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Valves for A series race engine |
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Home away from home  
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2003/10/23 9:09
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I need to replace valves in my race engine. Currently has Stainless 40mm Inlet and 33mm Exhaust. Stems are 8mm but are 'wasted' down to about 6mm where they pass through the ports.
One of the Inlet valve heads broke up so I want to replace them all.
I bought the engine already built up but was told the valves were VW.
Am keen to hear all suggestions for replacements or what others have used?
GW
Posted on: 2009/11/9 10:42
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1200 Coupe Racecar, mid-mount A13, C/R 60L g'box.
Previous "Datsuns": B310 sedan worked A13. B310 coupe A14/dogleg 5-spd. 260C sedan, L26, 3-spd man col chng, 6-seater great tow car!. VL wagon, RB30, 5-spd. Nissan Bluebird SSS U13, SR20, 5-spd.[i...
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Re: L18 Conversion done, BUT couple of issues... |
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Home away from home Joined:
2003/10/23 9:09
From NZ
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In your diagram you have the signal feed to the tacho to the + side of the coil. It should be connected to the - side of the coil.
To work, tachos need:
1) "-" side of coil for rpm pulse/feed;
2) earth;
3) "+" power feed usually via ign switch (although I have a Stewart Warner after market tacho which doesn't require a power feed. It just has earth and "-" side of coil)
The wire to the + side of the coil is simply the coils power feed from the + side of the battery/ignition. By wiring as per the diagram you essentially just have both sides of the coil connected to the + side of the battery.
Posted on: 2009/11/8 9:26
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1200 Coupe Racecar, mid-mount A13, C/R 60L g'box.
Previous "Datsuns": B310 sedan worked A13. B310 coupe A14/dogleg 5-spd. 260C sedan, L26, 3-spd man col chng, 6-seater great tow car!. VL wagon, RB30, 5-spd. Nissan Bluebird SSS U13, SR20, 5-spd.[i...
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Re: N14-15 Radiator swap - Done :-D |
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Home away from home Joined:
2003/10/23 9:09
From NZ
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Quote:
NHB006 wrote:
Did the swap on one of the utes today, I got a brand new n14-15 2ltr Radiator
What Make/Model car is an N14-15?
Posted on: 2009/11/7 0:48
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1200 Coupe Racecar, mid-mount A13, C/R 60L g'box.
Previous "Datsuns": B310 sedan worked A13. B310 coupe A14/dogleg 5-spd. 260C sedan, L26, 3-spd man col chng, 6-seater great tow car!. VL wagon, RB30, 5-spd. Nissan Bluebird SSS U13, SR20, 5-spd.[i...
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Re: N14-15 Radiator swap - Done :-D |
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Home away from home Joined:
2003/10/23 9:09
From NZ
Group:
Registered Users
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I see the top hose is on the correct side for A series engine. What side is the lower hose?
Posted on: 2009/11/3 8:36
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1200 Coupe Racecar, mid-mount A13, C/R 60L g'box.
Previous "Datsuns": B310 sedan worked A13. B310 coupe A14/dogleg 5-spd. 260C sedan, L26, 3-spd man col chng, 6-seater great tow car!. VL wagon, RB30, 5-spd. Nissan Bluebird SSS U13, SR20, 5-spd.[i...
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Re: A14 crank into a12 |
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Home away from home Joined:
2003/10/23 9:09
From NZ
Group:
Registered Users
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Quote:
A14force wrote: ...You spoke of using a 77mm bore D/man. I had thought that 76 was the limit of an A12 block?
Factory offered 76.8mm competition pistons for 1298cc capacity. 78mm bore isn't unheard of (but probably getting risky maximum) for 1340cc.
Posted on: 2009/11/2 10:28
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1200 Coupe Racecar, mid-mount A13, C/R 60L g'box.
Previous "Datsuns": B310 sedan worked A13. B310 coupe A14/dogleg 5-spd. 260C sedan, L26, 3-spd man col chng, 6-seater great tow car!. VL wagon, RB30, 5-spd. Nissan Bluebird SSS U13, SR20, 5-spd.[i...
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Re: A14 crank into a12 |
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Home away from home Joined:
2003/10/23 9:09
From NZ
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Quote:
Dodgeman wrote: British cars are [or were] taxed on what they called 'RAC Horsepower rating' [Rediculous Auto Club] This number had absolutely nothing to do with the engines ability to perform work [power] but was in fact a mathematical formula that used bore size as part of the equasion. The bigger the bore, the higher the RAC rating & the higher the tax, which was paid each year as part of the registration fee.
