What is the benefit of fitting one of these under drive pulleys? Seems a cheap modification but is it for real? Where do I get one from and how much?

 

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John Newcomb

www.geocities.com/jn300zxtt

hi m8 they say you get about 20 bhp from fitting these i know stillen have got them on their web site i think you also need diffrent belts if you buy the set im sure some of the lads on this forum have them fitted

at the bottom of this page, John

http://www.stillen.com/sports/accessories/sportsa.html

 

You seem to have given most of your money to Stillen anyway so why not give them the rest

 

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I have the SE underdrive pully (check my rides section you can just about make it out). I found the differences were more with bottom end pull away driving. Made my Z slightly nippier pulling off onto roundabouts etc. I have found that you get more noise at top end as it doesn't have the harmonic dampener. My rolloing road figures showed 15 BHP increase max.

 

I am happy with this product but do some searches as i believe some have concernes over engine longevity with underdrive pullies (from any supplier).

 

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crazyeddie.co.uk

brave-orchid.co.uk

£160-£200 pulley and shorter belt. umm not sure whether the risk is worth it, 15bhp against damage to engine.

Thanks Guys.

 

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John Newcomb

www.geocities.com/jn300zxtt