[ROVERNET - UK] Re: TC CARB TUNE
glenwilson at cavtel.net
Tue Jul 4 02:21:21 BST 2006
On Monday 03 July 2006 20:10, Eric Russell wrote:
> Another Gunson's product which I brought back from the
> UK is their CO Meter. This was particularly useful to
> get the Rover ready for the annual emissions test.
> Tweaking the carbs created a digital readout from the
> tailpipe and created a lesser burning sensation on the
> fingertips that the colortune. I was disappointed
> with how much yellow appeared in the window and
> difficult /impossible it was to achieve the "Bunsen
> burner" blue they recommend.
I had a similar experience with the Colortune, but in the end it turned out
that I couldn't get the perfect color because the carb was defective and not
able to get the mixture correct (leaks on the far side of the jet or
whatever). Also, on some engines there is always one cylinder which actually
can't be set the same as the others because of the design of the intake
manifold or the way it enters the chamber. I don't remember if it was the TC
or one of my old MGs, but the cylinder closest to the firewall was always
off. Of course, the best thing I ever did to the MGB was to install a single
Weber DGV. Transformed the car.
The Gunson CO meter only measures CO (as the name implies). When I was trying
to get my SD1 through inspection, it was easy to dial in the CO, but whenever
I did, the NO2 (?) would go out of tolerance on the shop's emissions
equipment. There's a tradeoff on that adjustment, as well.
~ Glen Wilson ~
Adding new stock daily...
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