1973 914 progress, 2.0l engine/rear suspension upgrade/fixing what needs to be fixed |
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1973 914 progress, 2.0l engine/rear suspension upgrade/fixing what needs to be fixed |
'73-914kid |
Nov 1 2008, 07:54 PM
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#1
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Senior Member Group: Members Posts: 1,473 Joined: 1-November 08 From: Vista, CA Member No.: 9,714 Region Association: Southern California |
Follow me along as I venture into type 4 hell as a newbie to VW's!
This thread will show how a V8 guy does a 4 cylinder (IMG:style_emoticons/default/laugh.gif) Okay guys, pulled the engine out last weekend, and today project was disassembling it. I knew it had a knock, and it was super oily, but found out that it had gotten worse that I thought, and had actualy spun a bearing, with another connecting rod getting close to it. Damage report: -The crank is a little tweeked, and should be able to be ground to get rid of any evidence of the connecting rod slamming down upon the journal. -1 cylinder has been scored terribly with 1-2 mm scratches in it. I'm hoping that the KB oversized pistons are big enough to compensate for the scoring to be taken out (IMG:style_emoticons/default/confused24.gif) -lots of tiny bits of bearing EVERYWHERE! The good: -valve train is in good condition -cases have NO marring on them -cam looks good -connecting rods are perfect Other than that, it's just goint to be money to get new parts and take the crank in to be ground and possibly rebalanced and tweeked back to alignment. And now for some pictures....... (IMG:http://i260.photobucket.com/albums/ii8/perfectshot_12/1973%20Porsche%20914/Picture830.jpg) (IMG:http://i260.photobucket.com/albums/ii8/perfectshot_12/1973%20Porsche%20914/Picture832.jpg) (IMG:http://i260.photobucket.com/albums/ii8/perfectshot_12/1973%20Porsche%20914/Picture834.jpg) (IMG:http://i260.photobucket.com/albums/ii8/perfectshot_12/1973%20Porsche%20914/Picture835.jpg) And here's that god awful FI system..... (IMG:http://i260.photobucket.com/albums/ii8/perfectshot_12/1973%20Porsche%20914/Picture831.jpg) |
Jake Raby |
Nov 7 2008, 09:30 PM
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Engine Surgeon Group: Members Posts: 9,394 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
I'll bet you 50 bucks there is a crack in at least one of the chambers or exhaust ports in each head. If they haven't been found you haven't looked hard enough or you haven't inspected the heads at above room temperature where cracks really start to open up. Does your rebuilder include valve seats in that price? If not the heads aren't fully rebuilt !
200 for a used reground cam is not a good deal, maybe 50 bucks would be or maybe 75! I charge less than that for my new cams! IF the cam is reground but isn't re heat treated you can expect failures since the stock heat treat only penetrates about .020 into the cam blank. When you regrind the cam you also MUST use a stock reground lifter which also must be re heat treated and reground with the proper crown radii to match the lobe taper of the camshaft. I spent 2 years and over 20K bucks to create wear solutions for cams and lifers- this is THE most critical aspect of the TIV engine undoubtedly. 250.00 for opening those cylinders is also not a good deal, when I offered the service I did it for less than that, its only worth 180.00 at max. Does your machine shop have a torque plate to bore the cylinders under load? if not they'll destroy the cylinders as the dimensions will change under torque loads. Remember- trying to save a buck is the fastest way to spend 3. What good is doing this for under 3K if you have to spend another 2K to repair the mistakes that can be made if this is done at anything less than comprehensively? This post has been edited by Jake Raby: Nov 7 2008, 09:34 PM |
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