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Thread: 98 R1 fork swap

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    Quote Originally Posted by CandyRedRC46 View Post
    Very interesting. That's totally different that the 6th gen ignition mapping. So you should mainly feel the benefit of added low end, partial throttle torque. With a little bit of added mid range and full throttle top end also.

    PS be sure to have premium fuel in the tank before riding.

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    Yeah I always run with premium, I will be getting her professionally tuned in a little while once I've made up my mind about copying some of Mohawk's mods.


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    Ooo love map photos, Nice, this gets me rethinking a couple things, yet did you add O2s? I read that the 5th gen does not care for much in the way of advancement less maybe a degree or two in the mid range IDK read that some where Hope you can get to a Dyno, be great to see how it all plays out.
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    Quote Originally Posted by RVFR View Post
    Ooo love map photos, Nice, this gets me rethinking a couple things, yet did you add O2s? I read that the 5th gen does not care for much in the way of advancement less maybe a degree or two in the mid range IDK read that some where Hope you can get to a Dyno, be great to see how it all plays out.
    Nah no o2 sensor, might add one in future if I get some stainless headers. Hopefully I'll get to a dyno later this month, I'll probably post up a new thread about it then.

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    ;) awe.. just might be able to help on the header part, if. Just saying stay tune.
    Opportunity is where you anticipate it.

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    Quote Originally Posted by RVFR View Post
    ;) awe.. just might be able to help on the header part, if. Just saying stay tune.
    I have been watching the header threads with great interest, you basically replicated the 2 bros pipe right? which cylinders are linked up? In line (1+2, 3+4 linked) or crossed over (1+4, 2+3 linked)?

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    Yep the way it's laid out it is a 4+3, 2+1
    Opportunity is where you anticipate it.

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    Quote Originally Posted by RVFR View Post
    Yep the way it's laid out it is a 4+3, 2+1
    Sounds good, very much looking forward to dyno figures

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    Me too, hopefully in a couple weeks or so I'll know what's what. ;)
    Opportunity is where you anticipate it.

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  12. #69
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    This is the 6th gen ignition mapping, for comparison. Seems Honda really underestimated how much timing can be added while in two valve or they just leaned it out to the limit instead​.

    The other thing that's interesting is rapid bike pulled a degree off the top end on the sixth gen, but added a degree to the top end on the fifth gen.
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    Quote Originally Posted by CandyRedRC46 View Post
    This is the 6th gen ignition mapping, for comparison. Seems Honda really underestimated how much timing can be added while in two valve or they just leaned it out to the limit instead​.

    The other thing that's interesting is rapid bike pulled a degree off the top end on the sixth gen, but added a degree to the top end on the fifth gen.
    Are you running any airbox mods Candy? Apart from the Pipercross? Also how is the Pipercross? I read some study saying the flow wasn't great but it seems like the sheer surface area would make up for it. I'll try find the study.

    Edit: https://neoriders.wordpress.com/2015...r-filter-test/

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    The pipercross is a tad bit harder to fit than say a K&N, but it's not that bad. RVF said that he was having some​ issues fitting the filter into the base of the air box first, but when he tried to fit the filter to the top first and then the base, it went right in.

    I could imagine the filter media itself on the pipercross being slightly more restrictive than kn or bmc and filtering better, but like you said, the surface area would totally negate any flow losses.



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    Quote Originally Posted by CandyRedRC46 View Post
    The pipercross is a tad bit harder to fit than say a K&N, but it's not that bad. RVF said that he was having some​ issues fitting the filter into the base of the air box first, but when he tried to fit the filter to the top first and then the base, it went right in.

    I could imagine the filter media itself on the pipercross being slightly more restrictive than kn or bmc and filtering better, but like you said, the surface area would totally negate any flow losses.



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    So no other airbox mods then? Might have to pick up a pipercross...

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    I did the normal snorkel, flapper and pair deletes, then swapped the velocity stacks out for R6 velocity stacks and port matched the stacks/air box/throttle bodies together.

    Later on I over bored the throttle bodies to 38mm and port matched the heads to them. The first mod was definitely worth it, but the over bored throttle bodies was not worth the time/money/effort at this state of tune.

    I don't think the factory throttle bodies are a restriction, until after adding cams/compression/overbore pistons. The factory velocity stacks definitely can be improved upon at this power level though.

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    Quote Originally Posted by CandyRedRC46 View Post
    I did the normal snorkel, flapper and pair deletes, then swapped the velocity stacks out for R6 velocity stacks and port matched the stacks/air box/throttle bodies together.

    Later on I over bored the throttle bodies to 38mm and port matched the heads to them. The first mod was definitely worth it, but the over bored throttle bodies was not worth the time/money/effort at this state of tune.

    I don't think the factory throttle bodies are a restriction, until after adding cams/compression/overbore pistons. The factory velocity stacks definitely can be improved upon at this power level though.

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    6th Gen has the two short and two long stacks correct? Was that due to the Vtec or just an evolution in airbox design? I like the results of Mohawk's double stack setup but dont really want to butcher the top of my airbox at the moment. Hows the low end with the R6 stacks? guessing more top end?

