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Re: Is my bluebird diff a LSD? |
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No life (a.k.a. DattoMaster) 
Joined: 2003/6/27 14:53
From Southern Tablelands N.S.W. Australia
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You are correct when you say that once the drag of the clutches in an LSD is overcome, then the oposite wheel will turn the opposite way if the pinion is prevented from turning as this type is really a 'spin resistant' diff. However if you can do this by hand, then the clutch packs are totally shot & you effectively have an open diff.
Posted on: 2010/5/30 0:49
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Re: What is YOUR favourite 1000 Model? 4-Door, 2-Door, Coupe, Ute, Wagon |
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No life (a.k.a. DattoMaster) 
Joined: 2003/6/27 14:53
From Southern Tablelands N.S.W. Australia
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So it's unanimous then. The KB10, the car you always wanted, is the sexiest, bestest, horniest, classiest, most desirable & incredibly fabulous Datsun model ever built & all other makes & models pale into insignificance beside it. Yep, I thought that's what everybody would say. KB10, it's no ordinary car. 
Posted on: 2010/5/30 0:31
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Re: rocker shaft bolts |
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No life (a.k.a. DattoMaster) 
Joined: 2003/6/27 14:53
From Southern Tablelands N.S.W. Australia
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LOL, I loved your analogy. I loved it because it brings into crystal clear focus the stupidity of this action.
I wonder what the fine is for an act of violence in the street. I bet it isn't $1000, yet these scumbags want to impose this fine for using a fastener with a nut on top instead of a hex head.
What ever happened to the good old Aussie ethos of giving a bloke a 'fair go'
Posted on: 2010/5/30 0:20
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Re: anti-dieseling valve |
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No life (a.k.a. DattoMaster) 
Joined: 2003/6/27 14:53
From Southern Tablelands N.S.W. Australia
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Quote: davidbil wrote: while i was working on my car, i had the carb off the inlet and the fuel line just hanging over the inlet a dumb friend of mine said fire her up i want to see what happens, while me trying to convince him it wont fire up, it will just stall i cranked the engine and ended up with a huge fire out of the inlet with the motor revs at the limit and no way to turn the engine off
No way to stop the engine? What happened? Your mate, who had been within arms reach of the ignition so he could fire it up ran away & left you with it? He locked the keys in the car & nobody could reach the ignition switch? The ignition switch jammed in the ON position & wouldn't turn off? There was a short in the ignition circuit & the ignition was permanantly ON? Everybody was dumbstruck to the point of being imobilised? How did it end? Did the engine self destruct as it was reving "at the limit" & there was NO WAY you could stop it, or did the car catch fire & burn to the ground Somehow I think there is a bit more to the story than this
Posted on: 2010/5/30 0:04
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Re: A14 carby? |
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No life (a.k.a. DattoMaster) 
Joined: 2003/6/27 14:53
From Southern Tablelands N.S.W. Australia
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Quote: estyre wrote: all the A series carbys up to A14 are the same
The carburettors are similar, but they are NOT the same. Anti dieseling solinoid in some, but not others, different methods of mounting the air cleaner, auto choke in some, but not others, different throat sizes, different polution control vacuum fittings, different jet sizes & other minor changes to suit specific applications. Pretty much all of them will fit all of the other engines but be aware that performance may not be as good as you expect unless the mixture is checked with an exhaust gas analyser on a dyno or road test & any corrections that might be needed are done. I used an import engine's carb from an unknown A14 on my wife's improved performance 1200 engine. She loved the auto choke & I loved the peppy performance that the slightly larger throats permitted, but I had it checked with the meter before turning her loose with it.
Posted on: 2010/5/29 23:51
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Re: A - series race parts |
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No life (a.k.a. DattoMaster) 
Joined: 2003/6/27 14:53
From Southern Tablelands N.S.W. Australia
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The JB semi roller rocker is a undoubtedly a good product, but hardly a major step forward in rocker arm design.
The YT 'full roller' rockers do not have that drag inducing bush which is an effective 'cheap' means to an end. The roller bearings in the YT rockers all but eliminate friction from this source.
