Jump to content

Black Widow header / Dual Outlet Slip-On


Recommended Posts

  • Member Contributer

Just saw the Black Widow header listing on ebay; anyone happen to have one?  Was curious about the installation, finish, fit, issues with side or center stand.

 

And I saw on ebay that someone offered a stainless steel oval slip-on that had dual outlets....but now I am not able to find it.  I do not know if Black Widow made it or someone else.....so once again, anyone here happen to know about this slip-on?

 

 

 

 

Link to comment
Share on other sites

I have a black widow system on my VFR 800 Fi ( 2000 ). 

 

Fits perfectly , quality looks good and it went together really easily and I never had to use any assembly paste.

Works perfectly with the centre stand. 

I read many reviews and people were bitching about this that and the other, chinese made, ( which I don't believe )  copies etc etc . I thought it was very good value for money and I certainly have nothing negative to say about it at all. 

Link to comment
Share on other sites

  • 4 weeks later...
  • 2 months later...
  • Member Contributer

I still have not click the buy button on the BlackWidow exhaust header....just not able to get myself to spend the nearly $400.

 

I did locate that dual outlet slip though, it is not made by BlackWidow,....thought I wrote the mfg down, appears I did not.

 

And to answer the old question above...no the 94-97 VFR's exhaust is totally different from that on a 2006.

Link to comment
Share on other sites

  • Member Contributer

I think it was the Black widow that after I saw one of the pictures where one cylinders pipe T'd into another one I decided that wouldn't be a good one to get. Not sure if it was a Black widow or not, but look at all the pictures carefully.

Link to comment
Share on other sites

  • 3 weeks later...
  • Member Contributer

You know....I saw that as well....at least in looking at the pictures it sure seems like there is a "T" joint where a front joins a rear tube.   I will take a very close look at the pictures again and if that "T" is there.....I will be passing on them.

 

Thanks your your reply.

Link to comment
Share on other sites

  • Member Contributer

That was 20 years ago, before the company changed it name.  I doubt they're still using the same jigs.

 

Ciao,

 

JZH

Link to comment
Share on other sites

  • Member Contributer

Image 51 - Exhaust-manifold-black-widow-vfr750-vfr-750-rc36-90-93-vfr750fl-fm-fn-fp

 

Yikes! 

 

I take back my doubts.  That's a picture from the company's current eBay listing.  It's evidently a copy of the old Motad 3rd-gen RHS-exit design, which allows the OEM exhaust can, with its swivel feature, to be used with the Black Widow aftermarket full exhaust system.  Oh, dear...

 

FWIW, their later efforts (5th gen+) look a bit better, but it's clear that their headers for the RC36 (both 3rd and 4th gen) are still pretty ropey.

 

[Btw, there's some interesting header information in the early part of this classic VFRD thread...] 😹

 

Ciao,

 

JZH

Link to comment
Share on other sites

  • Member Contributer

That picture does not appear to be the set I was looking at as the joint for the muffler is not correct for the 94-97 years.

 

I looked and looked at the pictures on ebay; have convinced myself that the front to rear joint is not a "T"...but....not far from it.  I also viewed pics of the stock system which to me looks to have about the same joint...almost a "T".  

 

Really having doubts that the Black Widow system flows any better than the stock....lighter, yes....so no "click" yet.

Link to comment
Share on other sites

  • 4 weeks later...
  • Member Contributer

Appears my comment did not make it.

 

After looking and looking at the various pictures of this system, the suspect "T" joint is not a true "T", it does have some angle to it...about the same as the OEM system.

Still have not clicked on the "buy it now" button....difficult to justify the $400 for unknown results.

Link to comment
Share on other sites

  • Member Contributer

The Black Widow header pairs the cylinders as if it were a 360° engine (RC30/45, VFR12, etc).  My ‘98 would not run with the BW header. I have an open airbox, PC5, and Staintune. Reinstalling the OEM header or the VFRD header, the bike runs perfect. BW asserts that my bike being modified is why it doesn’t run with their header and not the cylinder pairings(🙄). Your results may vary. 

Link to comment
Share on other sites

I am not arguing here but I have never heard /experienced that . An engine wont run because of a random exhaust port configurations. 

