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5th & 6th VFR 800 Header build


RVFR

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. The part number is HA-00The one on the right has the same amount of pleats and looks to be the same size as the k&n I have for my 4th gen.

 

Hmmmm...What's old is new?

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I bought the larger one from my local accessories store the other day. Dropped in and asked for one, expecting to order it in. They happened to have one behind the counter. 

Hope i can still make it work for the big airbox mod.

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26 minutes ago, keef said:

I bought the larger one from my local accessories store the other day. Dropped in and asked for one, expecting to order it in. They happened to have one behind the counter. 

Hope i can still make it work for the big airbox mod.

Your part number is....? 

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my receipt says HA8098, so not much help.

I didn't keep the box since the box didn't fit in my top box.

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Thanks for asking, sorry for the lack of.   As it happens I'm mid stream in figuring out whats worth what.  After the dyno with the 2bros it showed some interesting Numbers.  That is the one header I thought as a many others do as well, is the hot ticket,  and yes it is,  but.. there's some questions that popped up during those runs.  so another dyno pull is in order doing a comparison with a clone vfr making sure I'm heading down the right path. My goal here is not only make a SS header, but one that actually gives some gain, be it in HP, T and or drive ability in how it makes the engine make it's power. I Have it do do another set of runs mid July.  From that I'll have a pretty good picture where things will head. Hang in there guys and gals,  Yea I know it's taking a bit longer, But H, it's also riding time too. ;)

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send me the 2 bros header and I will run it on my 6 gen and let you know what happens, dyno run b4 and after.

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Peppy is an understatement when it comes to RVFR's 5th gen - I rode it.

 

I was lucky enough to hang with RVFR [Jay] for a bit last week while I was in WA for a few days of Califonia Superbike School at a local track called The Ridge. Way, way too many adventures took place around this trip to list here, so I'll save details about the riding and VFR-surgery for other threads.

 

While out on a ride through the beautiful country in his neck of the nape, Jay was gracious and trusting enough to trade bikes with me for 20 or so miles of sweeping turns through a rural area. His 5th gen let me know it was getting down to business from 5000rpm to 6000rpm, then at 6000rpm, twisting the throttle became directly proportional to acceleration - this motorcycle ripped on demand from 6000-10000 rpm. I didn't go over 10000 because manners dictate that one ought not wring out a friend's bike when generously proffered, plus, there was nothing to prove and I was already having plenty of fun. When on the gas, Jay's 5th gen was way more exhilarating than any VFR I've ridden. Jay is spot on when he describes his motorcycle having improved driveablility, but calling his bike 'driveable' is like saying a BMW S1000RR is 'brisk'. When debriefing after trading back to our respective bikes, I used the word 'harmonized' to describe Jay's motorcycle. My 5th gen gets going just fine, thank you, I've no complaints, but compared to mine, Jay's adds more than a little snarling, leaping acceleration to the equation. For those who haven't read this entire thread and those who won't, he is running a relatively obscure large aperture K&N air filter, a high mount Staintune slipon, and Two Brothers Racing headers on a stock engine with a Power Commander III that has been dyno tuned to 112hp.

 

A bit of context: I owned a 1998 5th gen VFR 800 with a Two Brothers slipon for two years in 1998-1999. I've owned a 4th gen VFR 750 for two years and left it bone stock. I've owned two different 6th gen VFRs, and I've put 14000 miles on my current bike, a 2001 5th gen I bought  a year ago with 32000 miles on it. This current 5th gen has a Pipercross air filter, catless ceramic coated 1998/1999 headers, a high mount Staintune slipon, and a Power Commander III that has been dyno tuned to a whopping 99hp with very smooth, linear power and torque curves.

 

I am very optimistic about the headers Jay and Gabe are developing for the VFR 800.

 

Cheers all.

 

 

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Ah, thanks,   you're too Kind.  Oh yes that was a fun few outings huh. need to do this again  and again.  Your 5th gen runs pretty well, but I'm getting use to how mine runs so now it seems to be the new norm,  not that yours is a slouch in any sense of the word, but yea was fun to feel the diffenace  . Vfffrrrroooommmmm!!!!! 

 

Note to those,  yes I'm still working with Gabe on the header  build, I have a another dyno run with a clone VFR,  then from that I'll have a very good idea where this will head, but for now and in the mean time, since the weather is perfect I'm taking advantage of it. 

Thanks again to Sfdownhill, for letting me show you the country side. The word "Epic"  comes to mind.  

DSCF1118.JPG

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Well well,   yes it's taken longer than I would have liked,  never the less I have pretty much nailed down if having a good header is worth the funds.  YES!   The question now is, is it for you?

 

 

DSCF1164.JPG

DSCF1166.JPG

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Looks great Jay. What changes did you and Mike (the dyno tech) make to get this improvement? Isn't Mike is the gentleman you mentioned is a former HRC tech and V4 specialist?

 

Sorry to hear about the 'clone' 5th gen having brake issues on the way to the dyno session - glad she's OK. Eventually the comparison will help define the Two Brothers headers' benefit and whether your machine is one of those "immaculate assembly line anomalies" or if we all can strive for the distinct advantages you are enjoying.

 

Mbrane - I only rode RVFR's 5th gen before this most recent dyno session, but your assessment of the power/torque graphs are spot on. The graphs tell the exact story of how that motorcycle rides.

