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Mazda Rotary Club

General => General Technical => Anything Engine/Performance/Tuning related => Topic started by: DarranJones on July 05, 2006, 04:43:37 PM

Title: Underdrive pulleys
Post by: DarranJones on July 05, 2006, 04:43:37 PM
What are underdrive pulleys for? Are they the ones used to get rid of the airpump?

Cheers,

Darran.
Title: Underdrive pulleys
Post by: Ada7 on July 05, 2006, 04:47:07 PM
I\'ve asked this question a couple of time to different people as i\'d like to get rid of mine now, and i\'ve got different answers.
I\'m sure someone will be able to set the record straight :D

Adam
Title: Underdrive pulleys
Post by: G@NDY on July 05, 2006, 04:47:22 PM
Thats right mate, used for the removal of the airpump:King
Title: Underdrive pulleys
Post by: Ada7 on July 05, 2006, 04:48:51 PM
Can you not just use a shorter belt?

Adam
Title: Underdrive pulleys
Post by: G@NDY on July 05, 2006, 04:57:49 PM
you can do mate, Clive has said you can where as Ross says that he wont fit just a shorter belt because it rubs on the water pump i think. but Darran asked what the underdrive pulleys are for. I used the pulleys, think they look good if anythink:rolleyes:
Title: Underdrive pulleys
Post by: DarranJones on July 05, 2006, 07:12:03 PM
So, how many pulleys should be in an underdrive kit if it removes the airpump? 2 or 3?

Bit of a dorky question I know.

Darran.
Title: Underdrive pulleys
Post by: shaunwil on July 05, 2006, 07:39:29 PM
Theres usually two in the kit. Its more to improve the surface contact between the water pump and the belt. It does underdriver the alternator and waterpump as well so a few ponies are extracted.

I\'ve just sold a set to blitzboy after removing my mechanical pump and going over to an electrical one !

Shaun
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