UK Karting - Notice Board (4-Stroke Karting) : Re: Exhaust valve rotor on Pro Extreme engine.

Notice Board (4-Stroke Karting)

Re: Exhaust valve rotor on Pro Extreme engine.
Posted by 'Mark 71' on 25 Apr 2015 @ 09:40

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Mark 71Joined: July 2007
Total Posts: 43
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The valve springs are outside of the seals so that owners can change them. I changed mine after a year of use but to be honest they didn't need doing and no performance advantage was gained from doing so either. I just used the genuine G4 springs but there is a cheaper alternative that many use that is made in the UK and performs equally as well.

Regarding the rotator, I don't recall them being fitted to mine but I'm not intending to open up an engine to verify so would take Graeme's advice on that and contact the supplier.

Bearing in mind this is a sealed class when engines are supplied to a certain performance specification, you'd like to think that there is no adjustment that an owner could legally do, such as valve clearances, to gain an advantage.

I suppose the good news is that if you think a competitor's engines are performing better than yours then you can take advantage of the buy-back. Not sure if anyone has made use of that yet? I'm sure if it does, it'll be a cadet father rather than a prokarter.

Mark

Message Thread:

Exhaust valve rotor on Pro Extreme engine. by 'DrewHoward' (23 Apr 2015 @ 19:43)

Re: Exhaust valve rotor on Pro Extreme engine. by 'lard ass bob' (24 Apr 2015 @ 8:44)

Re: Exhaust valve rotor on Pro Extreme engine. by 'DrewHoward' (24 Apr 2015 @ 18:00)

Re: Exhaust valve rotor on Pro Extreme engine. by 'Mark 71' << You are here!

Re: Exhaust valve rotor on Pro Extreme engine. by 'DrewHoward' (26 Apr 2015 @ 18:55)

Re: Exhaust valve rotor on Pro Extreme engine. by 'Mark 71' (26 Apr 2015 @ 20:10)

Re: Exhaust valve rotor on Pro Extreme engine. by 'DrewHoward' (26 Apr 2015 @ 21:23)

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