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Author: Subject: Xflow head work for bike carb conversion
matto_89

posted on 17/12/12 at 08:10 PM Reply With Quote
Xflow head work for bike carb conversion

Hi All,

Have had the 7 that my old man and I built on the road since this summer, and we're converting the X-Flow from a twin choke weber to bike carbs over the winter. We rebuilt the bottom end before putting it in, but we've not touched the head. We've got a BCF2 cam in it. In terms of the head, a bit of research suggests larger exhaust valves and general work to improve the flow, and we'll also get it converted to run unleaded. Any further recommendations?

Thanks in advance,
Matt

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clairetoo

posted on 17/12/12 at 08:55 PM Reply With Quote
Simple recipe for good power is the biggest valves you can get (1 5/8 inlet / 1 3/8 exhausts) , then double valve springs and steel rocker posts for reliability .





Its cuz I is blond , innit

Claire xx

Will weld for food......

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puma931

posted on 18/12/12 at 08:45 AM Reply With Quote
Take a look at this link for details of my 1.3 xflow running bike carbs

http://www.locostbuilders.co.uk/viewthread.php?tid=174211

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sylva_phoenix

posted on 20/12/12 at 09:11 PM Reply With Quote
Depending upon how much lift your cam gives you, you may need to pocket the pistons for clearance.
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