 

 

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Thanks guys for your patience.  On the tune matter, Mike has the latest set up from Dyno jet where they came up and re did all the calibration to the newer software, which was one of the reasons this took a bit longer,  then they moved the dyno   That being, the tune was quite the process,  you could actually watch the dyno and the computer work together.  I have a PC3 for my 5th gen, which isn't out of date as some have thrown out,  trick is finding one these days.  What this new software did was to dial it all in a bit more refined than one could do by hand, meaning the fuel ratio is set,  the computer and dyno do the rest, sorta.  All in all, it's well worth the time.   

Now as far as a price,  Gabe and I talked a bit more and it's looking to be hovering right at that magical  $1000 dollar mark,  when compared to whats out there at this level, that's more than fair IMO.   we will be working out the details,  but for now we have it where a mock up is next, got a get the loner VFR back up and going.  but have a feeling we're ready to  move on orders fairly soon..   Since these are hand made, we'll do a one on one deal. vs.  have  like 10 orders then knock em out,  just depends who's all in and ready to commit,  vs one a month thing.   To soon to say for sure, but working out the timing of it all as Gabe is also in the process in moving to a full on shop location here local to me. :) 

 

Thank SF.. smh :)   there's no real way of explaining the feel this VFR has once out on the road,  yes,  it was good before,  now, wow, what a pinch in the ass,  it's even more fluid and harmonized, totally a great feeling.     

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Sweet! Still in for 2, but could do 1 now 1 later so others don't have to wait as long. Track/play bike is waiting right now since the Ducati is hogging the lift.

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RVFR... I'm def interested in a set for my 6th gen.  A few things I would need to know before committing.  Would there be bungs for the )2 sensors (I'm running a Rapidbike module and want to keep the auto tune),  How much of an issue would it be to adapt the outlet to the 06 Staintune pipe setup?  and would it have the brkt for bumper placement for the center stand.

 

Thanks,

 

Nick

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Nick,  those are  all good questions.  I have it to have 02 bungs available.  Yes to the bumper part for the center stand.  the only part that hasn't been addressed is the outlet for the 6th gen,   only because I'm working with 5th gens at the moment.  I know they fit the 6th as far as hooking up to the heads and all,  but from what I've seen, the outlet is in a different location. how much has yet to be determined actually.  When all said and done with what I have,  I'll be locating a doner 6th gen to play around with that,  then I'll know whats up. Thanks for the inquire.  

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11 hours ago, RC51Nick said:

RVFR... I'm def interested in a set for my 6th gen.  A few things I would need to know before committing.  Would there be bungs for the )2 sensors (I'm running a Rapidbike module and want to keep the auto tune),  How much of an issue would it be to adapt the outlet to the 06 Staintune pipe setup?  and would it have the brkt for bumper placement for the center stand.

 

Thanks,

 

Nick

Hey Jay that's some good news on the dyno re -run.

 I'm in the same position as Nick, also will you be doing a dyno run on Gabe's first system just to confirm parity?

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True Dual Headers!!! Can't flow any better than that, and our V4s might actually benefit more from that type of setup due to the V configuration (deeper sound too). Fabricating midpipes and mounting brackets for two mufflers while retaining the center stand and ensuring the dual exits are equal length would be the obstacles to overcome. Just brainstorming here.

 

But anyway, and idea came to mind recently. Those looking for a full system could ship to you their current slip-ons (including mid-pipe) to get a custom mid-pipe fabricated for perfect fitment, at a cost of course. That would simplify the full system route a bunch since you wouldn't have to worry about making mufflers and brackets.

 

 

 

 

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On 8/24/2017 at 5:33 PM, boOZZIE said:

Hey Jay that's some good news on the dyno re -run.

 I'm in the same position as Nick, also will you be doing a dyno run on Gabe's first system just to confirm parity?

 :goofy:  

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On 8/24/2017 at 9:03 AM, RC51Nick said:

RVFR... I'm def interested in a set for my 6th gen.  A few things I would need to know before committing.  Would there be bungs for the )2 sensors (I'm running a Rapidbike module and want to keep the auto tune),  How much of an issue would it be to adapt the outlet to the 06 Staintune pipe setup?  and would it have the brkt for bumper placement for the center stand.

 

Thanks,

 

Nick

 

5th and 6th gen have the same outlet configuration. The Two Brothers header has a slightly different outlet angle and will require modification to use a standard 5th/6th gen slip on. 

 

I am using a Two Brothers header, with a Two Brothers slip on. (much different than a Two Brothers full system). I had to cut the Two Brothers full system's mid pipe, cut the slip on and then merge the two together. The diameter and length was pretty much the same, but the angle was off by a few degrees.

 

What this means to you, I guess is still to be determined. Whether Gabe uses the the standard 5th/6th gen or two brothers outlet configuration....

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On 8/24/2017 at 9:29 AM, RVFR said:

Nick,  those are  all good questions.  I have it to have 02 bungs available.  Yes to the bumper part for the center stand.  the only part that hasn't been addressed is the outlet for the 6th gen,   only because I'm working with 5th gens at the moment.  

 

So, it'll work with a non-staintune slip on?  I've got a delkovic full system with a high exit. The can is fine, so I'd love to use it. It'll work?

 

Also, you said two o2 bungs, but is there also a single bung after the collector where it reads everything? Again, for rapidbike, but only running one wideband lambda sensor rather than the two stock narrow band.

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