performance differential
08-14-01, 02:52 PM
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performance differential
I am thinking about upgrading my GTU's rear end for better acceleration and loose some high end. Any suggestions for the swap?
08-14-01, 03:45 PM
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you are right
GTU does have the TII end. I am thinking about putting something even with lower gears. I do not drive the car for road trips so I dont care about the high end. I would like to get more quickness where it counts.
08-14-01, 05:30 PM
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You're looking at big bucks. The 4.30 gear in the GTUs is the lowest bolt-in gear you're gonna find. You can adapt a 4.88 or 5.13 set. These sets are from the RX2 and 3. The difference is that the snout on the pinion gear is much shorter and needs to be cut in half and put back together with an extension. It's very precise work and thus expensive. A 5.13 set will run you close to $1000 just for the finished gear set. The 4.88s will be about $150-200 cheaper.
Chris
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08-15-01, 08:18 AM
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thanks
thanks for the great info. Forget that idea, save money for a FD I guess. Do you have any experience with dying and painting interiors?
thanks
thanks
08-15-01, 01:34 PM
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I went the other direction for fuel economy. I have become a little disgruntled with my NA and its performance potential. I went to the 3.90 and dumped the 4.10. My 1/4 mile went from a 15.0 to a 15.9 but I gained 6-8mpg. I would guess going the other direction to the 4.30's would produce a good incress in performance. maybe not as much as I lost but noticable. You also will seriously notice it at the pump. 
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08-15-01, 08:42 PM
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Re: you are right
Originally posted by SiyahGTU
GTU does have the TII end. I am thinking about putting something even with lower gears. I do not drive the car for road trips so I dont care about the high end. I would like to get more quickness where it counts.
GTU does have the TII end. I am thinking about putting something even with lower gears. I do not drive the car for road trips so I dont care about the high end. I would like to get more quickness where it counts.
It is a regular NA differential. The GTUs has a viscous type differential, still NOT the same as the TII. 4.3 gears are available for the NA diff, they are the same as the GTUs gears. 4.3 gears are ALSO available for the TII, the are the same as the Infini- note that the part numbers are NOT the same.
Look on the Mazdatrix website for more info.
www.mazdatrix.com
Brad
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