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Looking at getting a full set and GSF have quoted me £6 each for the valves for an ABY...thought they would be more like £13 as they are the sodium version not plain.
Anyone used the GSF ones recently?
Could buy a spare and cut it in 2 to check...
Carlos.
On the look out for less bits for my s2 saloon project. Now supporting myself by shooting for my food. www.airgunforum.co.uk
You could cut them open, there is a procedure in the workshop manual for disposing of them, something like cut them in two, drop into a bucket of water, and quickly retreat to a safe distance
91CQ20v - Gone to a new home
93UR-S4 - The Magic Carpet
94S2Bus - The Emerald Express
Sodium valves get rid of heat better, considering your going from a 2.2 to a 2.5 engine which will make more bang per buck I would say using non sodium valves is a bad idea.
^^^^^ yep got to agree whatever you do don't fit the GSF exh valves, you'll end up burning the seats in the head. If you want stock ones got several sets kicking about that have been swirl polished, or if you have a set they can be reconned providing the stems aren't worn.
The inconels are a nice upgrade too and flow the same as a swirl polished set but more expensive so it all comes down to your budget.
Swirl polished valves are basically reprofiled stock valves. If you look at the stock valves they are very uneven. By Swirl polishing you create a smooth profile which creates less turbulence and ultimately provides more flow. All aftermarket performance valves come swirl polished.
Picture of some half completed before refacing and cleaning.
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