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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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Cleaning Rusty Deck Surface on Block

March 20, 2005 by Dans240z
3 replies

4.1k views
The block has been sitting all winter and there is some rust on the deck and in the bores. It is only surface rust. The How to Rebuild Your Nissan Datsun OHC Engine by Tom Monroe says nothing about removing rust. What is the best way to take care of this? Here are some pictures

Last reply by LanceM, March 20, 2005
Running Rich 1 2

December 10, 2004 by Hrududu
15 replies

3.5k views
Sorry if this is pretty basic, but im still pretty new to the Z (and most engines) I know that my car is running rich. A friend of mine who is a mojor in car repair has told me thats the problem. All i need to know is what i need to do to fix this and get the Gas-air ratio right. Its a 77' 280 that is all original. I have looked and cant find any instructions on what needs to be adjusted or fixed. Thanks in advance. I know you guys here are great!

Last reply by TomoHawk, March 20, 2005
Going Muffler-less 1 2 3

February 1, 2004 by TomoHawk
24 replies

4.7k views
Did anybody try running their Z engine with only the expansion chamber on? I saw some neat Ansa tips and figured it would look cooler than some old rusty tailpipe sticking out there. thx.

Last reply by Dans240z, March 19, 2005
EFI Hassles 1 2 3

September 23, 2003 by 280zx Fever
26 replies

3.8k views
Basically my 280zx will not run on all 6.. It will only run on 4 cyl 1-#-#-4-5-6 and not 2-3 at all. I got the following, Spark to all cylinders Good compression - 190 or more in all cylinders Pulse And The injectors are squirting fuel more like spraying.. I replaced the injector hoses as they where rotted out.. I also got fuel coming into and out of the rail and the pressure regulator seems to be working great as well as pressure to the rail from the pump.. Any ideas? it must be electrical i think... It will start up perfectally on 4cyl and idle nicely Ignition timing is fine aswell. thanks guys.

Last reply by san_maru_zed, March 19, 2005
I Need Help making Wood block for adjusting timing chain stretch! 1 2

March 15, 2005 by Larry 73Z
20 replies

5.8k views
Hey, does anyone have a good detailed picture and description of how to make one of the wood blocks that you make when you have to adjust for timing chain stretch? Thanks---Larry

Last reply by Bambikiller240, March 19, 2005
Stock Injector Specs 1 2

March 17, 2005 by TomoHawk
15 replies

2.4k views
Can somebody give me the specs on the stock injector for a 280Z? I need the OEM Bosch part #, but the Flow rate, etc. would be good to have too, so I can select al alternative, if I need to. thx

Last reply by TomoHawk, March 18, 2005
Fuel Rail Suppliers 1 2

March 2, 2005 by TomoHawk
14 replies

2.1k views
I think I would like to replace my fuel rail instead of spending much time cleaning & polishing because I think the sanding might weaken the tubing. Does anybody know of any manufacturers? Something with fins and shiny/chrome? I saw the JSK one, and it would work, but it looks like a huge thing. thx

Last reply by TomoHawk, March 18, 2005
Video: OS Giken TC16-MA2 and a LY-240Z racing 1 2 3 4

January 27, 2005 by Hallowed
43 replies

12k views
Thought you guys would appreciate this, hopefully not a repost. http://www.osgiken.co.jp/video2001.wmv 230HP / 150 lb.ft from a naturally aspirated 1.8L L-series... wow.

Last reply by bpilati, March 18, 2005
Primer before Engine Paint?

March 17, 2005 by SuperDave
2 replies

2.3k views
I have some Dupli-Color 500 degree engine paint. Reading the label, it doesn't say anything about primer. Their web site doesn't mention primer on engines either. What would you suggest? Is this stuff supposed to go directly on the bare metal?

Last reply by kcdc, March 17, 2005
Looking for a source to supply pistons for 3.0 280ZX

March 16, 2005 by ZSaint
4 replies

1.9k views
Who is a reasonable supplier of L6 pistons? I have a set of pistons that the engine builder "mocked up" and told me the pistons were at deck height. When he put it together he said the piston is down in the bore .050!!! He calculated the cr to be 9.3 and now he says it will be 8.1. It will be perfect for a turbo but I have no such plans. I do not want to spend $600 on a set of custom forged pistons. I am happy with a good cast piston. What do you guys recommend? specs: 87.5 mm bore with a 83 mm stroke = 2995 cc

Last reply by ZSaint, March 17, 2005
Custom Intake Manifold

March 9, 2005 by ZTORE
2 replies

1.9k views
Hi, Been searcing around for an intake manifold for my L28 engine. I'm replacing the original for many reasons, mostly because it is the current bottle neck on my engine, plus it's ugly.. I have found two promising; Arizona Zcar's intake manifold that i want, want, want, but they have been out of stock for over a year, and I'm getting a bit tired of waiting. Then there is Racetep's tripple throttlebody assembly, but it's a bit pricy (2300+tax...). So if somebody has something raceworthy lying around, or if you have any good ideas where I could find one, I'd appreciate it.

Last reply by ZTORE, March 16, 2005
Should i change my water pump?

March 16, 2005 by Jayru
4 replies

1.4k views
I've going to do all the belts while i'm converting the alternator to a ZX unit. Since i'm so close should i do the water pump? The car has 82k original miles and the water pump shows no signs of it not working (No wobble, noise, keeps cool). Should i change it since i'm there or leave well enough alone? It looks to be the original unit. Also, the PO supplied me with 3 brand new belts, but they must be 10+ years old. They look perfect (No cracks, ect) Do you think they're still good? Thanks, Jay

Last reply by 240ZX, March 16, 2005