In order to sell cars, British makers needed to keep the taxable power[?] of their engines as low as possible, so small bores & long strokes were the order of the day.
This explains my 1964 Triumph Vitesse engine: 1600cc 6 cylinder (sleeved down 2000cc engine).
Posted on: 2009/11/1 12:15
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1200 Coupe Racecar, mid-mount A13, C/R 60L g'box.
Previous "Datsuns": B310 sedan worked A13. B310 coupe A14/dogleg 5-spd. 260C sedan, L26, 3-spd man col chng, 6-seater great tow car!. VL wagon, RB30, 5-spd. Nissan Bluebird SSS U13, SR20, 5-spd.[i...
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Re: gx carbies |
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Home away from home Joined:
2003/10/23 9:09
From NZ
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Quote:
1200rallycar wrote:
i say go gx especially if you dont wont the hassel of re-tuning, webers are shocking for that
Not sure why there is a misconception that Webers (and Dellortos) go out of tune. They are fixed jet and the only thing adjustable on them is the idle mixture and balance (when two or more carbs), and these only change if using a screw-driver). Properly set up Webers/Dellortos, especially on a 'mild' engine, are very tractable and relatively economical (though unlikely to be as economical as "SU" type carbs. That said, no carbs can ever be tuned perfectly across the rev and load range like EFI. With a $1k budget I'd go Side-Drafts everytime. Gives plenty of scope for further tuning in future too. GW
Posted on: 2009/10/20 10:14
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1200 Coupe Racecar, mid-mount A13, C/R 60L g'box.
Previous "Datsuns": B310 sedan worked A13. B310 coupe A14/dogleg 5-spd. 260C sedan, L26, 3-spd man col chng, 6-seater great tow car!. VL wagon, RB30, 5-spd. Nissan Bluebird SSS U13, SR20, 5-spd.[i...
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Re: for the play boys, bmw head conversion on a12 |
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Home away from home Joined:
2003/10/23 9:09
From NZ
Group:
Registered Users
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Quote:
LOWTECH wrote:
It was my understanding that the Nissan A series Engine more closely resembles an MG'B' Engine, not a Mini 'A' series...
! That's disgusting talk - wash your mouth out!! Similarities: 4 cylinders, pushrods, pretty much The End. Differences (some): Datsun has steel crank, steel rods, alloy head, inclined valves, 8 ports, Over-square (A12), doesn't leak, etc, etc, etc, etc, etc, etc, etc, etc.
Posted on: 2009/10/19 11:43
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1200 Coupe Racecar, mid-mount A13, C/R 60L g'box.
Previous "Datsuns": B310 sedan worked A13. B310 coupe A14/dogleg 5-spd. 260C sedan, L26, 3-spd man col chng, 6-seater great tow car!. VL wagon, RB30, 5-spd. Nissan Bluebird SSS U13, SR20, 5-spd.[i...
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Re: Toyota fly by wire kills 4 people due to wrong mat |
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Home away from home Joined:
2003/10/23 9:09
From NZ
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The comments under that article are priceless! Great to see some people have commonsense and a sense of humour.
Posted on: 2009/10/7 10:24
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1200 Coupe Racecar, mid-mount A13, C/R 60L g'box.
Previous "Datsuns": B310 sedan worked A13. B310 coupe A14/dogleg 5-spd. 260C sedan, L26, 3-spd man col chng, 6-seater great tow car!. VL wagon, RB30, 5-spd. Nissan Bluebird SSS U13, SR20, 5-spd.[i...
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Re: A12GX Head - Su's - Lightened Flywheel |
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Home away from home Joined:
2003/10/23 9:09
From NZ
Group:
Registered Users
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Regarding the dyno printout: why are there two different sets of power and torque readings (and at different - presumably 'peak' - rpms)?
Posted on: 2009/9/29 10:49
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1200 Coupe Racecar, mid-mount A13, C/R 60L g'box.
Previous "Datsuns": B310 sedan worked A13. B310 coupe A14/dogleg 5-spd. 260C sedan, L26, 3-spd man col chng, 6-seater great tow car!. VL wagon, RB30, 5-spd. Nissan Bluebird SSS U13, SR20, 5-spd.[i...
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