Gen 1 V-Max exhaust, a modern thread.

[TK3333]

I'm suggesting you investigate Sean Morley's kit, Morley's Muscle.

This is what I have and am very happy with the way my bike runs. Cant hurt to listen to his input. Had Sean do the work and never have to mess with my carbs except for the occasional sync. Keep the tank topped off with fresh fuel and run some bg44k through it a couple times a year just because....

 

[Fire-medic]

Thanks for the report.

 

[klutch14u]

This is what I have and am very happy with the way my bike runs. Cant hurt to listen to his input. Had Sean do the work and never have to mess with my carbs except for the occasional sync. Keep the tank topped off with fresh fuel and run some bg44k through it a couple times a year just because....

Thanks, I plan to engage Sean once I'm a little more homed in on what I'm going to do so I don't waste a bunch of his time. How'd he work on yours being in NJ and him in Wichita?

 

[telelinkken]

Incorrect. ALL gen 1's share the same size exhaust components which can be mixed and matched as you desire.
The Kerker's that were purcahsed will work just fine for all years gen 1s

Just want to clarify, '85 exhaust is larger dia.(1mm OD) on the header side and the same as ALL Gen.1 on the muffler side?

 

[TK3333]

How'd he work on yours being in NJ and him in Wichita?

I pulled the carb rack off
and shipped it to him. Got it back all ready to go back on.

 

[one2dmax]

Just want to clarify, '85 exhaust is larger dia.(1mm OD) on the header side and the same as ALL Gen.1 on the muffler side?

The mufflers are different outlet sizing (I think 2mm ID). ALL header pipes are the same. All muffler inlet sizes are the same. All head connection sizes are the same. Vboost butterflies are different with 86-07 being 2mm larger ID.

 

[telelinkken]

Hmm... interesting!
So all mufflers and exhaust components for gen1 are interchangeable ??
I thought '85 was different ???

 

[Fire-medic]

Hmm... interesting!
So all mufflers and exhaust components for gen1 are interchangeable ??
I thought '85 was different ???

As Sean noted above.

 

[Fab333]

The mufflers are different outlet sizing (I think 2mm ID). ALL header pipes are the same. All muffler inlet sizes are the same. All head connection sizes are the same. Vboost butterflies are different with 86-07 being 2mm larger ID.

so does that mean that the 85 bike doesn't go as well as the later years?

 

[CaptainKyle]

They all equal out about the same

 

[one2dmax]

To get the most ideal factory components you would use 85 mufflers and 86-07 vboost assemblies. BUT, it's so miniscule difference that it doesn't really matter. You will see maximum benefit by changing out to a full header and good jet kit.

 

[Stephan]

has anyone dyno the blackwidow exhaust system?
do they lose or gain from others?
do you have to re tune to get them to work correctly?

I have had the Black Widow system (front and rear headers and mufflers) on my gen 1 for the past 5 years on standard jets and other carburetor settings and engine runs perfectly. I really do mean perfectly. Quite a lot noisier than standard. Have not dynoed the bike with this system however and if I want to go faster I get out the gen 2!

 

[Fab333]

I have had the Black Widow system (front and rear headers and mufflers) on my gen 1 for the past 5 years on standard jets and other carburetor settings and engine runs perfectly. I really do mean perfectly. Quite a lot noisier than standard. Have not dynoed the bike with this system however and if I want to go faster I get out the gen 2!

i have the blackwidow exhaust and it does sound great, and bike runs extremely well.

 

[Brett unsupervised]

Most slip-ons will maitain stock performance levels just with less weight and more sound then the stock mufflers. The Cobra's are about the only system that will lose power (there are a few others that also do the 4-4's which you want to avoid if performance matters to you).

The full systems are the only type that will give a potential power increase. Some work with the centerstand and some don't (like the Kerker). Many are discontinued (Kerker and Voodoo). Some are about to be discontinued (like the Marks). I still have the new Hindles we offer and the Muscle Marks until those run out. I've also got a few used systems around here.

*Note, the Delkevic may appear that they offer a full system but it's module to the stock system so it's not going to give any performance gain (or loss).

sean -- I have two bike (1998 and 2002). I tinker with the 1998 and the 2002 is almost bone stock but "pretty", so generally plan on keeping it just as it is. however... Im buying headers from you for the 1998 which currently has supertrapps on it. wondering what to do with the supertrapps. main question: just confirming the supertrapps just make it sound different, don't add any performance ... so moving them over to the 2002 would not improve the 2002 performance ... correct?

lastly the stock exhaust has this thing circled below. what is that? is that the scavenge connection? looks like if you buy slippons that piece goes away. note the new supertrapps just dont have that piece (also pictured)

sorry -- one last dumb question ... do "slippons" just slip on and done? or do they have to be welded to the old exhaust pipes... embarrassed to ask ... my supertrapps look like they were welded on (not very pretty welding).

 

[Fire-medic]

That's the resonator box, it is not welded-onto the header pipes. If someone welded the slip-ons to the header pipes, it would be a big PIA to take off. No, the slip-ons are just that, they slip-on. Then they're bolted together with clamps.

Slip-ons look/sound different, no increase in performance.

 

[Brett unsupervised]

That's the resonator box, it is not welded-onto the header pipes. If someone welded the slip-ons to the header pipes, it would be a big PIA to take off. No, the slip-ons are just that, they slip-on. Then they're bolted together with clamps.

Slip-ons look/sound different, no increase in performance.

What is purpose of resonator box?

 

[Fire-medic]

It gives the exhaust a chance to have the ability to allow one exhaust pulse to give a boost to the following exhaust pulse, so they help the flow as each in turn are on the power/exhaust strokes. The simple word for it is 'scavenging.'

 

[one2dmax]

As noted the stock mufflers are one assembly for both sides with the connection resonator between them. Tone and scavenging. The slip-ons do not have that and shed a lot of weight, add more noise, and easier to install then the stock mufflers. They do not add power so keep that in mind.