Engine Mods
Zcar engine modification
32 topics in this forum
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- 4 replies
- 4k views
Last reply by Patcon, -
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- 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
- 3.7k views
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
- 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, -
- 45 replies
- 11.8k views
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, -
- 5 replies
- 4.2k views
Have a fairly low mileage Y70 head/cam assembly on my 240z. It's all stock pretty sure. Stock cam. Don't know much about it but have some info from searches. Came stock on C211's Skylines, Cedric's and who knows what else. Changed the performance quite a bit - torque is strong from 3000 to 4600 rpm. Had it dyno'd, the torque is a straight line rather than a curve but it quits pulling at 5000 rpm. Read somewhere that's what the stock cam does. No plans to ever race it except once a year at the dragstrip. Got a pretty good ET last time, it's quicker than with the previous stock head, but top speed would be lower I expect. Plans for the bottom end are bore the 240 a li…
Last reply by Stanley, -
- 5 replies
- 4.2k views
I have an older 240z engine built up mildly (Cam and valves) but after pulling the head off i can see a few cylinder walls are trash. It has an 83mm bore which from my understanding is stock 2.4l and the options I am seeing is bore it to clean it up and then gain some hp but I would have to but oversized pistons, or if it is possible put the heads on my l28 280z engine and do a rebuilt on it and bore it out a little and do some modifications. I only recently got into the Datsun world so I dont know a whole lot but if you guys have any better ideas I would love to hear them. I am 17 and my 280z is my senior year project.
Last reply by 71Nissan240Z, -
- 3 replies
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I am thinking about boring my 240z engine I have after pulling it apart and seeing piston number 3 is rusted and pitted but everything else seems to be fine. So my thought process is i could get it bored out to 90mm vs the 83 it has now and it would solve the pits on the sleeve problem. Does anyone know any good aftermarket flattop pistons and also oversized or just higher performance valves. and last but not least what am i getting in to if i want to do a bore on it do i have to change heads or can i keep everything else and be fine.
Last reply by TomCrowley, -
- 2 replies
- 3.3k views
1978 280z, cut out filter from insid gas tank, was rusted, any advise on inline filter between gas tank and fuel pump, small glass filters can't handle fuel enjected pressures, also check valve from gas tank to emissions cantainer is rusted open, cannot find replacement anyware, thanks James zdonka@yahoo.com
Last reply by zdonka, -
- 5 replies
- 4.6k views
Your probably all gonna kill me over this:p But I pulled the SU's off my 240z, and put on this Skyline P90 intake on it (I ported the hell outta the intake to match the carb). The carb is a 2 barrel carter I pulled off a dodge 273 and rebuilt. It seems to be running considerably better than my SU's, but with maybe a very slight bit less power. However the SU's could've used a good rebuild, and I'm still tinkering with this setup. Ive still got the choke to hook up and it needs filters and a better fix for a couple of the vacuum lines then Im gonna give it a cold air intake.
Last reply by Stanley, -
- 0 replies
- 2.8k views
Hello, Can anyone give me a list of aftermarket custom crank, cams, piston and head manufactures for L28 motors? Thanks Robert
Last reply by rsperegrin1, -
- 3 replies
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Hey guys I just wanted to share with yall the strokification of my s30. Here’s what’s happened thus far. Took the Datsun Parts LLC stroker to Ericks Racing Engines. There I had them disassemble the block in preparation for balancing, since I heard LLC just slapps their stuff together like that. Lone behold I find dirt under the head gasket (see attached image)!! I’m having Elias Alaniz take care of the porting. He did a baseline run of both my p90 and n42. At low lift the p90 beat the n42, but the same could not be said twards the higher numbers. Ill post a list of values so yall can check em out soon. So far hes pulled off 208 cfm .550 valve lift 28" of H20,…
Last reply by 71Nissan240Z,
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