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
-
- 2 followers
- 5 replies
- 849 views
New owner of a 72 240z coupe. Original engine. This weekend measured compression. Wondering what compression should be for a stock motor. Front to rear: 160# 160# 160# 158# 155# 146# The difference between 160# and 146# is 8.75%
Last reply by siteunseen, -
-
- 3 followers
- 24 replies
- 2.1k views
Hello, I apologize if this has been asked before but I have searched the forums to no avail. I’m in the process of rebuilding the engine on my Series One 240z that was manufactured in 8/70 (not sure if it is a 70 or 71 model year). My local machine shop has told me that the head is rotted out and I will need to get a new one. I would like to replace it with the original head, however I am not sure if I need an E31 or E88, as some sites say that all 70-71 model years came with E31 while others say only the 70 model years had it (and again, I might have a 71 model). Are there any sure ways to tell which head I have? I’ve seen Zhome’s page about telling an E31/early E88 ap…
Last reply by madkaw, -
- 3 followers
- 32 replies
- 3.8k views
78 280Z. So over the last few months I've disassembled, refurbished and now am reinstalling my rear suspension. Today, I began installing the mustache bar, differential and forward differential mount. I lifted the differential into place and bolted up the mustache bar to the differential and to the body mounting bolts. Then when I went forward to bolt the forward differential mount to the body I was confused that the mount bolts didn't line up with the screw holes in the body. The mount was too far forward by at least a couple inches (photos). It looks like it might all line up fine if I reverse the mustache bar, but all the diagrams/photos I've seen show the mustach…
Last reply by Namerow, -
- 2 followers
- 7 replies
- 1.1k views
I recently pulled my transmission, and to my own embarrassment noticed that when I installed the clutch last year, I had used a variety of bolt grades. Now that have the opportunity I figure that I should attach it properly. The clutch is held by 8mm bolts, and I began to install new 8.8 grade pieces. But I'm confused about torque. The FSM calls for 17.4 to 18.8 ft/lb, which to me sounds pretty loose. I then went into the Haynes and Clymer manuals, and they're all about the same. The chart I use for general torquing reference calls for 30 Nm, or roughly 40 ft. lb for 8 mm, 8.8 grade bolts. Can anyone tell me why, in a fairly heavy duty application such as c…
Last reply by Richard McDonel, -
- 1 follower
- 11 replies
- 7.3k views
While driving my 240z during ZCON I noticed more clunking coming from my driveline as I shifted. I already have an RT diff mount installed so I looked at the transmission mount. Using my adjustable safety stand I could move the transmission up and down and see the mount moving with it. Based on the video I captured it looks like the mount is at the end of its service life. I did some searching but could not find type of polyurethane replacement mount. My 240z has a 5spd in it from a 1977 280z. Should I just buy a rubber factory replacement or can a poly mount be used with some fabrication? https://youtu.be/XTcd4uWs6Cs
Last reply by Reinier, -
- 4 followers
- 11 replies
- 1.9k views
New old stock Nissan tools with tool roll bag. New, vintage, still in original plastic bags---- not a reproduction. Not specific to the Z car alone, but available with many Datsun and early Nissan models as a Dealer available accessory item. Even includes a points file for you purists!
Last reply by kats, -
- 1 follower
- 3 replies
- 687 views
I currently like the idea of keeping my z as stock as possible. I’m no purist. I preffer making things better if it will prolong the life of the car, or if it’s a safety item. My question is, should I replace the original radiator, or just have this one boiled ?
Last reply by siteunseen, -
- 1 follower
- 9 replies
- 1.3k views
I need gaskets for my oil bar. Where can I get these ? Thank you.
Last reply by Mark Maras, -
- 4 followers
- 15 replies
- 2k views
Having trouble locating Redline MT90 for my 83ZX 5 speed. What else might work?
Last reply by Zed Head, -
- 2 followers
- 8 replies
- 2.3k views
I installed the XR 70O purchased from motorsports with the thought it would increase my cars performance. I have a late year 260z with dome carbs. I really don't know if it does anything other then make my tach run a little screwy. What are your thoughts who has this setup and is it an improvement over the stock set up. Should I keep it or take it out and have a more steady tach? your thoughts
Last reply by Zed Head, -
Spare engine N42 1 2 3
by Dave WM- 4 followers
- 28 replies
- 3.2k views
This is the one I had the broken bolt on the exhaust manifold. Next up was a leak down test. Only #4 and #6 passed (about 80psi/75psi), on the rest it was more like 80/30 and you could feel the air coming out of the exhaust port. The valve lash was loose but I will check it again anyway, prob do a video. So now I will pull the head and learn about valve seats and valves. There are several machine shops in the Orlando area, I plan to call https://southeastcylinderhead.com/ Monday and see if they have experience on L28 heads. I did not bother to pull any of the crank shaft caps to inspect the bearings. will do that after I get the head worked out. I did not do a reg compres…
Last reply by dutchzcarguy, -
- 3 followers
- 8 replies
- 5.1k views
I need to replace all the hoses in my 1970 240Z. Has anybody got a quick order guide, or something like that, that will help me get this done. Maybe even possibly something like buy a roll of three hose sizes?
Last reply by siteunseen,
-
Recently Browsing 0 members
- No registered users viewing this page.
