Edited by benspickup2011, 09 February 2011 - 07:19 PM.

Porting And Polishing Cylinder Heads?
#1
Posted 09 February 2011 - 07:18 PM
#2
Posted 09 February 2011 - 07:48 PM
I'd suggest picking up David Vizard's How to Tune the A-Series engine and giving a good look to the cylinder head chapters. Much you will learn from them.
#3
Posted 09 February 2011 - 07:55 PM
However polishing the chambers is worthwhile as it presents a smaller surface area for the heat to escape, the heat which is a form of energy is better converted in to Potential / Kinetic energy to drive your
pistons down

However does it outway the benefits of going down the pub ?
Edited by mra-minis.co.uk, 09 February 2011 - 07:56 PM.
#4
Posted 09 February 2011 - 09:10 PM
#5
Posted 09 February 2011 - 10:06 PM
#6
Posted 09 February 2011 - 10:26 PM

Don't take the chance with your health make sure you have the correct mask and DOn't work in a confined space.
#7
Posted 09 February 2011 - 10:45 PM
Urrgh, carbon itself is NOT carcinogenic, otherwise everything (nearly) we touch would be such, think about it CO2 a form of carbon is a natural product of the air we breathe and an output from respiration.Spot on info from above, the dust, just in case you want to run the risk and "take a chance" will have carbon which I am sure we don't need to tell you is a carciogenic ...... cancer bearing by product
Don't take the chance with your health make sure you have the correct mask and DOn't work in a confined space.
Just mentioned that as to not miss lead people (look at the top of the page, bit in that pinky colour) but i do realise it is off topic
Edited by liirge, 09 February 2011 - 11:01 PM.
#8
Posted 09 February 2011 - 11:10 PM

Ok so please enlighten us with your knowledge

#9
Posted 09 February 2011 - 11:14 PM
Edited by liirge, 09 February 2011 - 11:15 PM.
#10
Posted 09 February 2011 - 11:18 PM
#11
Posted 09 February 2011 - 11:18 PM
Edited by liirge, 09 February 2011 - 11:19 PM.
#12
Posted 09 February 2011 - 11:23 PM
It's a general case that the first bit of work you do on a standard head will make a big difference, but once the main items are sorted - the smoothing out of the 'short-side radius', removal of the valve-guide boss intrusions, de-masking the inlet and exhaust valves and cleaning up the casting steps around the valve seats - it's a lot more work to get a further small improvement.
#13
Posted 10 February 2011 - 12:23 AM
#14
Posted 10 February 2011 - 10:46 AM
#15
Posted 10 February 2011 - 11:06 AM
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