Exhaust for vn1500

6196 Views 7 Replies 5 Participants Last post by sjvalleydave, Mar 25, 2015

Daninfrance

Discussion Starter · Feb 15, 2015

Hi guys After the great help i received in fixing my battery problem
I have a question to you knowledgeable people,
My bike paper work and the frame put the model as a VNT50A which I take to mean it is a VN1500 A model (1996).
It has the exhaust that is split in to 4 parts passing through a big muffler behind the engine with both pipes then passing down the right side. I was wondering is it possible to fit vance hines straights removing the big muffler box or any other after market straight exhaust system. Any advice would be gratefully received.
I know that I may need to get the Carbs rebalanced and re jetted but is there any other major problem that i am not seeing here? Thanks in advance I have scoured the forum but can't see any other posts on a simmer matter and google is not my friend on this on. Danny

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PatC

· #2 · Feb 15, 2015

That box the pipes go into is a "goat's bladder" catalytic converter. You can remove it and do what's called a "Dutch bypass"

and then just put new slip ons on the bike. Aftermarket pipes are getting hard to find for these older bikes.

If you just do the pipes, you shouldn't need to mess with the carbs. Be advised that altering the exhaust and air on these twin carb Vulcans can be a tuning nightmare to get the carbs synced and working properly again. If you have a lot of time, patience and some knowhow it an be done.

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sunnybob

· #3 · Feb 15, 2015

Daninfrance said:
Hi guys After the great help i received in fixing my battery problem
I have a question to you knowledgeable people,
My bike paper work and the frame put the model as a VNT50A which I take to mean it is a VN1500 A model (1996).
It has the exhaust that is split in to 4 parts passing through a big muffler behind the engine with both pipes then passing down the right side. I was wondering is it possible to fit vance hines straights removing the big muffler box or any other after market straight exhaust system. Any advice would be gratefully received.
I know that I may need to get the Carbs rebalanced and re jetted but is there any other major problem that i am not seeing here? Thanks in advance I have scoured the forum but can't see any other posts on a simmer matter and google is not my friend on this on. Danny

The only problem you will have is the muffler fixings. The 1500A /B /and C models are very different frames to the later "classic" 1500's. The brackets will not match from the classic pipes. There was a company selling nice pipes for the A model, called "REMUS" Might be worth surfing for them, but its a long time ago now.
If you change ONLY the exhausts, the difference is small enough that the carbs are unlikely to need rebalancing.

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sfair

· #4 · Feb 15, 2015

Caution: ANY modification that affects carburetor signal, which exhaust is one, can upset fuel metering. There are many variables such as present tune, altitude, etc. which also have an effect. Going in thinking that the "rule" about exhaust changes only needing no tuning might set you up for an engine that runs poorly. It has to be judged on a case by case basis, especially on two carb models.

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Daninfrance

Discussion Starter · #5 · Feb 15, 2015

Thanks guys the person before me has what look likes drilled holes in the exhaust 1 int the front down pipe and 2 after the muffler box, so when running it smells like it is running rich. so i need to do something. But am still waiting on voltage reg/rec to test the bike fully will be here tomorrow so will fit and get back to you thanks for the pictures PatC. mine would be different as the exhausts both run to the right of the bike is that normal for a 1500A?

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PatC

· #6 · Feb 15, 2015

Daninfrance said:
Thanks guys the person before me has what look likes drilled holes in the exhaust 1 int the front down pipe and 2 after the muffler box, so when running it smells like it is running rich. so i need to do something. But am still waiting on voltage reg/rec to test the bike fully will be here tomorrow so will fit and get back to you thanks for the pictures PatC. mine would be different as the exhausts both run to the right of the bike is that normal for a 1500A?

No, it's normal, but the pipe headers are on different sides, are they not?

I know the pic I posted is off of a newer Nomad, but it gives you an idea of what a dutch bypass is. It might be a lot cheaper and lot easier than finding aftermarket pipes for that bike. Any muffler shop should be able to do it , and then you could just replace the mufflers which are easier to find. Or you could debaffle the ones on it.

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Daninfrance

Discussion Starter · #7 · Feb 16, 2015

Thanks PatC I will check in the morning and i will see if i can find a place to get one made up they are just a little strange in France!!!!

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sjvalleydave

· #8 · Mar 25, 2015

MAC Racing Exhaust out of Los Angeles does a nice looking aftermarket exhaust for the vn1500A bikes. They have 3 different flavors available for the bike and they are very reasonable. They are double walled, etc...not a single wall cheap Chinese deal..

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