The age old Cossie Spark Plug debate

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20-07-2014, 10:01 PM

#41

Stu @ M Developments

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Quote:

Originally Posted by Jay,

Everyone to there own run them in a 620 atw v8 ls1 engine for god knows how long as recommended by the builder never had a issue and run them in cossies fior years with no issue or a 071c but heard of loads of the denso's ends falling out melting ect

See my earlier post about incorrect fitment. The centres only break due to incorrect fitment.

Ps, a 620bhp ATW LS1's spark plugs are under considerably less stress than a YB on greys and a T34.

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20-07-2014, 10:25 PM

#42

Jay,

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Yes i understand this Stu but the 59's are getting hard to get hold of so we tried the ik plugs and didnt last a full day on 103 ron gaped correctly bung it on the champs and its a good as gold Ric Wood who built it swears by them in the older ls engines and with the fuel type and regarding cossies again never had a issue with 59's and if no stock 071c I have never had a issue with either

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24-07-2014, 05:31 PM

#43

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Forgot the name/code of them but the 4x4 platinum plug served me well stg1 . switched to 071's and stuck with them as seemed no difference other than cost.

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24-07-2014, 09:36 PM

#44

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25-07-2014, 10:14 AM

#45

Rod-Tarry

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Quote:

Originally Posted by Jay,

Aint the ik plugs Jay if you use the correct grade for the application with a proper ignition system. Have done a whole day on 109 doing Topspeed runs with no probs swap to pump then drive home. I have a CDI/4 coils with a 16v accuvolt.