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-   -   nackerd cylinder head (free ?) (http://forums.sv650.org/showthread.php?t=158420)

barwel1992 07-10-10 01:08 AM

nackerd cylinder head (free ?)
 
any one got a nackerd head off any kind but preferably an sv head

i want to have a go at porting/flowing a head, as i have to do one at collage but we dont have enough time to spend perfecting it so wanted to do a bit at home.

any one willing to donate a head thats shot, not wanted or other wise ?

will pay P&P as long as its not to much

:smt102

yorkie_chris 07-10-10 09:19 AM

Re: nackerd cylinder head (free ?)
 
Sure.. postage might be a couple of quid though as they're pretty heavy

barwel1992 07-10-10 10:59 AM

Re: nackerd cylinder head (free ?)
 
what you got then YC ? :)

yorkie_chris 07-10-10 11:12 AM

Re: nackerd cylinder head (free ?)
 
A front head from curvy that a collet jumped out of... the valve didn't drop so it's not FUBAR but I wouldn't want to use it... be fine just for looking how far you can go on ports without breaking into waterways or whatever. As far as I know they didn't make massive changes to 2gen until they went to twin spark

barwel1992 07-10-10 11:15 AM

Re: nackerd cylinder head (free ?)
 
cool, if you could find out how much P&P is ill have it :D

yorkie_chris 07-10-10 11:21 AM

Re: nackerd cylinder head (free ?)
 
P.S back in day when I was playing with considerable vibration and harshness engine we found taking too much out of ports just made it peaky, got lots more torque with just smoothing rather than a massive port. Actually made more power with sport cam too rather than the mad one kent (iirc) made.

I don't think you can do it just on flowbench for best results... you need lots of dyno time. I could use CFD and get lovely smooth flow everywhere... and it would probably run like bag of crap... big trade offs between flow, mixing, velocity etc

barwel1992 07-10-10 11:30 AM

Re: nackerd cylinder head (free ?)
 
ok cheers :) we will be going through all of this soon on one of the cars we are working on as a few of them have to have the head's replaced, as they have a shelf life on race cars (most are post 95 cars), and the cars are going to be run(tracked) again this year for the first time in about 10 years


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