rear end swap ?s
10-26-03, 07:06 PM
#1
Back from the dead
Thread Starter
Join Date: Jul 2003
Location: Stockton, Ca
Posts: 236
Likes: 0
Received 0 Likes
on
0 Posts
rear end swap ?s
ok guys, i tried to find info on this from the forum and this is what i understand:
-besides the rear end, need proper brake master cylinder and e-brake lines.
ive also read that 83-85 have different axle flanges and driveshaft flange. so if i use a 79-82 gsl rear end, i can use the rear end without much mods besides brake system? and is there any welding required or is it mostly bolt on? i dont know how to weld and i want to do this on my own.
-besides the rear end, need proper brake master cylinder and e-brake lines.
ive also read that 83-85 have different axle flanges and driveshaft flange. so if i use a 79-82 gsl rear end, i can use the rear end without much mods besides brake system? and is there any welding required or is it mostly bolt on? i dont know how to weld and i want to do this on my own.
10-26-03, 07:28 PM
#2
Banned. I got OWNED!!!
Join Date: Nov 2002
Location: KING COUNTY, WA
Posts: 4,980
Likes: 0
Received 0 Likes
on
0 Posts
i swapped a gsl-se rearend into mine and i didnt swap the master cyl or proportioning valve, i took the 2 off and compared them they are identical, and have the same numbers on the same parts...
-greg
-greg
10-26-03, 07:54 PM
#3
i say what i want
Join Date: Aug 2002
Location: richmond, va
Posts: 1,866
Likes: 0
Received 0 Likes
on
0 Posts
the owner before me did the gsl rear end swap in my gs, but didnt do the master cylinder, eventually it went bad and i just got the gsl one. it is different. the side going to the rear is a little bigger, granted no, i didnt notice a difference in braking much, it physically is different.
also, you need the e-brake cable because the stock one uses drums on the rear, and the cables arent interchangable
also, you need the e-brake cable because the stock one uses drums on the rear, and the cables arent interchangable
10-26-03, 10:16 PM
#4
There should be a permanant page with info on this since it comes up so much, but since there isn't here goes.. The GSL didn't come out untill 81, so anything before that wont have it. the 81/82 rears have the smaller axles and the smaller driveshaft flange. 83 has the bigger flange but still the small axles. 84/85 have the bigger axles and bigger flange. Brake lines/fittings etc are the same for all 81-85. 79/80 require some kind of adaptor to make the brakes work. The Master cylinders are different part numbers, the proportioning valve is the same reguardless. Hope that clears things up.
10-26-03, 11:52 PM
#6
Full Member
Join Date: Jul 2003
Location: San Antonio, Texas
Posts: 198
Likes: 0
Received 0 Likes
on
0 Posts
I am also going to be doing this swap next week, so I want to get this right:
From the donor -
rear axle (dif, axle, wheel hubs)
emergency brake cables
springs (to be replaced later)
shocks (to be replaced later)
watts linkage
front dampers
front wheel hubs
Leave alone -
upper and lower control arms
drive shaft (target car is an '83)
Should I change the front crossmember? Victoria British lists it as a different part for the two models. I suppose this would allow me to fit the engine with the stock pan and mounts (I will be putting a 13B in it).
I have to put what I take out of the '83 back into the SE wreck, so it can roll (to be picked up and hauled away.
Thanks,
BTC
PS - no hijaacking intended
From the donor -
rear axle (dif, axle, wheel hubs)
emergency brake cables
springs (to be replaced later)
shocks (to be replaced later)
watts linkage
front dampers
front wheel hubs
Leave alone -
upper and lower control arms
drive shaft (target car is an '83)
Should I change the front crossmember? Victoria British lists it as a different part for the two models. I suppose this would allow me to fit the engine with the stock pan and mounts (I will be putting a 13B in it).
I have to put what I take out of the '83 back into the SE wreck, so it can roll (to be picked up and hauled away.
Thanks,
BTC
PS - no hijaacking intended
10-27-03, 07:31 AM
#7
Originally posted by 82transam
There should be a permanant page with info on this since it comes up so much, but since there isn't here goes.. The GSL didn't come out untill 81, so anything before that wont have it. the 81/82 rears have the smaller axles and the smaller driveshaft flange. 83 has the bigger flange but still the small axles. 84/85 have the bigger axles and bigger flange. Brake lines/fittings etc are the same for all 81-85. 79/80 require some kind of adaptor to make the brakes work. The Master cylinders are different part numbers, the proportioning valve is the same reguardless. Hope that clears things up.
There should be a permanant page with info on this since it comes up so much, but since there isn't here goes.. The GSL didn't come out untill 81, so anything before that wont have it. the 81/82 rears have the smaller axles and the smaller driveshaft flange. 83 has the bigger flange but still the small axles. 84/85 have the bigger axles and bigger flange. Brake lines/fittings etc are the same for all 81-85. 79/80 require some kind of adaptor to make the brakes work. The Master cylinders are different part numbers, the proportioning valve is the same reguardless. Hope that clears things up.
Trending Topics
10-28-03, 07:38 AM
#9
Adolf Hitler Verfechter
Join Date: Sep 2002
Location: Northern South Africa
Posts: 969
Likes: 0
Received 0 Likes
on
0 Posts
I dont want to hijack the thread.
Here is a related question.
What diff from a another Mazda will work..mine is starting to sound a bit funny these days ?
One that is stronger,would be preferred.
Karis
Here is a related question.
What diff from a another Mazda will work..mine is starting to sound a bit funny these days ?
One that is stronger,would be preferred.
Karis
10-28-03, 08:53 AM
#10
Back from the dead
Thread Starter
Join Date: Jul 2003
Location: Stockton, Ca
Posts: 236
Likes: 0
Received 0 Likes
on
0 Posts
http://members.ij.net/mrmazda/interc...l#DIFFERENTIAL
hope this helps... i couldnt understand half of it
hope this helps... i couldnt understand half of it
10-28-03, 08:26 PM
#11
Originally posted by oni-dori
thanks guys. so an 82 gs and gsl has the same size flanges?
thanks guys. so an 82 gs and gsl has the same size flanges?
10-28-03, 10:41 PM
#13
My wife bought me 2 RX-7s
Join Date: Aug 2001
Location: Saskatoon, Saskatchewan, Canada
Posts: 2,328
Likes: 0
Received 2 Likes
on
2 Posts
That would be a pure custom job, but I do believe that one or two of the board members have done it. I'm still waiting for someone to try the Miata IRS swap that Grassroots Motorsports proposed!
10-29-03, 03:55 PM
#15
i say what i want
Join Date: Aug 2002
Location: richmond, va
Posts: 1,866
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by MosesX605
That would be a pure custom job, but I do believe that one or two of the board members have done it. I'm still waiting for someone to try the Miata IRS swap that Grassroots Motorsports proposed!
That would be a pure custom job, but I do believe that one or two of the board members have done it. I'm still waiting for someone to try the Miata IRS swap that Grassroots Motorsports proposed!
im going to have an extra running rx7 in about 2 months, and ive been messing around with the idea of trying this swap. its just hard to locate a miata rear end. i keep telling my friend we are going to swap rears (he drives a miata) but hes not down with the solid rear axle thing
Thread
Thread Starter
Forum
Replies
Last Post
