Scooterotica

RT cylinder what are the advantages and disadvantages of fitting a reed valve.
Not a home job but one done by a professional.

For
1. Better fuel consumption
2. More power (If port timing changed to take advantage of the reed valve).
3. Reduced spitback
4. More flexible engine.

Against
1. Cost
2. May be more difficult to fit a filter.

Are you watching timbo

Minority wrote:
Against
1. Cost
2. May be more difficult to fit a filter.

3. One more thing to go wrong

Timbo wrote:

Minority wrote:
Against
1. Cost
2. May be more difficult to fit a filter.

3. One more thing to go wrong

Could you explain a bit more about your No 3
I think most modern two stroke engines are reed valved and the never give problems

4. Better response from the engine low down.

5. Don't have to rev the s**t out them in town.

.....RR1.......

psychedelicropcircle wrote:
5. Don't have to rev the s**t out them in town.

.....I don't have to do that anyway with my set up......

Two strokes need reed valves.End of

If you want the advantages of a reed valve, why would you try to fit an aftermarket item, rather than change to a kit that was designed to incorporate one from the start? The biggest issue with a bolt-on reed manifold is the space that it takes up and the limited clearance to panelwork, whereas the reed designed kits tend to have it designed in to maximize clearance.

Does looking at this option suggest that you bought the wrong kit in the first place?

I'm raising questions, rather than giving my opinion as I too can see pros and cons for both.

Adam