Hello folks
i have a 1640 xflow in my mk2
has as a standard gt head 234 cam 1300 pistons
currently runs on a single 40 dellorto
it runs well but wondering would I gain anything by going up to 45?
At at the moment it feels a bit restricted in the midrange it didn't before I rebored and rebuilt it
Im guessing it needs to be retuned on the rolling road so before I do I was wondering if it's worth trying a 45
Also is it worth having the head ported
I can run twin 40s for some events but on road rally's I need to use a single carb
so any gains to be had?
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