31 Fellers A Few Questions If You Could Please Help

[paulmac]

gday just wanting to know what rear brake upgrades can i do? will s13 calipers bolt up and is the s13 brakes twin pot or single pot at the rear? if they are single pot is there like a valve or something i can get for the brake lines if i have twin pots at the front?? and when doing a manual conversion is there anyway i can use a manual gearbox mount and cross member and that bolt straight up???

cheers paul

Edited February 7, 2008 by paulmac

[rsx84]

when looking at 2pot rear calipars you need to think of 2 things, Aus r31 uses a cable hand brake and the calipar spacing bracket ie: can i mounts the calipars on the 31 bracket...

if you remove the rear drive shafts on an aus 31 the calipar mounting bracket comes off too so you could get a new one made to fit both the diff houseing and the new calipars...

what calipars to use i don't know, if you look at later mode NA skylines they use a very similar looking rear calipar, may be look into these to see if any model offer a larger or even 2 pot calipar. most turbo models use the 2 pot without the same hand brake set up.

when doing a manual conversion you need the tail shaft and gear box x-member from a manual, mounting for the x-member is different too, need to drill 2 x holes through the floor and add 2 x bolts so you can use all 4 x holes on the x-member.

[paulmac]

ok cheers dude thanks heaps for that info was alot of help

[racsov500]

are you talking aus r31 or imported.. imports are easy as they have a drum handbrake

aus however have an intergrated handbrake and normal brake caliper, which no brakes you would want to use have this setup. if its not a street car (you dont need a cable handbrake) then VS commodore calipers fit, or make up some of your own brackets to fit pretty much anything (such as r32 gtr rears)

[paulmac]

are you talking aus r31 or imported.. imports are easy as they have a drum handbrake

aus however have an intergrated handbrake and normal brake caliper, which no brakes you would want to use have this setup. if its not a street car (you dont need a cable handbrake) then VS commodore calipers fit, or make up some of your own brackets to fit pretty much anything (such as r32 gtr rears)

yeah its an aust delivered 31 so there arent any type of brakes that would be a good upgrade? is there some sort of valve or something i can use when i do the front brake upgrade which will prob be 32 brakes just so that the backs dont lock up

[rsx84]

yeah its an aust delivered 31 so there arent any type of brakes that would be a good upgrade? is there some sort of valve or something i can use when i do the front brake upgrade which will prob be 32 brakes just so that the backs dont lock up

with the aus r31 front struts you can't run the larger nissan callipers because they use a 100mm mounting spacing and the r31 has 90mm spacing, you'd have to get some import/ gts front struts with separate hub/rotor set up. even just the import/gts set up is a great improvement over the standard r31 front brake set up.

a mate of mine runs an rb30et set up with over 200+rwkw potential in his aus r31 and with the import front brake set up the engineer said "no problems turn the boost up".....

[paulmac]

with the aus r31 front struts you can't run the larger nissan callipers because they use a 100mm mounting spacing and the r31 has 90mm spacing, you'd have to get some import/ gts front struts with separate hub/rotor set up. even just the import/gts set up is a great improvement over the standard r31 front brake set up.

a mate of mine runs an rb30et set up with over 200+rwkw potential in his aus r31 and with the import front brake set up the engineer said "no problems turn the boost up".....

yeah i know i will be doing the s13 coilover conversion but i didnt really wanna change the control arm, hubs and tie rods ends then get to rear and not be able to convert the back brakes to a better kind that wont lock up with 2 pots on the front if there is some sort of valve or something i can use to equalize pressure more i'd use that and some good pads and drill and slot the 31 rotors but i don't wanna do that if there is an option of changing the rear brakes to 2 pot calipers so im just sussing all my options before i get into it

cheers anyway mate

[rsx84]

did this is my GTS2 about 2 months ago..

you can use the r31 LCA but not the hubs, tie rod ends are an iffy thing, a few people on the r31 forum have kept them but you have to wind them all the way out leaving like 4-5 threads, not 100% safe.

i used the s-13 tie rod ends with these extender arm/adaptors..

