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Ok, here's what's up. The spare engine that came with my 260 has almost no compression, but the engine in the car now has great compression. About 175-185 across the board, most being 180. The head on the spare engine looks brand new! Even have a performance cam, springs, etc. I want to put the good head on the spare engine on the good short block in the car now. So when I get ready to put the good head on the car, what do I use to keep the timing chain from slipping. I'd really hate to remove all the stuff to put the tensioner back in. I saw one design for a wood tool, but it didn't give the measurments for where the hole goes... If anyone knows where I can get one, or how to make a good tool (that would be even better) give a shout out. Thanks!
 

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get a thick screw driver..stick the handle down in there and VOLIA! steves280Z did that to my engine and it works great!!!
 

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A quick and easy way is to use a handle from a screw driver that is about 1 1/2" wide and shove the handle end into the space between the chains. Try to fix a string to the end to retrieve it out. I don't know the specs to make one out of wood. I just have the proper tool. Hope this was some help.

Dave
 

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You want something that will allow you to still turn the crank, the "wedge" is stupid IMHO and is too easy for it to slip and you're screwed. I use a screwdriver put handle end down between the chain between the tensioner and the other guide rail. It should be a fairly snug fit and make sure it goes all the way down to the crank sprocket. You can either put something like a string on it, or use long needle nose pliers to get it back out. This way you can hold the chaain up and turn the crank if you need to.
 

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On the wood chain stop, you can put the finger hole on the wide end about 3/4" from the edge. I wrapped some thick bendable wire through my hole so I can get a better grip (and two hands) on it when I try to remove it.

Maybe the reason the 260 motor has bad compression is because of bent valves, or other valvetrain problems. Check it out, or have it checked out thoroughly before using it.
 

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Easy test for valves:

Make sure the valve you want to check is closed (rocker has clearance) and the pour some mineral spirits into the port and see if it leaks. A tiny seep isn't a big deal, it's obvious if the valve is the compression loss.
 

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steves280: that's a good idea! I never thought of that one.

Dave
 
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