Should I or Shouldn't I...pistons and cylinders?, Can of worms? |
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Should I or Shouldn't I...pistons and cylinders?, Can of worms? |
computers4kids |
Mar 17 2008, 10:51 PM
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#1
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Love these little cars! Group: Members Posts: 2,443 Joined: 11-June 05 From: Port Townsend, WA Member No.: 4,253 Region Association: None |
I pulled apart my spare 75 2ltr down to the block (didn't split the case) that I'm planning on putting in my 75 project car. I also pulled the heads. My intentions was just to clean it up, do a visual inspection on the heads and re-seal the motor. I was going to take the heads down to our local machine shop to have them cleaned and if necessary a valve job.
I'm looking for some advice on whether I should remove the pistons, have the cylinders honed and new rings installed? Is this worth doing on these type of motors...or do most just buy a cylinder and piston kit? Looking at all the kits available make me wonder whether to go with the stock 94s or a big bore kit. I see Jake sells a stock Mahle kit for $284 and the big bore kits are between 3 and 4 hundred elsewhere. I have both stock injection and weber 40s...probably go with carbs. I don't want to split the case to replace the cam. So what do you think? (you can tell from my questions, I'm not much of a mechanic...but I like doing things for myself) |
VaccaRabite |
Mar 18 2008, 10:07 AM
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#2
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En Garde! Group: Admin Posts: 13,549 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
Are the cylinders off the block?
Once you pull the cylinders, you pretty much have to pull the pistons, unless you have a more clever way then I do to compress the rings to get the jugs back on. Where you getting poor leakdown from worn rings? its a can of worms. A chain reaction. Pull the cylinder, and suddenly you find a reason to pull everything else apart too. Ask me how I know... Zach |
Cap'n Krusty |
Mar 18 2008, 10:19 AM
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#3
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Cap'n Krusty Group: Members Posts: 10,794 Joined: 24-June 04 From: Santa Maria, CA Member No.: 2,246 Region Association: Central California |
Are the cylinders off the block? Once you pull the cylinders, you pretty much have to pull the pistons, unless you have a more clever way then I do to compress the rings to get the jugs back on. Where you getting poor leakdown from worn rings? its a can of worms. A chain reaction. Pull the cylinder, and suddenly you find a reason to pull everything else apart too. Ask me how I know... Zach What, you don't have a ring compressor? BTW, if you replace the pistons, you MUST rebuild the rods and have the pins fit. The Cap'n |
VaccaRabite |
Mar 18 2008, 11:55 AM
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#4
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En Garde! Group: Admin Posts: 13,549 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
What, you don't have a ring compressor? BTW, if you replace the pistons, you MUST rebuild the rods and have the pins fit. The Cap'n What kind of ring compressor are you using? The kinds that I have seen (and the kind that I own) get trapped between the cylinder and the block if you don't remove the pistons. Show me where to buy something better, and i would be happy too. Zach |
Cap'n Krusty |
Mar 18 2008, 02:08 PM
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#5
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Cap'n Krusty Group: Members Posts: 10,794 Joined: 24-June 04 From: Santa Maria, CA Member No.: 2,246 Region Association: Central California |
What, you don't have a ring compressor? BTW, if you replace the pistons, you MUST rebuild the rods and have the pins fit. The Cap'n What kind of ring compressor are you using? The kinds that I have seen (and the kind that I own) get trapped between the cylinder and the block if you don't remove the pistons. Show me where to buy something better, and i would be happy too. Zach OK. Here's the one I use: http://www.toolsource.com/piston-ring-comp...a1k5shlnebvkfg0 Here's an inexpensive one: http://www.toolsource.com/piston-ring-comp...or-p-69800.html The Cap'n |
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