[DeTomaso] Stage 1 - Complete!

Mon Mar 31 01:31:08 EDT 2008

Erik,

Sounds like have a solid car.

With stock ZF gears and 335/35-17 tires 2,500 rpm would be an  actual 65.6 
mph with an indicated 67.7 mph.

At 3000 rpm, a Pantera with stock ZF and 255/60-15 rear  tires (i.e. OEM 
stock size) will be traveling  81 mph. 

The original Pantera H60V15 tires are 27.08 inches in  diameter.
Your 335/35-17 tires are 26.23 inches in diameter.
For every revolution of your rear tire the speedo will think it has  gone 
103.24% (27.08/26.23) farther than it actually has gone. This means your  speedo 
will indicate 3.24% faster than you are traveling.
At 90 mph indicated your GPS speed should have been  87.2 mph.

At _http://www.panteraplace.com/page32.htm_ 
(http://www.panteraplace.com/page32.htm)  you  will find a downloadable Excel spreadsheet which is just the 
tool for these  calculations.

Have fun,

SOBill  Taylor
sobill at aol.com 

In a message dated 3/30/2008 3:45:13 P.M. Pacific Daylight Time,  
ea2010 at yahoo.com writes:

Well, I  was shitting my pants over the thought of picking up my new cat in 
Phoenix -  and then driving it 500-odd miles to San Diego in the middle of 
95-degree  mid-day desert heat (pavement temp was 105F) ... but we pulled off the 
trip  this past Tuesday (March 25th) without incident. Stage 1 - Complete!

A  little background: I agreed to terms on #3528 a few weeks ago and was 
offered  free transport (by my cousin and his partner in the car biz) to the  
Alberta-Montana border ... but I had to get the car from Phoenix to San Diego  to 
take advantage of their generous offer. The car has been completely  restored 
(exclusively by Les Gray) but had only been driven a total of 2,000  miles - 
and never more than 100 miles in one day - over the five years it was  owned 
previously. So, although my inspection and test drive indicated a  totally solid 
car, I was still - you know - a little nervous ...

There  was a certain level of stress expected on this day, which began with a 
late  arrival to the San Diego airport, a 90-minute flight delay and then 
grew upon  arrival to Phoenix as an accident on the southbound lane of the I17 
north of  the 101 occurred on our way to get the car (which was stored in 
Anthem). We  would have to take that very southbound route if we were to hit the I8 
(via  I10) to get back to SD via Yuma. Well, with the temp still soaring as we 
made  our departure, we decided to take AZ Highway 74 to Highway 60 west for 
120  miles where it meets up with the I10. 

I tell ya: although it took us a  few hours longer to get to SD, that was a 
great move. Highway 60 was barren of  traffic and we kept the cat moving bri
skly at 70-80 MPH the entire ride, which  translated into avoiding any 
possibility of over-heating stuck in 5 MPH  traffic crawling on the I17. It also gave us 
plenty of time to keep an eye on  the gauges, which seemed to settle in as 
follows: oil pressure (dead centered  between 35-70), temp (just a hair below 
200F) and Tach (2500 RPM's at 80  MPH).

Rather than detail the otherwise uneventful remainder of the trip  (again, 
she was running so smooooth), I do have a few observations to share  and would 
appreciate your commentary ...

1. regarding the temp I was  running ... it appears that - once warm - my cat 
like to run just a sliver  under 200F. I did punch it from 80 MPH to around 
110 MPH on a few occasions (I  couldn't help myself!) in which case the temp 
would rise just a sliver OVER  200F. But, all in all, I would say the car likes 
to run at 200F. I am  wondering if this is a normal temp to expect?

2. RPM's ... my cousin  and I both seemed to think the car was running at 
higher RPM's than indicated:  2000 at 65 MPH, 2200 at 75 MPH and 2500 (dead on) 
at 80 MPH. Without  down-shifting, I was able to go from 80 to 100 MPH in 5th 
without much  pressure on the accelerator - immediate responsiveness. I am 
thinking of  getting the Tach tested and possibly re-calibrated. Would you agree?

3.  speed ... at 90 MPH on the speedo, my hand-held GPS showed a speed of 81 
MPH.  I realize that the tires I am running (245/45 front and 335/35 rear on 
17"  wheels) are one reason for the discrepancy; however, should the speed be 
off  by that much?

Well, that's my trip recap in a nutshell. I am hoping to  have the car home 
in two weeks - so you can appreciate why I have so much time  on my hands 
today! Thanks, in advance, for any feedback you have re: my  questions above ...

Erik

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