240swapped Posted April 20, 2008 Share Posted April 20, 2008 promise to spray paint another big frownie face across the block before you chunk it in the dumpster. i got a kick outta that. Quote Link to comment Share on other sites More sharing options...
cholag Posted April 20, 2008 Author Share Posted April 20, 2008 Hahaha I am glad someone laughed, I will think of something real funny to spray paint on the block just for you man. And I will get that block sonic tested or find a place that does it Monday morning. Also can I get some pocket change for that block? Quote Link to comment Share on other sites More sharing options...
naviathan Posted April 20, 2008 Share Posted April 20, 2008 Might be able to get something for it from a metal scrap yard. It's pretty heavy, so I'd imagine they'd give you some sort of pocket change for it. Quote Link to comment Share on other sites More sharing options...
jt1 Posted April 20, 2008 Share Posted April 20, 2008 Why don't you take one of your old pistons, with the rings on it, and pull or push it thru the bore. See if there are any tight spots where the rings pass over the light areas. If you have, or can borrow, some suitable scales, you can measure the force required to pull a piston thru, and see if there's an increase. Wipe a light coat of oil on the bore first. Some engine builders do this to measure ring drag, and it will help tell if you have a problem. Can you run your finger over it and feel a dimple? jt Quote Link to comment Share on other sites More sharing options...
dr_hunt Posted April 20, 2008 Share Posted April 20, 2008 Sonic testing doesn't reveal cracks, magnafluxing does. Have that done, bore it to the next oversize if there are no cracks. Anything else would be fruitless IMO. Quote Link to comment Share on other sites More sharing options...
cholag Posted April 20, 2008 Author Share Posted April 20, 2008 Alright, I ran my finger over that spot numerous times and I didn't feel a thing, then I put some 5w-30 on the cylinder wall and on the piston. I moved it up and down and it was smooth, it didn't catch anywhere on that spot. Can I buy magnaflux or whatever, would I have to go to an engine shop to have it done? Quote Link to comment Share on other sites More sharing options...
naviathan Posted April 20, 2008 Share Posted April 20, 2008 You have to go to an automotive machine shop to have magnfluxing done. dr_hunt is right, I don't know why I was thinking a sonic test would show cracks, that's for lining up a large over bore. Quote Link to comment Share on other sites More sharing options...
jt1 Posted April 20, 2008 Share Posted April 20, 2008 Did you have rings on the piston? Just the piston by itself won't tell you much. You will have to go to a machine shop to have it magnafluxed. jt Quote Link to comment Share on other sites More sharing options...
cholag Posted April 21, 2008 Author Share Posted April 21, 2008 Yes I did have the rings on the piston, when I was moving it up and down and tomorrow I will go the the engine shop and get it magnafluxed. Quote Link to comment Share on other sites More sharing options...
e_racer1999 Posted April 21, 2008 Share Posted April 21, 2008 Hahaha I am glad someone laughed, I will think of something real funny to spray paint on the block just for you man. And I will get that block sonic tested or find a place that does it Monday morning. Also can I get some pocket change for that block? ya, i loled at that too.... is it really that difficult to find an F54 block where you are? Quote Link to comment Share on other sites More sharing options...
steveosupremeo Posted April 21, 2008 Share Posted April 21, 2008 unless one of the pics is a flipped image the dimples on the outer bore and the spots on the inner bore are opposite of where they should be in respect to up and down, if you caused damage. Quote Link to comment Share on other sites More sharing options...
cholag Posted April 21, 2008 Author Share Posted April 21, 2008 Alright, so I took the block to the machine shop, when the guy saw it he said it should be fine and he did that magnaflux stuff and he said there is no cracks. Then I took it to my high school auto teacher and he is ASE certified in engine rebuilding, he said it shouldn't be a problem. Yes it is very hard to find z stuff in Michigan! The Michigan salt kills our cars and you would be surprised to see a z here, if anyone ever wants to sell there z for a lot come here and sell it. I just saw a 77 280z 2+2 stock on the way to the machine shop and the guy wanted 2200 firm for it. Also the only other turbo z I have seen was in the junk yard, where I just recently got my BW T5 from, for $60:mrgreen::mrgreen:. Another one that I saw was a 82 280zx N/A stock and the guy wanted $2500 for it and I have had people come up to me and ask if I am selling my car when I used to drive it last summer. Quote Link to comment Share on other sites More sharing options...
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