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    The 03-05 R6 velocity stacks still retain the staggered arrangement. I think staggered is meant to spread the power over a larger area. They are just a few mm's shorter and wider than the vfr stacks, for a little less bottom end and a little more top end.

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    Quote Originally Posted by JIMLARCH View Post
    Thats a lot of weight. Seems the gen 6 has a lot more weight that you can lose compared to my gen 4. Don't disagree that removing top weight such as gas does make a big difference. That's why on a really twisty road I run with minimal gas in the tank. But even losing 50 lbs only gets you say 7 HP. But if you're happy with the end result, that's all that counts. As I said I respect the inventiveness.
    Oh my half tank rides seem to work for me too-that 06 tank weights a ton-filled with gas -forget turning slow-otherwise down you will go, oh my carbon slip on saved almost 20 pds and my light weight battery maybe 4 pds- it still works great after 2 yrs old. carbon canister-saved 2 pds-off.
    Wolf riding today and my black 06
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    Quote Originally Posted by I0seb View Post
    So no other airbox mods then? Might have to pick up a pipercross...
    on a sort of a side note here, FWIW. What I noticed here during the swap from k-n to the Piper was, yes there's a lot more filter area with the piper, one thing that caught my eye was the piper is also thicker, not by much, hence a slight concern that the piper may actually cover or come into close contact with the V stacks. if so, the area of filter media may be mute, as the air is drawn through a limited area. from my first impression the KN has more V stack clearance. But since i can't see the other side after installed that too could be nothing. I read Mohawk made a new lid when he added his version of V stacks. Now where'd I see that at?
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    well this was one of the topic threads from VFRD http://www.vfrdiscussion.com/index.p...stacks/&page=3
    Opportunity is where you anticipate it.

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    That's weird, my pipercross actually curved upwards, giving the vstacks even more room to breathe than the KN.

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    Quote Originally Posted by RVFR View Post
    well this was one of the topic threads from VFRD http://www.vfrdiscussion.com/index.p...stacks/&page=3
    Yeah Mohawks Yoshi stacks are pretty dope, only problem is having to butcher the airbox to get enough clearance from the air filter to fit them.

    I can't help but wonder honestly how much performance of get from mods like these, I'd kinda hope the Honda engineers knew what they were doing when they designed it originally :P

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    I too would like to believe those at Honda knew what they where doing , no doubt they did. Just sad to say the VFR wasn't set up to be a CBR competitor after the RC45 era, it kinda fell of the grid, so pretty sure those at Honda just made do. There's a lot of little things Honda decided it wasn't worth it, even though they have had the parts on the self, cough cough suspension for one.
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    Quote Originally Posted by RVFR View Post
    I too would like to believe those at Honda knew what they where doing , no doubt they did. Just sad to say the VFR wasn't set up to be a CBR competitor after the RC45 era, it kinda fell of the grid, so pretty sure those at Honda just made do. There's a lot of little things Honda decided it wasn't worth it, even though they have had the parts on the self, cough cough suspension for one.
    Yeah it does make me sad that the vfr doesn't get the attention it deserves. If the rumours about Honda's upcoming v4 superbike are true and it's cheaper than an Aprilia RSV V4 I'll buy it in a heartbeat!

    I might hold off on velocity stacks till the dyno, see if there are any holes in the powerband.

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    ^ what I'd do. I have it to do as well, thing is as it goes I keep adding things, in that I wouldn't know what gains or not with what, that and none are simple plug and play, taking the air box off playing around, putting it back could take all day then there's the dyno tom foolery. LOL I need a dyno in the garage. ain't this fun ;)
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    Quote Originally Posted by RVFR View Post
    ^ what I'd do. I have it to do as well, thing is as it goes I keep adding things, in that I wouldn't know what gains or not with what, that and none are simple plug and play, taking the air box off playing around, putting it back could take all day then there's the dyno tom foolery. LOL I need a dyno in the garage. ain't this fun ;)
    Sadly no rapid bike tuner near me as far as I know, might be able to get it dunked to check power though, would be interesting to see what gains it gets with the standard map..

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    Finally got the brakes bled, took forever, ended up using a homemade vacuum bleeder made out of a plastic bottle

    Also got the steering lock working which is awesome, had to grind down the steering stops a few mm but works great!

    And finally got a set of rim decals all the way from Bulgaria, quality is great, well worth the wait on international shipping.








    Sadly it always seems two steps forward one step backwards, I've had some electrical gremlins pop up :(

    Occasionally the right headlight will shut off while the left is still active, the indicators also take a while to come on, almost as though they are "warming up"... weird

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    Nice touch there with the wheel decals. I'm normally not a fan, but these work, ;) must be the white rim thing huh.
    Opportunity is where you anticipate it.

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    Probably dirty ground connections

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    Quote Originally Posted by CandyRedRC46 View Post
    Probably dirty ground connections

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    Wish I could check but...



    Key snapped off in the lock :(

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    O.... &^%$#@!
    Opportunity is where you anticipate it.

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    I've regained access to the bike, what should I be checking re the turn signals?

    EDIT:

    Just to add some more info, I took apart the turn signal switch and cleaned it, no change. The turn relay ticks fine but the indicator doesn't come on, seems to mainly affect the left hand side.


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