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cheater_5
Re: Datsun A6 engine - 600cc
#61
No life (a.k.a. DattoMaster)
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would have a huge cool factor with a tiny turbo haha. Could power the blender

Posted on: 2008/4/28 9:32
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datsunsunny
Re: Datsun A6 engine - 600cc
#60
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good job on that. the pics where amazing but the video made it all. i think that putt-putt is more depending on the silencer more than the engine since when it increase velocity it keep that putt putt. i ve seen 2 piston engines that do not make that putt-putt sound. what do you think??

Posted on: 2008/4/28 9:08
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ddgonzal
Re: Datsun A6 engine - 600cc
#59
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It's even tinier in film!

The one-minute video is a good one. A real putt-putt engine.

Posted on: 2008/4/28 7:43
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mikko1200
Re: Datsun A6 engine - 600cc
#58
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Here's the video:
http://www.youtube.com/user/Homerdiesel

Posted on: 2008/4/28 7:24
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D
Re: Datsun A6 engine - 600cc
#57
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Got back yesterday from Japan and after driving many 660cc kei cars of 960-1050kg, I can say that this engine with bigger bores will be sufficient for todays petrol prices. Especially with a turbo.

Id love a V4 from a Z V6 but doing twin cam heads would be a nightmare.

I heard of some place in Camberra Berkin engines? that used to do speedway v8 alloy engines into v4 conversions when the v8 where damaged.

Posted on: 2008/4/11 5:53
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kululadotgroen
Re: Datsun A6 engine - 600cc
#56
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Quote:

Dodgeman wrote:

These engines use No. 3 main bearing to handle the end thrust loads [crank end float] so it works as a 2 cylinder, but imposes yet another engineering problem as a single.

As for engine balance as a twin, the primary balance would be OK [rising piston counterbalances falling one] but it would have a rocking couple. As No.1 piston reaches TDC it tries to pull the front of the engine up, while at the same time, No. 2 piston reaches BDC trying to push the back of the engine down [inertia at work here] so the engine tries to tip back. This process is reversed in the next half rotation.
At opreational speeds the engine will not actually rock, but there will be a vibrational wave in this direction.
Since this engine is mounted on the sides, giving it a lateral pivot point, this condition could be amplified to some degree. If it was 3 point mounted the vibration may well be less.

In the original 4 cylinder configuration, the center cylinders are counterbalanced by the end ones for primary balance, & no rocking couple exists as the rocking couple of each pair of end cylinders is opposite to, & therefore equalises, the other end.

Coming up with a solution to the dipstick problem would be the least of your problems in a single cylinder configuration.


Yes the vibration thing on the 2 cylinder would be a problem as you stated. i don't think the end float would be such a big problem, if you look at the pictures of a crank, there is more than enough space to just move the no3 main forward to still contain the thrust washers. The only real problem I can see, is that you migh not have enough meat on the rear part of the no 2 main to machine the flange out of for the flywheel to mount to. Luckily we have a steel crank here, so welding would be in order...

Posted on: 2008/4/9 8:42
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figueiredo
Re: Datsun A6 engine - 600cc
#55
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hi.just look the pictures and coments and i got this new idea!!
insted of cuting an A12 block and make a 2 stroke engine whit 600cc,just cut 3 and join together to make and A12 whit 1800cc and 6 stroke??? prety cool.
dont need any more an L16 to get more power!!
after see this great job of weelding and machinering ,this new idea may be possible.

coments please.





sorry my poor english

Posted on: 2008/4/8 23:32
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Dodgeman
Re: Datsun A6 engine - 600cc
#54
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Quote:

kululadotgroen wrote:
I can't see why it should be unbalanced, appart from a lumpy idle. There are still two cylinders opposing each other, and balancing thing out a bit. Now someone just has to go try the A3 engine...

These engines use No. 3 main bearing to handle the end thrust loads [crank end float] so it works as a 2 cylinder, but imposes yet another engineering problem as a single.

As for engine balance as a twin, the primary balance would be OK [rising piston counterbalances falling one] but it would have a rocking couple. As No.1 piston reaches TDC it tries to pull the front of the engine up, while at the same time, No. 2 piston reaches BDC trying to push the back of the engine down [inertia at work here] so the engine tries to tip back. This process is reversed in the next half rotation.
At opreational speeds the engine will not actually rock, but there will be a vibrational wave in this direction.
Since this engine is mounted on the sides, giving it a lateral pivot point, this condition could be amplified to some degree. If it was 3 point mounted the vibration may well be less.

In the original 4 cylinder configuration, the center cylinders are counterbalanced by the end ones for primary balance, & no rocking couple exists as the rocking couple of each pair of end cylinders is opposite to, & therefore equalises, the other end.

Coming up with a solution to the dipstick problem would be the least of your problems in a single cylinder configuration.

Posted on: 2008/4/8 13:59
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datsunsunny
Re: Datsun A6 engine - 600cc
#53
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u can solve the problem of the dipstick by making a side glass in the sump or a high a low level indicator hole like the one in the gearbox for an a3 engine

Posted on: 2008/4/8 12:47
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kululadotgroen
Re: Datsun A6 engine - 600cc
#52
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I can't see why it should be unbalanced, appart from a lumpy idle. There are still two cylinders opposing each other, and balancing thing out a bit. Now someone just has to go try the A3 engine...

EDIT Looking at it, the only problem would be that the oil feed for the head will be cut of. But I guess one could simply drill through the block into the main channel below, and then into the head, do a shimmy on the middle headbolt, problem solved. Your oil pump should still be ok, but you might have to come up with some creative plan for the dip stick, the hole to that will be cut of as well. Furthermore one would probably have to add some counter weights to the crank to get it not to shake itself to pieces. Other problems might be the ignition, but filing off some of the trigger lobes should solve that.

Mmmm, my son's go-kart needs an engine, and I always have some time to kill...

If someone knows of a similar A12 engine lying around, let me know...

Posted on: 2008/4/8 12:26
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1200 GX Sedan
New(being installed)
4AGE 20V NA

Old
4AGZE 16V turbo
196.5KW/283NM
800m - 200km/h
400m - 12.3s
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