Throttle pod adjustment
Discussion
Can anybody provide a desciption how to do properly?
I have to go 250 mls to the next TVR garage and i like to
do by my own. In former times i have done it already
with my Motorbike. But i did not know where to mount the vacuum
hoses from the vacuum gauges.
I have only 2 gauges, is this sufficent?
Regards
Uwe
I have to go 250 mls to the next TVR garage and i like to
do by my own. In former times i have done it already
with my Motorbike. But i did not know where to mount the vacuum
hoses from the vacuum gauges.
I have only 2 gauges, is this sufficent?
Regards
Uwe
Hi !
I think you are talking about throttle balancing and after that a adjustment of the throttle pots. The throttle pots should not need to be mechanicaly adjusted, only if you have changed them.
A couple of years ago I wrote this in a topic about throttle balancing:
To adjust the throttles you need a vacuum meter, like the old kind for carburators and the TVR laptop software. As a vacuum meter i have a vacuum meter as some people put on their cars to see if they drive fuelefficent or not. To get it connected to the throttles i have made a cap that fits on the throttle. On the cap there is a connection for the hose to the meter and another hole with a small metall piece that is adjustable over the hole so a can get a good vacuum reading. When you balance the engine it is not the value of the vacuum reading that is important it is that all the throttles have the same reading that is important.
With the engine on idle the throttle pot readings should be 15-16 %, both of them within 0.5% or less. The best way of checking this is to have the laptop program connected to the ECU.
To adjust the throttles i have been doing like this:
1. Take of the air box
2. With the engine on idle measure the vacuum on throttle three from the front of the engine.
3. Adjust Throttle 2 from the front to the same value by turning the little adjust screw between the two throttles
4. When throttle two is ok then adjust throttle 1. When these three are even on the vacuum meter you have engine bank 1 adjusted.
5. Now start on throttle 4 and adjust it to the same value as no 1 - 3
6. Repeat on throttle 5 and 6.
7. Check the throttle pot values on the PC, reset with the software if necessary.
8. Reset the adptive maps, if this is not done the engine will still run on the values it has in the adaptive maps. When you do this reset and the engine is correct setup you can hear the difference in how it is running. It just gets smoother as mentioned earlier.
9. Done, time for test run.
Some pics of my vacuum meter gear
The software is possible to download from member Byker28i:s homepage. You can find the homepage if you check his profile.
//Peter
I think you are talking about throttle balancing and after that a adjustment of the throttle pots. The throttle pots should not need to be mechanicaly adjusted, only if you have changed them.
A couple of years ago I wrote this in a topic about throttle balancing:
To adjust the throttles you need a vacuum meter, like the old kind for carburators and the TVR laptop software. As a vacuum meter i have a vacuum meter as some people put on their cars to see if they drive fuelefficent or not. To get it connected to the throttles i have made a cap that fits on the throttle. On the cap there is a connection for the hose to the meter and another hole with a small metall piece that is adjustable over the hole so a can get a good vacuum reading. When you balance the engine it is not the value of the vacuum reading that is important it is that all the throttles have the same reading that is important.
With the engine on idle the throttle pot readings should be 15-16 %, both of them within 0.5% or less. The best way of checking this is to have the laptop program connected to the ECU.
To adjust the throttles i have been doing like this:
1. Take of the air box
2. With the engine on idle measure the vacuum on throttle three from the front of the engine.
3. Adjust Throttle 2 from the front to the same value by turning the little adjust screw between the two throttles
4. When throttle two is ok then adjust throttle 1. When these three are even on the vacuum meter you have engine bank 1 adjusted.
5. Now start on throttle 4 and adjust it to the same value as no 1 - 3
6. Repeat on throttle 5 and 6.
7. Check the throttle pot values on the PC, reset with the software if necessary.
8. Reset the adptive maps, if this is not done the engine will still run on the values it has in the adaptive maps. When you do this reset and the engine is correct setup you can hear the difference in how it is running. It just gets smoother as mentioned earlier.
9. Done, time for test run.
Some pics of my vacuum meter gear
The software is possible to download from member Byker28i:s homepage. You can find the homepage if you check his profile.
//Peter
Edited by Peppe on Saturday 6th June 07:04
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