compression tester adapter C90/CG

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Alan CF
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compression tester adapter C90/CG

Post by Alan CF » Sat Jul 01, 2017 8:24 am

Got one of these the other day, Fits both bikes,
I thought the 10mm part might stick through and let the piston give it a clout, But its no where near, :D

Bargain at £5.99 free post.

http://www.ebay.co.uk/itm/Draper-10mm-1 ... 2241389069?

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ally
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Rides:: dr750, mz skorpion traveller, v90, v75a, c90-g, innova fi, fj1200
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Re: compression tester adapter C90/CG

Post by ally » Sat Jul 01, 2017 1:08 pm

thanks :)

loadedtoad
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Re: compression tester adapter C90/CG

Post by loadedtoad » Sat Jul 01, 2017 10:24 pm

Does the extra protrusion into the combustion chamber make the compression reading higher as its reducing the compression area and therefore increasing the compression ratio :)

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Alan CF
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Rides:: MOT 18/6/18 TAX 31/5/18 INS 10/8/17
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Re: compression tester adapter C90/CG

Post by Alan CF » Sun Jul 02, 2017 10:27 am

loadedtoad wrote:
Sat Jul 01, 2017 10:24 pm
Does the extra protrusion into the combustion chamber make the compression reading higher as its reducing the compression area and therefore increasing the compression ratio :)
Good Question,
When i screwed it into the CG head the extension sat about flush with the threads when screwed in, All i can think of is that the CG spark plugs have a longer reach thread, So they made this shorter and the 10mm extension compensates.

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