New member

[Greg Ruggles]

Hello everyone, just joined and am excited to start learning. My name is Greg and I have a 40" Dumas Scarb 337. It has a .46 O S Max VRM in it. I bought this boat when I was 16 and now I'm 61. I destroyed the stuffing tube back in 1980 and it sat in the rafters ever since. This past February 2024, I fix it up and got her wet. Quick question, is there a tuned pipe on the market for this engine? I want to go faster... who doesn't right?
Here's what the boat looks like now.

 

[Danny King]

Welcome aboard. Have a pic of the inside?

 

[Greg Ruggles]

This is what I've got. I'm told that this is NOT a tuned pipe for this engine. I've looked at a lot of websites and can not find anything for this engine. The engine runs great, tops out probably between upper 30's to low to mid 40's. I just bought a Picco 90 with a tuned pipe and a 5" engine mount for $300.00. I was thinking of putting it in the 40"Scarab,but people are telling me that would be to much engine for that size. I may now but a 47" Catamaran from Bonzi Sports and put the Picco in that instead. I may look at getting a CMB .67 and install that in the 40". I need more speed. I've also heard that putting a OPS 60~67 tuned pipe on the .46 engine would increase performance...but I was told by other people that it would hurt the performance be cause of "Lack of back Pressure". Like I stated earlier, I'm looking to learn and gather information. Here are some pics of the inside guts of the boat.