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Old 08-19-2009, 08:15 PM
DKane DKane is offline
Officially Welcomed to the 'Fest
Location: Auburn,CA
 
Join Date: Aug 2005
Posts: 109
Mein Auto: '97 2.8 Z3 bg R
Actually "all" is the answer....

Quote:
Originally Posted by kieskaman View Post
I thought the malady only affected the plastic impellers. Do they just crap out all of a sudden or are there warning signs? You think there would be a TSB
..the plastic goes south the fastest(most imbalanced unit)...the iron cast is second ..and last,the ss impellor version..which usually blows out the front bearing due to the god-awful weight of that oversized fan and thermal-clutch affair(which works well, just reallllly heavy)...if you fan delete, the pumps all last longer...problem is, one never knows which unit is oem on your Z3..hence it's a crap shoot wp-wise(if you have the SS unit, you probably make it beyond the 60k realm...the stewart unit is not all that much, but it has a really good bearing set(hd) and that alleviates the heavy fan problems...What to watch for?..the drip-drip-drip from the weep hole at base of wp.."when it starts a drippin', you'll soon take a lickin' "..and FAN WOBBLE!..If you can discern any fan wobble(engine off,spin fan, check side-play)..if it's noticeable..it's one step from fan-hell...Z3 Cheers! dk '97 2.8 bg R
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DKane
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