So I went and started playing with the Z today. Me and my buddy decided we would attempt to her to run, even though it hasn't been run in 8 years, and most people I've talked to said it probably won't. She runs, although very noisily...
Theres alot of noise from the valve train, and i think the water pump is shot and making a good portion of that noise as well. Next thing to do is change the oil and filter, and see if that quiets her down a little bit.
"so let me get this right, you bought the motor before you even have a car to put it in? You're insane." - my ex-girlfriend update: - So I kept the dream and got rid of the girlfriend... ... At least now I have a car to put it in now- a 260Z-
hard to tell on a vid but kinda sounds like some wicked valve train noise, have you pulled the cam cover yet? that's be one of the first things I'd check
"if I had all the money I ever spent on cars........I'd spend it all on cars" 12.378 in a rusty datsun with a sliping clutch "The Rusty Mistress" 299.3 whp and 305 lbft TQ, 2105 lbs I'm cleaning out my garage, lots fo Z parts, S30, Z31 and Z32 here is my ebay listing http://motors.search.ebay.com/_W0QQsassZevildky if you're looking for something shoot me an e-mail, evildky@bellsouth.net
Or at last open the oil filler plug and look in with a flashlight and make sure oil is circulating. But hey congrats! you're ahead of me on your project. I haven't even tried starting my 280z. it's also been sitting for 6+ years. Put the charger on the battery last night, n we'll see if I have to buy a battery today.
We have the same color interior, but I'm going to change mine probably to black or spice, not that the remnants are worth anything.
yeah the valve train makes ALOT of noise. i even dumped half a quart of oil in it just to see if it would quiet down a bit. i'm thinking that perhaps the problem is that the lifters aren't filled all the way. (i'm assuming it has hydraulic lifters) i didnt have time to really pull it apart and check it out though. As for the interior, yeah its gotta go- most likely when its time to get the interior done ill have it done in black with black suede trim...
Did you say the engine hasn't been started in eight years?
A noisy valve train is to be expected. You don't have lifters but have direct acting rocker arms with mechanical lash adjusters. I think only the P90A head has hydraulic lash adjusters. You should take the cam cover off and check the valve lash. Also ensure the cam and rockers are getting oiled properly. If your head has an oiling bar ensure it is clean and the oiling holes are open.
These are skills all early Z owners should master.
Reggiegsd
"If you ain't cheetin', you ain't tryin' hard enough."
the prior owner said that the head was off a later (?) car. the valve cover actually says nissan on it. so i don't know what head exactly is on there. i know it has a two carb set up from a 240Z tho. I realize i have alot of stuff to learn about my fair lady. i just want her to run, till i get the Rb swap in.
what are the difference in heads? I heard that the old 240Z carbs are better then the 260Z but as far as heads go i figured they were all the same for the s130 chassis
70-71 used the E30 head, it had small valves and the smallest combustion chamber of any L6 head in the states and an externally llubricated cam, the E88 was found on 72-74, has the same small valves but a larger combustion chamber reducing the CR still externally lubricated cam, N42 found in 75 and I think 76 had about the same volume as the E88 but with larger valves and an internally lubricated cam, N47 came in 76-78, was the same as the N42 except that it had sleeved made intot he exhaust for emissions reasons, I believe79-80 S130's also got the N47 but I'm really not sure, I do know that 81-83 has the P79, which has the larger valves, internally lubed cam and a slightly larger combustion chamber, and the same sleaves in the exhaust runners, the turbo's came with the P90, which was identical to the P79 except without the exhaust runners, there were 2 versions of the P90, the P90 and the P90a, the a is the more common version, it came with hydraulic pedestal lifters, all others were mechanical
as for carbs, theey changed a lto as well, there are round tops in earlyu cars, 70-71, 72-73 got square tops, and the 74 got a reworked version of the flat tops in the beginning f the year but by the end of the year they were fuel injected
70-71 used the E30 head, it had small valves and the smallest combustion chamber of any L6 head in the states and an externally llubricated cam
The E30 does have the smallest chambers at about 37CC, but was only available in Japan. The E31 head with the smallest a chambers at 42.4CC's. I've got one =D
The E30 actually had slightly smaller intake valves than the E31
Quote, originally posted by evildky »
the E88 was found on 72-74, has the same small valves but a larger combustion chamber reducing the CR still externally lubricated cam
There's supposed to be 3 versions of the E88, one of which was only made for a few months, that one had a slightly different shaped combustion area and larger ports, but the ports had a choke point that if you revome by porting the head, open the ports up really nicely. I can tell you I've seen two. I had a regular E88 from my 72 engine, and I managed to get ahold of one of E88's that was only made for a few months.(still holding on to that one)
The E88 chambers are 44.7CC's
*Edit* the 260's E88 looks much different than the other 2 E88's, but is supposed to be the same CC's
Quote, originally posted by evildky »
the P79, which has the larger valves
Actually the E31, E88, N33, and P50 heads have 42mm intake and 33mm exhaust valves. 74 was the year they got bigger, the N42, N47, P81, P79, P90, and P99 all have 44mm intake, and 35mm exhaust valves.
Quote, originally posted by evildky »
as for carbs, theey changed a lto as well, there are round tops in earlyu cars, 70-71, 72-73 got square tops, and the 74 got a reworked version of the flat tops in the beginning f the year but by the end of the year they were fuel injected
72 has the 3 screw round top SU's, and I think 73 did as well, but I'm not sure on the 73.
Btw, Evildky, I'm sorry for dissecting your post, I'm not doing it to be mean or anything like that. I just happen to have 5 different heads in my shop to choose from and have been doing research on them for the the last few weeks. So I had all the info on the heads handy.
Modified by DemonZ at 11:45 AM 6/3/2008
Modified by DemonZ at 11:45 AM 6/3/2008
Modified by DemonZ at 12:21 PM 6/3/2008
'93, 300ZX Convertible '72, 240Z "DEMONZ" Bought on 06/06/06 '77, 280Z "Izanagi" Currently powered by my "Black Bastard" motor
no sweat, I was on my laptop and didn't have the volumes at ahnd, and as I stated the e31 hhad the smallest chamber in the states, and I said taht the n42 got larger valves and taht the p79 simply shared the larger valves, I've hards there were some rare E88's floating about but not common enough to bring up, and I purposely omitted the maxima head as this is the z section and they are pretty rare these days
