34MM Keihin vs. 38 or larger

[SLORYDER]

OK, here's my setup. 521 Cheetah engine. Sending to RDZ for complete tear down, cut tranny, porting, new RDZ big bore pipes. I currently have 34mm Keihin's. My question is; how much will I benifit from changing to 38, 39, or larger carbs...I asked the guy at RDZ, and he said there was power to gain from going bigger on carbs, and changing to drag pipes....Never really stated any numbers or anything like that..So does anyone have experience with different carbs on a big motor..Please post your experience. I don't really want to spend money on carbs, filters, intakes if it'll only net 2 or 3 horsepower.

 

Thanxx, Marcus

Edited August 18, 2008 by SLORYDER

[rb0804]

im sure that the bigger carbs will net you more power, especially with the drag pipes, i cannot however quote you any magic numbers either. If your planning on draggin only, those 34's are gonna restrict that huge motor. in short, carbs are worth the upgrade, but if you cannot afford it now, you can always add em later.

[SLORYDER]

im sure that the bigger carbs will net you more power, especially with the drag pipes, i cannot however quote you any magic numbers either. If your planning on draggin only, those 34's are gonna restrict that huge motor. in short, carbs are worth the upgrade, but if you cannot afford it now, you can always add em later.

Yeah I was also considering boring them, 1.5 to 2 millimeter increase may not do much tho...I noticed the bike had huge midrange but did not pull out very far on top...figured it may have been the Trinity Stage IV's, dunno...Anyone else???