Ian,
I can tell you that with that size tire I was turning about 3500 RPM at 70
MPH in 4th gear with the stock diff. 60 MPH was about 3000 RPM. I'm guessing
that the rebuild has given you a very accurate tach now. I have a graph
comparing my old TR6 tranny to the Toyota 5 speed here
http://tr6.danielsonfamily.org/5speedRatio.htm
Bob Danielson
1975 TR6 CF38503U
Running w/ Throttle Body Injection
Toyota 5 Speed & Nissan LSD
http://tr6.danielsonfamily.org
-----Original Message-----
From: 6pack-bounces+75tr6=tr6.danielsonfamily.org@autox.team.net
[mailto:6pack-bounces+75tr6=tr6.danielsonfamily.org@autox.team.net] On
Behalf Of Ian Breyer
Sent: Monday, September 15, 2008 12:52 PM
To: 6pack@autox.team.net
Subject: [6pack] tachometer rebuild
Hi all. I am hoping you guys can provide some insight.
I just had my tachometer rebuilt by Nissonger Instruments. They did a real
nice job and it is working much better than before. There is no longer any
bounce and it isn't hanging up and jumping all over the place. My only
question is that it use to register 3,000 RPMs in 4th gear when I was doing
70 MPH. Now it is about 3,600 in 4th gear at that speed. Of course I have
always had my doubts about the accuracy of the speedo as well. I am running
205/70/15 tires. The transmission and rear end are stock. No overdrive. Is
this normal?
Ian
Ian Breyer
72 TR6 Jasmin Yellow
New Haven, CT
home email: ianbreyer@yahoo.com
work email: ibreyer@hartynet.com
6pack@autox.team.net
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