The V8 Owners Forum -

Anyone used a colortune (darn American spelling on a Rover V8. Standard manifold so I guess you would use one cylinder for one carb, the another cylinder to set the other one!
I am also thinking of the Gunson balancer....again your thoughts are welcome!

Will Reeve wrote:Anyone used a colortune (darn American spelling on a Rover V8. Standard manifold so I guess you would use one cylinder for one carb, the another cylinder to set the other one!
I am also thinking of the Gunson balancer....again your thoughts are welcome!

Personally I don't think much of them (colortune that is). Even if it does work you could only use it for the idle circuit anyway. (Unless you can find a dwarf that is willing to climb into the engine bay before you go for a drive!

I used Colortune for 12 years when running a MGB-engined kit car, then an MGB and found it really useful and easy to use. So, good for use with carbed engines.

I've never used it on my V8, but your question has set me thinking ...

Will Reeve wrote:Anyone used a colortune (darn American spelling on a Rover V8. Standard manifold so I guess you would use one cylinder for one carb, the another cylinder to set the other one!
I am also thinking of the Gunson balancer....again your thoughts are welcome!

Assuming SUs, you can check the idle mixture by lifting the piston slightly. About a couple of MM. This weakens the mixture a tad, and with the correct idle mixture the speed won't change. If it goes up and stays faster, it's too rich. If is slows, too weak.

A pair of disposable stethoscopes - about a fiver - and half decent ears will balance the carbs as well as anything else.

I've used the carbalancer on my twin SU's - works well.

Chris.

Bit late i know, I have used the colour tune on my v8 and balancer, im running quad downdrafts, balancing is easy when you practiced and as for the colourtune I found when set as the instructions it was actually a little rich, done final adjustments by hand, easy telling it was rich as black spots all over paintwork on rear.

sidecar wrote:

Will Reeve wrote:Anyone used a colortune (darn American spelling on a Rover V8. Standard manifold so I guess you would use one cylinder for one carb, the another cylinder to set the other one!
I am also thinking of the Gunson balancer....again your thoughts are welcome!

Personally I don't think much of them (colortune that is). Even if it does work you could only use it for the idle circuit anyway. (Unless you can find a dwarf that is willing to climb into the engine bay before you go for a drive!

You could volunteer for that job yourself Pete!

Muscle-Manta wrote:

sidecar wrote:

Will Reeve wrote:Anyone used a colortune (darn American spelling on a Rover V8. Standard manifold so I guess you would use one cylinder for one carb, the another cylinder to set the other one!
I am also thinking of the Gunson balancer....again your thoughts are welcome!

Personally I don't think much of them (colortune that is). Even if it does work you could only use it for the idle circuit anyway. (Unless you can find a dwarf that is willing to climb into the engine bay before you go for a drive!

You could volunteer for that job yourself Pete!

Er, I'll stick to trying to read my LC1 AFR gauge from the comfort of my drivers seat thank you!

You can carry on trying to find anyone mad (or daft) enough to read your's whilst sat in the passenger seat. Come to think of it your engine bay may well be safer than your passenger seat!