Gran Turismo GT200 Big block - PHBH 30 Jetting Advice Please

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Bidsy
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Sun Feb 10, 2019 3:14 pm

Hi
Just built a Gran Turismo GT200 Big block engine and after some jetting recommendation please.
My set up is 30mm PHBH, BGM V4 clubman, 18/47 SX200 gearing.

Anybody with a similar setup?

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garry inglis
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Sun Feb 10, 2019 3:36 pm

145 main 55 pilot av266 an x7 second clip should get you started then check plug for fine tuning

Bidsy
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Sun Feb 10, 2019 10:00 pm

Is a 145 main a little bit rich

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garry inglis
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Mon Feb 11, 2019 9:04 am

It's a freshly built engine and you want it rich and for the first 500 miles you won't hit full throttle to use the main properly as I said it's a starting point as you put the miles on do plug checks but from what I've seen posted over the years with jetting for this kit they end up on 140/145 That's why you start rich

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Bidsy
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Mon Feb 11, 2019 10:42 am

Thanks Garry, better order so more jets then. Cheers

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