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Home > Technical Chat > Valve size

Chris.williams

13 Posts
Member #: 11881
Member

New Zealand

12th May, 2019 at 08:45:03pm

Hi guys,

Is it worth going to a 31mm exhaust valve on a supercharged 1275?
Currently metro sized 29.3.
Will they fit with the 35.7 inlet without making the space between them to small?
Is going to a 30mm going to be any better?

Thanks
Chris

Tom Fenton
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15300 Posts
Member #: 337
Fearless Tom Fenton, Avon Park 2007 & 2008 class D winner

&

TM legend.

Rotherham South Yorkshire

13th May, 2019 at 08:26:19am

Personal opinion, if you want more power change the pulleys for more boost rather than changing valve sizes


On 29th Nov, 2016 madmk1 said:

On 28th Nov, 2016 Rob Gavin said:
 I refuse to pay for anything else


Like fuel 😂😂
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