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kr34m

Air lock / vacuum lock diffs for drift ?

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Hey guys

 

Been reading about this a bit today, mainly for curiosity's sake.. but also because i'm wondering if anyone has done this before.

Google search shows others on other forums have thought about this idea as well, but never seen any evidence of it being done - maybe due to complexity or cost?

 

Apparently there is a model of the Nissan Navara which came factory with a air lock R200 diff.

This type of diff is more common on 4x4's but i'm wondering if anyone has considered this setup for a street / occasional track car.

 

Benefits seem to be while disengaged the diff acts normal, when activated it behaves like a welded / locked diff.

This would have none of the chatter and other side effects of a 1.5 way or 2 way.

 

The air lock ones seem to rely on a fitted air compressor, but the site below seems to have a kit which is vacuum operated, and it appears to be pretty strong.

 

http://www.mcnamaradiffs.com.au/difflock1.html

http://www.mcnamaradiffs.com.au/difflockmech.html

 

Thoughts / comments, or is the complexity not worth the risk / benefits ?

 

Cheers

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for the price of a 2 way you get the performance of a weldie.

 

snag the line and you are stuck doing single peggers, and the noise the compressors make are f**king annoying.

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There's a reason why it hasn't been done, because there is a better alternative in the form of a proper mechanical LSD.

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this has been done a few times with the gtr guys and the active lsd

 

essentially its pressure operated so by powering an actuator it hold he pressure on instead of the ecu controlling it

 

end result you can have the rear diff locked or unlocked as required aka track or shopping center

 

no the great as the diff itself is not the best compared to a proper mechanical lsd

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looked at getting an air locker for my troopy, after reading heaps of reviews about it, and all the isseus associated with it ended up going with a 1.5 diff

would strongly avoid going an air locker as stated above if u get a hole in the line, then ur back to an open diff. plus u have to carry around an air compressor with u.

 

just go a 2 way, my 180 was my daily for about 9 months and the 2-way wasn't too bad

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Thanks for the feedback guys! It's not something i was going to attempt for my 180, i was more interested for the sake of my own wild curiosity =)

 

Do you know of any sellers on here who can source Nismo GT Pro TT (38420-RSS17-C5) or Nismo Pro model (38420-RSS15-C5) diffs ?

 

Cheers

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looked at getting an air locker for my troopy, after reading heaps of reviews about it, and all the isseus associated with it ended up going with a 1.5 diff

would strongly avoid going an air locker as stated above if u get a hole in the line, then ur back to an open diff. plus u have to carry around an air compressor with u.

 

just go a 2 way, my 180 was my daily for about 9 months and the 2-way wasn't too bad

 

That air compressor will also reinflate your tyres after you've aired down off road which would probably be more benificial than a LSD + a LSD will never lock both wheels & work like a true locker when the time comes hence the name LIMITED slip diff. If the Air Locker has been installed properly with the air line routed properly you'll have years of trouble free operation. The issues from air lockers are caused by the canopy/bull bar/accessory fitters at ARB, take it to a diff specialist it's what they do day in day out.

Edited by Darcy McDoogle

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mechanical lsd skips, but is far from a locked diff, it's performance around corners is much better, although it may skip here and there, it's not too bad. An airlocked diff would be handy, however you'd lose the performance of a mechanical LSD, so though the hills etc it'd be a junk open wheeler, or a locked diff which pushes the front. whilst drifting, you'd be ok. back in the day i used to run a locked diff for track, then switch over a normal viscous in for street between each event, only because i was on a budget, however an air locked diff would be ideal in that situation if you did no grip work on the street/track where you needed a decent diff to put power down without giving you bad understeer like you get with a locker.

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or just run a locker ( shim locked diff ), have a grippy front set up and have no worries..... on the cheap :P

Edited by SILVIA s13

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mechanical lsd skips, but is far from a locked diff, it's performance around corners is much better, although it may skip here and there, it's not too bad. An airlocked diff would be handy, however you'd lose the performance of a mechanical LSD, so though the hills etc it'd be a junk open wheeler, or a locked diff which pushes the front. whilst drifting, you'd be ok. back in the day i used to run a locked diff for track, then switch over a normal viscous in for street between each event, only because i was on a budget, however an air locked diff would be ideal in that situation if you did no grip work on the street/track where you needed a decent diff to put power down without giving you bad understeer like you get with a locker.

 

Yeah thats what i thought, it could be useful but probably more as a handy gimic to switch between street use and the occasional track day.

I've set my sights on a proper Nismo 1.5 way for my CA20DET now ;)

 

jessestreeter.com for the nismo diff

 

Cheers Blingy, I've sent Jesse an email. =)

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