How much power do U lose when going to a 240 kit?

[Duke1340]

How much power do U lose when going to a 240 kit ?

[09 busa guy]

i know a 300 kit is around 15% i had mine tuned at 150 then again i got 157 and i know stock is close to 180 give or take a few

[fremo66]

if u do carrozzeria 240 kit u might not lose since there alot lighter than stock

[mikepeavler]

6lbs of weight = 1 hp at least in moving the weight..

Rotation weight kills HP...but not sure how to calculate that...sorry

M

[m_ridgeway]

might talk to jonreed he had some deals on the "raceweight" 240 kits not too long ago.

[Fastfrog007]

You will DEFIENTLY noticed the difference. Ive got 2up and 1 down sprockets to help, but still notice the weight

[BigRod1300]

i know a 300 kit is around 15% i had mine tuned at 150 then again i got 157 and i know stock is close to 180 give or take a few

A jackshaft ( 2 chain ) 300 is NOT 15% but is 15 to 20 HP loss. Not sure about a 240 kit. Depends on the wheel you use other wise not much diff.

[09 busa guy]

well if stock is 180ish and my dyno is 157 i lost about 13 percent with a 300 kit

[BigRod1300]

well if stock is 180ish and my dyno is 157 i lost about 13 percent with a 300 kit

You IF stock...the only way to tell tru...is dyno before and dyno after. NO way a 300 kit lost more than 20 ish hp pending wheel style and chain adjustments!
When I first dyno the MULLET for custom map of my old one-off HMFs it had the 330 kit at that time. 1st pull was 128hp. Then well tuned and mapped to 150hp.....and its a genI. Figure stock GenI, full custom exhaust, BMC race filter, PCIII, and a custom map...so what did I loose? guessing 25hp ONLY. Converted to the OSD 330 ( SINGLE CHAIN ) redyno for a +5 hp and +5 torg.

[InfiniteReality]

I have a stock widened rear wheel for my 240 so I know I gained rotating mass while my swingarm is definitely lighter than stock. While I added the new wheel and chain, figured I'd go ahead and get a +2 black Driven rear sprocket. I honestly haven't noticed any HP loss, in fact my rear wheel seems to spin easier in 1st.

[BigRod1300]

The +2 in rear sprocket change kept the torgue up so you did nt notice anything. For a 240 kit....widening the stocker is the way to go over PM or RC billet wheels, eight savings.

[Tufbusa]

Added weight is minimal, it's the drag on the drive train that's the culprit robbing HP!