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zathruss
Carlotto
Carlotto


Posts : 30
Join date : 2014-12-26

PostSubject: adjusting valves   Tue Jul 07, 2015 12:00 pm

I'm adjusting the valves tomorrow, just want to be sure 0.6 mL intake and 0.8 mL exhause....is that correct?

Vik
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Pete Roper
GRiSO
GRiSO


Posts : 3767
Join date : 2013-05-29
Age : 59

PostSubject: Re: adjusting valves   Tue Jul 07, 2015 2:02 pm

Good god no! We've probably confused you because most of us are old farts who grew up with imperial measurements! 6 and 8 are thousands of an inch! In metric measurements the clearances are 0.15 mm and 0.2 mm for inlet and exhaust valves respectively.

Pete
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Guzzi Cat
Grignapoco
Grignapoco


Posts : 178
Join date : 2014-09-02

PostSubject: Re: adjusting valves   Tue Jul 07, 2015 2:07 pm

0.15mm inlet and 0.20mm exhaust in new money or 6 & 8 thou in inches Thumbs Up

I see Pete beat me to it
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zathruss
Carlotto
Carlotto


Posts : 30
Join date : 2014-12-26

PostSubject: Re: adjusting valves   Tue Jul 07, 2015 5:35 pm

Thx Pete and guzzi cat. Disaster averted.I'm running a map from Mark. I will be resetting the tps and the autolearning. I'm thinking this is the right procedure.

Vik
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woodrow53
Squinternotto
Squinternotto


Posts : 7
Join date : 2015-02-19
Age : 63

PostSubject: Re: adjusting valves   Thu Jul 16, 2015 5:34 am

Is it not stated elsewhere in this forum that the clearances for the 2015 GRiSO 8V are .004 and .006, or am I just confused?
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Pete Roper
GRiSO
GRiSO


Posts : 3767
Join date : 2013-05-29
Age : 59

PostSubject: Re: adjusting valves   Thu Jul 16, 2015 12:00 pm

As far as I know the clearances were changed in about 2010 from 0.1 and 0.15, (4&6 thou) to 0.15 and 0.2, (6&8 thou.). If they have now been changed back to the earlier figures it will be for noise abatement purposes. If you're running the stock closed loop map it won't make a jot of difference. If you're running an open loop map it definitely will.

Interestingly now my bike is rollerised it's starting and warm up are different. I haven't had a chance to take it out for a serious flog yet to ascertain if it has has a major effect on performance but I'll be shortly rollerising Mark's and I'm sure that he'll go into an anally retentive frenzy and work out what, if anything, needs to be tweaked for differences between the roller and flat motors. Very Happy

Pete
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1151
Sfregiato
Sfregiato


Posts : 438
Join date : 2014-05-23

PostSubject: Re: adjusting valves   Thu Jul 16, 2015 12:20 pm

Fwiw Pete, will be interested in what you find re. the difference. Perhaps I missed this but what was the condition of your flat tappets when you switched over to the roller design?
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Pete Roper
GRiSO
GRiSO


Posts : 3767
Join date : 2013-05-29
Age : 59

PostSubject: Re: adjusting valves   Thu Jul 16, 2015 12:56 pm

See the 'What did you do with your GRiSO today thread.
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Bill Hagan
Sfregiato
Sfregiato


Posts : 465
Join date : 2014-07-03

PostSubject: Re: adjusting valves   Thu Jul 16, 2015 1:05 pm

Pete Roper wrote:
As far as I know the clearances were changed in about 2010 from 0.1 and 0.15, (4&6 thou) to 0.15 and 0.2, (6&8 thou.). If they have now been changed back to the earlier figures ...

****
Pete

Oh, good.  This will give me something to do when I get back home from  Atlanta and Kathi is gone.  I set 'em at 4T & 6T last month, but, sadly, have not ridden it.  Did start it to ensure I'd set 'em TDC, and will now no doubt need roller tappets sooner, I suppose. [Just kidding, Pete; don't flay me! Wink ]

Bill
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1151
Sfregiato
Sfregiato


Posts : 438
Join date : 2014-05-23

PostSubject: Re: adjusting valves   Thu Jul 16, 2015 2:36 pm

Pete Roper wrote:
See the 'What did you do with your GRiSO today thread.

Yeah, I missed that thanks!
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PostSubject: Re: adjusting valves   Today at 8:38 pm

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