A/8 transmission question
Thread Starter
Burning Brakes
Joined: May 2009
Posts: 1,053
Likes: 194
From: So Cal
A/8 transmission question
Ok, got an A/8 on order, and with the problems of the A/7, I am a bit worried. Is there anything I can do extra to protect the A/8 from blowing up like A/7.
Team Owner
Joined: Apr 2013
Posts: 26,243
Likes: 4,361
From: Chirper Island
Race Director
Joined: Oct 1999
Posts: 17,710
Likes: 1,219
From: Phila PA, Bonita Springs FL
You can either drive in manual mode, use the plug in Range device or use the Diablosport Intune to disable V4 mode, commonly called AFM (Active Fuel Management, or DoD, (Displacement on Demand)
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Team Owner
Joined: Sep 1999
Posts: 41,732
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From: Springfield MO
Safety Car
Joined: Jan 2014
Posts: 4,496
Likes: 856
From: Walhalla South Carolina
There is no A7 to my knowledge only A8. The 2014 had the last A6 which was bullet proof. There is a M7 but no A7. Like others said there are good and bad A8's. I drive in M most of the time except in the City but on the road I use M mode to keep it out of V4 mode. Enjoy your new ride.
Race Director
Joined: Oct 1999
Posts: 17,710
Likes: 1,219
From: Phila PA, Bonita Springs FL
Driving/staying in V8 mode is safe, doesn't take much effort, and gives the "extra" he was asking for....
Safety Car
Joined: Aug 2012
Posts: 3,960
Likes: 1,106
Old Joe has been posting that photo forever. Companies keep replacements for every transmission they sell in the repair inventory because, guess what, they all have instances of failure from the cheapest Chinese stuff through industrial Allison and Aisin transmissions.
The A8 in my 2016 Z06 works beautifully in all kinds of driving conditions however I do NOT let the engine go into V4 mode because constant modulation of the torque converter clutch is going to increase wear-there is no way you can constantly cycle a friction clutch multiple times per second without having far greater wear than one that locks and stays locked at cruising speed. Different fluids with different levels of friction modifiers can reduce and mask the issue but they don't make it go away.
The A8 in my 2016 Z06 works beautifully in all kinds of driving conditions however I do NOT let the engine go into V4 mode because constant modulation of the torque converter clutch is going to increase wear-there is no way you can constantly cycle a friction clutch multiple times per second without having far greater wear than one that locks and stays locked at cruising speed. Different fluids with different levels of friction modifiers can reduce and mask the issue but they don't make it go away.
Last edited by NSC5; Feb 11, 2018 at 11:17 AM.
Melting Slicks
Joined: Jan 2013
Posts: 2,576
Likes: 237
From: Murphy NC
All V8 mode adds wasted gasoline.
Burning Brakes
Joined: Jul 2016
Posts: 1,239
Likes: 823
From: Wilmington Ma
2016 here, December 2015 build. No A8 problems yet with 10K on it. Only issue i ever experience is hard shift from 1st to second after it has been sitting for a while and i drive it in cold temps. after it warms up its smooth as silk
Drifting
Joined: Jun 2000
Posts: 1,872
Likes: 294
From: St. Louis MO
Three sides to every story. Was this car beaten like a rented mule? Modifications? And, of course, a valid warranty claim / manufacturing defect. My A8 is a hoot! Runs like a top.
