need stock s13 sr gear ratios for shift point calculation

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s13sr20chris
Posts: 4148
Joined: Tue Jun 10, 2003 9:32 am
Car: '89 Nissan S13 w/redtop running 13psi and not leaking fuel anymore
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just as the title says. i have the ratios for the s14 sr and all the ka's but i cant find them for the s13 sr. i hear the s13 sr is different than the others. i would also like to get my hands on a typical dyno sheet for a stock boost, stock everything s13 sr for another calculation. as it is i have a good one for a s13 sr with bolt ons and a maxxed out t25.


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slow s13
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Joined: Mon Nov 11, 2002 12:56 pm
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no the srdet's are the same as the KA so you already have your numbers, only the NA sr's are different and they just have a different 5th gear.

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SR20DETPoweredS14
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Car: 1999.5 Audi A4 1.8T

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If you still want the ratios to the stock S13 SR they are Gear Ratios - Manual Transmission 1st 3.321 2nd 1.902 3rd 1.308 4th 1.000 5th 0.759Reverse 3.382 Final 4.083

s13sr20chris
Posts: 4148
Joined: Tue Jun 10, 2003 9:32 am
Car: '89 Nissan S13 w/redtop running 13psi and not leaking fuel anymore
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wow, i had them all along. where did this rumor of different gear ratios come from? ok, will be working on proper shift points.

s13sr20chris
Posts: 4148
Joined: Tue Jun 10, 2003 9:32 am
Car: '89 Nissan S13 w/redtop running 13psi and not leaking fuel anymore
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ok, i used the dyno graph from this threadhttp://www.nicoclub.com/zerothread?id=90260and the gear ratios to come up with shift points for a sr with the stock turbo maxxed out(what most folks, myself included, tend to run).first to second=7500 or as high as you can gosecond to third=6900third to fourth=6700that is for maximum acceleration in a straight line on the above setup.

Luke

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Thanks for the info.


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