Curious if anyone is making an un-smashed crossover to use with the stock headpipe.
Quote from: FXD02 on July 25, 2019, 03:26:04 PM
Curious if anyone is making an un-smashed crossover to use with the stock headpipe.
I haven't seen one yet and with the unbalanced inlet I doubt it would make any performance difference
Fuel motor makes one for twin cams. Not sure about the m8.
Fulsac has a crossover pipe that is round. Fuel Moto has one that is flattened some. As much R&D that these two company's do with a dyno I can't help but think that it really doesn't matter much performance wise. I wonder whether there is a sound difference between the round vs, flattened crossover pipe.
I read somewhere quite a while back that Fullsac said on the Twin Cams, it didn't make any difference whatsoever. Said they only made them because people kept asking for them.
Rear drive belt clearence seems to be the reasoning as to why they are formed that way.
Doesn't seem to have much affect on the dyno.
The High Flow exhaust system comes with full round crossover. I don't know if it makes any difference or not. But the exhaust volume out of the left and right mufflers seems about the same now. With the squeezed crossover, the right muffler definitely carried the lion's share of the exhaust. Hardly needed the left side.
Quote from: Ken R on August 08, 2019, 06:33:35 PM
The High Flow exhaust system comes with full round crossover. I don't know if it makes any difference or not. But the exhaust volume out of the left and right mufflers seems about the same now. With the squeezed crossover, the right muffler definitely carried the lion's share of the exhaust. Hardly needed the left side.
just thinking out loud
with that being said would there be any advantage to swapping the dual pipes once in a while to keep carbon build up equal ?
Quote from: moose on August 09, 2019, 04:09:11 AM
Quote from: Ken R on August 08, 2019, 06:33:35 PM
The High Flow exhaust system comes with full round crossover. I don't know if it makes any difference or not. But the exhaust volume out of the left and right mufflers seems about the same now. With the squeezed crossover, the right muffler definitely carried the lion's share of the exhaust. Hardly needed the left side.
just thinking out loud
with that being said would there be any advantage to swapping the dual pipes once in a while to keep carbon build up equal ?
I wouldn't think it would make any difference. The Catalytic Converter in the High Flow system runs at very high heat and is self-cleaning. The rest of the muffler is just a big tube with some packing and a perf-steel sleeve to keep the packing up against the outer walls of the muffler. And with proper fuel, there isn't all that much carbon, anyway.