 

I am not an engineer , but until someone can 100 % prove to me that you can stop an engine from running because you joined the exhaust header pipes of cylinders 2 & 3  + 1 & 4 together instead of 1 & 3  + 2 & 4  I am not accepting this.

 

You join corresponding cylinders to each other, so that after 1 fires its gasses leaving the header help scavenge the gasses of the next one to fire. 

 

I get that an engine might run crap if you just randomly connect cylinders together but I have never heard of it stopping an engine from running.

 

On a side note, i have the 5 th gen Black Widow headers and exhaust and I have only good things to say about it . 

 

Regards,

Nat.

Link to comment
Share on other sites

  • Member Contributer

I compared photos for the BW header and the OEM for my 4th Gen....they have the same cylinder pairs connected; #1 goes to the bottom tube at the rear which is #1;  #4 goes to the top tube at the rear which is #3.  Going from pictures, did not remove the fairings off my bike to really check.

 

 Did not look at the VFR800 one.

 

 

Link to comment
Share on other sites

  • Member Contributer
11 hours ago, Careca said:

I am not arguing here but I have never heard /experienced that . An engine wont run because of a random exhaust port configurations. 

 

I am not an engineer , but until someone can 100 % prove to me that you can stop an engine from running because you joined the exhaust header pipes of cylinders 2 & 3  + 1 & 4 together instead of 1 & 3  + 2 & 4  I am not accepting this.

 

You join corresponding cylinders to each other, so that after 1 fires its gasses leaving the header help scavenge the gasses of the next one to fire. 

 

I get that an engine might run crap if you just randomly connect cylinders together but I have never heard of it stopping an engine from running.

 

On a side note, i have the 5 th gen Black Widow headers and exhaust and I have only good things to say about it . 

 

Regards,

Nat.


I could get it started, it wouldn’t idle, it would run like shit off-idle up through ~5000rpm, then, it would clean up. At higher rpm, I’m not 100% sure it was running as clean as I think it was. I put the original header back on and it ran perfectly. When my VFRD header showed up, I swapped it onto the bike, and it still ran perfectly. I assure you, that’s exactly what happened. If I would’ve had a dyno available, I would’ve liked to have seen how the A/F ratio looked. 

Link to comment
Share on other sites

I am not doubting you , but I have never heard of this and feel its all very strange that's for sure. 

 

Perhaps any engineers on here can enlighten us ?

Link to comment
Share on other sites

  • Member Contributer
6 hours ago, Mohawk said:

I assume you rebalanced the starter valves or carbs if you changed the exhaust ? 


No. I’m not sure how the starter valves would be affected.

Link to comment
Share on other sites

  • Member Contributer

I emailed Black Widow, asking about the header...was told that it is simply a replacement of the stock system, not a performance system.  So only reason to get one would be should the stock system develop holes from corrosion....which is not likely where I live.

Link to comment
Share on other sites

  • Member Contributer
On 4/30/2021 at 1:18 PM, Lannyl81 said:

Starter valves..????....please explain....


The ‘98-‘99 models have a rack of starter valves, which basically are valves that control air leaks. One is the control circuit, the other three circuits are vacuum-adjusted to the control circuit. So, these bikes have a “choke” lever on the left clip-on. That’s actually an enrichener lever that slide the rack of starter valves and closes off the air leaks/airflow, enrichening the mixture.  It’s a fairly primitive EFI system, but, it works. 
 

This pic shows the rack, with the 2nd one from the left being the control circuit. 

ED50326C-F46F-4AA0-8794-5391DA6D1293.jpeg

Link to comment
Share on other sites

On 5/5/2021 at 3:51 PM, Lannyl81 said:

I emailed Black Widow, asking about the header...was told that it is simply a replacement of the stock system, not a performance system.  So only reason to get one would be should the stock system develop holes from corrosion....which is not likely where I live.

I've been looking at these for my gen 3 - they describe the system as having an "improved lighter design" - is this just bs then? Or at least not enough of an improvement to make them worth swapping out a functional original system for? 

Link to comment
Share on other sites

Archived

This topic is now archived and is closed to further replies.

×
×
  • Create New...

Important Information

By using this site, you agree to our Privacy Policy.