Engine & Drivetrain
Post messages here about engine mechanics, exhaust, intake, etc. Anything to do with the engine system as a whole.
5,568 topics in this forum
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- 4 replies
- 694 views
I’ve been tracking my Z more, I’ve been a bit concerned about oil starvation as the pan is not baffled. I was thinking that a turbo oil pump might be beneficial as I’m running bit of a unknown pump that I just threw in when I was assembling the motor. The motor is an flattop overbored L26, with a n42 head that’s been slightly shaved down. Usually on idle it can appear to be pretty low on the guage, esp if the oil is nice and HOT. Are there possible downsides to having too much oil pressure/flow in the system? I’ve seen that some people ( @siteunseen ) say that the pressure gauge was pinged 1/2 to 3/4 on idle, it seems like the flow difference is quite a lot. …
Last reply by siteunseen, -
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- 2 followers
- 15 replies
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Do you guys think it’s possible to drop the crank out of a car without removing the motor? I would assume the automatic gearbox would need to be removed, not sure if there is anything special about its removal; just drop the driveshaft, bell housing bolts and anything that is connected to the crank. It seems like the only questionable thing is if the crank can clear the subframe..... seems a bit risky tho. anyone ever do something this dumb? 😇 remind me of any tools I might need to bring besides the whole garage.
Last reply by Racer X, -
- 2 followers
- 12 replies
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I have the 280zx f54 block but a front cover from a 280z with the 280z timing plate on it and never really thought about it but do the numbers line up to the same? Or should I get a 280zx plate? I have the p79 head also if that matters I can’t tell but it looks like the 0 would be on different spots 280z timing plate 280zx timing plate Sent from my iPhone using Tapatalk
Last reply by Zed Head, -
- 1 follower
- 1 reply
- 479 views
While tinkering with transmission isolators the other day, I noticed a little something that might be helpful that I do not remember seeing before. Often I stare at the transmission isolator as I’m about to put it on and wonder (again) which way around it goes. Which way is front? Well on a genuine Nissan mount, there is a little clue, if you know where to look Do you see it? Now I should go look at a diff isolator and see if the same little arrow is hidden under some dirt and oil I do not see this little clue on another one that I have that is an aftermarket item. Another reason to buy Nissan if you can afford it.
Last reply by Zed Head, -
- 2 followers
- 9 replies
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Hello Z Community, Long time listener, first time caller! I actually bought my 280Z from this forum in 2014. I've been slowly rebuilding it. LOTS of rust. Eiji built a stage 4 motor for me and I'm getting close to putting that back in after years of work. I have a stock R200, 3.54 open diff and it will mate with an 83' ZX NA trans. I've been looking for someone to rebuild the diff with 3.90 gears and an OS Giken LSD. Does anyone have experience with Whitehead Performance? Does anyone have another supplier that can do a great job? I had contacted JE Imports but they don't have the gear sets anymore. Below are a few photos. Thanks for any in…
Last reply by jnh-280z, -
Local engine builder 1 2 3
by z8987- 3 followers
- 31 replies
- 3.1k views
I found a capable local guy that should have no problem rebuilding my 70 series one engine. Is there anything I can provide him that will assist in his success. He said he has no problem getting parts, and building the engine, but I'd appriciate any information that might be useful. I've already got a document that has links to everything Z related. I probably got that here.
Last reply by z8987, -
Cam Towers 1 2
by Trnelson- 2 followers
- 19 replies
- 1.6k views
Getting ready to assemble my cylinder head this weekend. On a mock up run the cam didn’t turn what I would call freely, I could turn it with one hand but it did require some effort. This quote from “How to modify your Datsun” has me wondering how precisely “striking the tops of towers” is done? I understand the towers are align bored but it sounds like there is some percussive finesse potentially needed to get them back in line. Any tips on the assembly? thanks Tom
Last reply by siteunseen, -
- 2 followers
- 11 replies
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If you've been following my thread on a FS5W71B with a slipping 3rd/4th, I've disassembled and found numerous worn parts that cannot be replaced. To quote zKars "Holy crap, those teeth are in bad shape. ..You are out of luck as to finding a replacement. Time to look for a new transmission I think. " I found a used transmission on Facebook/market 3 hours away: https://www.facebook.com/marketplace/item/428839345022192/?referralSurface=messenger_lightspeed_banner&referralCode=messenger_banner Is there anything I can do to check it out before I pay for it?
Last reply by Jeff Berk, -
- 5 followers
- 50 replies
- 4.7k views
Hello, I am looking at buying an L26 engine for my 240z the plan is to use the l24 flat top pistons and a decked e88 cylinder head to get more compression. The ozdat calculator says that with a 1.25mm thinner head gasket and the l24 pistons I will get a compression ratio of 10.5/1 is this equivelent to machining 1.25mm of the cylinder head and using the stock head gasket? Is it even possible to remove that much material?
Last reply by bartsscooterservice, -
- 1 follower
- 6 replies
- 669 views
Hi All, I've lurked for a while and read quite a bit here, but now I need some direct help. I'm rebuilding my L26 currently and would like to put a more aggressive cam in while I'm there. I'm new to this kind of engine building. Been working on air cooled 2 stroke engines for while. From what I gather, the standard way of doing things is to come up with your power goal first and then decide what parts to get. In an effort to learn more about how all these areas affect each other, I've started looking at cams first (maybe not the best idea, I know). I want my 260z to be generally in the area of a resto-mod. I have round top SU's I'll be using. Looking for some…
Last reply by The Red Scourge, -
- 4 followers
- 83 replies
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After almost 2 years of slowly rebuilding the engine, I finally got my '70 240Z to start up today! This is the first time I've ever seen the car run, so I'd love some feedback from you all with more experience on how it sounds. The car starts up pretty easily, even with the choke completely disengaged. The RPM seems to drift all over the place though, so I had to keep messing with the fast idle screw to keep it around 2,000 (just above Tom Monroe's recommended 1,500 minimum). It sounds kind of rough to my ears, but again I've never heard the car run properly so I really have no idea. This was originally my (soon-to-be) father in law's car and he thought it sound…
Last reply by ETI4K, -
- 1 follower
- 1 reply
- 432 views
Need little help. One image attached..It is from inside looking through gear shifter section marked 2's...is anything to be attached here? Section marked 1 is where tranny slips in... I am wondering if i leave motor and tranny connected and remove it all at once does it simply simply out of this housing then slip back in when re-attaching? thanks
Last reply by siteunseen,
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