Engine & Drivetrain
Post messages here about engine mechanics, exhaust, intake, etc. Anything to do with the engine system as a whole.
5,568 topics in this forum
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Hey Guys...I am considering installing an R180 diff with 4.11s (non LSD) in my stock '72 (original 2.4 engine with no mods). I will also be installing a 5-speed with a .8 overdrive. The original 3.36 rear is still in it. I ran the numbers and with the .8 rear, and the final drive ratio will be about 3.29. I plan to leave the engine alone and am hoping the 4.11s will wake the Z up a little at stoplights. How streetable is this combination?
Last reply by LeonV, -
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I dropped my E31 off at the machine shop. They called me today (I was having them vat my spare head before putting it on), and told me that the head is 4.227" high, 0.008" below the minimum height of 4.235", and that the previous mill job I had done (which took off 0.003") was done badly (their fly cutter picked up a repaired weld and grooved the head around #6). Finally, they told me that the intake seats need replacement as well as the guides (all the seats but #6 are brass). I'm not sure where to go from here. Is the head scrap? Is there a possibility of shimming the head (thicker gasket)? Will I have to shim the cam bearings when I get it back?
Last reply by Jehannum, -
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I went by a local machine shop last week to ask if they would consider re-working my N47 head off my '77. He had a head that was, as told by the customer off a '80 ZX, not picked up from 2006. He got it down and removed the bag it was wrapped in and to my surprise it was a N42 with a oiler cam and the cam towers did not have the holes for a spray bar. It has the hole up front for a mechanical fuel pump but no plate covering it. So could it be that someone had new cam towers installed and the power steering pump on the '80 car covered the fuel pump opening? All my searching shows the P79 had that same hole but would the head still be stamped N42 or P79? All I see is …
Last reply by siteunseen, -
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I've been chasing down valvetrain noise for the last month or two on my 240Z (stock block, E31 head), and I think I've found the culprit: #3 intake valve is sticking. I noticed it this way: I was (again) checking valve clearances, because of clacking, and once I had everything set, I cranked the motor over, and it sounded like a box of rocks. I pulled the valve cover again, and saw that #3 intake valve was stuck at about half-mast, the rocker arm quite askew. I was able to free the valve with a quick tap with a soft-faced hammer (it popped right back up). There is definitely some damage to the cam lobe at the edges (it threw a lash pad once before). There is no damage t…
Last reply by Jehannum, -
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As stated I have a Rebello 3.2 engine with the "big cam" 63de kit(according to the previous owners build sheet). I just wanted to know if anyone knows what the valve clearance specification is for this cam on both the intake and exhaust.
Last reply by GregNY, -
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:mad: Well I was all excited about the cooler weather and how well the car was running and then she started running kind of different. I pulled the plugs and #3 was about carbon fouled, but 1&2 weren't bad. So I whipped out the compression guage and all 6 were hovering around 180-looked good. So I'm thinking why would just one cylinder be rich when the other two on the manifold were decent. I had a spare set of bosch wires so I put them on and figured I would get some new plugs eventually. I swapped the #3 plug around to #1 so I could hopefully see if #3 would do that again. I also changed around by O2 sensor to the other bank of cylinders to see if I had them running…
Last reply by madkaw, -
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When I took my engine apart last January for a rebuild, the tube on the front of the block that attaches to a hose then to the PCV valve came out of the blockwith little to no resistance. this is a metal pipe about an inch in diameter, on the driver's side near the front of the engine. I'm assuming this is supposed to be a press fit? I'm thinking about making sure it stays with a touch of JB Weld or something similar. Thoughts? Devin
Last reply by beermanpete, -
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Can anyone recommend a place in the calif. central valley that will ceramic coat a set of headers?
Last reply by Travel'n Man, -
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I waited too long between removing the transmission front seal and installing the new one. Do I have it in the right direction? Is it correct that the open side always goes towards the liquid? thanks!
Last reply by ta240, -
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Well I tried everything I could think of to get the diff plugs out to do a gear oil change. The drain would go with a 1/2" breaker bar but the fill plug was not going to budge. Today I stopped off and picked up a long 17 mm combo wrench at Sears and got home. Then while the diff was still hot I threw the rear end up on some jack stands and put the new wrench to work. With the rear end hot the plug took one good jolt and it was loose. So there is another trick to getting that darn plug loose. Just run it till it's nice and hot. Works great.
Last reply by ZCurves, -
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What rear ends will fit the 260z and be compatible with the LS1 engine and T56 transmission? I'm really hoping to get car models if at all possible. Thanks guys!
Last reply by beermanpete, -
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I have been troubleshooting a fuel problem for a few weeks now... http://www.classiczcars.com/forums/showthread.php?t=38001 It's been an intermittent problem and I thought it was heat related but now I think it has to do with how much gas is in my tank. The car has been running perfectly all week until I filled up on the way home from work today. At the first light after I filled up it died. The car started again quite easily and I was able to make it home by giving it some gas at the lights to keep the RPM's up. It now occurs to me that each time this has happened it has been right after a fill up and the problem goes away after a burn a couple of gallons. I did a…
Last reply by bbook939,
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