I finally began tearing down the motor i pulled from my '73 GTV 2000. The car was a one owner, 55k mile car which so far has been in surprisingly good shape. No rusted bolts, no cracked rubber parts, very limited rust. The motor showed compression in the 170-180's, good oil pressure and the valves were all within spec (.013"-.017" with the larger numbers on the exhaust side). Timing looked to be nearly spot on but not exact (see pics)
So why I am i tearing it down? Cause it's on a stand. And I want to. And I want to know what's going on in there and re-gasket the whole thing and be sure I know what I'm dealing with before I put it back into the freshly sprayed engine bay.
I'm going to post my progress here, along with a few questions. So far I've pulled the head off (no prob after a few whacks with a mallet), removed the oil pan as well as the accessories, except the spica pump and intake manifold.
Questions so far...
1. Do the #2&3 injectors need to come out to remove the intake manifold? They are in there GOOD and I don't love the idea of messing with them, but I can't see a way to get the intake manifold off otherwise...
2. The only concerning marks I've found so far is some gauging on the inside front of the valve cover that must have been causes by the chain. What could have lead to this? (see pic).
3. What is your degreasing procedure? I have a bottle of marine clean, which I soaked the valve cover in. It worked decently, but not amazingly well. I suppose I could increase the concentration. What do you all do for parts that can't be soaked (ie block and head)? I also have a bottle of "greased lightening" from the autozone. Strangely, it says "not for use on aluminium or aluminium alloys". Is aluminium sensative to typical degreasers?
4. I'm trying to decide if I should replace the piston rings. The liners look super clean and as I said the compression was great with no oil burning. In short, they don't 'need' replacing. But then again, neither did any of the gaskets. Is it prudent for me to replace them anyway? Anything to watch out for?
5. Do my pistons show a 'normal' amount of carbon deposits? Is it worth cleaning these off if I do take them out for new rings? How does one clean piston crowns?
thanks all
So why I am i tearing it down? Cause it's on a stand. And I want to. And I want to know what's going on in there and re-gasket the whole thing and be sure I know what I'm dealing with before I put it back into the freshly sprayed engine bay.
I'm going to post my progress here, along with a few questions. So far I've pulled the head off (no prob after a few whacks with a mallet), removed the oil pan as well as the accessories, except the spica pump and intake manifold.
Questions so far...
1. Do the #2&3 injectors need to come out to remove the intake manifold? They are in there GOOD and I don't love the idea of messing with them, but I can't see a way to get the intake manifold off otherwise...
2. The only concerning marks I've found so far is some gauging on the inside front of the valve cover that must have been causes by the chain. What could have lead to this? (see pic).
3. What is your degreasing procedure? I have a bottle of marine clean, which I soaked the valve cover in. It worked decently, but not amazingly well. I suppose I could increase the concentration. What do you all do for parts that can't be soaked (ie block and head)? I also have a bottle of "greased lightening" from the autozone. Strangely, it says "not for use on aluminium or aluminium alloys". Is aluminium sensative to typical degreasers?
4. I'm trying to decide if I should replace the piston rings. The liners look super clean and as I said the compression was great with no oil burning. In short, they don't 'need' replacing. But then again, neither did any of the gaskets. Is it prudent for me to replace them anyway? Anything to watch out for?
5. Do my pistons show a 'normal' amount of carbon deposits? Is it worth cleaning these off if I do take them out for new rings? How does one clean piston crowns?
thanks all