FJowners.com

General Category => Yamaha FJ1100 / FJ1200 Running Problems => Topic started by: irishbiker on August 06, 2014, 11:08:23 AM

Title: petrol tank swap
Post by: irishbiker on August 06, 2014, 11:08:23 AM
hello there guys , need some help . I'm working on a 89 3cv/3cw . I'm wondering if anyone has used a 1tx tank 86 on theirs if so any issues?
Title: Re: petrol tank swap
Post by: aviationfred on August 06, 2014, 12:52:51 PM
I don't know of anyone that has, I do know that the petcocks are different and they do not easily interchange.

The 86' petcock has a diaphragm and uses vacuum to operate. The 89' petcock is a free flow type and has the fuel pump to feed the carbs.

Fred
Title: Re: petrol tank swap
Post by: Pat Conlon on August 06, 2014, 06:41:23 PM
It can be done if you switch to the oem '84/85 petcock and put that petcock in the 'Prime' position.
A less expensive alternative is a adaptor plate and a aftermarket petcock, left in the open position.
I recall Randy @ RPM sells that adaptor and petcock.

Hope this helps. Pat

[edit] yep, here it is: http://www.rpmracingca.com/search.asp?pg=1&stext=Petcock&sprice=&stype=&scat=&sman= (http://www.rpmracingca.com/search.asp?pg=1&stext=Petcock&sprice=&stype=&scat=&sman=)