tpo beast not compatible with 4v bikes?!?!

[scooby]

typically, the loss or gain of power deals with resonance in the intake tract, similar to tuning an exhaust.  Power loss probably isn't going to be noticable in "seat of the pants", but would show up on a dyno or racetrack.  Since monsters arn't track bikes, who cares .

I like the pods myself.

+ 1...

[hitman87]

Bill in OKC do you have pics of your setup? and you say that the 4v bikes have larger intakes? the 2v tpo intakes look to be the same diameter as the stock s4r intakes as scooby said he mated them up just fine

did anybody see the red s4r that was on the cover of robb report motorcycling about late 07 ? it had TB on it with no outside filter... the airbox was removed and the red TB could be seen through the frame.

[scooby]

I'll have more pix of mine next week - scoot is in the shop for some minor work right now...

[Bill in OKC]

Bill in OKC do you have pics of your setup? and you say that the 4v bikes have larger intakes? the 2v tpo intakes look to be the same diameter as the stock s4r intakes as scooby said he mated them up just fine

did anybody see the red s4r that was on the cover of robb report motorcycling about late 07 ? it had TB on it with no outside filter... the airbox was removed and the red TB could be seen through the frame.

Here are some pics of my S4Rs - The S4rs has 50mm TBs and I think the 2-valve bikes have 45mm TBs.

[hitman87]

nice set up. that looks like the route i will go. get the 2 pods and the crankcase filter. grab a pc3 and get tuned up... do you have part numbers for the filters including the crankcase one, also what did u use to cut the TB's?

[Bill in OKC]

I got the TPO crankcase breather kit - I don't have a number for that.  The pods are  K&N FILTER RC-1252  This part number comes with two filters.  If you get one-at-a-time it is p/n RC-1250.  I bought the stacks on ebay - didn't want to cut my stock ones up.  I used a dremel with a fiber reinforced cut off wheel - then a file to smooth it off.  The ridge makes a good cutting guide.  It fits really well - the filter neck fits over the ridge and it then pushes down on the springs that retain the stack/pod adapter so after you tighten the hose clamp it is not going anywhere.

[hitman87]

Bill in OKC the K&N website list those part numbers as having a 57mm inner diameter for there flange where as the TB are 50mm on the s4r... if you say that they fit fine then i will run with it.... they also have some that have a 51mm inner diameter but the cones are an inch shorter than the ones you have on your bike.... i want the larger cone...

[Bill in OKC]

I measured the outside diameter of the cut down stack near the middle of the area where the filter fits with a dial caliper and it was almost exactly 2 1/4".   The TBs are measured by their bore size so the difference must be the thickness of the metal.  You can measure the diameter of your stacks before buying filters (and before cutting them too) to see if there might be a difference.