[paulmac]

yeah my plan was to use the s13 tie rod ends and s13 hubs and what not, just my main concern was when i put 32 brakes on the front what the deal is gonna be with my back's and i just figured the backs being single pot and 32 front brakes being twin pot i'd suspect when i brake that the rears will lock up before the front start to actually work at higher speeds

[rsx84]

i'm running the r32 4-pots on the front and r31 rears and have noticed no difference in braking other than the stopping power i now have.....

i've never heard of the rear r31 brakes locking when running 4 pots are on the front from anyone on the r31 forum, and quite a few of the QLD members do a bit of track work.

doing the fronts is a great upgrade for the r31... enjoy...

i'd be more thinking about what pads and fluid to use..

[R31 drift pig]

You can use R31 LCA's with S13 coilovers, and you dont have to touch the tie rods at all. Using S13 LCA's you get SFA threads on, as said before. Thought I might have an issue with the balljoint but not so.

I know this as Ive just done it.

Most people use S13 LCA's to gain track, I did that with my wheels instead (18 x 9 -10, and yes they fit)

You CANNOT use S13 tie rod ends as they have a different pitch on the thread.

I used the following...

S13 Silk Road Section RMA-8 10kg/8kgcoilovers

S13 Hub/Knuckle/Stub axle

R31 LCA

R31 rack/tie rods/tie rod ends

R32 GTS-T pot callipers

R33 GTS non turbo 4 stud rotors

R31 brake lines

S13 caliper banjo bolts.

Whiteline sway bar and super pro link bushes

3rds Productions Rose Jointed Adj. Castor Arms

and it all bolted straight together. No modding needed whatsoever.

Was absolutley stoked with the outcome, hope this helps.

Im also using VS commodore calipers on the rear (Hydraulic handbrake), and havent had any bias problems at all. Havent heard of people with Stock 31 calipers having issues either. Nothing to worry about there.

If it's a real concern for you though (And I see it as completely unnecessary) you can add a brake bias controller. Not needed though.

Hope all this helps you somewhat.

Edited February 15, 2008 by R31 drift pig

[rsx84]

You can use R31 LCA's with S13 coilovers, and you dont have to touch the tie rods at all. Using S13 LCA's you get SFA threads on, as said before. Thought I might have an issue with the balljoint but not so.

the s-13 LCA are 10mm longer than the r31 LCA, i knew there was something missing in my discription that caused the tie rod issue, using the s-13 LCA also adds chamber which is good but just a little over the top

any excuse to put up a pic hehehehe

i'm most likely going to go back to the r31 LCA and if i want chamber i'll use the adj strut tops. plus i can lower the car abit if the rims are sitting in by the 10mm at the front.

[R31 drift pig]

yeah, S13 LCA adds 1.5 degrees fixed camber.

Wasnt needed in my case as coilovers have adj. camber tops and elongated kingpins.

For shits and giggles we set my car at like 8 deg camber. now back down to a sensible 2.5 or so (Woot for drifter eye alignments LOL)

Another thing is that S13 LCA's are expensive (Well, compared to 31 arms which are cheap as chips), and are more sort after.

BTW, LOVE those CR KAI's.... How did you do the rear 5 stud? EA falcon axles?

Considered doing that and Attain 5 stud S13 hubs, but got custom made 4 stud wheels instead. Worked out a lot cheaper and got the offsets and widths I wanted without spacers.

Am considering Work XD9's in white though, as Work now make a 18 x 10 +18 in 4 stud! (Need to run a $15mm bolt on though to have the same offsets I have now though)

[paulmac]

yeah cheers fellers that was heaps of help muchly appreciated i just had a suspision but i guess results show the info your help was very muchly appreciated cheers