Blue top vs Silver 582

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DieselFan
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Blue top vs Silver 582

Postby DieselFan » Fri Nov 03, 2006 2:40 pm

Whats the diff?
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Postby Morph » Fri Nov 03, 2006 4:16 pm

The 582/99 or blue head mainly attempts to fix a cooling system deficiancy
by introducing a bypass - this in itself is a great improvement over the old
582 and seems to eliminate the possibility of cold seizures that so much
haunted the old 582.
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Postby DarkHelmet » Fri Nov 03, 2006 4:17 pm

The obvious difference is the blue vs silver top of the older model ;)

I recall it had to do with better cooling but not the correct details.

From http://www.durham-microlights.co.uk/technical_tips.htm nogal by our own Rainier Lamers - just search for 582/99
The 582/99 or blue head mainly attempts to fix a cooling system deficiancy by introducing a bypass - this in itself is a great improvement over the old 582 and seems to eliminate the possibility of cold seizures that so much haunted the old 582.
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Postby DieselFan » Fri Nov 03, 2006 9:46 pm

Thanks for prompt help as usual!
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Postby Ian » Fri Nov 03, 2006 10:08 pm

Doesn't the Blue top have a bit more power as well ?
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Postby Duck Rogers » Fri Nov 03, 2006 11:26 pm

Doesn't the Blue top have a bit more power as well ?
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Postby DieselFan » Sat Nov 04, 2006 12:12 am

Ian wrote:Doesn't the Blue top have a bit more power as well ?
The article does mention "mainly", so I wonder what else?
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converting a silvertop

Postby Spongebob » Tue Nov 07, 2006 8:31 pm

Would it be possible to convert a silver top to a blue top? If so, is it worth it?
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Re: converting a silvertop

Postby Morph » Tue Nov 07, 2006 9:39 pm

Spongebob wrote:Would it be possible to convert a silver top to a blue top? If so, is it worth it?
Of course you can :D

Take your silver top to Aviation Engines. Tell them you want a Blue Top. Pay some money, viola :wink: :lol: 8)
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Postby RV4ker (RIP) » Tue Nov 07, 2006 10:54 pm

Is always this option :twisted: :twisted: :twisted: :twisted:



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Postby John Young » Wed Nov 08, 2006 7:34 pm

RV4ker wrote:Is always this option :twisted: :twisted: :twisted: :twisted:
RV – you are unique – glad they broke the mould. Gee, imagine 2 of you !! :lol: :lol:

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Postby RV4ker (RIP) » Wed Nov 08, 2006 7:46 pm

:oops: :oops: :oops: :oops: :oops:
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Postby Spongebob » Wed Nov 08, 2006 9:56 pm

RV, my top nearly split on seeing your reply, what shall I say except, we are not worthy o great orator of the electromagnetic waves :D :D :oops:
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Postby Morph » Wed Nov 08, 2006 11:32 pm

What scares me is the colour match is perfect. I sense this has been done before :wink: :lol:
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Postby Boet » Sun Nov 12, 2006 8:34 pm

The 582 / 99 ( Blue top ) has a by-pass hose from the top of the engine to the back of the water pump. When you start the mod 99 the water FLOWS around, making for more EVEN and quicker heating up, thereby largely elimanating the chances of cold seizure. With the old mod 90 (Silver top ) there is no by-pass. therefore, untill the thermostat opens, all the water pump did, was to cavitate in water that was not going anywhere.

While on the topic of cold seizures, a question I have to answer frequently. When you fire up a COLD engine, do not increase power too fast. The piston is made of aluminium. The cyl-bore is cast-iron. If you hammer a cold engine, the piston heats up much faster than the cylinder bore. The piston expands and gets too "big" for the "colder" cylinder, and this leaves no space for the poor piston rings, and too much friction caused by too little clearance then leeds to cylinder / piston seizure. A very expensive little exersize!! :D

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