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Blue top vs Silver 582
Posted: Fri Nov 03, 2006 2:40 pm
by DieselFan
Whats the diff?
Posted: Fri Nov 03, 2006 4:16 pm
by Morph
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.
Posted: Fri Nov 03, 2006 4:17 pm
by DarkHelmet
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.
Posted: Fri Nov 03, 2006 9:46 pm
by DieselFan
Thanks for prompt help as usual!
Posted: Fri Nov 03, 2006 10:08 pm
by Ian
Doesn't the Blue top have a bit more power as well ?
Posted: Fri Nov 03, 2006 11:26 pm
by Duck Rogers
Doesn't the Blue top have a bit more power as well ?
No
Posted: Sat Nov 04, 2006 12:12 am
by DieselFan
Ian wrote:Doesn't the Blue top have a bit more power as well ?
The article does mention "mainly", so I wonder what else?
converting a silvertop
Posted: Tue Nov 07, 2006 8:31 pm
by Spongebob
Would it be possible to convert a silver top to a blue top? If so, is it worth it?
Re: converting a silvertop
Posted: Tue Nov 07, 2006 9:39 pm
by Morph
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
Posted: Tue Nov 07, 2006 10:54 pm
by RV4ker (RIP)
Posted: Wed Nov 08, 2006 7:34 pm
by John Young
RV – you are unique – glad they broke the mould. Gee, imagine 2 of you !!
Regards
John ZU-CIB
Posted: Wed Nov 08, 2006 7:46 pm
by RV4ker (RIP)
Posted: Wed Nov 08, 2006 9:56 pm
by Spongebob
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
Posted: Wed Nov 08, 2006 11:32 pm
by Morph
What scares me is the colour match is perfect. I sense this has been done before
Posted: Sun Nov 12, 2006 8:34 pm
by Boet
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
