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can you remove standard velocity stacks?

Posted: Sat Aug 11, 2012 10:50 pm
by banner001
who ever last (not me) removed the metal plate that holds your black plastic velocity stacks has replaced it in such a way that 3 of the 4 stacks has buckled inwards, i have a picture here:-
Image

you can see that the one on the right has buckled...so i am wondering if these can be replaced, they seem like really hard plastic so is it possible to remove and replace them? microfiche lists them as a seperate item...but im not sure if it is possible to replace them without damaging them as they are fairly robust, maybe a bit of boiling water to soften them...but then does this defeat my purpose?

i have also seen that that sealing ring is knackered, will order :D have flipped it over for the time being.

Re: can you remove standard velocity stacks?

Posted: Mon Aug 13, 2012 1:09 pm
by banner001
anyone?

Re: can you remove standard velocity stacks?

Posted: Mon Aug 13, 2012 4:17 pm
by Tirpitz
You should be able to tell yourself whether you can physically replace them (i.e. they disassemble) and one call to Cradleys will tell you whether they are available to buy. If the answer to either of those questions is a no then it's game over. Economically it may be cheaper to buy a second hand set of carbs.

Re: can you remove standard velocity stacks?

Posted: Mon Aug 13, 2012 6:34 pm
by banner001
they are available on their own, but as noone looks to have ever removed them it might need to be an ebay buy, will email sellers to check them for me...

Re: can you remove standard velocity stacks?

Posted: Mon Aug 20, 2012 6:15 pm
by zimm
pop them in the oven @ about 50-80 degrees C, they'll soften and come out easy (dont burn yourself !) new ones are more flexible, they just harden up with age/fuel exposure/heat cycles..

If you're lucky you can warm them up, pop them out, manipulate them till they arent all bent up then pop them onto the carbs individually (ie without the plate) and leave them to cool.. they'll harden up again but "remoulded" to fit the carbs.. then warm them up again and gently re-fit into the plate minimising distortion to the lip.. then maybe some further warming and ensuring they are all looking ok re-fit the plate to the carbs carefully and leave to cool. With luck they'll all slip on and be fine..

top tip : to avoid this happening only separate the plate and the carbs when they are cool.. if you have to do it warm have a set of carbs on the bench to pop them straight onto.

Re: can you remove standard velocity stacks?

Posted: Mon Aug 20, 2012 9:45 pm
by banner001
new ones are ~£14 from cradleys, so thats £42...can probably buy full carbs for that...will ahve to see what breakers will offer me, but good to know that they can be replaced. TBH once they are replaced they can stay on for cleaning purposes, no real need to remove them, unless they are proper full of cack!