gonecheenin

Excellant point - surely he still has the specs.

Well that's disapointing. Hopefully one of the five will turn up used at some point.

Is it bored out with a shaved head? I had a Banshee bored to .080" with a .025" shaved head and the pistons were actually hitting the spuish area of the stock chambered head. Needed to send the head out to be cut larger for it all to work correctly together.

Awesome! What sort of porting work was done?

Get anymore feed back on the high volume 2 into 1? Got any more made? Anyone ever get any Dyno numbers or comparisons down on paper? I tried the Pro Circuit twins just to prove to myself I wasn't missing something and I was right. Sure they pull nice & hard once the rev's come up to the 4-5000 range, but off the pipe down in the 1000-4000 rpm range where I need to depend on them to make torque they are gutless just like most twins. So it's back to my 2 into 1 Dynoport for now; but I'd love to make some more topend for wheelspeed on the big long coal hills without these modified port timing Vito's superstock pistons (or porting similar to them) which weakens a bit of my off idle torque unless I bring my compression up more, plus I'd possibly like to go to a 4 mil someday; so I'm still hoping this high volume Shearer 2 into 1 could be my answer!!!!!

I run full thick aluminum skids on the A-arms, belly, and shock linkage/rear axle housing & sprockets/disc - AC racing I believe though I remember hunting hard for the rear skid to make sure I got a full coverage one. I ride mostly all trails, boney hill climbs, woods, etc.... And out here in PA we get ALOT of rocks in the trail so I utilize those skids quite frequently!

I know this is a real old thread, but do you happen to have the rest of the lower end power curves down to basically right off idle for those dyno tests?

Did you ever get a chance to grab some of those recomended twins for your comparison? I shot you a PM with my Cell#, I'd really love to talk to you in detail about how the Shearer 2-1 compared to the Dynoport if you don't mind?

I'm sorry but I've tried a few other twin pipe setups (FMF Fatty, Pro Circuit, T5's, and soon Trinity Stage IV's on a quad with Stage III port work and twin Keihin 35mm carbs - kinda excited to see how that one runs) and not one of them would work very well for my style of riding. And even on the smaller hills the twins took ALOT of clutch abuse to go places I went without ever touching the clutch lever on my 2 into 1 piped Banshee. And my Dynoport 2-1 pulls much harder and a touch longer than the stock twins did on the top end. Sure aftermarket performance twins pull like mad on the top end compared to stock or the 2-1 Dynoport, and some of them even pull great from what I would call mid on up, but not one of the setups I've had experiance with wasn't garbage from 4-5000rpm down to idle. And when you top hills at times just above idle in second gear like I do, that Dynoport 2 into 1 torque is a life AND quad saver! I need to find a chassis dyno to run my bike on, something just doesn't make sense with how mine works compared to how some of you say yours did. And in case you think I'm just stubborn - If I ever do come across a set of twins that can make the power down low that I need, I'd buy them in a second because I'd LOVE to have that topend scream - but I simply can't and refuse to give up the super low end torque of the 2 into 1 pipe & twin carb setup for the riding I do. BTW: The Dynoport takes a leaner jetting than twins most of the time (Hell, Rich even recommends stock Jetting which is TOO lean from my experiance!), so if your twins ran that great without changing jetting, you probably had the Dynoport 2-1 jetted WAY to fat. Also I've found through my other buddy's experiance's the 2 into 1 intakes that the combo of 2-1 pipe AND intake seems to really strangle the potential on the pipe.

Good thing you didn't keep running it then.

X2 - this is the way I feel about my Dynoport 2 into 1.

I get the feeling that's a waste of my time, but thanks anyway.

I also have 4 degree's advanced timing and V-Force 3 reeds

I'm from western PA and have been doing research on this new Shearer 2 into 1 pipe (to possibly replace my much loved Dynoport 2 into 1 with something that makes a bit more topend power without sacrificing ANY of my needed off idle torque) without much success finding it for sale anywhere. Could you direct me to where I can buy this? Snopczynski; Can you post (or direct me to where you have posted previously) these test numbers you keep talking about? I'm curious cause I've had experience with alot of the twin pipes you've quoted and have seen nor felt any twins that would pull out of the basement like my Dynoport does? Thanks!