boOZZIE

Not sure if this would help any, just measured the cross member on the c stand and on the 6g it is 2.5mm less than the sides

Hey sfdownhill, 

Has anyone done a video of those music makers 😆

4 hours ago, GreginDenver said:

I'm probably wasting my time saying this but here we go anyway:  I have about a decade of experience with motorcycle fuel injection systems that use Bosch wide band O2 sensors mounted at a level angle.  On both of my do-it-yourself fuel injection motorcycles it turned out that I needed/wanted to mount the O2 sensor at a level angle.

 

So 10 years ago when I was building up my first FI motorcycle I was asking/worrying about this exact issue.  I ended up having the opportunity to have a back-and-forth email dialog with a couple of Bosch engineers from the division that produces these sensors.  You wouldn't believe how unconcerned these two guys were about the effect of mounting one of their O2 sensors at a level angle.  They basically said that the "mounting recommendation" drawing was produced because it had to be done, a requirement demanded by the management. 

 

Their opinion was that as long as you don't mount the sensor at a downward angle you won't have any problems.  My experience with my FI project motorcycles bears this out, no problems at all.  Every so often I remove the sensor from the bung to do a "free air" recalibration of the O2 system and the sensor always looks good, just light carbon coating that you would expect.

Im thinking that a downward angle is needed so that if there is moisture on the sensor and the bike is hibernating, then the water can drip off.

Increased wear/shorter lifespan. 

They can handle some water/moisture as is evident on cold morning start ups with drops of water coming out the exhaust.

Ideally the sensor should be on the top but that's not possible or practical to get at. So if they can be clocked around a little, that's all good.

16 hours ago, HighSideNZ said:

Looking good.

One thing that people may need to be aware of is the bottom O2 bung is quite level so you need to make sure it cannot get and hold water vapour during start/warm up, especially when being warmed up on the side stand.

More angle on the next batch?

18 hours ago, sfdownhill said:

Hi MBrane - if wade sticks to his commitment to hand over completed headers next Thursday, we can set up a time for you to pick up yours. If the 5/8 gen muffler fitment exercise hasn't yet taken place, bring your pipes, and we'll see how things line up.

 

 

This is prototype 2 packed and ready to ship to VFRD member carlgustav in Alabama. Once again I am confronted by my poor before-and-during photo-taking habits. That significant hunk of cardboard is 36x16x16" to allow minimum 2" on every side of the headers for protective packing material.

 

Do you have the boxed weight aswell.

I need that for some quotes on int. shipping.

I think those dimensions are  good, from memory max. was 95cm x 44cm x 44cm

Hold off on purchasing these, we are trying to put a deal together so they come with the headers 

....face down in the position 😆

^^

(this also explains why the dual-path air box was dropped in the VTEC versions). 

Umm no, only the latest 8g has done away with the flapper BS, and still has dual path.

Check a parts fiche for each gen (5,6,8)

On 3/7/2019 at 5:29 AM, MooseMoose said:

So, silly question. Is the big mouth K&N worth it over a piper cross?

 

Right now I have a gently used small mouth K&N in my toolbox and a pipercross in the bike (it's a long story). Don't know that either made a lick of difference, but I had been led to believe the piperX flows a little more air than the stock and smaller K&N. Am I wrong in that assessment?

 

Just thinking that getting another air filter might be a fool's errand if the difference is only slight.

I've got the same filters, small k&n and piper cross. 

I clean 1 and put the other in while the 1st is drying . That way there is no downtime.

I wouldn't bother getting a third larger filter

my 2c

Hey sfdownhill, 

Any reply from K&N tech support about the big mouth airfilter, was there a solution for 6g center stand stop and what was Wade's view on 3 bungs? 

Cheers

Just wondering, doesn't matter either way,   are you doing a dyno run with the  finished mandrel bent headers on the 5g / 6g with o2 sensors and RB or PC,

Or just leaving it at that?

"Jozef took the bike 'behind the curtain', as Attack's shop is off limits to customers" . 

 Booooo, I could understand recording equipment, but gee whiz, paying that sort of $$$ and not letting you'll watch🖓

Were you able to hear her scream at least

Top work gents

Do you have before and after pc3 maps to compare what changes were made?

Cheers 

As you are only needing the seals to be tight 4 dyno run, can clamps be used on the joins

2 hours ago, thtanner said:

6 pages already.

 

Honestly this needs 2 threads. An official update/build thread, and the discussion thread. Otherwise I don't know if I want to bother sifting through multiple pages to try to find the updates. 

Yeah probably,

For updates on the build though refer to the dates on the op, or skim thru looking for pics of exhausts....exhaust on m/c...

(not yet)...exhaust on m/c on dyno... (not yet)...😀... (not yet)

^^what highside said

Re 4 o2 sensors, 

I think that's the best tuning option for that bike but how does that effect the end  user that will have a different setup? 2 stock + 1 wideband 

 I will not be buying 4 MTB modules. Maybe if I was going down the path of diff cams , bigger pistons etc.

A Flipping prototype 

Thanks highside, yep just using Mohawk's pic to visually check the posi of MTB o2 sensor. 

OP

header will have two O2 sensor bosses at 2000-2009 OEM header's O2 sensor locations: one O2 sensor boss on secondary tube after left front/left rear primary merge, one O2 sensor boss on secondary tube after right front/right rear primary merge

Cheers  

3 hours ago, MooseMoose said:

 

Yes. Same as for the 5th gen 00-01 bikes.

 

The sensor goes in separately, after the merge.  There's a checkbox on the software to fudge the data if you leave the stock sensors in place, and they remain in place so nothing silly happens at the ECU.

 

On my 5th gen I just had a local shop pop a bung in the mid pipe as close down stream of the merge as I could fit it.

In this position?  Re Mohawk's pic p3

Bit of memory loss, for 6g, The MTB wideband sensor is in addition to the 2 factory O2 sensors?

😀No no I think it's a valid point, as I see it, most of us that are in this consider the/our vfr (s) as keepers and would not  want to be going thru this process again in the years ahead.

Seb, would nitric/HF be the preferred option? 

Sfdownhill, yep the choice of response is upto you, whatever is easiest. 

1 minute ago, sfdownhill said:

Sorry to have been away - I had to get my heart restarted after hearing the cost of getting a set of pipes to AUS.

 

I’ll run a quote from USPS and through my Fedex account and see what they come up with.

I got reasonable quotes thru myus shipping however they don't include postal clearance(whatever that is?)