Can closed valves hurt the engine?
Discussion
Good morning everyone.
Those who have followed my previous posts know that I put the 200 cells on my aston Martin Vantage V8 2005
At first it was very noisy in the city, I solved it by putting the fuse 22 and now I am satisfied.
The valves only open if I press the pedal all the way down, but for going to the city the noise is pleasant
The problem comes on open roads, at a cruising speed of 150 km per hour and more with open roads in four lanes my ears break out and it is difficult to speak in the cockpit
I thought I'd fix it with this
https://www.cccharger.co.uk/product-page/exhaust-r...
In your opinion, traveling for two hours at 150 / 200 km per hour with the valves closed can create engine problems.
?
Those who have followed my previous posts know that I put the 200 cells on my aston Martin Vantage V8 2005
At first it was very noisy in the city, I solved it by putting the fuse 22 and now I am satisfied.
The valves only open if I press the pedal all the way down, but for going to the city the noise is pleasant
The problem comes on open roads, at a cruising speed of 150 km per hour and more with open roads in four lanes my ears break out and it is difficult to speak in the cockpit
I thought I'd fix it with this
https://www.cccharger.co.uk/product-page/exhaust-r...
In your opinion, traveling for two hours at 150 / 200 km per hour with the valves closed can create engine problems.
?
CCCharger won't solve your problem, all it does it replicate removing/replacing fuse 22.
Valves open at idle and above 3500/4000 rpm irrelevant of how much you have your foot down, the switch will just have them in auto or open permanently.
You need a 3 way switch.
https://db9s.com/aston-martin-3-way-switchable-exh...
Valves open at idle and above 3500/4000 rpm irrelevant of how much you have your foot down, the switch will just have them in auto or open permanently.
You need a 3 way switch.
https://db9s.com/aston-martin-3-way-switchable-exh...
Buzzi77 said:
I put the 200 cells on my aston Martin Vantage V8 2005
The problem comes on open roads, at a cruising speed of 150 km per hour and more with open roads in four lanes my ears break out and it is difficult to speak in the cockpit
The problem comes on open roads, at a cruising speed of 150 km per hour and more with open roads in four lanes my ears break out and it is difficult to speak in the cockpit
Difficult to speak in the cockpit !!!!
That is not good.
You should have followed my original and cheaper suggestion.
It achieves perfection. You can have the cars original level of sound in the cockpit and hooligan exhaust on full acceleration.
Only 2005 to 2010 cars are suitable.
If you kept the original cats, then you can do it.
Edited by Dewi 2 on Monday 5th January 08:30
I was told by a tech at the local AM dealer that keeping the valves closed could cause the exhaust & back box to overheat.
However BR & other specialists fit 3 way switches to close the valves to enable cars to meet the sound restrictions on track days. I wouldn’t imagine there’s a situation where exhausts get hotter than on a track day.
So as usual you pays your money and takes your chances.
However BR & other specialists fit 3 way switches to close the valves to enable cars to meet the sound restrictions on track days. I wouldn’t imagine there’s a situation where exhausts get hotter than on a track day.
So as usual you pays your money and takes your chances.
DB9S Paul said:
CCCharger won't solve your problem, all it does it replicate removing/replacing fuse 22.
Valves open at idle and above 3500/4000 rpm irrelevant of how much you have your foot down, the switch will just have them in auto or open permanently.
You need a 3 way switch.
https://db9s.com/aston-martin-3-way-switchable-exh...
Thank you. At this point I keep them closed for the long journey. Valves open at idle and above 3500/4000 rpm irrelevant of how much you have your foot down, the switch will just have them in auto or open permanently.
You need a 3 way switch.
https://db9s.com/aston-martin-3-way-switchable-exh...
EVR said:
Yeah, it seems that Buzzi just posts over and over the same problem? I though you guys already gave him some hints... 
The situation is quite different. The suggestions served me well. My question is: is running at 200 km/h with closed valves bad for the engine?
If you check my posts there is no such question. Thank you for your intervention useful to nothing
Caslad said:
I was told by a tech at the local AM dealer that keeping the valves closed could cause the exhaust & back box to overheat.
However BR & other specialists fit 3 way switches to close the valves to enable cars to meet the sound restrictions on track days. I wouldn t imagine there s a situation where exhausts get hotter than on a track day.
So as usual you pays your money and takes your chances.
Yes, I have spoken to other installers. I order the three-way! Thank you However BR & other specialists fit 3 way switches to close the valves to enable cars to meet the sound restrictions on track days. I wouldn t imagine there s a situation where exhausts get hotter than on a track day.
So as usual you pays your money and takes your chances.
Caslad said:
I was told by a tech at the local AM dealer that keeping the valves closed could cause the exhaust & back box to overheat.
However BR & other specialists fit 3 way switches to close the valves to enable cars to meet the sound restrictions on track days. I wouldn't imagine there's a situation where exhausts get hotter than on a track day.
So as usual you pays your money and takes your chances.
However BR & other specialists fit 3 way switches to close the valves to enable cars to meet the sound restrictions on track days. I wouldn't imagine there's a situation where exhausts get hotter than on a track day.
So as usual you pays your money and takes your chances.
I don't think that AM tech considered the circumstances properly.
When an OEM AM car is being driven on a motorway at legal speeds, what position are the exhaust valves in?
Revs are below the valves opening point, so you are possibly doing a very long trip with closed exhaust valves.
I am sure AML must approve.
Track days involve static noise tests before driving on track.
Do you think the switch might be 'accidentally' moved when on the track, to increase the driving enjoyment and produce a few more horsepower?
One sensible requirement for a 3-way switch, is being considerate to near neighbours during early starts.
The OEM valves are open up to about 1,500 rpm. A wired switch can close them.
EVR said:
Buzzi77 said:
Thank you for your intervention useful to nothing
...says the one that replied in my thread just to say that the new Vantage is ugly... 
Edited by Buzzi77 on Monday 5th January 21:11
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