Engine Mods
Zcar engine modification
32 topics in this forum
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- 1 follower
- 47 replies
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This is my current project - putting a VQ30 DET into a 1974 260z. zcar project This engine is from a 1999 Nissan Cedric. To put this engine in I have had to remove the exhaust which runs behind the engine and the turbo to fit the engine behind the x-member. Then I will have to have new exhaust manifolds made bringing the turbo in front of the motor. The plenum had to be removed because it was too far off the back of the engine, so a new one will have to be made towards the front of the engine. I will have to make a new x-member and modify the engine and transmission mounts. These are the dimensions: From the back of the water pipe at the back of the engine to the front …
Last reply by Patcon, -
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- 45 replies
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Has anyone done this? And what con-rods will I need? The square bore/stroke is just something I want to do. I know there is no replacement for displacement. I know the L28 strokers are more popular. I have a numbers matching 1970 240z, and want to use the block/head that it came with. I, personally, like the thought of a "square" engine, and thusly plan on building this one accordingly. Any insight or advice would be appreciated. My goal is 240rwhp, not sure its it possible, but thats what I am shooting for. Plans include: L24 block with stock 83mm bore, Ported stock head with bigger valves (if possible), LD28 83mm stroke crankshaft (knife edged), 11:1 compression ratio…
Last reply by alternativez, -
- 4 followers
- 24 replies
- 8.2k views
Has anyone eliminated the stock metal fuel rail with a rubber one? If so any pics? My vapor locking issue is really annoying Sent from my iPhone using Classic Zcar Club mobile
Last reply by Zedyone_kenobi, -
- 19 replies
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When we got the engine running the other day I noticed a fairly big oil leak coming from the upper front of the engine, about 1 drop per second, after removing every thing to get a good look I can see a crack that almost circles a flange that holds the front of the head to the timing chain cover. I'm sure this is where the oil leak is coming from. Behind where the crack is, is the timing chain galley, so what are my options here to fix this? Weld it from the outside, try and seal a patch of some kind over it from the inside? I'm willing to try anything before removing the head.
Last reply by Namerow, -
- 3 followers
- 18 replies
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For a great price(a few beers)I have acquired this intake manifold from my friends '76 280z. It was in use before he changed to carbs. He says he bought it from a guy who said he got it from California Datsun. Who knows. What I like about it is it is perfect for deleting all of the rats nest items I plan on deleting along with my engine build. Will the fact that this manifold has capacity to move a higher volume of air affect anything when installing to my P79? I will be using my stock ECM along with stock cam and all EFI componets. Sent from my Coolpad 3310A using Tapatalk
Last reply by SteveJ, -
- 1 follower
- 13 replies
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I am posting this information for reference only. I already sold the Weber carbs with manifold and will be going either Z therapy SUs or Arizona Z 4 Barrel setup. The reason for selling? Just didn't have the skill or motivation to get educated on tuning the Webers. Still up in the air on getting the Top end racing TWM throttle body system. Kinda pricey at 3k minus the ECM. Once I get one of those installed I will get back on the dyno. I think the carbs, canon manifold and the mild porting limited the HP. Did a few chassis dyno runs last month and here is the best pull. 182HP and 189 TQ at max pull at 5800. I also have an O2 wideband installed. The AFR was 13.4…
Last reply by gnosez, -
Hydrogen Z? 1 2
by Mike- 12 replies
- 3.4k views
I ran into a guy today in Corvallis, OR who has a 240z running on Hydrogen. I introduced myself and asked him to come and visit the club. Anyway, the brief conversation I had with him was interesting. He popped his hood and showed me some kind of container that looked like a water filter connected to the intake on the engine. The whole conversation lasted about 5-10 minutes but I would like to know more about this kind of modification. He also mentioned a hydrogen fuel cell in the car. But, I was thinking the whole time this must be some kind of fuel cell technology? Separation of the hydrogen from the oxygen (ie: water car). I don't know much about it, but, when …
Last reply by SteveJ, -
- 12 replies
- 5.1k views
Found the 1999 Clifford catalog, all they had for Datsun's at that time were headers, exhaust systems, and cams. Now they have zip specifically for Datsun.
Last reply by Walter Moore, -
- 11 replies
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Saw this interesting engine bay at Zcon. Don't know much about F.I. but don't think this setup is totally stock.
Last reply by siteunseen, -
- 9 replies
- 3.4k views
:stupid: My Dad has a very nice rebuilt Chevy 400 in his 59 Chevy Apache and he's going to put something else in there, so he said I could have the Chevy 400 engine for free if I wanted it. I currently have a 78 280z and I want to drop a big V8 in there, but I don't really know how much work or money it's going to be. Can someone give me an idea? The real question is, since I likely need a head job on my in-line 6 stock motor that will cost around 700$ (guessing, that's what another guy on the forum paid), should I fix the stock engine or just put the Chevy 400 in there? And after that, my dad says that since the bore is bigger on the 400, there's no room for a water jac…
Last reply by gvincent, -
- 9 replies
- 11.8k views
I have a 77 280z with dual SU carbs. I want to get some more power out if the motor and still drive it daily. I wanted to go to an oversized flat top piston, a shaved .080 P90 head, a stage 3 Schneider cam, a forged crank, and a new header. I was wondering what compression I should expect from the motor and could I still run 91 pump gas? Also will the motor run hot I'm running a 3 row 1 inch core aluminum radiator. Lastly could anyone tell me the HP I expect out if this setup. -Thank you
Last reply by gnosez, -
- 1 follower
- 9 replies
- 7.1k views
does anyone know where i can buy an aftermarket turbo manifold for the L28?
Last reply by JSM,
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