[Healeys] Gunson Colortune

[Bob Spidell]

Would be very interested in exactly how you did this. How do you isolate an O2 sensor? They emit a (very small) voltage signal, referenced to chassis ground, and I was told by K&N tech support that their indicators absolutely would not work on +gnd, because of their input polarity (isolation or no). 


Bob 


-------------------------------- 
Bob Spidell - San Jose, CA 

----- Original Message -----


You can use it on + ground cars with no problem. Just have to isolate it from the chassis. My car is also + ground. 
BTW it may be good to point out, that there are two different types of O2 sensors awailable. The wideband and the narrow band. Though the narrow band may be usefull as a controll device, it is not particulary usefull when setting up an engine. Esp. if the negine is nonstandard. 

Gergo 



2011/11/17 Bob Spidell < bspidell at comcast.net > 


Unfortunately, no help for us with 'pure' British essence: positive ground (yes, I know some 'Merkin cars were +gnd, too). 

Bob 



On 11/17/2011 5:59 AM, Steve B. Gerow wrote: 

<blockquote>
I went to an air-fuel meter, the K&N: 

http://tinyurl.com/76t9dlb 

I mounted two O2 sensors on the downpipes with a dash switch between the two. 

I agree this is the best way to go because you can watch each carb's mixture while driving. 

Note - you don't have to buy their O2 sensors - any single wire sensor will do. 






-- 
****************************** ****************************** ******* 
Bob Spidell San Jose, CA bspidell at comcast.net 

****************************** ****************************** ******* 



______________________________ _________________ 
Healeys at autox.team.net 
Donate: http://www.team.net/donate. html 
Suggested annual donation $12.75 
Archive: http://www.team.net/archive 
Forums: http://www.team.net/forums 
Unsubscribe/Manage: http://autox.team.net/mailman/ options/healeys/pajtamuvek@ gmail.com 

</blockquote>