Gear Codes, Mine ain't in the Video Options

[76-914]

A quick preface. This tranny came in my non-running car but has never been run as it had a broken support ear. So, I threw another tranny in which is fine. I recently bought another tail cone (side shifter) so that I could run the original tranny. Who am I kidding? I just wanted to excersize my Dr Evil Video. I think this tranny has appx 56K if it is the original. It looks damn good inside and only one sycro ring has a short "skid mark".
But Doc, I bought into your video so much that I mixed all the gears up thinkingknowing (IMG:style_emoticons/default/bootyshake.gif) it was OK. Just check the codes A-F-N-V-ZD. I wish. Here is what I'm getting T-HA-V-P-T. Help.Which gear is what? What kind of tranny do I have (Note:The 2 gears marked with "T" are slightly different diameters. One of these T gears appears to have a stamp 180' around from the "T" that reads IV. The HA gear is ground on the H but I'm pretty sure it isn't a KA or GA. Also, it appears to have an "S" stamped 180' around from the HA.)
Here is the HA
The P
The V
one of the T's
the other T

[Richard Casto]

When in doubt (i.e. you don't know how to decypher the stampings as well as Dr. Evil) you can always count the teeth and look them up in a gear set chart! I also think it's good to document what you have in what position as you take it apart (in case you had non-stock or flipped gears). Then there is no doubt when you put it back together.

[76-914]

When in doubt (i.e. you don't know how to decypher the stampings as well as Dr. Evil) you can always count the teeth and look them up in a gear set chart! I also think it's good to document what you have in what position as you take it apart (in case you had non-stock or flipped gears). Then there is no doubt when you put it back together.

Do you have a link to this gear set chart? I read the post yesterday that had all of the different gear combinations that RacerChris and others use on the AX circuit but was unable to locate the gear chart. (IMG:style_emoticons/default/chair.gif) Everytime that I try to avoid looking stupid the truth seeps out. (IMG:style_emoticons/default/headbang.gif)

[Richard Casto]

Do you have a link to this gear set chart? I read the post yesterday that had all of the different gear combinations that RacerChris and others use on the AX circuit but was unable to locate the gear chart. (IMG:style_emoticons/default/chair.gif) Everytime that I try to avoid looking stupid the truth seeps out. (IMG:style_emoticons/default/headbang.gif)

I am partial to the version on the 914 Wiki as I have put it together...

http://www.roadglue.com/wiki/index.php?tit...14_transmission

It has good and easy to understand basic info. There is a chart (that exists as .xls files) here on 914world.com that goes into info about re-gearing. It has a lot of info, but I think it can be difficult for the newbie...

http://www.914world.com/specs/regearing_901.php

i wish porsche would ditch the stupid letter codes and replace it with a more meaningful system , like number of teeth. all this lettering is crazy.

Actually if you understand the letter codes it makes sense. A to Z, low to high. I makes it easy to converse with people to use the standard Porsche 901 letters vs. numeric ratios. And with a gear set chart, you can convert the letters to teeth count/ratios as needed.