Engine & Drivetrain
Post messages here about engine mechanics, exhaust, intake, etc. Anything to do with the engine system as a whole.
5,569 topics in this forum
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Good Day everyone, I have a general question about the stroker engines out there. We built one and it recently beat the middle crank bearings up pretty bad without much time on the engine. My belief is we turned it too many RPM's and I want to know from the list if there has been a general consensus of where NOT to go with the RPM's on these engines, or where the harmonics are. This was a professionally built engine with very good parts. Thanks a million, Greg Ira Revtec Race Engineering www.revtec1.com
Last reply by Carl Beck, -
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I just recently got my z running, while the rear was up on stands I found that when i turned the right (passenger) wheel, the left (driver) wheel would spin the opposing direction, just like all the other cars I have owned. But when I try to spin the left wheel, the right wheel stays stationary. I started the car and put it in first and both of the wheels were moving. Also the other day when the ground was wet, i could only spin my right tire, not my left. I have heard that sometimes the spider gears will give out in the diffs, what do you think it is?
Last reply by twnygren, -
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I did some searching and couldn't find a solution to this problem. I have a 1971 240Z that I have recently restored. We have had an intermittent problem that has popped up occasionaly since we purchased the car 3 years ago and it continues to this day. It will intermitently run extreamely rough and virtually stall when hot. Its is like its dropping one carb. I dissassembled and cleaned the SU carbs per the Z therapy video (several years ago). The fuel tank has been cleaned and treated with POR. The fuel lines have been cleaned, flushed and all of the hoses replaced. I added an electric fuel pump from an RX7 in the back and replaced the mechanical fuel pump up front with a…
Last reply by whamo, -
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Hey guys, First things first, 72 240, on startup after sitting for a few hours I get this knocking sound for approximately 4 seconds. It sounds to me like the knock you get from the oil pump when you change the oil in a small block chevy as it fills the oil filter. I just bought the car and the PO changed the oil just before I got it, I don't know what weight he put back in it. It holds about 45-55psi going down the road and about 10psi after an extended idle (about 5-10 minutes). I am going to do an oil change again and maybe go with 15-50 or 10-30 and see if that helps. My question is do the oil pumps in these engines have a check valve to keep some oil at the pump…
Last reply by sblake01, -
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I was thinking of rebuilding and have some questions that rise from lack of experience. Is it possible and or wise to pull the engine and have a machine shop perform the rebuild and then I just reinstall it. This would be both bottom and top end. In addition, since I am rebuilding I was considering beefing it up by boring etc. Would the machine shop know what must be done or do I need to have some motor knowledge to advise them. I would like to max it out. It is a 1974 260 so my understanding is the car already has the stroke so maybe a bore and domed pistons, beefy cam...??? Any suggestions would be appreciated Oh by the way I am in Arizona so any suggestions as to a lo…
Last reply by Chino 240Z, -
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ok so i bought a q45 vlsd r200 for my 73 240 z, what would i need to complete the swap.
Last reply by =Enigma=, -
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What year was the P-79 head first installed on the 280's and what year was the last?
Last reply by Diseazd, -
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I was wondering if anyone could help. I recently starting thinking about changing over to an electronic ignition. My question is what is the difference between XR700 Electronic Ignition System and PerTronix Ignition Kit and which is a better way for me to go. The two that I have seen are very similar in price so that is not a factor. thx in advance for your help.
Last reply by sblake01, -
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I am pretty sure the founder got out 2 years ago. http://liquitec.gsdesign.com/auctions/crane-cams-inc/category.php
Last reply by bigoak, -
My dad,s '78 280 won't pass idle test for smog. Co's too high. Lean's out just fine at higher rpm. Replaced injector's, tried different air flow meter's, computer's, checked harness and reading's are fine. Any idea's?
Last reply by senderc, -
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Anyone got information or documentation on the casting codes on the pistons and/or rods from the '70-83 Z car engines? I need to identify some parts. Also while I'm asking, was the bore the same for all of the above years and only the stroke and/or rod length changed?
Last reply by blue 72, -
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My 76 280 has this motor in it... L28 187452. What year would this motor be from? Its not the original motor. Im guessin like 77 or 78. Is there a site that I could use to find this info?
Last reply by Tim 76' 280Z,
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