Help fund the VFR header

I have a microtec now, son. When your balls drop, come talk to me.

 

There you go again lol nothing to do with VFR's or headers.

 

Old speed goodies count:

http://theoldmotor.com/?p=149489

 

LMFAO!!!! :glee:

Bingo! We have a winner!!!

 

You might be surprised at what some folks are not allowed to talk about. I will guess you have no military experience. The premise that conditions of confidentiality and secrecy by law, agreement or contract somehow do not exist, is gross ignorance.

 

Not really. Did you not know I am a lawyer BB? I've written / enforced dozens of confidentiality agreements over the years in my capacity as a government agency attorney, private law firm, and corporate attorney. I've also been subject to them myself. I just happen to find Trollcalboy's comment highly amusing! :glee:

 

Not only slight but the weather was cooler and the humidy was lower on the higher run. If it didnt dyno on the same dyno the same day I usually dont put any stock in it

 

Man you guys are brutal lol. Most dyno runs are converted to standard atmospheric conditions anyways (It shows you right there the correction factor was lowered from 1.01 down to 0.99). I understand the want/need to have dyno runs done back to back on the same dyno, on the same day, with the same conditions, but be realistic here. We are not dealing with a major company or race team here. We are dealing with DIY tuners and if you have ever changed a header on a vfr, you will know it is not a fun, nor easy task. You would be hard pressed to remove the factory header and install an aftermarket header in the same day, let alone the same day, without atmospheric conditions changing...

It is pretty humorous all the people down playing the huge 7000-redline area under the curve gains shown with just one simple bolt on. Keep in mind, the before and after already had a slip-on, so we are not talking a full system before and after. We are talking about just simply upgrading the header. I would love to see a dyno that actually impresses you guys. What do you actually expect from a simple header upgrade? What would make it worth it to you? 10, 15, 20%??? That simply isn't realistic. I do not know if you have felt what a 6% gain feels like, probably not, but it is fairly noticeable, especially when it is not just an at the peak gain, but a gain for the entire top half of the rev range, with what looks to be about a 9% gain from 10,5000-11,500....

 

Im gonna pretend I didnt read this and if anyone takes more than two to three hours to change the complete exhaust one of these bikes probably needs to stick to oil changes

 

Apparently you have never had the misfortune of an exhaust stud backing out on you or a header not lining up correctly (more of an issue with eBay headers than the oem and two brothers/erion headers).

Now continue to quote me where it says doing it "without the atmospheric conditions changing"...

Then realize you still need to do a dyno tuning session before the install and after the install. (Or at least before and after runs, but without​ afr corrections, the before and after runs won't be very accurate)

Hopefully you have a shop that let's you work on your bike your self, in between runs or you are going to have to fork out some major cash, to do two dyno sessions and +3 plus hours labor.

Most of the time people are doing the installs themselves and then riding to the dyno shop. Not many people are lucky enough to have a competent tuner close by. A lot of people have to drive several hours to get to their tuner.

In a perfect world, sure before and after header install dynos can happen same day, with the same conditions, but in reality, that isn't going to happen very often.

Sent from my Nexus 6 using Tapatalk

 

It seems most people just look at a top number. When you add power over a larger rpm range the total power increase is a lot more. For instance my CBR 1 k is around 160 rwhp and on long straights at the track I can pull on friends bikes with considerable more peak hp. Yeah from 10.5 to 12.5 they are making 20 more ponies than me but 6 to 10 I was making more than them. Near the end they are near or have caught me, but then there is the whole trail braking thing to deal with. Lol. I like yours and Mohawks work. Keep having fun.

 

Well J this got jacked a bit-- took a hard right.
Should be getting it back together next week right?


Sent from my iPhone using Tapatalk

 

It's all good, let the party run its coarse. I'm not here to judge. I know what I have going on and the support behind me. if folks want to debate go ahead. I'll know what I have going on. I'll be sharing the info when it comes together here in the next couple of weeks or so.

On a side note on the header to do. I'm lucky to have one of the best IMO tuners of v4s aka VFRs know it alls here less than hour away, plus being he's into this, he is cutting me a deal, but hate to have to pay full monty, it wouldn't happen. For those that can swap out a header in half a day, props to you, That's not the norm. But first lets see how the 2bro does it's job, then from that I'll know more. nothing like known facts .

 

Welcome to the not in the know club.

 

I should have let you pull the Kerker collector off my '86 for ceramicoat. :lol:

 

Back on subject. I came into another little thing that's got to be address. While doing the install with the 2Bro, I see that the stock exhaust copper gaskets of sorts won't work. The gaskets are actually copper O rings so when tighten down they conform to the space, great when they are made for 32mm primary's, not so with 36mm ones, they want to roll into the tube, that won't due. So I'm on the hunt for a fix, think I have the answer, but won't know until a run my thoughts on the lathe. That being, guess now I'll need to include the correct header gaskets.

 

Here is what I'm talking about doh! Not good, back to the drawing board, or the lathe.

 

Murphy at work! Check the several gasket suppliers online; there are loads out there. Or hit some MC parts departments with your specs!

 

I did that yesterday, drove a few folks batty. I did find some automotive header asbestos material, but for it's size would probably not stand up to the abuse. Why now I'm looking at making them, thou they might end up being soft brass. Copper stock in this size is crazy $ and hard to get.

 

I expect these folks can help: http://www.cometic.com/