3 Solex tuning

1947-1967
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Bhart_Canada
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3 Solex tuning

Bericht door Bhart_Canada » zo 15 jul, 2012 20:56

I am looking for some suggestions for tuning my mixed up engine compilation.

I have checked resources http://www.vsaab.com/html/twostroke.htm" onclick="window.open(this.href);return false; ,
and have figured that I have a standard configuration 1967 engine

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with a 12 bolt head

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that I can't identify, but may also be a standard head.

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and triple solex

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Yes, you notice the three small air filters. I put these on while I try and find an alternate filter for the standard air box.

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The filter change had made a big difference to the engine. Apart from the intake NOISE (very loud), what was originally a small stumble at part throttle with the standard air box, has now become a major stumble when giving gas. It is obviously running leaner with the foam filters and it still responds normally when full throttle is given, but when cruising with little gas, it will bog down rather than speed up when given a little more gas.

Can anyone suggest a website or .pdf or suggest information on setting up a Solex. I will have to confirm the jets, etc of what's currently installed

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so I can see where things are going wrong. Question - does the Solex have an 'accelerator pump'? A means of providing a quick burst of fuel when the gas pedal is pushed. This would be the first area I'd check but I can't find any diagrams or info.

Any help would be appreciated since its not too nice to drive right now.

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Re: 3 Solex tuning

Bericht door Bhart_Canada » zo 15 jul, 2012 22:08

OK, I just went across town to our storage garage and get the one, remaining air filter I've got.

This is the last, original Mann that was in a box of many old filters. Here it is next to the Crossland filter that looks like it was modified a while back with a piece of....filter?

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I put the red filter in and went for a drive

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What a difference. It runs properly, without even the small stumble. I will leave this in, but would like to be able to get a replacement somewhere or be able to tune the carbs to compensate for an alternate filter element.

Anyone know where to find a spare Mann filter or two?

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Amazing how sensitive the motor is to the airflow of different filters!

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