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Technical => Drivetrain Tech => Topic started by: Soul on November 01, 2011, 03:48:06 PM

Title: Speedo gear
Post by: Soul on November 01, 2011, 03:48:06 PM
OK tired of my speedo being 8mph fast, I have I believe a 19tooth in my c4 trans with 3.73 gears. Any one know what the correct is?
Title: Speedo gear
Post by: thewestie on November 01, 2011, 06:46:06 PM
I'm running a Black 21 tooth with a 225/ 60/ 16  W/ 3.73  It runs close enough for me +/- mph there's a chart motorsports putout. Or give me your tire size and tranny I can make a call and get back to you
Title: Speedo gear
Post by: mcb82gt on November 01, 2011, 08:20:01 PM
Im not sure, but mine isnt reading right with my new gear.  I may be able to sell it to you cheap if it is what you need.
Title: Speedo gear
Post by: Soul on November 02, 2011, 08:31:21 AM
Thanks thewestie, I know the chart your talking about in the back of the orange motorsport book. Used to have one but threw it out and got a new book thinking it would be in there, but of course it wasn't.
Title: Speedo gear
Post by: Soul on November 03, 2011, 09:00:22 AM
Btw I haven't got a chance to look at my car (we have a long distance relationship) but its stock tire size.
Title: Speedo gear
Post by: TOM Renzo on November 04, 2011, 04:55:28 AM
Rule o
Title: Speedo gear
Post by: softtouch on November 04, 2011, 02:40:45 PM
Quote from: TOM Renzo;371931
Rule of thumb

A method of determining the north pole of an electromagnet.
I think I learned that in a H.S physics class. It's interesting how that became such a wide spread saying.
Title: Speedo gear
Post by: TOM Renzo on November 04, 2011, 04:11:41 PM
Yes i
Title: Speedo gear
Post by: softtouch on November 04, 2011, 05:32:17 PM
Yeah, I think you wrapped your right hand around the coil so your fingers pointed in the direction of current flow. Then your thumb pointed to the north pole.
Title: Speedo gear
Post by: V8Demon on November 08, 2011, 02:03:09 PM
Don't forget that tire diameter has a role in how the speedo reads as well....
Title: Speedo gear
Post by: mercury-man on November 08, 2011, 02:13:55 PM
Quote from: V8Demon;372333
Don't forget that tire diameter has a role in how the speedo reads as well....
Paul your pm box is full...:poke:
Title: Speedo gear
Post by: V8Demon on November 08, 2011, 02:27:50 PM
Quote from: mercury-man;372334
Paul your pm box is full...:poke:

fixed....