Engine & Drivetrain
Post messages here about engine mechanics, exhaust, intake, etc. Anything to do with the engine system as a whole.
5,574 topics in this forum
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- 2 replies
- 2k views
I'm having troubles with initial start-ups. This is on a stock 76 FI Z. I crank it for ~ 5 secs and it doesn't fire. After doing this 2 or 3 times, it fires, but sputters and even backfires a little. Then by about the 5th or 6th try, I can keep it going and after a couple of minutes it runs great - very responsive, lots of power, smooth idle, no smoke from the tail pipe, etc. Its' just that initial start-up I'm having trouble with. Over the Summer I did put quite a few new parts in which did help so that as I mentioned, after initial start-up it runs great; new plugs/wires, distribitor cap/rotor. ignition coil, fuel injectors, fuel filter, and the timimg is on, the AFM ch…
Last reply by EuroDat, -
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- 4 replies
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Howdy all. I've a cam 300/300 duration valve lift 0.453" inlet valve lift 0.451 exhaust Timing inlet open 43btdc closes 77abdc exhaust open 77 bbdc closes 43 atdc Full lift 107 deg atdc inlet btdc exhaust Am I right in thinking that the lift is a little low? Reading the specs it reads like it should be a nice 4-7000rpm grid, or have I missed something!? Its going in a 2.4(+1mm) 40mm carbs, proper exhaust, modded e88 with large valves and skimmed etc.
Last reply by Jason240z, -
- 7 replies
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I have a L28 motor with N42 head in my 260z, it was like that when I bought the car. A friend of mine had a header literally lying around his shop and gave it to me. Its got round ports and appears to be ceramic coated so score. The main goal is to be able to reduce under hood temps which I figure I can do by wrapping these headers, I have done this on dirt bikes and v8's with excellent results. My N42 head has square exhaust ports, this is a round header.. 1. Will this mount properly with standard gaskets? 2. Obviously there will be some restriction going from the square hole to the round one, but will it still perform better than the stock manifold? 3. I plan on b…
Last reply by Kurbycar32, -
- 15 replies
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So I finally got time to work on the car. I had not been driving it as it was getting progressively harder and harder to start when cold. Cap ,rotor, wires , and plugs are all in good shape. I decided to adjust the valve clearance and wow am I glad I did! The valves were all tight, only one had any play with the cam lobe straight up. Adjusted intakes to.20 mm and exhaust to .25mm. Put her all back together and she fired up straight away! Unbelievable in my book especially as # 3 and 4 are not firing! I verified there is good spark at the wire, Is it possible I screwed up the adjustment so bad on those two that they won't even fire? I'm pretty sure I didn't, but I can't t…
Last reply by northernz, -
- 21 replies
- 2.6k views
Ok I replaced the master and slave to the clutch but its still hard to shift into first and second and reverse is stilll grinding I need help
Last reply by silvey19k, -
- 10 replies
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I have no idea what the problem is, and im stumped. I have a 1976 280z, carburated with a holley carb. my engine bay The cars my DD. I replaced the oil pump maybe 500 miles ago. The timing was off, but I followed the FSM and set it TDC, and put the dist. to 11:25. After that, it fired right up and drove GREAT for a couple weeks. Then the seal on my water pump blew and i unloaded all my antifreeze on the highway and had to get towed 25 miles back to my home to fix it. The car drove great for about 3 days. I parked it last night, after driving normally, and this morning when I went to start it, it started for about 2 seconds, and died (which is always does when it's col…
Last reply by austinnelson117, -
- 7 replies
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One of the side seals in my R180 diff are leaking. I've never replaced the side seal on a 180. I've replaced it on an R200 but not the 180. I assume you remove the bolt in the center of the flange and simply pull it out, but I don't like trial and error. The factory manual is not very helpful. Anyone help me with this? Thanks. Guy
Last reply by Diseazd, -
- 5 replies
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I cant get this to start. I thought it had bad gas in from sitting but its fresh and doesnt smell raw. The PO said they have been fresh gas with stabilizer to it. Will start on carb cleaner but only run on whats sprayed into the carb. I took the outgoing line off the fuel pump to check pressure by plugging the hole with my finger. When I do that I no force at all trying to push my finger off the hole. The fuel filter and fuel pump are bone dry. Fuel pump or clogged fuel line? What the fuel pressure supposed to be?
Last reply by davbell22602, -
- 4 replies
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One fellow member has got his hand in these 2 cams and im asking in behalf of him and me (im buying the other). Here are the specs: # R 234-311-6 (the -6 might possibly designate an L24 cam) At 0.008" lift: In open 63 deg Bef TDC In close 87 deg Aft BDC Ex open 97 deg Bef BDC Ex close 53 deg Aft TDC 330 deg duration at 0.008" lift 0.473" lift at valve At 0.050" lift: In open 17 deg Bef TDC In close 39 deg Aft BDC Ex open 49 deg Bef BDC Ex close 7 deg Aft TDC Valve lash: 0.008" IN, 0.010" EX Also found this, specific to the BRE 240Z 311/C-1 cam: At 0.001" lift: In open 33 deg Bef TDC In close 66 deg Aft BDC Ex open 66 deg Bef BDC Ex close 33 deg Aft TDC IN Lift at TDC 0.1…
Last reply by 240260280z, -
3:54 or 3:7? 1 2
by Reverend- 17 replies
- 3.2k views
Im swapping a "new" tranny (-77 5speed) and im thinking of changin the differential too. Which one is better ?
Last reply by madkaw, -
- 7 replies
- 1.3k views
I need some help determining the length of a 1970 driveshaft. Either from the center of each yoke or u-joint or just the length of the shaft itself up to the weld ring for the yokes. Thanks
Last reply by ZCurves, -
- 4 replies
- 2.2k views
Howdy, On my 78 280z I have decided to install some aftermarket gauges to monitor oil pressure and water temp. Would anyone know off the top of their head if the threads on the stock oil pressure sender are bspt or bspp. The sender unit that came with my new gauge is a npt so I am looking for the correct adapter. Thanks, Tex
Last reply by Texas280z,
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