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Engine & Drivetrain

Post messages here about engine mechanics, exhaust, intake, etc. Anything to do with the engine system as a whole.

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Crank Pully Bolt Size

October 20, 2003 by sahunt66
2 replies

1.5k views
For a '71 240Z, what size socket fits on the crank pully bolt? Thanks

Last reply by sahunt66, October 21, 2003
Question regarding intake balance tube. 1 2

October 20, 2003 by 240ZX
12 replies

3.7k views
I've got a question for you all. Regarding the balance tube assembly on a 1970, is it the only balance tube assembly that has the fitting for the brake-vac line that point toward the firewall, as opposed to point up? I'm just curious, because most of the ones I see point up. Mine actually comes srtaight out the back of the balance tube. The vintage of my Z is....1970, mfg date 3/70, s/n 02126. Please help us older guys. P.S. Stay young, as getting old holds no future! Unless you own a seires one Z of course.

Last reply by 26th-Z, October 21, 2003
Headers /Exhaust suggestions 1 2

October 19, 2003 by seerex
13 replies

1.7k views
I have a exhaust leak from the smog crap it rusted a hole in the pipes that come up from the manifold , any thoughts , msa their header or the monza from bv , both very close in price I was considering the 3 to 2 to one from msa anyone has good or bad on them and the exhuast the monza as opposed to the targa? Thanks Jeff:geek:

Last reply by blitzkraig, October 21, 2003
Starting a motor that has been sitting 1 2

October 14, 2003 by drunkenmaster
16 replies

2.1k views
Hey guys, Im selling my L28ET setup as a few of you know and I want to make sure its running for the next owner. The L28E ran fine when I bought it around 6 monthes ago but the battery was flat and I havent started it since as i planned to rebuild it anyway. I know this isnt a huge deal as some of you guys pick up motors that havent been used for several years, but is there any steps i should go through before I charge up a battery and fire her up? Remove the rocker and oil the head etc?

Last reply by drunkenmaster, October 18, 2003
2 row or 3 row ? Radiator

October 17, 2003 by taikaki
8 replies

2.6k views
Hello Zs I have 72' 240 with AC. I am going to replace my after market radiator to Nissan genuine radiator. I would like to know your opinion about 2 row or 3 row. I was thinking. If I have a chance to have new parts, I prefer it's close to original. This means 2.Is 2 row radiator with AC really dangerous ? Thanks

Last reply by Bambikiller240, October 17, 2003
omitting 280z smog stuff

October 12, 2003 by Pennyman
4 replies

2k views
Hi, i have a 76 280z that i just had smogged a few monthes ago, and i think it might be the last time i smog it. you have to smog your car every 2 years in CA and by the time i have to smog it again in 06, the car will be 30 years old, and hopefully smog exempt. my question is whether its posible to get rid of some of the smog stuff on the engine to make the compartment look better and maybe gain a little HP in the process. I've seen some 280zx engines in 240s that have had smog stuff taken off, and they work fine, and look great. im just wondering what you guys think of all this....anyway, thanx as always!! Joey

Last reply by Pennyman, October 14, 2003
What all would a 350 LT1 swap consist of into a 240z?

October 13, 2003 by sPaG
3 replies

3.8k views
Alright so im pretty much a newb to Z car's and such. My original plan was to drop a LT1 into a 2nd gen RX7 but theres a few of those in town arleady. So what all would I have to do to drop a 350 into a 240z? Thanks.

Last reply by Jae, October 13, 2003
05 Cylinder Head

October 12, 2003 by Mr Camouflage
0 replies

1.2k views
Anyone know anything about this head? The only casting ID i can see on it is "05" where is should say n42 or e88. They were on the late L20ET

Last reply by Mr Camouflage, October 12, 2003
I am replacing my valve stem seals, please help 1 2

October 6, 2003 by Sonic
15 replies

9.2k views
I'm going to replace my valve stem seals on my stock '73 240z. I'm sick of that grey cloud behind my car when coasting down hill. Besides the seals, what else should I get that might get lost or break when replacing them? Also, where should I get the seals? I heard that Autozone sells them, or should i get them from MSA? Thanks

Last reply by Sonic, October 9, 2003
300zx engine in 240zx

October 8, 2003 by Jae
2 replies

1.3k views
my friend just bought a 240zx, kind of rusted and broke down and hes trying to fix it up...he wants to know if puttin a 300zx engine in the 240zx would be a good idea..so?

Last reply by Inf, October 8, 2003
Efi again.......

October 7, 2003 by thefastestz
4 replies

1.4k views
i can't get my78 280z to stop fouling the plugs. The injectors weren't getting pulse and i replaced the ECU. (thought that would solve probs)It had electrical woes not engine related(i think) but i am out of ideas. What are the common causes of carbon fouling on the plugs. It seems to be running rich but what do i know. Could it be the ignition module? Is that common? I just need a place to start over with.

Last reply by Mr Camouflage, October 8, 2003
Any info on triple carbs?

October 7, 2003 by moyest
2 replies

1.6k views
Hello! I'm trying to get a bit more performance out of my 240Z. It's a 1972 model, and I want to go the "old school" route (not turbo, not EFI). You can check out pics of my Z at my website, just to get the picture (pardon the pun): www.angelfire.com/pro/240Z I was thinking triple weber DCOE40's (which are legal in my country, no problem!). I even found what looks like a good supplier for a full kit with linkages, anti-vibration mounts, and even a cold air box! But the PRICE! Woah mamma!! Check out the site: http://www.racetep.com/ztripdcoe.html Anybody have suggestions on reliable triple carbs for a decent price? Cheers!

Last reply by LanceM, October 7, 2003