The New And Improved Unofficial R65 Forum V2

Technical Discussion => BMW Technical Q&A, Primarily R65 => Topic started by: beemer on June 30, 2009, 03:42:25 AM

Title: Gunson's colourtune?
Post by: beemer on June 30, 2009, 03:42:25 AM

Has anyone ever used a Gunson's Colour Tune to set the mixture on the R65?is so,how as it?

Title: Re: Gunson's colourtune?
Post by: montmil on June 30, 2009, 06:38:31 AM

Don't recall the manufacturer's name but I had a ColorTune way back in the day. I attempted to figure it all out but finally quit trying. Not sure if it was Snake Oil or not.   Monte

Title: Re: Gunson's colourtune?
Post by: ukzknos on June 30, 2009, 07:00:38 AM

Hi Beemer

Yes I have one and, in conjuction with balanced carbs gives superb results!
Highly recommended  :)

I think they are still available at Halfords for about 20 quid.

Title: Re: Gunson's colourtune?
Post by: beemer on June 30, 2009, 09:40:30 AM

Quote

Hi Beemer

Yes I have one and, in conjuction with balanced carbs gives superb results!
Highly recommended  :)

I think they are still available at Halfords for about 20 quid.

Thanks for  that,is it the standard model you need?or something just for motorcycles?

Title: Re: Gunson's colourtune?
Post by: ukzknos on June 30, 2009, 10:15:39 AM

Beemer

It is the 'standard' 14mm plug version, see link:

http://www.halfords.com/webapp/wcs/stores/servlet/product_storeId_10001_catalogId_10151_productId_189330_langId_-1_categoryId_165557

Good old airheads with 14mm plugs as the 12mm &10mm plug colortune are more expensive!

Title: Re: Gunson's colourtune?
Post by: beemer on June 30, 2009, 10:27:18 AM

Quote

Beemer

It is the 'standard' 14mm plug version, see link:

http://www.halfords.com/webapp/wcs/stores/servlet/product_storeId_10001_catalogId_10151_productId_189330_langId_-1_categoryId_165557

Good old airheads with 14mm plugs as the 12mm &10mm plug colortune are more expensive!

I have one of these!!had it for years,not sure if it's the Gunson's 500 model which has a tapered thread i believe,it's quite short,and i was wondering if it might blow out!!which one do you have?

Title: Re: Gunson's colourtune?
Post by: Bob_Roller on June 30, 2009, 11:08:36 AM

I have what I believe is an older version of the Colortune .

It doesn't have what looks like the white ceramic insulator from a spark plug, over the clear glass viewing window .

Mine arcs across the glass surface, and 'shorts out' the ignition on the cylinder that it is installed in .

I've tried RTV type sealants over the center electrode where it goes into the glass, but still can't stop the arcing .

So be sure you get the newer model .

Title: Re: Gunson's colourtune?
Post by: beemer on June 30, 2009, 06:03:39 PM

Quote

I have what I believe is an older version of the Colortune .

It doesn't have what looks like the white ceramic insulator from a spark plug, over the clear glass viewing window .

Mine arcs across the glass surface, and 'shorts out' the ignition on the cylinder that it is installed in .

I've tried RTV type sealants over the center electrode where it goes into the glass, but still can't stop the arcing .

So be sure you get the newer model .

Mine actually has the ceramic insulator,so should be ok,i might give it a go tomorrow.

Title: Re: Gunson's colourtune?
Post by: beemer on July 01, 2009, 06:41:13 AM

Used the colortune this morning,what a great item this is,one carb was ok,the other slightly off!!!after adjustment,that nice blue colour shown in both pots, both are running in harmony,balanced the carbs afterwards and the job is a "good un". :)

Title: Re: Gunson's colourtune?
Post by: Motu on July 02, 2009, 12:44:44 AM

I have two Colourtunes....different models,but both work.I used then to set up twin cyl motorcycles.I haven't used them on the R65.....but will do if I want to set the idle again.