rear end changed gearing ratio? - Page 2

cre · 06-06-2010, 04:34 PM

If the speedo's only a constant 2MPH off then your tach's screwy or your igniter is... Roll the car slowly across a measured one mile segment of road and see if the odometer is reading accurately. If it's right on the mark just more the speedo needle to set everything right.

And if your speedo is 2 MPH off at 10MPH and still only 2MPH off at 100MPH feel lucky, the speedo was blessed by god himself.

Bru · 06-06-2010, 08:13 PM

Quote:

Originally Posted by Green7mgte

http://www.toyotaparts123.com/partlo...5450&year=1992

store to buy OEM parts.

spirit of the supra hu. cool. good luck with your build. welcome to the board.

Here is a online price comparison for the same part:
Passenger side door molding 86-88.

Toyota World $166.42
Toyota Parts Barn $162.50
Toyota Parts 123 $156.50

Shipping and taxes (if any) may vary depending on where you live.

turbonicsperformance · 06-07-2010, 03:44 AM

Quote:

Originally Posted by cre

If the speedo's only a constant 2MPH off then your tach's screwy or your igniter is... Roll the car slowly across a measured one mile segment of road and see if the odometer is reading accurately. If it's right on the mark just more the speedo needle to set everything right.

And if your speedo is 2 MPH off at 10MPH and still only 2MPH off at 100MPH feel lucky, the speedo was blessed by god himself.

its 2 mph off at 20 30 40 50 but he is still a cop and wouldnt let me speed so i couldnt test any faster and what did you mean by "more the speedo needle" im sure its just a typo but i cant think of what you might be trying to say

cre · 06-07-2010, 04:09 AM

Meant to say, "move". Pull the needle off, and put it back on so it'll show correctly.

Ranma · 08-23-2010, 06:34 PM

cre, the policemen in Oklahoma are anal retentive. Got pulled over for doing 79 in the 75 mph of the Will Rogers. Probably next time I will get a regular ticket instead of the warning.
Can it be fixed, is removing and replacing best? I hate the ideal of having after market stuff blocking my view.

Green7mgte · 08-24-2010, 01:19 AM

Quote:

Originally Posted by Bru

Here is a online price comparison for the same part:
Passenger side door molding 86-88.

Toyota World $166.42
Toyota Parts Barn $162.50
Toyota Parts 123 $156.50

Shipping and taxes (if any) may vary depending on where you live.

yea i just dropped a link from one of my book marks. I have several companys I go through for oem parts. In fact when I want to buy something I load all of them and see which one is the cheapest.

cre · 08-24-2010, 04:14 AM

If the speedometer is off but all the gearing is right you can recalibrate the gauge. There is an arm behind the face which adjusts it my percentage and flat out moving the needle is what you'll do fix a constant offset (ie: it's ALWAYS 5 MPH low).

If the gearing does NOT match you may swap out the speedometer driven gear or worst case swap out the diff to make everything right.

You may recalibrate the gauge to make the speed report accurately without changing any gearing (diff or speedo drive gear) BUT the odometer will still be off.

When changing to a different diff the proper course of action is to change the speedometer drive gear for one the appropriate size or to install small gear box which changes rate at which the speedometer cable spins (there are actually shops that do just this).

06-06-2010, 04:34 PM	#11
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	If the speedo's only a constant 2MPH off then your tach's screwy or your igniter is... Roll the car slowly across a measured one mile segment of road and see if the odometer is reading accurately. If it's right on the mark just more the speedo needle to set everything right. And if your speedo is 2 MPH off at 10MPH and still only 2MPH off at 100MPH feel lucky, the speedo was blessed by god himself. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

06-07-2010, 04:09 AM	#14
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Meant to say, "move". Pull the needle off, and put it back on so it'll show correctly. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

08-23-2010, 06:34 PM	#15
Ranma 12psi boost Join Date: Jun 2010 Location: Claremore, OK Posts: 326 Blog Entries: 10	cre, the policemen in Oklahoma are anal retentive. Got pulled over for doing 79 in the 75 mph of the Will Rogers. Probably next time I will get a regular ticket instead of the warning. Can it be fixed, is removing and replacing best? I hate the ideal of having after market stuff blocking my view. __________________ 1986 Mk III MA70 7MGE Targa Top 5 Speed Stock Exhaust

08-24-2010, 04:14 AM	#17
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	If the speedometer is off but all the gearing is right you can recalibrate the gauge. There is an arm behind the face which adjusts it my percentage and flat out moving the needle is what you'll do fix a constant offset (ie: it's ALWAYS 5 MPH low). If the gearing does NOT match you may swap out the speedometer driven gear or worst case swap out the diff to make everything right. You may recalibrate the gauge to make the speed report accurately without changing any gearing (diff or speedo drive gear) BUT the odometer will still be off. When changing to a different diff the proper course of action is to change the speedometer drive gear for one the appropriate size or to install small gear box which changes rate at which the speedometer cable spins (there are actually shops that do just this). __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

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