I'm trying to find some Shearer pipes for my bike. I'm definitely getting a 68mm cub. Depending on how my play money goes, is depending on whether I stick with the 4mil, or get a 10mil. I intend on building the 10mil, but cash is tight. Now, if I buy big bore pipes, and I end up staying with the 4mil, would they hurt the performance? I know, the more your engine can breathe, the easier it is to make horsepower. But I'm thinking the big bores might not be enough back pressure for the 4mil. Any thoughts would be appreciated.
Shearer Pipes
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QUOTE (2001Stroker @ Nov 28 2008, 03:12 PM) index.php?act=findpost&pid=17693I'm trying to find some Shearer pipes for my bike. I'm definitely getting a 68mm cub. Depending on how my play money goes, is depending on whether I stick with the 4mil, or get a 10mil. I intend on building the 10mil, but cash is tight. Now, if I buy big bore pipes, and I end up staying with the 4mil, would they hurt the performance? I know, the more your engine can breathe, the easier it is to make horsepower. But I'm thinking the big bores might not be enough back pressure for the 4mil. Any thoughts would be appreciated.
theres acouple of people on here that ran bb shear oof's on there 4 mils... fouledout421... badaszbanshee ... austin oneal..
but i believe all those motors are drag ported cubs.. i have a set of bb shear oof's as well for my 4 mill.
i havent tryed them yet, im runnin bigboybanshee's ggr oof sb pipes right now.
are u wantin oof or in frames ?
theres acouple of people on here that ran bb shear oof's on there 4 mils... fouledout421... badaszbanshee ... austin oneal..
but i believe all those motors are drag ported cubs.. i have a set of bb shear oof's as well for my 4 mill.
i havent tryed them yet, im runnin bigboybanshee's ggr oof sb pipes right now.
are u wantin oof or in frames ?
QUOTE (Kawiking @ Nov 28 2008, 04:21 PM) index.php?act=findpost&pid=17694theres acouple of people on here that ran bb shear oof's on there 4 mils... fouledout421... badaszbanshee ... austin oneal..
but i believe all those motors are drag ported cubs.. i have a set of bb shear oof's as well for my 4 mill.
i havent tryed them yet, im runnin bigboybanshee's ggr oof sb pipes right now.
are u wantin oof or in frames ?
Inframes. I don't drag race like you guys, so there's no need to get oof's. Don't cubs come somewhat drag ported? I know you can get more out of them, but they should breathe enough to keep up with those pipes, right?
but i believe all those motors are drag ported cubs.. i have a set of bb shear oof's as well for my 4 mill.
i havent tryed them yet, im runnin bigboybanshee's ggr oof sb pipes right now.
are u wantin oof or in frames ?
Inframes. I don't drag race like you guys, so there's no need to get oof's. Don't cubs come somewhat drag ported? I know you can get more out of them, but they should breathe enough to keep up with those pipes, right?
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QUOTE (2001Stroker @ Nov 28 2008, 03:31 PM) index.php?act=findpost&pid=17695Inframes. I don't drag race like you guys, so there's no need to get oof's. Don't cubs come somewhat drag ported? I know you can get more out of them, but they should breathe enough to keep up with those pipes, right?
if ur not drag racin then go with sb for a 4 mi, bb for a 10 mil
if ur not drag racin then go with sb for a 4 mi, bb for a 10 mil
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The "factory" casting in the cubs is technically a drag port. When we have them ported, they're just opened up a little more, but not a tremendous bit.
IMO, 4mil cub, w/ no extra porting, I would go Shearer small bore. You could still use them for the 10mil too, you just won't have the "best" you could get with it...but since you don't drag race, I think the small bores would be a good pipe to go with....
My 4mil cub was originally setup with small bore, inframe shearers, cleaned up (before I bought it) and it flat out RIPPED...
IMO, 4mil cub, w/ no extra porting, I would go Shearer small bore. You could still use them for the 10mil too, you just won't have the "best" you could get with it...but since you don't drag race, I think the small bores would be a good pipe to go with....
My 4mil cub was originally setup with small bore, inframe shearers, cleaned up (before I bought it) and it flat out RIPPED...
