1970/240z Posted February 28, 2009 Share Posted February 28, 2009 To make the story short, i bought a 240z 3 months ago and i decided to built the car. Her are some pictures of the recent job. i will be posting pictures round every two weeks, feel free to comment and give me advises! Quote Link to comment Share on other sites More sharing options...
1970/240z Posted February 28, 2009 Author Share Posted February 28, 2009 (edited) Edited February 28, 2009 by 1970/240z update Quote Link to comment Share on other sites More sharing options...
rturbo 930 Posted February 28, 2009 Share Posted February 28, 2009 You might try uploading your pictures to http://photobucket.com/ Quote Link to comment Share on other sites More sharing options...
1970/240z Posted February 28, 2009 Author Share Posted February 28, 2009 my uncle is doing all the built, i need to give him the credit on that one. her is one of the pistons that we took out after cleaning, what do you think guys . should i use them again but with new ring? Quote Link to comment Share on other sites More sharing options...
ozconnection Posted March 1, 2009 Share Posted March 1, 2009 Mate, if you want to live long time, don't put engine parts on creme carpet! Quote Link to comment Share on other sites More sharing options...
josh817 Posted March 1, 2009 Share Posted March 1, 2009 Mate, if you want to live long time, don't put engine parts on creme carpet! I agree. Pistons are cheap, I wouldn't go with used ones unless that block was already honed/bored for them. Also, there looks to be a big gash in the deck surface in the picture of your block... Quote Link to comment Share on other sites More sharing options...
Careless Posted March 1, 2009 Share Posted March 1, 2009 block should be resurfaced... had looks really clean... so far so good... and what's with that notch on the piston crown? is that supposed to be there on? for what reason? As for the creme carpet colour. I think the reason you may not live long is because grease stains look like doodie, and if your wife thinks you dragged a piece of doodie into the house or decided to let one lose on the carpet, you'll never see the carpet again. or more importantly, the house (whether the deed is in your name or not!). or the light of day... which ever one she can make disappear first. Quote Link to comment Share on other sites More sharing options...
josh817 Posted March 1, 2009 Share Posted March 1, 2009 block should be resurfaced... had looks really clean... so far so good... and what's with that notch on the piston crown? is that supposed to be there on? for what reason? As for the creme carpet colour. I think the reason you may not live long is because grease stains look like doodie, and if your wife thinks you dragged a piece of doodie into the house or decided to let one lose on the carpet, you'll never see the carpet again. or more importantly, the house (whether the deed is in your name or not!). or the light of day... which ever one she can make disappear first. Notch marks the front so you don't put them in backwards. However you are running an RB aren't you... haha Quote Link to comment Share on other sites More sharing options...
1970/240z Posted March 1, 2009 Author Share Posted March 1, 2009 iam running an L28 Quote Link to comment Share on other sites More sharing options...
1970/240z Posted March 2, 2009 Author Share Posted March 2, 2009 block should be resurfaced... had looks really clean... so far so good... and what's with that notch on the piston crown? is that supposed to be there on? for what reason? As for the creme carpet colour. I think the reason you may not live long is because grease stains look like doodie, and if your wife thinks you dragged a piece of doodie into the house or decided to let one lose on the carpet, you'll never see the carpet again. or more importantly, the house (whether the deed is in your name or not!). or the light of day... which ever one she can make disappear first. that notch is in all the pistons, maybe the direction that the piston goes because they were all facing forward Quote Link to comment Share on other sites More sharing options...
josh817 Posted March 2, 2009 Share Posted March 2, 2009 ... yah just said that dude, however kudos for figuring that out from the clues. I was baffled until I read about it somewhere. Quote Link to comment Share on other sites More sharing options...
rejracer Posted March 2, 2009 Share Posted March 2, 2009 You need to measure the clearance on the ring lands to determine of the pistons are serviceable. There is no way we can tell from the pictures if the pistons are good. And as far as the carpet... carpet holds all sorts of dirt. dirt at the microscopic level is a bunch of broken up rock, and organic material. this fine abrasive material can muck up the works of any engine. Get the service manual, and look up the spec for ring land clearance, and go measure. The measurement will tell you if you want to use those pistons. Quote Link to comment Share on other sites More sharing options...
Careless Posted March 2, 2009 Share Posted March 2, 2009 Notch marks the front so you don't put them in backwards. However you are running an RB aren't you... haha So it's a piston offset indication mark then. my RB pistons that I sold had the mark on the top of the piston as a slight dimple. I just found it weird how the L pistons have a notch cut out of the crown so sharply, rather than a deep scribe mark. it looks like 4 hard edges near a hotter part of the piston, so it worried me. Quote Link to comment Share on other sites More sharing options...
Pharaohabq Posted March 3, 2009 Share Posted March 3, 2009 You should be able to use those pistons, just you'll need to be certain the ring clearace in the lands, if it's too wide then the ring will leak and you'll get smoke/bad compression. You've spent the money cleaning the engine up, you should probably just replace the pistons. While it's all apart like this, if you're thinking of turbo'ing the engine, then you should drop the $ and put in the forged rods and pistons. You'll then be able to run a little higher boost and vroom. Phar Quote Link to comment Share on other sites More sharing options...
1970/240z Posted March 7, 2009 Author Share Posted March 7, 2009 You should be able to use those pistons, just you'll need to be certain the ring clearace in the lands, if it's too wide then the ring will leak and you'll get smoke/bad compression. You've spent the money cleaning the engine up, you should probably just replace the pistons. While it's all apart like this, if you're thinking of turbo'ing the engine, then you should drop the $ and put in the forged rods and pistons. You'll then be able to run a little higher boost and vroom. Phar thanks for the info, but I am just only using this car for sometime. not looking for lots of power. this car will be my daily and maybe in the near future i was to go V8 swap. i just want the engine to hold one for sometime. Quote Link to comment Share on other sites More sharing options...
Montezuma Posted March 7, 2009 Share Posted March 7, 2009 That car looks a little rough for a So-Cal car...luck for you there are plenty of sources available to you here. Quote Link to comment Share on other sites More sharing options...
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