alloy/steel crank pulley anyone fitted one??gain or not?

[noodels]

Gains= 2.7 hp for every 1lb lightened on crank, should get 8.1 hp any thought?alloy 1IB.2oz pounds standard thinkin 4.0/4.5 pounds sounds bit much any ideas???

b18

http://www.jperformance.co.uk/honda-civ ... -p-22.html

[digitalfaze]

Looks not too bad, best thing you could do is give it a try and see what happens. might be little gains but they all add up.

I had a bad experience with that company when i bought a manifold, might have been a 1 off but just watch out

[noodels]

have now canceled thanks, couldnt afford anyway

[james]

i have read bad thing about these pullys

unless you realy know what your at

id say light waight alloys would be a better idea for speed and handling

[Guest Daz81]

The standard Honda crank pulley has a Harmonic dampner fitted in side and is balanced along with the crank and flywheel in manufacture.

Swapping your crank pulley for a lightened item could cause an imbalance on the crank and thus causing bottom end failure.

IMO the best option for using an lightened crank pulley would be to have it balanced with the crank, this however isnt a cheap process.

Losing weith from the crank has + sides, faster spin up and less rotating mass, but it also has down sides in loss of inertia.

I doubt 8bhp could be found personally but thats just me being sceptical, fwiw loosing the pas belt gains 5bhp accross the board (tested on a dyno) loosing the PAS/AC/Alternator we saw 11bhp gain on our race engine.

Daz

[noodels]

thanks for that didnt think they had damper!oh well glad i stoped order!intresting 5hp ac though pity couldnt get alternating current from elsewhere ?wind turbine! ha! ha! exhaust gas!lost energy ect

http://www.atiracing.com/products/dampe ... mhonda.htm

looks good dont know how much though? for road car ?saves about 1pound =2hp