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P140 alternative possibly a bad idea?
Instead of buying the p140 tool to hold the barrels to case during cylinder installation, I made my own. They were just a simple steel spacer from lowes and a head stud nut. I only hand tightened them with no major torque applied. Later when I removed them I noticed they etched a little indentation into the top of the cylinder.
So my major concern is do I need to get heads machined down now or will they be fine due to the cylinder head gaskets keeping the seal? The indentations weren't major, but deep enough that your fingernail will catch them. Matt
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85 (early) 944 78 sc targa "The fool who wades in doubt will float like concrete" |
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This is one of those times where a pic may be worth something. I'd not expect head gaskets to compensate for a gouge you can feel-that is not what they are designed to do. But, then again, others may have different thoughts.
I used copper pipe-nice and soft.
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Ed Hughes 2015 981 Cayman GTS 6 speed,Racing Yellow Past:1984 911 Targa (Ruby), 1995 993C2 (Sapphire), 1991 928S4 |
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3.4 Bigger is better
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Agree with Ed on pictures. I used the 1/2 sockets as they are exactly the right size. A cheap closeout set from Target worked well.
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Michael 88 911 Diamond Blue CE Carrera 3.4 HC3.4 member 2020 Honda Passport |
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3/8 chrome plated/brass plumbing supply tubing, cut to size. Worked well for me.
And did not touch the sensitive part of the cylinder. Mike.
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Restoring/Rebuilding Yellow Canary '79 911SC Suspected track car |
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![]() ![]() As you can see the indentation is on the outer ring. I think it would be fine, but i wanted to check with everyone else.
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85 (early) 944 78 sc targa "The fool who wades in doubt will float like concrete" |
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I'd say that you have nothing to worry about.
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Preston Brown Street: 2009 911 Carrera S Coupe | 2015 Cayenne S | 1995 Audi ÜrS6 (unicorn) 1965 356 C Coupe | 2010 F250 (support vehicle) Race: 1994 964 GT2/1 | Various 944s | 2016 Superlite SLC | 2007 997 Carrera |
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Thanks for the reassurance Preston. I also noticed what appears to be corrosion accumulating at the bottom of the lip where the gasket rests. I'm wondering if it is from extra fuel pooling up after the motor is turned off or possibly flooded. Has anyone else noticed this before?
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85 (early) 944 78 sc targa "The fool who wades in doubt will float like concrete" |
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Also does anyone know the spark plug thread size and pitch? I want to chase them before putting the heads back on.
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85 (early) 944 78 sc targa "The fool who wades in doubt will float like concrete" |
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