V Force 3 Reeds Question

[gasIdaho]

I have an 05' EC300 with the Carbon Pro Reeds. I've been wondering if I can convert to the V-Force reeds and if there is a benefit to doing so?

 

[GMP]

Yes and yes. Made a big difference in low end on my '03 250. Back then it was all home brew but now its easy, just get the '06/'07 manifold, boot and clamps, gaskets and the VForce. If you want max low end gains and like to lug the bike, you can get the previous generation VForce II and set the reed tension in the low position. Kent A has tested the VF2 set to low against the VF3 (non-adjustable) on his '06 300 and has stated the VF2 gives more low end. Try a search for more info.

 

[Kent A]

The VF2 set in low tension mode is a much better choice than the VF3. The difference is substantial. However is you move away from the low tension setting even slightly the VF2 will behave just like the VF3 and the bike will lack low end power.

Of all the different combinations of reeds available for the GASGAS bikes I'm willing to bet that nothing beats the VF2, set in low tension mode. I've made several engine modifications on my bikes(s) and the VF2 made the biggest difference.

Kent

 

[d2w]

And do the VF2 reeds require a new cage, or can they be snapped into the existing VF3 cage? Basically, what parts must be modified/replaced to go with the VF2s?

Thanks.

Dale

 

[GMP]

You need the VF2 reed valve assy to replace the RAD valve or the VF3.

 

[jimbolaya]

I noticed I have what I'd call a raspy stumble at super low throttle opening and I suspect it is reed tension. my 06 ec300 has the vf3 block. I will have to try the vf2 and see if I can get the super smooth lowend I'm searching for.
Could there be a relation to reed tension and lowend response?

 

[gasser]

Does anyone know the part numbers for the V2 cage and reeds and where you can get them? - Ken

 

[d2w]

I searched through the archives and came up with V2M05. A Google of that part number comes up with lots of retailers at around the $130 point.

Note: I have not ordered that part or used it on my GG, nor do I know if that's the only part one needs. So, your milage may vary.

Dale

 

[GMP]

Thats the correct part #. I used it in my '03. I do not know if Motassinari is mfg. the VF2 any more, so supplies are probably limited to old stock. They do however have replacement reeds.

The OEM GG manifold for the VF3 has a smaller oval opening that will not match up perfectly to that of the VF2 cage, which is larger and more rectangular. I have no experience on how this will affect performance, as I made my own for the VF2. I have mine off this week for inspection so I'll see if its possible to port the manifold a bit for a better match.

 

[d2w]

Hmmm ... I may reconsider this modification if it requires modification to the manifold. I don't see a seperate manifold part avialble from the GoFasters site if one wanted to go back to the VF3 reed cage if things didn't work out. And I don't particularly want to drop $350 on a new complete manifold/reed assembly.

And I think is was on the TalkingSmack forum that Kent A. was postulating that the VF3 may actually work like the VF2 on low tension mode at low throttle openings. Dunno.

Food for thought (and confussion). Sorry.

But the RB Squish mod is a definite (when winter comes, or my hernia operation , whichever is first).

Dale

 

[GMP]

You don't have to modify the manifold, as the opening is smaller than the opening in the VF2. Its just that we don't know if any potential gains will be negated by this mismatch. All you have to do to try it is bolt in a VF2 in low tension mode and compare the performance to the VF3.

Kent has tested both and stated that the VF3 performs like the VF2 in high tension mode in his EC300. Our (his and mine) results with the VF2 in low tension mode were identical, nice low end gains. "Lacking" low end power is relative. Kent likes a lot of low end, I like just enough. The VF3 does not kill low end, its just that the VF2 has the capability to optimize it.

Here is a photo of the custom manifold with a VF2 I designed and built for my '03 EC250 back in '04. Its a little tough but you can see the larger area of the rear of the VF2 through the spigot.

 

[Kent A]

The attached pictures show the difference between the VF2 and VF3 reed cages. The VF2 intake opening is slightly larger than the VF3 but I don't think that the mismatch will cause much of a problem.

I really disliked the way the VF3 made my bike run compared to the VF2 in low-tension setting.

Kent