[JP374]

Ok I have a 448cc R motor (pilot cylinder) I have been running a 44mm lectron on alky. My ? is do you think I am under carbed w/ this size CC. I was thinking of getting rid of the 44mm for a 48mm would it be beneficial?

Thanks, JP

 

[jadleybray]

QUOTE (JP374 @ Jun 1 2009, 09:10 AM) index.php?act=findpost&pid=44839Ok I have a 448cc R motor (pilot cylinder) I have been running a 44mm lectron on alky. My ? is do you think I am under carbed w/ this size CC. I was thinking of getting rid of the 44mm for a 48mm would it be beneficial?

Thanks, JP

JP, there are different theories on intake velocity vs volume. Personally, the 44 sounds small to me. I run a alky 44 on my 313cc honda.

 

[bubba297]

Yep, and we run a bored 44 on our gas 370. If I could get a bigger manifold to fit a bigger carb I would. Go big JP, that top end should eat it up.

 

[JP374]

Thats kinda what I have been thinking.... Thanks for the input!

 

[matts]

Hondas like the big carbs. I've got a friend that runs a 44mm lectron on a 270, lol. I'm running a 50mm lectron on my 431 Puma and it loves it.

 

[clubg]

QUOTE (JP374 @ Jun 2 2009, 09:19 AM) index.php?act=findpost&pid=44943Thats kinda what I have been thinking.... Thanks for the input!
JP i wudnt go anything less than a 50mm, im running a 50mm with 3 PJs on my 452cc rotax and shes soaking it all up.

 

[JP374]

Ok, Thanks for the input guys. Now im curious as to how much I will pick up from goin bigger??

 

[koolguyson]

QUOTE (JP374 @ Jun 11 2009, 05:13 PM) index.php?act=findpost&pid=46199Ok, Thanks for the input guys. Now im curious as to how much I will pick up from goin bigger??

I wouldn't go bigger than a 48. Yeah, you might gain a couple hp with a bigger carb, but chances are you aren't going to be able to keep it in tune long enough to make use of it. Remember, the bigger the carburetor, the harder it will be to tune it.

 

[homdaddy]

i ran a 48 on my polonda 440 i started with a 41pwk and ended up with a 48 from packard

 

[JP374]

QUOTE (Koolguyson @ Jun 11 2009, 10:20 PM) index.php?act=findpost&pid=46209I wouldn't go bigger than a 48. Yeah, you might gain a couple hp with a bigger carb, but chances are you aren't going to be able to keep it in tune long enough to make use of it. Remember, the bigger the carburetor, the harder it will be to tune it.
Yeah thats what im thinking 48mm should be plenty

 

[bubba297]

Just remember, if you start with the 48 and want more, good ol Tim at Titan can bore that baby for you!

 

[Asphalt330R]

QUOTE (bubba297 @ Jun 12 2009, 11:16 AM) index.php?act=findpost&pid=46234Just remember, if you start with the 48 and want more, good ol Tim at Titan can bore that baby for you!

Can a lectron carb be bored out? If so how much?
Thanks

 

[JP374]

I was told 2mm bigger than what you have, 44mm to 46mm