Do 964s like to rev.
02-07-2007, 08:46 PM
#46
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Thanks for all the good reading on this one. I am already picking up the rpms between shifts from 4000k to 5200 to 5400. Runs strong. I am sure that I will on occasion take it up to low 6s but dont want the kill the motor either. great feed back thanks. Mike
02-07-2007, 08:50 PM
#47
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Have fun with it. 5400 rpm is just where it really starts to pull.
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Larry Herman
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Larry Herman
2016 Ford Transit Connect Titanium LWB
2018 Tesla Model 3 - Electricity can be fun!
Retired Club Racer & National PCA Instructor
Past Flames:
1994 RS America Club Racer
2004 GT3 Track Car
1984 911 Carrera Club Racer
1974 914/4 2.0 Track Car
CLICK HERE to see some of my ancient racing videos.
02-07-2007, 10:34 PM
#48
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Originally Posted by Red rooster
The DME rev limit will be slightly exceeded , especially in the lower gears , due to the motor inertia situation.
02-07-2007, 11:15 PM
#49
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Jason,
I always view the rev limit as the rpm where the fuel starts to turn off . The total turn off is pretty close.
The inertia part of the equation is tough to quantify. As we are talking about
motor inertia being translated into extra road speed , the load presented is the major element . From that , gear being used, uphill-down hill ,all have an influence.
I suppose we can take a little comfort in that all the normal compression loads are still present.
For race use I was always a big fan of the rev limit aproach warning light .
That removes the need to keep an eye on the rev counter .
Geoff
I always view the rev limit as the rpm where the fuel starts to turn off . The total turn off is pretty close.
The inertia part of the equation is tough to quantify. As we are talking about
motor inertia being translated into extra road speed , the load presented is the major element . From that , gear being used, uphill-down hill ,all have an influence.
I suppose we can take a little comfort in that all the normal compression loads are still present.
For race use I was always a big fan of the rev limit aproach warning light .
That removes the need to keep an eye on the rev counter .
Geoff
02-08-2007, 06:28 AM
#50
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In answer to the question, oh yes!! 
My Cup Car seems to have two 'switches' with both an audible and tactile change to acceleration at 4200 and 5400......
Those red change lights really useful, can be set up to change when you want -four reds and it's time to change......
My Cup Car seems to have two 'switches' with both an audible and tactile change to acceleration at 4200 and 5400......
Those red change lights really useful, can be set up to change when you want -four reds and it's time to change......
