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yld15x
 Post subject: diff ratios
PostPosted: Sat Oct 24, 2009 6:52 pm 
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T25

Joined: Sun Sep 20, 2009 4:14 pm
Posts: 5
Location: sydney
Car: 180sx
does anyone know what ratios are in the diff of a 180sx if so has anyone changed them and was it worth it

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_Wing_
 Post subject:
PostPosted: Sun Oct 25, 2009 2:42 pm 
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T04 Hybrid

Joined: Fri Mar 18, 2005 12:32 pm
Posts: 271
Car: s15
not sure what's in a 180 but an upgrade in the diff ratio is one of the best mods EVER!

i've got an s15 and they come with the 6 speed + 3.7 and when i went to a 5 speed box the performance... well... there was no 'performance' anymore because the car felt like a complete slug. up'd the diff ratio and it's back to decent now but the next problem is the gear ratios are spaced so far apart... oh well that's the price you pay for gearbox strength.

ADM s14s come with the 5 speed + 3.7 and I guess they must feel like a slug all the time. Now I understand why the journalists raved on about the new 6 speed gearbox and diff when the s15 came out.
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OEM Front Lip
 Post subject:
PostPosted: Sun Oct 25, 2009 9:36 pm 
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T25

Joined: Thu Oct 08, 2009 11:08 pm
Posts: 3
Car: 98 Civic
SR20DET 5speed S13's have 4.11:1, autos are 3.9:1

It only equates to a few hundred RPM difference along the freeway.
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cypher1024
 Post subject:
PostPosted: Sun Oct 25, 2009 11:04 pm 
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Joined: Sun Aug 03, 2003 3:48 pm
Posts: 3683
If you were lucky enough to get a CA18DET 180SX, you probably have a 4.39:1 diff.
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INSPIRATION
 Post subject:
PostPosted: Sun Oct 25, 2009 11:07 pm 
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T28 Hybrid
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Joined: Sun Dec 10, 2006 8:24 pm
Posts: 82
Car: 180sx
i had 4.11:1 standard in my 95 180 but put 4.4:1 out of some skyline... dont know exactly what type, i just sawaped the back caseing... but im waiting to get the car back on the road! so i dont know the peformance gains yet
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yld15x
 Post subject:
PostPosted: Mon Oct 26, 2009 5:49 pm 
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T25

Joined: Sun Sep 20, 2009 4:14 pm
Posts: 5
Location: sydney
Car: 180sx
thanks for the info now i know i can leave the gears and concentrate on just doing the main bearings or just buy a second hand centre

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nick0
 Post subject:
PostPosted: Tue Jul 06, 2010 10:18 am 
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Classifieds Scab

Joined: Sun Nov 30, 2008 1:41 pm
Posts: 67
Car: 180
I had 4.3:1 in my 180 most180s came with this one
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