I really would like to build the 10mil. It's high on my list. Just don't know if I will have the funds to do it, since I will have to get a new crank and do some machine work on the cases. I found a steal on some BB in frames that I don't wanna pass up. That's why I'm asking. If I were to get them, and ended up just building another 4mil, would the BB's hurt performance? I am gonna get the ports cleaned up before I build though.
Just read your post, bigboy. I guess I'll have to pass on the deal, and see what motor I build. Just so you guys know, I mostly ride very fast/aggressive trails and hillclimb. So, I'm guessing the SB would be the best route for me.
Just read your post, bigboy. I guess I'll have to pass on the deal, and see what motor I build. Just so you guys know, I mostly ride very fast/aggressive trails and hillclimb. So, I'm guessing the SB would be the best route for me.
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QUOTE (2001Stroker @ Nov 28 2008, 03:45 PM) index.php?act=findpost&pid=17698I really would like to build the 10mil. It's high on my list. Just don't know if I will have the funds to do it, since I will have to get a new crank and do some machine work on the cases. I found a steal on some BB in frames that I don't wanna pass up. That's why I'm asking. If I were to get them, and ended up just building another 4mil, would the BB's hurt performance? I am gonna get the ports cleaned up before I build though.
Just read your post, bigboy. I guess I'll have to pass on the deal, and see what motor I build. Just so you guys know, I mostly ride very fast/aggressive trails and hillclimb. So, I'm guessing the SB would be the best route for me.
On a 4mill it really depends on who you get to do the port work. You can port a 4mill cub to like either big bore or small bore shearers. I really don't think you would lose any power going with the big bore pipe if you found a great deal, but the you really should be asking the person that's going to port the cylinders for you. I've run both and like the bb better but that's just me.
Just read your post, bigboy. I guess I'll have to pass on the deal, and see what motor I build. Just so you guys know, I mostly ride very fast/aggressive trails and hillclimb. So, I'm guessing the SB would be the best route for me.
On a 4mill it really depends on who you get to do the port work. You can port a 4mill cub to like either big bore or small bore shearers. I really don't think you would lose any power going with the big bore pipe if you found a great deal, but the you really should be asking the person that's going to port the cylinders for you. I've run both and like the bb better but that's just me.
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Many swear I should be running small bore on my bike..including Matt Shearer himself (10 mil cub...) but it runs fine on big bore...
I'm hoping to test my bike at the track SB vs. BB..I didn't get a chance to in October at the track...next year I will.
I'm hoping to test my bike at the track SB vs. BB..I didn't get a chance to in October at the track...next year I will.
QUOTE (Kawiking @ Nov 29 2008, 12:47 AM) index.php?act=findpost&pid=17719if ur goin with jeff, he s goin to tell u to run shears... he ports for shear pipes.
give jeff a call or pm him and talk at him about a port job and u runnin cpi's
Yea, I'll call him. But I ain't going all out with it. He's just going to touch up the casting edges for me.
QUOTE (Kawiking @ Nov 29 2008, 12:48 AM) index.php?act=findpost&pid=17720i hadnt seen what kind of carbs ur runnin
Well, right now I have 35PJ's on my 4mil with 18cc domes and 185psi, but prolly go with 38PWK's or 39PWK's on the 10mil. Keeping it on race gas though. I would like to keep it somewhere around 180psi.
give jeff a call or pm him and talk at him about a port job and u runnin cpi's
Yea, I'll call him. But I ain't going all out with it. He's just going to touch up the casting edges for me.
QUOTE (Kawiking @ Nov 29 2008, 12:48 AM) index.php?act=findpost&pid=17720i hadnt seen what kind of carbs ur runnin
Well, right now I have 35PJ's on my 4mil with 18cc domes and 185psi, but prolly go with 38PWK's or 39PWK's on the 10mil. Keeping it on race gas though. I would like to keep it somewhere around 180psi.
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I run bb shearers on my 10mill cub and now have a set of hand rolled Wk pipes to try out on it
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QUOTE (drag05banshee @ Nov 29 2008, 07:06 PM) index.php?act=findpost&pid=17759i also just put a 10mill cub together and have sb cpi inframe i need to get some outa frame Shearer's but dont know if bb or sb...what do u guys recoment..
if it where me I would go bb due to the head pipe being bigger in that area
if it where me I would go bb due to the head pipe being bigger in that area
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