How to tell if hydraulic tappets are good?

[SmokinFast]

I'm in the process of putting my CB700 engine back together. I'm using parts from the original engine, a donor engine, and a cylinder head from eBay. I have a total of 46 tappets (I sold 2 of them to DirtyMrRogers).

I have looked over the tappets and am wondering which ones are good.

One is stuck down (short) and wont move. I assume its bad? Some others are very springy ( a few millimeters of travel). The majority have very little travel.

They are soaking in kerosene right now. Which ones should I use in the engine?

Thanks,
Brett

[ariwhiteboy]

If in doubt I would go ahead and replace them all, not sure exactly which ones your bike requires though.  I would imagine the cost of replacing them all would be well worth the headache saved if you had to tear into the motor 10,000mi down the road again. I found this video, it may not be of any help but then again it might.

[detdrbuzzard]

don't know about the nighthawks but the goldwings can be manually pumped up if removed from the engine. look in your shop manual and see if yours can be

[gammer]

The one that is stuck and short is no good. I had one of those once. The tappets that are springy need to be bled with the kerosene method. Use the ones that have little or no play...that's your best bet.

[SmokinFast]

The one that is stuck and short is no good. I had one of those once. The tappets that are springy need to be bled with the kerosene method. Use the ones that have little or no play...that's your best bet.

Thanks for the info. I'm glad most of them have little or no play. Its good to have lots of extra parts.

[gammer]

Its good to have lots of extra parts.

I couldn't agree with you more 

I constantly preach that if you want to keep an older bike around for a long time, you need lots of spare parts and/or a parts bike.