Jump to content
SAU Community

Recommended Posts

sorry for the noob question but can someone please explain exactly how an r31 with a welded diff will drive... all i ever hears is "it'll be a pig".

the car is for track use (drift...duh) only but i'll drive it to and from as CBF with trailer :D

if not weld the diff what other options do i have for my CHEAP build (only 175-200 rwkw's)

Link to comment
https://www.sau.com.au/forums/topic/241227-welded-diff/
Share on other sites

Yeah it will just chirp all the time when you are trying to turn as both wheels will be turning at the same speed...normally your outer wheel will turn fast than your inside wheel when turning...Personally it'd be a big risk driving your vehicle to an event as it will be really obvious to the police if they see you trying to turn at an intersection and it will be chirping and skipping around the corner. You will get your ass kicked by the police. Get a proper car trailer or by a mechanical diff (around $1500) or run the risk of getting caught.

Link to comment
https://www.sau.com.au/forums/topic/241227-welded-diff/#findComment-4213325
Share on other sites

seeing as it will have 17 x 9.5 +18's sticking waaaay out the side too... might be a lil obvious....

the plan was to just drive it to/from till i got busted and then just pay he $ 187 never bother registering it again ;)

Link to comment
https://www.sau.com.au/forums/topic/241227-welded-diff/#findComment-4213343
Share on other sites

just do it, i drive my VL with a spool daily, you get used to it real quick, only thing i would sugest is putting some stockers on back/all round coz it'll chew out ur tyres real quick even if you drive it soft. of course thats just for street driving, if it will genuinely only be to the track and back then yeah, just leave ur rims on then

edit: forgot the other part of the answer, your other options are a rebuilt VL turbo LSD/r31 lsd, or any BW78 series diff(i think its the BW78) but VLT is probly the more common one. allow a couple of hundred for geting the centre, and another 4-500 rebuilding it. if you do get a tighter spring in the centre, like 200-300pound, but then it will probly start ating like a locker anyway. keep in mind these diffs are notorius for wearing ot quickly when doing burnouts etc, i htink the 300pound spring will fix that somewhat, but is it really all worth it for a cheap drift hack?

Edited by VB-
Link to comment
https://www.sau.com.au/forums/topic/241227-welded-diff/#findComment-4213741
Share on other sites

yea they just chirp n bounce a little. my mate put shims in his. no difference to welding it so you might as well weld it. he has had his for over a year and never had a problem with cops. his was a daily and never complained about it. good fun too :D

Link to comment
https://www.sau.com.au/forums/topic/241227-welded-diff/#findComment-4214104
Share on other sites

yeah do it, i had 1 in my r32 for 1 and a half years, the only reason i change it is because it start making a annoying noise, but yeah was heaps of fun, people love the chirps in maccas carparks lol, just take a wider turn if cops are around, i never had a problem with them,

they hardly ever tell you to do a u-turn to check for welded diffs,

and because its a r31, there will be even less police pulling you over, just do it, will be sweet,

o tips on welding, i just got some fat sticks for a stick welder, degrease the whole diff, and use a whole stick in each of the 4 holes, just make it look like a lavar flow in the holes, that way you know there will be heaps of weld and it wont break,

JV

Link to comment
https://www.sau.com.au/forums/topic/241227-welded-diff/#findComment-4215827
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Oof, I will forevermore have those shredded gears in mind whenever someone talks about showing mechanical sympathy towards their car. Thanks for the photos, fascinating stuff!
    • Curious to see how the SpeedTek stuff holds up
    • The holdups last year were drivetrain related. I had the car out right after getting the bearing issue resolved. Third launch and the car didn't move after releasing the clutch. It had sheared all the engagement teeth off the 1st gear.    Thankfully no other damage was done. I set an aftermarket gear beside an OEM gear and found that the engagement teeth on the OEM gear were much larger and better supported. Looking through my bin of spare transmission gears I found that there are two types of tooth on the OEM first gears - the larger tooth and the smaller tooth. It looks like most aftermarket gearset manufacturers base their design on the smaller tooth. OEM large tooth left - Speedtek, OS Giken, etc or OEM small tooth right Decided to give that larger engagement tooth a try. Pressed the ring off an OEM gear and sent it to a transmission manufacturer here in the States. They did their "faceplating" operation with my synchro ring on the Speedtek gear.   I reassembled it, took it back to the track and promptly destroyed the gear itself.  I'll rebuild this and use it as a spare - thankfully just first gear and the countershaft are damaged beyond repair. Definitely disheartening but my welded on engagement tooth ring held up!  Moved to Speedtek's dog engagement design as the gears appear to be much stronger. So far they have taken much more abuse at the track. Also scored a Stillway lockout from the Netherands for super cheap. It's for some other RB transmission so it took a bit of fabrication to fit but honestly a very easy job. I also had to heavily modify the gates as they were very different.   Then for some reason at the last test and tune a silicon coupler below the throttle blew off and took out the radiator and fan. Thankfully it was in the burnout box and not down track. This car is really beating me up - I still haven't made a pass in it. Ran it through the gears many times on the street but it keeps biting me at the track.  Currently in the process of replacing the radiator and remaking the throttle pipe to remove the coupler and use a cast 90 and a vband. I WILL get this thing down the track...
    • Covers most of the above points really. There's a few exceptions but most just see driving as an irritating but necessary task they must complete if they want to get anywhere on time. Also see it as a good time to show their awesome multi-tasking abilities on their mobile and/or doing their makeup.  
    • I don't believe I posted pictures of the second oil pump pickup I added so here they are. Data shows it gets oil pressure up to the relief pressure much earlier in the RPM. Is that important? Not likely... This was just another attempt to fix the bearing issues.   I also heavily opened up the inlet to the pump since it now had to flow oil from two pickups. I believe the diameter increased about 1/8".
×
×
  • Create New...