If you're going to go roller rockers, then go all the way otherwise it's like trying to have s-x with your d--k only half way in. [semi s-x?]
For the record, I too have YT roller rockers & they didn't cost me anywhere near $1,000. I bought them after weighing up the differences against the semi rollers & decided that if I'm in for a penny, then I'm in for a pound..
Posted on: 2010/5/27 14:28
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Re: anti-dieseling valve |
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No life (a.k.a. DattoMaster) 
Joined: 2003/6/27 14:53
From Southern Tablelands N.S.W. Australia
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The anti dieseling device is a solenoid so it needs power to operate. It needs this power whenever the ignition id 'ON' but at no other time.
The purpose of this device is to allow a spring loaded 'needle' to plug the idle circuit whenever the engine is turned off. Even if the plugs are glowing white hot, this device cuts the flow of idle fuel to the engine & it can not 'run-on' without fuel.
It also prevents unburned hydrocarbons from entering the exhaust system, to be ejected into the atmosphere on the next startup.
If it is disconnected, the idle circuit is closed & it is necessary to increase the idle speed so that the engine can draw fuel from the transition port. This fuel is calibrated to be mixed with the idle fuel for correct mixture, but without the additional fuel from the idle port it is running lean, & therefore, badly.
I have been using a stock carb on my 1200 for years & I love it. It is correctly sized for smooth running, great economy, & peppy performance without being over the top.
Those clever little Datsun engineers definately knew what they were doing when they designed these.
Posted on: 2010/5/27 14:13
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Re: The super strong A-series... FAIL |
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No life (a.k.a. DattoMaster) 
Joined: 2003/6/27 14:53
From Southern Tablelands N.S.W. Australia
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Quote: Rezlo wrote: Either way, im going to the A14 block and crank for 2011 rules, with a longer rod and shorter stroke = better in my opinion, maybe not for street and bottom end torque but at 8000rpm having less rod angle = win
Ummmmm, need a little clarification here. You will be using the A14 block [taller deck height & bigger bore, this can only be good] & the A14 crank [77mm stroke, also good] So where does the shorter stroke come in? Shorter than what? If you use a longer rod, you will need a piston with a shorter deck height, possibly an A15 piston, but where will you source the longer rod?
Posted on: 2010/5/27 14:00
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Re: a12 head or a14? |
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No life (a.k.a. DattoMaster) 
Joined: 2003/6/27 14:53
From Southern Tablelands N.S.W. Australia
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A14 heads that were used in Aussie models had an oval port shape.
Have a look at your engine number, it's possible that you actually have an A14 engine.
Posted on: 2010/5/17 3:08
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Re: PVC valve help |
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No life (a.k.a. DattoMaster) 
Joined: 2003/6/27 14:53
From Southern Tablelands N.S.W. Australia
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Quote: unfamilia wrote: should fit round port, just dont hook up the pcv, the a10's just vented to the ground anyway
There's a good reason why PCV systems have been made a legal requirement & another good reason why it's a good idea anyway. Back in the 'good ol' days' when nobody could even spell PCV, engines would build up pollutants in the oil, such as water [a by product of combustion] & sulphur which is a component of the crude oil from which petrol is made. These two combine to form a mild sulphuric acid which doesn't do bearings or pistons much good. Crankcase sludge was also a big problem. Engine service life was 100,000 miles [160,000k] ....... if you were lucky. With a PCV system & modern oils engine life can be three times this figure & crankcase sludge is a thing of the past. When draught tube crankcase ventilation was the only thing around a great deal of oil in the form of micro droplets. This oil was sucked into the road surface when the weather was dry, but with a light fall of rain [drizzle was the worse] the oil would float to the surface & form what was widely known as 'summer ice' & it was responsible for far more vechicle accidents, injuries & even deaths that should ever have occured. This, along with pollution control reasons, is why the PCV ststem is a legal requirement. Stay clean, & stay legal, stay smart & use a PCV system.
Posted on: 2010/5/17 3:04
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