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drjbeam
 Post subject: su piston and needles
PostPosted: Fri Jul 25, 2014 8:19 pm 
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Can a run a fixed piston and needle in a su that had a biased piston and needle
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Mick
PostPosted: Fri Jul 25, 2014 8:30 pm 
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Location: Under the bonnet son!
I converted a pair of Twin 1.5's recently from swinging needles and waxstats.

You need to buy an adaptor bush to fix the needle. Only a couple of dollars each.

viewtopic.php?f=2&t=83695&hilit=twin+1.5

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All garage work involves equal measures of enthusiasm, ingenuity and a fair degree of irresponsibility.
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drjbeam
PostPosted: Fri Jul 25, 2014 9:57 pm 
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Cant i just drop in a fix needle piston with the fixed needle in it already

Im playing around with a hs2 1 1/4
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drmini in aust
PostPosted: Fri Jul 25, 2014 10:19 pm 
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Yes you can, but you should use the bell that came with that piston.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:
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simon k
PostPosted: Fri Jul 25, 2014 10:54 pm 
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just make a paste with some ajax and water and hone them into each other a bit.

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drjbeam
PostPosted: Sat Jul 26, 2014 6:15 pm 
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Ok thanks
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1071 S
PostPosted: Mon Jul 28, 2014 8:38 pm 
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Why would you risk messing up 2 carbs when you can get the correct needle mount for a few dollars?

Cheers, Ian
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