Hallo Jungs
ich habe eine 26ft Wellcraft Excalibur mit einem 496 HO. und einer offenen Auspuffanlage. Da ich leider keine Freunde mehr an unserem Hafen habe, ich bin nur der Brüllfrosch. Jetzt habe ich mich entschlossen, eine Schalldämpfung einzubauen. Wer hat Erfahrun g mit Schalldämpfern(Muffler).
Kein Komplettumbau mit Geweih.
Meldet euch wenn ihr gute Ideen habt.
Gruß German H
offene Auspuffanlage
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- Excalibur1966
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offene Auspuffanlage
German Richter
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Hi Excalibur! Nice boat you have even a better engine
We already discussed this item on this forum (about full time mufflers) You'll find a lot of info
viewtopic.php?t=1228
In a "general" statement, you can say there are 3 different ways of muffling the exhaust noise
1. Diverters...With electrical or pneumatic (airpressure) diverters, exhaust is routed through the prop or the transom tips (open exhaust). As you mentionned, no good option as you do not have the Y pipe (engine has to be taken out for installing etc.) Advantage: almost no noise when routed through the prop...Disadvantage: can not be used over 3000 RPM on High Performance engines (like 496 HO) or severe engine damage will occur
2. Switchable mufflers...these can be a complete replacement (with integrated muffler) exhaust tips (electrical operated) or a clamp on system (bolt on) pneumatic actuated. Advantage: good muffling when in closed position (docking / harbours)...and can be runned at WOT (with some powerloss) ...in open position they will NOT affect engine performances
3. Full time mufflers...can be obtained as a in-line mufflers, as replacement exhaust tips so with integrated mufflers, or as a clamp on mufflers (they clamp on your actual existing exhaust tips) Advantage the "better" mufflers (CMI's) will muffle @ +- 85 db which is very low noise Disadvantage; No mather how constructed, no matter what brand full time mufflers will always take some performances (the better the brand, the less HP they will take
BE VERY CAREFULL with cheap mufflers Like Edd..., Re...Mar etc. IMO they are "junk" and +-copied (from the good ones) and are not any good on High Performance engines (496 and better) etc...you might see - 400 RPM and creating so much backpressure engine damage will happen or if they create no backpressure, they won't muffle at all...in both cases a waste of money!
CMI just released their new full time mufflers which have been tested up to 1500 HP with minimal powerloss. At idle they are closed (85 db) and opening as RPM increase to lower the backpressure on the exhaust. Like the tubular headers, CMI is the best -no one comes even close- but superiour quality & performance has a price...
We sell all the above mentionned systems...so if I can be of any help, just let me know
We already discussed this item on this forum (about full time mufflers) You'll find a lot of info
viewtopic.php?t=1228
In a "general" statement, you can say there are 3 different ways of muffling the exhaust noise
1. Diverters...With electrical or pneumatic (airpressure) diverters, exhaust is routed through the prop or the transom tips (open exhaust). As you mentionned, no good option as you do not have the Y pipe (engine has to be taken out for installing etc.) Advantage: almost no noise when routed through the prop...Disadvantage: can not be used over 3000 RPM on High Performance engines (like 496 HO) or severe engine damage will occur
2. Switchable mufflers...these can be a complete replacement (with integrated muffler) exhaust tips (electrical operated) or a clamp on system (bolt on) pneumatic actuated. Advantage: good muffling when in closed position (docking / harbours)...and can be runned at WOT (with some powerloss) ...in open position they will NOT affect engine performances
3. Full time mufflers...can be obtained as a in-line mufflers, as replacement exhaust tips so with integrated mufflers, or as a clamp on mufflers (they clamp on your actual existing exhaust tips) Advantage the "better" mufflers (CMI's) will muffle @ +- 85 db which is very low noise Disadvantage; No mather how constructed, no matter what brand full time mufflers will always take some performances (the better the brand, the less HP they will take
BE VERY CAREFULL with cheap mufflers Like Edd..., Re...Mar etc. IMO they are "junk" and +-copied (from the good ones) and are not any good on High Performance engines (496 and better) etc...you might see - 400 RPM and creating so much backpressure engine damage will happen or if they create no backpressure, they won't muffle at all...in both cases a waste of money!
CMI just released their new full time mufflers which have been tested up to 1500 HP with minimal powerloss. At idle they are closed (85 db) and opening as RPM increase to lower the backpressure on the exhaust. Like the tubular headers, CMI is the best -no one comes even close- but superiour quality & performance has a price...
We sell all the above mentionned systems...so if I can be of any help, just let me know
more info on www.nordicpowerboats-europe.com
Best Buy High Performance & Lab Finished Props in Europe Online shop www.powerboatprops.com
Best Buy High Performance & Lab Finished Props in Europe Online shop www.powerboatprops.com
- NORDIC POWERBOATS EUROPE
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- Beiträge: 689
- Registriert: Di. 31.05.2005, 10:46
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Some pictures of the newest CMI mufflers (at idle they will be in closed position and opening themselves by the exhaust pressure)
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more info on www.nordicpowerboats-europe.com
Best Buy High Performance & Lab Finished Props in Europe Online shop www.powerboatprops.com
Best Buy High Performance & Lab Finished Props in Europe Online shop www.powerboatprops.com