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Spark plug hole thread chaser.
- daveo
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While the condition of the threads are all very-good, will I create problems by running a thread chaser through all four holes, possibly loosening residue or some metal from them?
I would take care to lower the pistons, and make sure the valves are closed enough for clearance.
1982 KZ1100-A2
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- koolaid_kid
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From now on, use a bit of anti-seize on the threads of each plug. Don't go overboard, just a small dab will do.
1983 GPz 750
810 Wiseco, Kerker, K&N, DynoJet S3, Accel, Progressive, etc.
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- 650ed
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1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
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- daveo
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The spugs remove easily when the head is warm, but are tight when it is cold, even with anti-seize lube on the threads.
With that in mind, I may be smart to spin the chaser through while its warm, and again when it has cooled off some.
This head came from a donor low-mile 82 KZ1100-A2 last year in the spring. All threads are original and strong, with no repairs. The cam-cap threads take 12 ft. pounds of torque very well.
1982 KZ1100-A2
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- daveo
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I'm using NGK BR8EIX platinum plugs that have washers, but they are pretty well flattened-out from repeated tightening.
The book calls for 20 ft. lbs. torque for the plugs...so that they be.
1982 KZ1100-A2
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- koolaid_kid
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1983 GPz 750
810 Wiseco, Kerker, K&N, DynoJet S3, Accel, Progressive, etc.
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- daveo
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Cost-wise, ebay has saved me a lot of money through the years.
1982 KZ1100-A2
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- koolaid_kid
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1983 GPz 750
810 Wiseco, Kerker, K&N, DynoJet S3, Accel, Progressive, etc.
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- daveo
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I will probably wear them out (from constant inspection) by next year, and thanks for your thoughtful advice.
1982 KZ1100-A2
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- trianglelaguna
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- New and improved - extra strength
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1976 KZ900
2003 ZX12R
2007 FZ1000
2004 ninja 250R for wife
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- trianglelaguna
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1976 KZ900
2003 ZX12R
2007 FZ1000
2004 ninja 250R for wife
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- koolaid_kid
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Correct. The anti-seize is to prevent this happening in the future, nothing more.trianglelaguna wrote: if the threads are that tight cold a dn a dab of thread anti seize does nothing..chase ....but try for tdc imo when chasing...it would bend one with any tiny touch on the valve
This should not have happened in the first place, so the thing to do is correct what ever issues are present and then prevent them in the future, which is what the anti-seize is for.
daveo, when you start to do this, go in a few threads, pull the chaser out, clean it, re-grease, and go a few more threads down. TDC is not so important as long as you do not go into the combustion chamber itself, which will only occur at the very last of the cleaning. You can judge this by comparing the chase threads with the plug threads. Just saying.
1983 GPz 750
810 Wiseco, Kerker, K&N, DynoJet S3, Accel, Progressive, etc.
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