

| Subject: | Re: compressing piston rings in engine |
| From: | Derek Burgess |
| Date: | Mon, 9 Dec 2013 14:37:40 -0500 |
Tom, Im not suggesting you remove the rods. I know some people say to, but to me, then you have a bearing job better left to when you split the case! Rods still attached. Remove the circlip's that hold the wrist pins. Then remove the wrist pins using a tool like this https://www.dropbox.com/s/nzp43gekwjteg5y/photo.JPG Ignore the fact that the piston/rod are out of the case in this photo, it can be done with them in the case. I've seen it called a piston pin puller, the Bentley actually shows a special VW tool to use, but I have never seen one in the wild- I made the one in my photo from Home Depot parts- It works, I have used it twice now. -Derek 1990 GL Automatic "Vikki" On Mon, Dec 9, 2013 at 2:12 PM, Tom Carchrae <tom@carchrae.net> wrote: > Thanks Derek, that option has been glaring at me and it is looking ever > more appealing. This route looks pretty straightforward too: > http://www.youtube.com/watch?v=pSBQTkPh_SQ (until you drop the nut) > > Tom > > > > > On Mon, Dec 9, 2013 at 10:48 AM, Derek Burgess <ddb.graphic@gmail.com>wrote: > >> I know this isn't a direct answer to your question: but it's really alot >> easier to pull the pistons, get them into the cylinders on a bench and >> then >> install the two together. I think pulling circlip's and piston pins much >> easier than trying to push a cylinder down over a piston still attached to >> the rod. Use rags to clog the cylinder bores, do not want circlips flying >> down into the block.. "would not be funny" -Ben >> >> >> -Derek >> 1990 GL Automatic "Vikki" >> >> >> On Mon, Dec 9, 2013 at 1:33 PM, Tom Carchrae <tom@carchrae.net> wrote: >> >> > Dear List, >> > >> > I am trying to get the rings compressed (with pistons attached to rods >> and >> > engine in the car). I am currently in practice mode - using the old >> rings >> > but I am finding, as warned, this is bloody tricky. Not to mention it >> is >> > getting awfully cold outside - my hands nearly froze to the cylinders >> > yesterday (I am now storing them inside). >> > >> > Some observations: >> > >> > 1) I have a standard blue steel compressor: http://goo.gl/Eapbve (which >> > has now been cut down as slim (width) as possible, thereby removing a >> strip >> > of steel that I could also use with a hose clamp) and it very nearly >> fits >> > (or maybe not) in the tight space between the water jacket and the >> sleeve. >> > If you've used one in this scenario, where did you locate the >> compressor >> > ratchet mechanism when doing the last cylinder: top, bottom, side? The >> > bottom seems to nearly work. >> > >> > 2) Even if I were to get the standard compressor to fit, how on earth >> will >> > I remove it? I would need to unwind it all the way and slide it out I >> > guess? Or unwind it so it fits around the cylinder? I can see being >> able >> > to do that on the first cylinder, but that seems practically impossible >> on >> > the second one when there is no room. If you've used the compressor (hi >> > Alistair!), which route did you go? >> > >> > 3) It seems that the VW specific ring tool ( http://goo.gl/RdkUEp ) >> would >> > be much easier to remove (but looks like fun job to get it to compress). >> > Alas, while it ranges from $5-10, it seems to be out of stock in Canada >> > and about $30-40 to ship. Bah. I'm considering making one from the >> steel >> > I cut from the compressor. >> > >> > 4) I really liked the zip tie then cut idea from Angus Gordon. I have a >> > hose clamp, but tightening it would seem quite difficult. I presume >> that >> > the way you would tighten a hose clamp is by going in the same access >> hole >> > (water pump/pipes holes) when you are doing the last cylinder? >> > >> > 5) It seems the sensible order to attach cylinders would be first the >> two >> > on the rear/flywheel side and then follow by front/pulley side. >> > >> > I am considering dropping the engine, if only so I can (a) get better >> > access, (b) haul the engine inside to be warmer or god forbid (c) admit >> > defeat and take it to a shop who will roll eyes, cluck, and then likely >> > punish me for my arrogance. I guess most VW mechanics are used to some >> of >> > that. >> > >> > As always, thanks in advance for any illumination. >> > >> > Tom >> > >> > >
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