Author Topic: Cylinder Stud Too Pitted?  (Read 1960 times)

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neworiginal

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Cylinder Stud Too Pitted?
« on: April 02, 2019, 07:17:11 PM »
Does this look too far gone for use? I am hoping they work but would hate to cut a simple corner if I should replace the cylinder studs. Of course would have to source some new ones.
1979 Invader 440, 1980 Invader 340, 1985 Yamaha XLV, 1980 Ski-Doo Citation SS

neworiginal

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Re: Cylinder Stud Too Pitted?
« Reply #1 on: April 03, 2019, 07:47:35 AM »
Was able to find the part number but no luck finding replacements. Part No 92004-3002
1979 Invader 440, 1980 Invader 340, 1985 Yamaha XLV, 1980 Ski-Doo Citation SS

mswyka

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Re: Cylinder Stud Too Pitted?
« Reply #2 on: April 03, 2019, 07:53:41 AM »
I would not consider them to be too bad to reuse.
Intruders:  1978, 1979, 1981 Custom (Pink)
Invaders:   1980 440
Projects:    1981 Invader 440

neworiginal

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Re: Cylinder Stud Too Pitted?
« Reply #3 on: April 03, 2019, 08:39:13 AM »
Thanks, I admit I was hoping for that feedback.
1979 Invader 440, 1980 Invader 340, 1985 Yamaha XLV, 1980 Ski-Doo Citation SS

rminier

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Re: Cylinder Stud Too Pitted?
« Reply #4 on: April 03, 2019, 04:04:51 PM »
 I agree with mswyka those don't look too bad.
I would shine them up with maybe a fine wire brush in a drill, particularly on the threaded area.
When you go to torque down the cylinder head nuts at final assembly, you will want those threads to be cleaned up to get a true torque reading.
75 SnoJet Astro SS, 79 Kawasaki Invader 440 (two of them), 81 Scorpion Sidewinder, 82 Blizzard 9500, 83 Yamaha Vmax 540, 97 MXZ 670....and holding...for now.