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 Vacuum ports connections

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Omnis
Grignapoco
Grignapoco


Posts : 112
Join date : 2014-10-06

PostSubject: Vacuum ports connections   Tue Jun 07, 2016 7:12 am

Question : on my 2012 Tenni the vapour recycler has been taken out. I noticed that the left and right vacuum ports on the TB are connected together. See pics.
Should they? I have seen write ups about synching the TB that mentions the vacuum ports as being screwed shut.
Thanks.
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Pete Roper
GRiSO
GRiSO


Posts : 3783
Join date : 2013-05-29
Age : 59

PostSubject: Re: Vacuum ports connections   Tue Jun 07, 2016 10:28 am

I think you are confusing the vacuum ports with the air bleeds.

Pete
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beetle
GRiSO
GRiSO


Posts : 3976
Join date : 2013-09-30

PostSubject: Re: Vacuum ports connections   Tue Jun 07, 2016 2:22 pm

I don't think they should be connected together. It kind of negates the whole idea of balance.
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Pete Roper
GRiSO
GRiSO


Posts : 3783
Join date : 2013-05-29
Age : 59

PostSubject: Re: Vacuum ports connections   Tue Jun 07, 2016 2:44 pm

Yah, it's a simplistic solution but a commonly used one and it doesn't seem to cause any issues.
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ghezzi
Fra Cristoforo
Fra Cristoforo


Posts : 1699
Join date : 2014-05-22
Age : 59

PostSubject: Re: Vacuum ports connections   Tue Jun 07, 2016 3:03 pm

That is a 30 year old Yamaha design, link the inlets together by hose.
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beetle
GRiSO
GRiSO


Posts : 3976
Join date : 2013-09-30

PostSubject: Re: Vacuum ports connections   Tue Jun 07, 2016 3:17 pm

I don't like it.
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Omnis
Grignapoco
Grignapoco


Posts : 112
Join date : 2014-10-06

PostSubject: Re: Vacuum ports connections   Tue Jun 07, 2016 4:49 pm

Agree it didn't seem to cause any problems but seems counterintuitive that's why the air bleed valves are adjusted for balancing the idle speed
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beetle
GRiSO
GRiSO


Posts : 3976
Join date : 2013-09-30

PostSubject: Re: Vacuum ports connections   Tue Jun 07, 2016 5:27 pm

Agree 100%.
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PostSubject: Re: Vacuum ports connections   Today at 7:57 pm

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