installing rings!, I found a crack in the piston wall. |
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installing rings!, I found a crack in the piston wall. |
JOE M |
Jul 24 2009, 11:43 AM
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#21
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Member Group: Members Posts: 293 Joined: 27-August 07 From: N.H Member No.: 8,042 Region Association: None |
I think I know the answer but hopefully I am wrong. I was installing new rings and found that 1 piston had a chunk missing from the wall (see pic). Is there any hope for this piston or is it dead.My guess is that it is trash but can I replace a single piston or do I have to replace all 4?
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jcd914 |
Jul 24 2009, 02:42 PM
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#22
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Advanced Member Group: Members Posts: 2,081 Joined: 7-February 08 From: Sacramento, CA Member No.: 8,684 Region Association: Northern California |
Have you measured the piston to cylinder clearance?
Do you know which 1.7 pistons you have? You could post a WTB ad with the info you have and maybe someone has a piston to match. I have a set of 1.7 P&C's I'll never use but 3 of the 4 are still on the engine and it is VW 411/412 engine. I have no clue how those P&Cs would compare to a set for a 914. Of my 3 914s the only one without a cracked windshield is the one without a windshield. (IMG:style_emoticons/default/sad.gif) Jim |
JOE M |
Jul 24 2009, 02:57 PM
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#23
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Member Group: Members Posts: 293 Joined: 27-August 07 From: N.H Member No.: 8,042 Region Association: None |
Have you measured the piston to cylinder clearance? Do you know which 1.7 pistons you have? You could post a WTB ad with the info you have and maybe someone has a piston to match. I have a set of 1.7 P&C's I'll never use but 3 of the 4 are still on the engine and it is VW 411/412 engine. I have no clue how those P&Cs would compare to a set for a 914. Of my 3 914s the only one without a cracked windshield is the one without a windshield. (IMG:style_emoticons/default/sad.gif) Jim So cracked windshields are common???? I did not measure the distance because they were already shimed.I probably should remeasure and shim if needed.To be honest the only in depth thing I know about this engine is that it a 1.7. It had real low compression when I bought it. So far I bought new carbs and now rings. |
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