Vanquish 6 speed auto to 8 speed transmission conversion - possible?
#1
11-14-2023, 08:59 PM
Join Date: Mar 2007
Location: california
Posts: 516
Rep Power: 38 
Vanquish 6 speed auto to 8 speed transmission conversion - possible?
I really love how the 8-speed transmission feels in the 2015+ Vanquish and have been on the hunt for a 2015+ Vanquish to replace my 2014 for over a year but can't land on the right spec. I just looked up a price for the 8-speed ZF8HP70 transmission and they range $4k - $6k, which I can live with. Does anyone know what else would be involved in swapping a 8-speed ZF8HP70 into a 13/14 Vanquish, especially the electronics?
#2
11-15-2023, 04:28 AM
I really love how the 8-speed transmission feels in the 2015+ Vanquish and have been on the hunt for a 2015+ Vanquish to replace my 2014 for over a year but can't land on the right spec. I just looked up a price for the 8-speed ZF8HP70 transmission and they range $4k - $6k, which I can live with. Does anyone know what else would be involved in swapping a 8-speed ZF8HP70 into a 13/14 Vanquish, especially the electronics?
The mechanical part, (if that's possible) would, by far, be the easy part.
#4
11-15-2023, 09:16 AM
Join Date: Mar 2007
Location: california
Posts: 516
Rep Power: 38
Do you mean early as in a Gen1 Vanquish or early as in a 2013/2014 Vanquish?
#5
11-15-2023, 09:17 AM
Join Date: Mar 2007
Location: california
Posts: 516
Rep Power: 38 The entire engine management system would need to be replaced, but then even if you could pull that part off, I don't think supporting (interfacing) systems would be compatible such as ABS, Active Handling, security, etc.
The mechanical part, (if that's possible) would, by far, be the easy part.
The mechanical part, (if that's possible) would, by far, be the easy part.
#7
11-15-2023, 04:46 PM
Join Date: Mar 2007
Location: california
Posts: 516
Rep Power: 38 I don't think you would have to change the whole setup. You would likely to have to re-program the Transmission Control Unit (TCU). I suspect that physically it will be the same (Bosch?) unit as the 6 speed controller. You would then need also to load suitable software into the engine ECUs. As Mat has just cracked the Bosch ECUs (He has a 6 speed VQ 310) I guess he will know how to do it.
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#8
11-16-2023, 09:31 AM
Join Date: Mar 2007
Location: california
Posts: 516
Rep Power: 38
Wonderful, thank you! Will stand by for your discovery.
#9
08-27-2024, 03:47 PM
I really love how the 8-speed transmission feels in the 2015+ Vanquish and have been on the hunt for a 2015+ Vanquish to replace my 2014 for over a year but can't land on the right spec. I just looked up a price for the 8-speed ZF8HP70 transmission and they range $4k - $6k, which I can live with. Does anyone know what else would be involved in swapping a 8-speed ZF8HP70 into a 13/14 Vanquish, especially the electronics
https://www.8speed.au/products/bmw-e...conversion-kit
I just asked him about the feasibility of doing this to my Aston. I will report back on the correspondence.
#12
08-27-2024, 07:55 PM
Just got a response Anton.
@ZeroTo60Tube | Firstly anything is possible. However, there is no chassis canbus support for the Aston Martin currently. The issue is when you remove the 6hp all the other modules in the car freak out. It will normally go to limp mode. So if you remove the original transmission, you need a way to pretend its still there. That is what this setup does with the BMW (every chassis has different messages, these BMW messages on work for one specific version of BMW electronics). Or you program the rest of the car to not look for those messages any more. I would love to do a 8hp in one of these early DB9s.... I absolutely love them. One day, if can beg borrow and steel my way to one, i will work out the electronic side for the trans swap.
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