not my thing.
hehe
I'm not against it by any means... just not my thing.
Last edited by Zeta-Gouki; 08-09-03 at 02:16 AM.
08-09-03, 09:48 AM
#35
mazdaspeed 3 coming soon
Join Date: Jul 2001
Location: Mississauga, Ontario
Posts: 1,761
Likes: 0
Received 0 Likes
on
0 Posts
I for one would love to know how a V8 would make more power then a tuned 20B in "the long run" . Any RX-7 with a V8 is now a PIECE OF ****.
Originally posted by '85 GSL 302
Even at cost for most of those parts you're going to be spending a lot of money. Stuff adds up. I've done two swaps in two different cars, and I've fabricated nearly all the stuff myself, in my own shop. I speak from experience, you're looking at some serious cash. But hey, prove us all wrong and post your reciepts when you're done.
Why don't you just but a V8 in the car? It's cheaper, easier, and will make more power in the long run. You'll probably spend 1/2 what the 20B would cost, or you could spend the same and have a 600+hp motor. You're already distroying the weight balance and all the other BS arguments people use to bash V8 swaps, but no one seems to bring up when someone mentions a 20B....Hmm, interesting....
Even at cost for most of those parts you're going to be spending a lot of money. Stuff adds up. I've done two swaps in two different cars, and I've fabricated nearly all the stuff myself, in my own shop. I speak from experience, you're looking at some serious cash. But hey, prove us all wrong and post your reciepts when you're done.
Why don't you just but a V8 in the car? It's cheaper, easier, and will make more power in the long run. You'll probably spend 1/2 what the 20B would cost, or you could spend the same and have a 600+hp motor. You're already distroying the weight balance and all the other BS arguments people use to bash V8 swaps, but no one seems to bring up when someone mentions a 20B....Hmm, interesting....
08-09-03, 12:12 PM
#36
Mazspeed.com
Join Date: Oct 2002
Location: Maryland
Posts: 1,172
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by '85 GSL 302
Why don't you just but a V8 in the car? It's cheaper, easier, and will make more power in the long run. You'll probably spend 1/2 what the 20B would cost, or you could spend the same and have a 600+hp motor. You're already distroying the weight balance and all the other BS arguments people use to bash V8 swaps, but no one seems to bring up when someone mentions a 20B....Hmm, interesting....
Why don't you just but a V8 in the car? It's cheaper, easier, and will make more power in the long run. You'll probably spend 1/2 what the 20B would cost, or you could spend the same and have a 600+hp motor. You're already distroying the weight balance and all the other BS arguments people use to bash V8 swaps, but no one seems to bring up when someone mentions a 20B....Hmm, interesting....
Therefore, nobody complains because it's not accurate. You V8 people are just tightwads. If you want your ROTARY car to go really fast - get the biggest ROTARY you can find
Besides, to get a V8 to compete with the potential of the 20B HP-wise, you'll spend more... in the long run
08-09-03, 04:28 PM
#38
Unconfirmed
Join Date: Oct 2002
Location: florida
Posts: 632
Likes: 0
Received 0 Likes
on
0 Posts
I have seen a couple of 1st gens with 20bs in them. not much more work than putting a 13b rew in one. both of the ones I saw just moved the rad foward to where the rad housing used to be not back. I would guess about 2000 more than the rew swap not counting engine cost. much more potential than a v8 swap.
08-09-03, 05:45 PM
#39
Mazspeed.com
Join Date: Oct 2002
Location: Maryland
Posts: 1,172
Likes: 0
Received 0 Likes
on
0 Posts
The reason for moving it back (and relocating the tranny/fabbing a new driveshaft) is to A) Keep the weight distrobution where it should be and B) get the componentry ready for higher HP.
Sure, you could just move it forward, but seeing how a 1st gen in stock trim is front-left heavy already, I'm quite certain you wouldn't want to do that if you enjoy the handling you have.
Sure, you could just move it forward, but seeing how a 1st gen in stock trim is front-left heavy already, I'm quite certain you wouldn't want to do that if you enjoy the handling you have.
08-09-03, 06:05 PM
#40
Administrator
iTrader: (8)
Join Date: Nov 1998
Location: So. Arlington, TX!!!
Posts: 12,974
Likes: 0
Received 61 Likes
on
38 Posts
If you're gonna spend that kind of cash and do that kind of fabrication, you'll be better off putting in a Falconer V-16 so you can get something north of 800 BHP naturally aspirated...aluminum block,aluminum heads, coil-on-plug, dry sump...Set back, it shouldn't screw up the balance too bad....
