found out my speedo is off 10mph
6th Gear Member
Joined: Sep 2005
Posts: 15,042
From: Hamilton, NJ
RE: found out my speedo is off 10mph
I forget exactally how it goes. Jack it up in the rear so the tires are off the ground. Make a mark on the driveshaft (with a piece of chalk or something... even marker). I forget which way it is but for everytime your tires do a full rotation your driveshaft will spin 3.08 times, or 3.55 times, 3.73 times... depending on gear size thats the amount that your driveshaft will spin. This should work if you have stock hight tires I believe.
4th Gear Member
Joined: Jun 2005
Posts: 1,077
From:
RE: found out my speedo is off 10mph
ORIGINAL: 88BlueGT
I forget exactally how it goes. Jack it up in the rear so the tires are off the ground. Make a mark on the driveshaft (with a piece of chalk or something... even marker). I forget which way it is but for everytime your tires do a full rotation your driveshaft will spin 3.08 times, or 3.55 times, 3.73 times... depending on gear size thats the amount that your driveshaft will spin. This should work if you have stock hight tires I believe.
I forget exactally how it goes. Jack it up in the rear so the tires are off the ground. Make a mark on the driveshaft (with a piece of chalk or something... even marker). I forget which way it is but for everytime your tires do a full rotation your driveshaft will spin 3.08 times, or 3.55 times, 3.73 times... depending on gear size thats the amount that your driveshaft will spin. This should work if you have stock hight tires I believe.
Thread Starter
6th Gear Member
Joined: Jan 2006
Posts: 6,635
From: new jersey
RE: found out my speedo is off 10mph
yeah tires are 245/60/15's they actually sit a little taller than the stock 225's but that could be cause there was no tread on them when they came off
4th Gear Member
Joined: Jun 2005
Posts: 1,077
From:
RE: found out my speedo is off 10mph
ORIGINAL: HACKGT350
yeah tires are 245/60/15's they actually sit a little taller than the stock 225's but that could be cause there was no tread on them when they came off
yeah tires are 245/60/15's they actually sit a little taller than the stock 225's but that could be cause there was no tread on them when they came off
Thread Starter
6th Gear Member
Joined: Jan 2006
Posts: 6,635
From: new jersey
RE: found out my speedo is off 10mph
ORIGINAL: Blue Oval
well that accounts for about 3mph difference at 75mph, dunno where the other 7mph is coming from
ORIGINAL: HACKGT350
yeah tires are 245/60/15's they actually sit a little taller than the stock 225's but that could be cause there was no tread on them when they came off
yeah tires are 245/60/15's they actually sit a little taller than the stock 225's but that could be cause there was no tread on them when they came off
6th Gear Member
Joined: Sep 2005
Posts: 15,042
From: Hamilton, NJ
RE: found out my speedo is off 10mph
Are you sure that maybe he wasnt just lying to you? I mean, if I was a cop (who didnt like Mustangs lol) I would of definetly gave someone a ticket doing 85 in a 65.... he might of just been bull****ting.
Thread Starter
6th Gear Member
Joined: Jan 2006
Posts: 6,635
From: new jersey
RE: found out my speedo is off 10mph
could be but i was doing 75 on my way home this morning(going by speedo) and i was flying past people like it was my job
when i go to the track ill make sure to look at my speedo as i cross the line and see what it comes out to be on the slip
when i go to the track ill make sure to look at my speedo as i cross the line and see what it comes out to be on the slip
Thread Starter
6th Gear Member
Joined: Jan 2006
Posts: 6,635
From: new jersey
RE: found out my speedo is off 10mph
well i popped my hood about an hour ago and my electric fan was just dangling in front of the radiator. the zip ties snapped off and it was like a hair away from the water pump pulley. i dont know how it didnt get destroyed on my way home from vermont this morning. i didnt even notice anyhting was wrong when i turned it on sitting in traffic i didnt have a problem cooling or anything