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 Diff Gears
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VN91SX
Fully Licenced


simp098

344 Posts

Male

Posted - 27 Dec 2009 :  12:24:30 PM  Show Profile Send VN91SX a Private Message
 
Hi guys and girls,

Hope everyone had a safe and happy Christmas! I have a few questions regarding diff gears. Has anyone on here gone bigger diff gears, and if so what size and how did they go compared to the factory size?

Look forward to some feedback
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VNSVLE
Forum Moderator


smiley-blunder

1316 Posts

Male

Posted - 28 Dec 2009 :  08:53:13 AM  Show Profile Send VNSVLE a Private Message
 
Have not done myself but the general consensus seems to be either 3.7's or 3.9's for highway or 4.11's if you are going to drag race.
 

What's the difference between understeer and oversteer?
Understeer is when the driver is scared.
Oversteer is when the passenger is scared.
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VN91SX
Fully Licenced


simp098

344 Posts

Male

Posted - 28 Dec 2009 :  11:29:47 AM  Show Profile Send VN91SX a Private Message
 
I thought that was the case VNSVLE. I would go either 3.7's or 3.9's. Probably favour the 3.7's. How hard a job would it be to change them over?
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VNSVLE
Forum Moderator


smiley-blunder

1316 Posts

Male

Posted - 28 Dec 2009 :  5:48:21 PM  Show Profile Send VNSVLE a Private Message
 
Really depends what gear you have and how mechanically minded you are. Also depends if you are getting just the crown wheel and pinion or an already set complete centre.
 

What's the difference between understeer and oversteer?
Understeer is when the driver is scared.
Oversteer is when the passenger is scared.
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VN91SX
Fully Licenced


simp098

344 Posts

Male

Posted - 28 Dec 2009 :  6:47:11 PM  Show Profile Send VN91SX a Private Message
 
I would do just the crown wheel and pinion
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VN05L
Learner



8 Posts

Male

Posted - 05 Jan 2010 :  12:17:55 AM  Show Profile Send VN05L a Private Message
 
I went 3.45 tried to do it myself... didnt get the back lash right.
Went to a diff shop and got it fully rebuilt while I was there.
3.45 compared to 3.08 is 12% difference in the speedo
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sacked vn
Starting in the driveway


monsters-radioactivemummy

1 Posts

Male

Posted - 14 Jan 2010 :  9:42:05 PM  Show Profile  Click to see sacked vn's MSN Messenger address Send sacked vn a Private Message
 
yeh im considering changing my diff gears wen i get my diff rebuilt, i was just wondering if anyone new a rough price to get diff rebuilt with 3.7 gears, cheers guys


-sean
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VN91SX
Fully Licenced


simp098

344 Posts

Male

Posted - 15 Jan 2010 :  12:19:08 PM  Show Profile Send VN91SX a Private Message
 
You would be looking at around the $1000 mark for a rebuild with brand new diff gears
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nodg
National Driver



1667 Posts

Male

Posted - 03 May 2010 :  5:35:55 PM  Show Profile  Click to see nodg's MSN Messenger address Send nodg a Private Message
 
The guys that have done it before say 3.9 is good for a relitevely stock auto and 3.45 for the 5 speed manual. Depends what power your making though going too high a ratio with excess power going to the wheel is a bit of a waste...
 

Cheers,
Nodg.
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