aliveagain
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posted September 17, 2007 02:30 AM
piston clips
Any tips on installing piston pin clips?I have to get some new ones seeing how the old ones told me they weren't going to be reused by continuely flying all over the garage when trying to install.Sorry if this has been covered befor,my search function doesn't work.
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entropy
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posted September 17, 2007 05:53 AM
 Edited By: entropy on 17 Sep 2007 07:43
If the cases are split, 1st tip is to install the pistons on the rods before attaching to the crank. Makes mounting the clips easy holding the rod in a vice AND much more importantly allows you to put the pistons in the cyl block in 10 min using a couple of popsicle sticks rather than 3 hours and my full inventory of swear words.
To get the clips in: put one end in that lil hole in the groove in the wrist pin boss, then simply take a kinda wide screw driver and push on the clip near the top of the writ pin. The clip will slide down into its groove with a min of compression.
To describe this process is like trying to write directions of how to tie shoes. It is WAY simple, they just pop right in, but to explain it???
Never reuse them, exactly! 
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aliveagain
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posted September 17, 2007 08:56 AM
If you are installing the rod caps after the pistons and cylinder are installed,how do you measure rod bolt stretch?
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entropy
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posted September 17, 2007 09:37 AM
i measure rod bolt stretch when i set up the rods to measure rod bearing ID. Then when i assemble the rods on the crank i use the tq determined earlier.
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VincentHill
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posted September 17, 2007 12:14 PM
Not an easy thing to do! I use a small Needle Nose Plyers to hold 1 end of the Circlip! The other end I set in the Piston like Karl and the using my thumb hold the top of the clip while I pull up and push in the Clip. I made a special set of plyers where I rounded the ends and made them very smooth so I will not scratch up the piston when sometimes it goes in faster than planned! Also I keep control of the clip because your thumb is fairly strong and the clip will not fly away!
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slug
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posted September 17, 2007 03:33 PM
The only other thing I would do is if there is a notch in the piston above the clip groove, make sure that the one end of the clip is NEAR the notch, but make sure that the gap (between the ends of the clip) does not STRADDLE the notch. Otherwise removal is a swear-words & aluminum scratching event....
;P
   
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MadMike
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posted September 17, 2007 04:24 PM
for the first half or so of them, I just use my thumbs and compress them and they pop right in, but after about 5-6 of them my thumbs hurt worse then a virgin on prom night... and then I have to use a screwdriver like Karl says....
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VincentHill
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posted September 18, 2007 09:47 AM
quote:
The only other thing I would do is if there is a notch in the piston above the clip groove, make sure that the one end of the clip is NEAR the notch, but make sure that the gap (between the ends of the clip) does not STRADDLE the notch. Otherwise removal is a swear-words & aluminum scratching event....
;P
You have really told the truth there!! I even took one of my Sears and Roebuck Cotter pin removers and redesigned it to Push the end around past the Notch. and then get it out!
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capt10ed
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posted September 18, 2007 03:55 PM
I am surprised that no one mentioned that it is a GOOD idea to put a towel or something below the piston to prevent the clip from falling into the crankcase when the clip refuses to enter the grove.
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entropy
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posted September 19, 2007 03:28 AM
quote:
I am surprised that no one mentioned that it is a GOOD idea to put a towel or something below the piston to prevent the clip from falling into the crankcase when the clip refuses to enter the grove.
REAL good point!
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VincentHill
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posted September 19, 2007 08:12 AM
quote:
I am surprised that no one mentioned that it is a GOOD idea to put a towel or something below the piston to prevent the clip from falling into the crankcase when the clip refuses to enter the grove.
I Guess we have all become too proficient with small telescoping magnets! 
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entropy
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posted September 19, 2007 08:54 AM
I don't lose clips into the cases cause I f the block has to come off, i'd rather split the cases check the bearings, trans, etc, put the pistons in the block, THEN assemble the crank & cases. I'm lazy
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aliveagain
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posted September 23, 2007 04:36 AM
I'll have to try that next time entropy. I did notice the stock clips are a lot easier to go on than the ones from JE.
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VincentHill
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posted September 23, 2007 05:00 AM
quote:
I'll have to try that next time entropy. I did notice the stock clips are a lot easier to go on than the ones from JE.
I think the ones used in the Aftermarket are less expensive than Factory and Hence are stronger / harder to bend because they have less memory/Spring! You can Bend the JE or CP and they will retain the new shape but do the same to the Stock and they rill return to the original size. On my build I am into right now, I plan to carefully measure the thickness of them and If possible use the Factory original! My thought is, that the after market are THICKER and will not work the same!
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