Engine & Drivetrain

5,574 topics in this forum

1. 

   Head porting

   February 2, 2004 by Ed

   • 2 replies
   • 2.1k views

   I just got my head back from the machine shop. They resurfaced it and installed new hardened intake seats. Now, I want to match port the intake with the head, smooth out the transition between the valve seat and the port and do a general smoothing. I will include pictures of my progress. Here is a picture of the three angle job on the seat. I'm not really happy with the transition of the port to the seat so here goes.

   

   Last reply by Ed, February 5, 2004
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3. 

   head porting

   February 4, 2004 by mayolives

   • 2 replies
   • 1.4k views

   I have searched but can't find a good "How To" post for performing porting work on a head. Where could I find this info?...Thanks, ...mayolives

   

   Last reply by beandip, February 5, 2004
4. 

   Vacume Diafram 74 260z to much for 72 carbs?

   February 4, 2004 by Xargon321

   • 0 replies
   • 1.1k views

   my vacume advance dont work on my 74 260 its retro fitted with 72 round tops, in the haynes manual it says that the 72 vac adv starts at 3.94 in Hg and the 74 vac adv starts 11.8 in Hg now can the 72 carb pull that vacume should i change the diafram to a 72??

   

   Last reply by Xargon321, February 4, 2004
5. 

   Machine Shop Question

   February 3, 2004 by mayolives

   • 4 replies
   • 1.8k views

   I am in the process of building a turbo engine with an F54 block and a P90 head. After searching/reading many good pages of information on this site, my game plan is to have 300RWH. I have talked with Rebello Racing and Sunbelt Performance about doing the headwork. I'm sure that both shops can do a real good job but both are very expensive. Can anyone recommend other shops that I could talk with that do good work and might be less expensive? I live in South Carolina and I would like to use a shop in the Southeast. Thanks for any light you can shed on the subject. .....mayolives (mayolives@aol.com)

   

   Last reply by Zrush, February 3, 2004
6. 

   Ticking noise

   January 28, 2004 by tanny

   • 7 replies
   • 1.5k views

   How can you distinguish between a valve train ticking noise and an exhaust leak ticking noise? Coming from rear of engine. Wasn't able to isolate with a stethoscope, my nose, or valve adjustment. Very clear ticking noise at at idle, not distinguishable at speed. Thanks, Victor.

   

   Last reply by tanny, February 3, 2004
7. 

   All of the sudden...

   January 28, 2004 by Tourniqet

   • 2 replies
   • 1.3k views

   Hey guys, All of the sudden my car started running horrible... It was right after I thought I was going to adjust the valves, and got the cover off and then realized i did not have the right wrenches. Also I put on an adjustable fuel regulator. But I tested it after that and It ran GREAT! It did not run out of fuel at 60 anymore... One day it was running fine, and then when i was driving the engine started getting fuzzy and weak like it was starved for something, very aparent too. I thought it was the fuel, so I adjusted that, no luck, carbs... no luck. And then I realized I had my choke still on:stupid: But only one of the chokes work on my DGV's (thats #4 on the …

   

   Last reply by Tourniqet, February 2, 2004
8. 

   "New" Green 73

   February 1, 2004 by 2Forty

   • 3 replies
   • 1.7k views

   I picked up a Green 73 on Ebay 2 weeks ago. My father-in-law flew to Little Rock to pick it up and drove ot home for me. "No rust" is what the ad said and "No Rust" is what I found. Also no carpeting, just rubber mats. Has a Griffith aluminum radiator with electric fan. Alternator bearing went out in New Mexico and Don removed the alt fan and then shimmed and bolted pulley back on. Replaced broken driver's side exterior door handle yesterday and will attempt alternator and radiator back to stock if Superbowl doesn't interfer. Failed Arizona emission test, runs richer than Bill Gates. Has flat tops. But I have a Z to drive.

   

   Last reply by 2Forty, February 2, 2004
9. 

   280zx front pulley: turf or keep?

   January 28, 2004 by speedyblue

   • 1 reply
   • 1k views

   I'm swapping an L28 straight from a 280zxinto my 240Z. Should I swap the front engine pulley with the 240z one or just keep the 280zx one? The 280zx one seems chunkier. How do they hold at high revs?(7000rpm only, not trying to kill the engine here) I have a vauge memory of someone saying they don't cope with the revs. Thanks Scott

   

   Last reply by Ed, February 2, 2004
10. 

    280C Engine

    January 16, 2004 by biker

    • 8 replies
    • 1.7k views

    I have been offered a motor out of a 280C which was a Datsun Sedan around the early 80's vintage. Can this motor be done up for maximum horsepower for a Z. Thanks Biker

    

    Last reply by JMT240KGTR, February 2, 2004
11. 

    Aviation Fuel 1 2

    January 19, 2004 by Zrush

    • 15 replies
    • 2.4k views

    Whats anybodys opinion on running aviation fuel in their Z. The local airport (not a major airport) has fuel with a 110-112 octane rating. Would you mix half with pump gas (93 octane) or would you run a tank full of 110 octane every once in a while. I've always heard that you should run the highest octane available from the pump in our Z cars.

    

    Last reply by TomoHawk, February 1, 2004
12. 

    L28 engine stats...

    January 28, 2004 by mellow

    • 9 replies
    • 5.2k views

    Hey Zedheads! i need a few stats for an L28 injected engine... what i need are Torque settings for: *Big end bearings *Mains *Head bolts also i need measurements for: *Ring end gap *Bearing to journal clearance thanks once again, mellow:dead:

    

    Last reply by Ed, February 1, 2004
13. 

    Diesel Z

    January 30, 2004 by NickF

    • 3 replies
    • 1.3k views

    www.veggicar.com

    

    Last reply by seerex, January 31, 2004