blocking crossover?
Cruiser
Joined: Oct 2006
Posts: 104
Likes: 0
From:
RE: blocking crossover?
I did not use this kit but I made my own for a 2000 RK Classic. Could not keep pipe on right side from bronzing. All you hear is about too lean a condition so added a Fuel Pak and a set of Vance and Hines slip ons. Had the fuel Pak tuned at dealer and guess what? Right side bronzed again. Probably shoulda bought a powercommander but i decided to block rear cyl. from exhausting any on right side. Cut pipe at Y and plugged it then reinstalled. The bike still performs fine but am sure that losing the scavenging effect has cost at least some power. No increase in performance or throttle response. Just more even heating of pipes. Would not recommend this method as a good choice. IMHO
Road Warrior
Joined: Jul 2006
Posts: 1,532
Likes: 7
From: Rochester N.Y.
RE: blocking crossover?
Spider MHO would be.
1 no
2 no
3 probably not too hard.
If you look closely at the design of the stock exhaust , HD tried to give us the benefits of a 2 into 1 system and the look of a 2 into 2 system.
If one was to block the crossover pipe , the exhaust flow would have to come to an abrupt stop , go backwards , and try to flow out the left side after this cluster f**k.
Might sound neat ,but should kill performance , or at the least , give a tuner a real time to get running properly.
If you went with a true dual setup , at least the fullsac version (neat idea), you will notice they at least try to give the rear pipe a nice straight shot out of the head before turning it towards the muffler.
The problem as I see it from a tuning standpoint would be , the pipes really shoud be at least the exact same length in order to get the most from a 2 into 2 system.
The Bassani power loop would be the slickest thing I've seen so far , from a "flow and length" perspective.
The look of the Bassani is a little funky , but the theory is very sound indeed.
Looks like a bad idea from a tuning standpoint anyway.
Mick
1 no
2 no
3 probably not too hard.
If you look closely at the design of the stock exhaust , HD tried to give us the benefits of a 2 into 1 system and the look of a 2 into 2 system.
If one was to block the crossover pipe , the exhaust flow would have to come to an abrupt stop , go backwards , and try to flow out the left side after this cluster f**k.
Might sound neat ,but should kill performance , or at the least , give a tuner a real time to get running properly.
If you went with a true dual setup , at least the fullsac version (neat idea), you will notice they at least try to give the rear pipe a nice straight shot out of the head before turning it towards the muffler.
The problem as I see it from a tuning standpoint would be , the pipes really shoud be at least the exact same length in order to get the most from a 2 into 2 system.
The Bassani power loop would be the slickest thing I've seen so far , from a "flow and length" perspective.
The look of the Bassani is a little funky , but the theory is very sound indeed.
Looks like a bad idea from a tuning standpoint anyway.
Mick
Elite HDF Member
Joined: Jul 2006
Posts: 4,813
Likes: 6
From: Rio Grande Valley-Texas
RE: blocking crossover?
If you spend 15k to 20k on a bike, don't spare $200 and cheap something out that may cause problems such as restricted flow and heat issues. Just a thought!
Tourer
Joined: Jun 2006
Posts: 469
Likes: 0
From: Motown
RE: blocking crossover?
I see a lot of negative comments about this contraption, but nobody has even attempted to explain exactly why this is any different, better or worse, than the Fullsac mod. To me, it appears to be a cheap method of converting your stock pipes to duals, just like the Fullsac system. So what's the big deal?
Personally, I wouldn't use it, since I would rather have a true dual set-up which eliminated the cross-over pipe completely. But there was a guy here that wanted to keep the stock look while running duals. This would seem perfect for that application.
Personally, I wouldn't use it, since I would rather have a true dual set-up which eliminated the cross-over pipe completely. But there was a guy here that wanted to keep the stock look while running duals. This would seem perfect for that application.
Seasoned HDF Member
Joined: Dec 2004
Posts: 11,068
Likes: 1,473
From: Texas! Ya mean there's someplace else?
RE: blocking crossover?
Geez, guys! This has been done for a coupla hunnert years with the freeze plugs. Doesn't hurt anything, and really doesn't perform any worse than the typical True Duals, seat-of-the-pants. After all, if you're going for street performance, you're not gonna use any true duals, 'cause they ain't nothing but dressed-up drag pipes.
The Shovel era bikes had the crossover in the pipe coming from the rear cylinder to the front pipe. We'd cut the pipe, grind out the restrictor, then put a freeze plug in where the pipe teed to the left side, remove the left side, and have an old style 2-into-1. Usually put a fishtail muffler or extension on it.
The Shovel era bikes had the crossover in the pipe coming from the rear cylinder to the front pipe. We'd cut the pipe, grind out the restrictor, then put a freeze plug in where the pipe teed to the left side, remove the left side, and have an old style 2-into-1. Usually put a fishtail muffler or extension on it.
Elite HDF Member
Joined: Mar 2006
Posts: 3,673
Likes: 606
From:
RE: blocking crossover?
ORIGINAL: pococj
Geez, guys! This has been done for a coupla hunnert years with the freeze plugs. Doesn't hurt anything, and really doesn't perform any worse than the typical True Duals, seat-of-the-pants. After all, if you're going for street performance, you're not gonna use any true duals, 'cause they ain't nothing but dressed-up drag pipes.
The Shovel era bikes had the crossover in the pipe coming from the rear cylinder to the front pipe. We'd cut the pipe, grind out the restrictor, then put a freeze plug in where the pipe teed to the left side, remove the left side, and have an old style 2-into-1. Usually put a fishtail muffler or extension on it.
Geez, guys! This has been done for a coupla hunnert years with the freeze plugs. Doesn't hurt anything, and really doesn't perform any worse than the typical True Duals, seat-of-the-pants. After all, if you're going for street performance, you're not gonna use any true duals, 'cause they ain't nothing but dressed-up drag pipes.
The Shovel era bikes had the crossover in the pipe coming from the rear cylinder to the front pipe. We'd cut the pipe, grind out the restrictor, then put a freeze plug in where the pipe teed to the left side, remove the left side, and have an old style 2-into-1. Usually put a fishtail muffler or extension on it.
Outstanding HDF Member
Joined: Oct 2006
Posts: 2,340
Likes: 2
From: Omaha Nebraska
RE: blocking crossover?
Like someone else said it wont flow as well. The Fullsac conversion is a cheap enough option that if you want the true dual, thats the way to go. It will flow better than the freeze plug option and then you can get rid of that down tube off the rear jug.
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