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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I've pulled this flywheel out of my 1972 240Z. The car has 110k and likely has had at least one engine rebuild, so not sure this flywheel is original. It weighs in at 20 pounds on my bathroom scale. Out of curiosity, I've tried to ID it via google and various forums including here. The only cast and stamping marks I can see are JAPAN, 219, and 16030. Is this a common flywheel one may find in a 240Z? I'm taking it in, BTW, to have it turned and balanced as the engine has a bit of a vibration above 5,000 RPMs that a new harmonic balancer did not correct. Not a big deal since the engine is not modified so there's not much power up there anyway. I'll probably have it lig…
Last reply by 268Z, -
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Impossible Oil Leak? 1 2 3 4 6
by chaseincats- 5 followers
- 61 replies
- 3.9k views
Hi gang, Got a weird one for you today. It seems oil is somehow sneaking out of my valve cover's oil cap even though it is VERY tightened down. There is definitely a thin oil trail coming out of it and running further back on the top of the valve cover. The outlet for the valve cover breather hose also seems to be moist around the base of that L-fitting. Any idea how this is even possible? My oil pressure gauge is showing maybe 2/3s of the way up while driving and sits at around 1/4 at a traffic light so the pressure in there isn't anything out of the ordinary. I didn't think the oil caps had gaskets on the top, did they?
Last reply by Captain Obvious, -
- 3 followers
- 22 replies
- 828 views
I found information pertaining to this issue on this site and on Zhome.com. However, rather than bringing back a thread last contributed to in 2013, I will start a new one and hope I can fix the problem I am having. The Needle on my temperature gauge is definitely going to high. I know however, the engine is not overheating because I have checked it with a laser temperature gun. Here is the info I have so far regarding the problem. When I first bought the car, I got the engine running for a brief amount of time before taking the engine out for rebuilding. I ran it up to temp in my garage (car was inoperative) and noted that the needle on the temp gauge wa…
Last reply by cgsheen1, -
- 2 followers
- 4 replies
- 187 views
Guys, working with the starter i probably pulled this vacuum line from somewhere. It is coming from inside the firewall probably to the vacuum switch near the heater core etc. any idea where it connects in the engine?
Last reply by MH77280Z, -
- 3 followers
- 8 replies
- 2k views
The first paragraph will be a little bit of back story. I rebuilt my 260z mechanically this past 2-3 years, paycheck to paycheck, learning from my first project car. I have tried to do a sensible OEM+ type modifications. Last year I drove it 100 miles burned 2.5 qts of oil and decided to rebuild the engine. Fast forward i have redone the engine bay wiring harness while the engine was out. RELOCATED the ignition coil to the other side of the engine bay. i drove the car 50 miles after the rebuild then lifted it back on jack stands to do the suspension bushings and shocks. I also did a bit of wiring upgrades and buttoning up parts in various places. I have a no spa…
Last reply by Yarb, -
- 1 follower
- 1 reply
- 135 views
Guys, how hard it is to change the belts yourself? Also, for belts is there any recommendation for a brand or place to buy from? ZCD?
Last reply by siteunseen, -
- 5 followers
- 24 replies
- 5.7k views
Well I am installing one for a friend on my recommendation but what a piece of $^!#!!!!!!!!!!!!!!!!!!! It does not fit!!!!!!!!!!!!!!!! I've installed several Cannon, TWM, and even a Lynx but this is the first fitment problem. It looks great and performs well mechanically but come on!!! The Cannon that it replaced works fine. It will not fit properly against the header flange AND the stand-off for the rod hits the thermostat housing fittings. P O S !!!!!!
Last reply by madkaw, -
- 2 followers
- 4 replies
- 136 views
I'm looking to install a heat shield below my SU's, to replace the stock shield. I've been noticing a bit of stumbling after idling for 4-5 minutes at those stupid stop lights. It may be the California 10% ethanol gas lowering the boiling point, or the fact that I haven't yet done the Spring valve adjustment/plug change. I see Z Car Depot has one, not sure how well it works. Anyway, any other options or ideas out there? Thanks, Ken
Last reply by KenFirch, -
- 5 followers
- 35 replies
- 1.7k views
Has anyone else seen that their air filter housing does not seat fully against the seal even with an OEM air filter installed? I painstakingly refurbished the air cleaner housing. I re-used the rubber seals inside. The only replacement seal is the one that goes all the way around the periphery that is not making contact with the cover in the photos above. That seal came from Banzai. There is a gap of about 1/8" there - the outside periphery of the air cleaner cover is not touching the seal. The seals on the inside of the air filter back plate and cover are bottoming out on each side of the air filter. Is the factory air filter a bi…
Last reply by Patcon, -
- 3 followers
- 8 replies
- 373 views
Hello Folks, Can anyone suggest a source where i can purchase a used L24 long block for a rebuild project... I'd like it to be somewhere in the Seattle/PNW region so I can go check it out in person as opposed to buying something over the internet sight unseen.. Thanks
Last reply by Racer X, -
- 2 followers
- 3 replies
- 1.2k views
Spotted this Sports Option diff cooler and pump. Thought it would be interesting for some. @HS30-H can you say anymore, pump under rear floor mounted, bolt holes already exist? The auction listed it for the Fairlady Z.
Last reply by HS30-H, -
- 11 replies
- 6.3k views
Hello! Quick question for you guys with the GPS Speedometers. I bought a GPS speedometer from speedhut and I am currently installing all of my new gauges. Since the GPS speedo doesnt need the speedometer cable, what do I do with it? I would just remove the cable, but what would I use to plug up the transmission? Please let me know what my options are or what you guys have done to solve this minor issue. Thanks in advance!
Last reply by preith,
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