I have a 2L redtop with type 9 gbox, ihave 1300 gl clocks and the speed is registering completly wrong (shows im goin much faster than im actually going about 85mph is really 70mph) its clocking up alot more miles than i want to (limited miles insurance)

 

The engine's irrelevant, the speedo is getting it's reading from the box I assume, the std type 9 place ?
The oe speedo will have been made with a certain turns per mile Known of the output from gearbox and the rear axle/tyre size.
Change anyone of these and the speedo will need recalibrating, around Ł50, speedy cables in wales do this.
Just need to give them the gearing details of top gear of box, diff, overall tyre size/turns per mile, and they'll do the rest.
tabetha

 

many thanks for that, I gave them a ring, all they wanted to know was how much faster the speedo was, Ł55 plus cartage

 

At least you live somewhere nice, I love Wales, can't wait to go back, around Betswy Coed(sp), and Fron.
tabetha

 

yes Wales is nice I take it for granted, Fron? thats close to me if it's the same place your talking about