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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I am looking for a nissan motor builder who I think is based in california. I saw the name at some point in the forums and have yet to find the name of the conpamy or there web site. I remember the had vast web site specializing in Nissan and built a few different configs on the "L" type engine. Thanks
Last reply by dero, -
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In reply to an inquiry on the compression ratio of an L28 with dished pistons, N-42, .060 surface, etc. I was troubled with not being able to reply with any accuracy. I work daily, machining, adjusting, and setting up compression in racing engines, and this was my response. Hopefully, it might shed some light on a problem encountered at some time by most Z rebuilders. Ed, You have too many unknowns in your engine to nail down a C.R. within half a point. For starters, how many cc's are contained within the dish of the piston? More important is the combustion chamber. If it was brand new, you could go with factory cc info, but a used head may have had a valve job or two, sl…
Last reply by Phred, -
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my '72 is still in the tuning stages but I can't leave it running long b/c it'll sit right between the 120 and 250 on the temp gauge but after driving it around in the parking lot to check the carbs ill leave it at idle for maybe 30 sec and then the needle skyrockets to 250 and I shut it off immediately.....Also I've checked the hose that runs from the thermostat and the radiator while it idles and the flow is very low or not at all....So far I've changed the thermostat and flushed the system.....i dunno whats blocking it or might be the pump....any of you have this problem?
Last reply by Daniel, -
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What is the differance between the resistor type spark plug and the non-resistor type? I went to the parts store and they gave me resistor type spark plugs cause they were all they had, I thought that my car called for non-resistor type. I told the parts guy and he told me they fit and will work better. I do not believe him. I didn't buy them, but does it matter?
Last reply by beandip, -
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There does not seem to be tested and confirmed numbers that I was able to find. I have seen the chart at http://www.geocities.com/MotorCity/2824/heads.html but it does not have the combination I was looking for. Does anyone know factually what the compression ratio is for an F54 block with flat-top pistons and a P90 head combination is?
Last reply by 2ManyZs, -
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How do I tell if it's working or not? It's definitely not seized--how hot do I need the engine to get to make sure it engages? Currently, if I'm just sitting in traffic, or stop and go freeway stuff, the temp gauge gets to the hot side. Is it just heat from the exhaust manifold, or is the fan not doing its job? As soon as I'm up to a good speed, the car cools right down, so as long as there's air flowing through the radiator, the cooling system works fine. I've also gone to the the 160 degree thermostat. Thanks in advance, Chris
Last reply by santamaus, -
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I'd like to get some input about this. It seems to me, that boring out the cylinders to take larger pistons while keeping the stock stroke would allow the engine to spin faster more easily; since it would create even more of an oversquare condition. If any of you guys have done this, let me know what you observed. Thanks.
Last reply by Brett240, -
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I'm almost ready to put the head back on my original engine, but I was wondering what, if any, "form-a-gasket" type stuff I should use while installing the gasket. I'll be using a Fel-pro head gasket. No mods made to engine other than general clean-up and repair. When I pulled it apart, there was a silvery residue on the block and the head, but I don't what it was. Also, the new gasket says to use no sealant, but the old gasket was a fel-pro also and it obviously had something on it. I'm pretty sure this motor was never before taken apart, either. PO before me had the car since '72. Any ideas, suggestions?
Last reply by TKR514, -
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i was wondering if the zxt's afm would work on my 78 280z?
Last reply by Darylick, -
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Anybody ever heard of this company or know anyone who has bought one of their motors? They seem pretty good and have a decent warranty. Apparently you can get rebuilt L28's from them. http://www.rebuiltcarengines.com
Last reply by Cary67, -
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Hi all, I have removed all the screws, given the thing a good few hard wacks with a block of wood and a hammer and still it wont come off.. Haynes says not to use a screwdriver to prise it off, so I have run out of ideas.. Thanks...
Last reply by 24OZ, -
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Would a Supra Twin Turbo 2jzgte fit in a 260z ? What would need upgrading ? Im guessing a 260z with a 2jzgte would be a perfect combination, or is the soarer twin turbo a much better choice ? Comments would be much appreciated.
Last reply by Zedrally,
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