08-09-03, 06:13 PM
#41
Unconfirmed
Join Date: Oct 2002
Location: florida
Posts: 632
Likes: 0
Received 0 Likes
on
0 Posts
front left heavy? mine was 50/50 with the exclusion of me & the battery. to move it back It would be a lot more work than just moving the trany and drive shaft. you would have to fab a new fire wall and trany tunel. plus everthing that was efected by that. I think the question was about if it coud be done, aid on how to,and could it be done for engine plus 4000 grand. I think it should be able to be done for that but not the best way. functionaly it would not be much differant on balance than a v8 swap, weight is much closer. use light weight compnets up front and for the hp/torque you could use weights to bal the ratio. the best way would be to build a tube frame but thats some jack.
08-09-03, 06:17 PM
#42
Administrator
iTrader: (8)
Join Date: Nov 1998
Location: So. Arlington, TX!!!
Posts: 12,974
Likes: 0
Received 61 Likes
on
38 Posts
Ahhh, but effendi and friends have incredible fabrication skills, so a tube frame wouldn't be a problem at all and cost only $120 for the chrome-moly tubing necessary to build it...
08-09-03, 07:44 PM
#43
Mazspeed.com
Join Date: Oct 2002
Location: Maryland
Posts: 1,172
Likes: 0
Received 0 Likes
on
0 Posts
if you're saying a stock 1st gen is perfect 50/50 balanced, then I want what you're smoking
and mar - shush you. No need to muddy the waters
As for the fabbing - it's essentially just the tunnel and tranny mount with the driveshaft (firewall needent be touched). Since you'd undoubtably be upgrading from the 1st gen tranny with any 20 b swap (along with the rear end), a lot of this noise is quite moot.
It's not if it can be done - that's been answered by the swaps out there. It's whether it's worth it to do it cheap and half-*** via solely moving everything forward...
and mar - shush you. No need to muddy the waters
As for the fabbing - it's essentially just the tunnel and tranny mount with the driveshaft (firewall needent be touched). Since you'd undoubtably be upgrading from the 1st gen tranny with any 20 b swap (along with the rear end), a lot of this noise is quite moot.
It's not if it can be done - that's been answered by the swaps out there. It's whether it's worth it to do it cheap and half-*** via solely moving everything forward...
08-10-03, 04:07 PM
#46
Mazspeed.com
Join Date: Oct 2002
Location: Maryland
Posts: 1,172
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by kuhlrx7
pratch nothing is ever perfect. and how would you move a 20b back 6~ inchs with out touching the firewall?? by the way you know mines not stock
pratch nothing is ever perfect. and how would you move a 20b back 6~ inchs with out touching the firewall?? by the way you know mines not stock
Yes, I knew you were either mistaken, or not stock since in stock trim the FB is quite front-left heavy
Again - the original poster asked if it's possible, the answer is yes. The longer answer is to do it right, you're going to be laying out some serious bread ($15K isn't far off the mark). To do it cheap, you'll still lay out bread (ever priced a j-spec 20B?).
Still, if this month is as lucrative as it should be design-wise, my problematic engine is going bye-bye and I'll be buying a rebuilt-with-warranty SP 12A. I'll feel like a little boy at Christmas, I'm sure
To the original poster - best of luck should you choose to do this - you'll have yourself a car with serious *****, and lots of room to grow!
08-11-03, 09:35 PM
#47
Administrator
iTrader: (8)
Join Date: Nov 1998
Location: So. Arlington, TX!!!
Posts: 12,974
Likes: 0
Received 61 Likes
on
38 Posts
Originally posted by pratch
and mar - shush you. No need to muddy the waters
As for the fabbing - it's essentially just the tunnel and tranny mount with the driveshaft (firewall needent be touched). Since you'd undoubtably be upgrading from the 1st gen tranny with any 20 b swap (along with the rear end), a lot of this noise is quite moot.
and mar - shush you. No need to muddy the waters
As for the fabbing - it's essentially just the tunnel and tranny mount with the driveshaft (firewall needent be touched). Since you'd undoubtably be upgrading from the 1st gen tranny with any 20 b swap (along with the rear end), a lot of this noise is quite moot.
...if he's going to fab, do something really out of the box....V-16...smooth as silk...gawdawful hammer when angered...
Thread
Thread Starter
Forum
Replies
Last Post
