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hullygully wrote:can you sick a camera down there to confirm, Ive had same but mine was a sweaty push to mates garage
Rich Oswald wrote:Changed mine, one petal was totally shot to bits. Any idea why this would happen in less than 500 miles?
Leotech wrote:Rich Oswald wrote:Changed mine, one petal was totally shot to bits. Any idea why this would happen in less than 500 miles?
The reed may be hitting something in the inlet tract, I have LTH reeds on 2 of mine and had no issues at all, not that that helps you in the slightest. My broken reeds were on another engine configuration.
Also jetting can cause reeds to break, too rich usually and ignition timing, too advanced.
Fast n Furious wrote:The 186 uses a reed valve from a very high revving kart engine and is not really suited for use in a lambretta. Consequently, they are known for breaking the top reed petals.
The recommended solution is to "double up" on the top petals.
Storkfoot wrote:Fast n Furious wrote:The 186 uses a reed valve from a very high revving kart engine and is not really suited for use in a lambretta. Consequently, they are known for breaking the top reed petals.
The recommended solution is to "double up" on the top petals.
I did double up on the top ones. It’s the bottom that has bent outwards. I’ll double up both sides when I replace them.
To be fair, this engine has done many thousands of miles here and in Europe. This is the first time I have had, by the looks of it, any problem with the reeds. That said, the Ron Moss Avanti exhaust allows it to rev higher than it has previously.
Storkfoot wrote:My eyesight must be goingI had doubled up on both sides. However, I have discovered today that there is a right way and a wrong way to fit the reeds. There is a cut out in one corner and these must be placed in opposing corners of the Reed block.
Edit: the cutout must be to the left on both sides. Perhaps this should be referred to when you buy Granturismo kits. I have never seen it in writing anywhere and I have had my GT186 for the best part of ten years.
Rich Oswald wrote:Storkfoot wrote:My eyesight must be goingI had doubled up on both sides. However, I have discovered today that there is a right way and a wrong way to fit the reeds. There is a cut out in one corner and these must be placed in opposing corners of the Reed block.
Edit: the cutout must be to the left on both sides. Perhaps this should be referred to when you buy Granturismo kits. I have never seen it in writing anywhere and I have had my GT186 for the best part of ten years.
There was a cut out on both sided on my LTH one's. Martin Cook's advice was not to over tighten the securing screws as it makes them open up prematurely. He said just barely tighten and use locktite.
Rich'
martyn dwane wrote:There was a cut out on both sided on my LTH one's. Martin Cook's advice was not to over tighten the securing screws as it makes them open up prematurely. He said just barely tighten and use locktite.
Rich'
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