thunderace
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| posted on 17/11/07 at 04:13 PM |
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KCBCF3 xflow cam help
can i run this cam in my 1600cc xfloe engine if i have just moved my timing 8deg or is there something else i need to do ?
do i need to buy this
(016"IN/.016"EX CLEARANCE KIT )
i have just rebuit my engine with new evrything and dont want to brake it by making a big mistake.
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thunderace
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| posted on 17/11/07 at 04:22 PM |
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From: 02GF74
To: thunderace
Sent: 9/11/07 at 06:16 PM
Message: yes indeedy.
I got the burton list of cams and there is notes saying which cams need piston mods.
Looking at the lift, anyting over 10 mm seems to be the case.
quote:
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bcf2 doesn't need cut outs but bcf3 does
"i dont understand what you mean by that"(cut outs in the pistons??)
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the pistons come with cut outs??
i have bigger cut outs to take max size valves.think there 41.3mm inlets with a 34mm ex
it took me a week to port and polish it .
do you need to make them deeper to avoide the valves bounsing and hitting them or just use heavy duty spring i dont understand ??
[Edited on 17/11/07 by thunderace]
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MikeRJ
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| posted on 17/11/07 at 05:15 PM |
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The BCF3 cam does not require extra piston cut outs. This was confirmed by Dave Walker in another thread recently, and I have a BCF3 in a 1600 xflow
running standard unmodified pistons.
The Kent catalogue states that it is the "maximum" cam that will fit without piston mods.
http://www.kentcams.com/Downloads/Files/catalogue_medRes.pdf
You should use the valve springs that come with the cam kit, standard springs will almost certainly allow valve float/bounce within the usable RPM
range.
[Edited on 17/11/07 by MikeRJ]
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stretch
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| posted on 21/11/07 at 11:16 AM |
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i had to make the cutouts on my pistons a slight bit deeper where the intake valve goes
because the fitted an adjustable cam gear and changed the cam timing a bit to give a little extra
then its needed to make the cutout a bit deeper, but was only .5mm if i recall correctly
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