Tom Posted March 6, 2007 Share Posted March 6, 2007 have a read http://www.supraforums.com.au/forum/showthread.php?p=525828#post525828 Link to comment Share on other sites More sharing options...
AlanM Posted March 6, 2007 Share Posted March 6, 2007 My Supe is a 93, think I should be a bit conccerned Link to comment Share on other sites More sharing options...
flukey-lukey Posted March 6, 2007 Share Posted March 6, 2007 Mine fell off not long ago and was sat in the undertray for about 2 days before I worked out what the squeeling noise was. I had exactly the same symptoms as decribed on SF. I advise people to buy replacement stock crank pulleys from Nic. He's a lot cheaper than Mr T Link to comment Share on other sites More sharing options...
SUPRALOOPY Posted March 6, 2007 Share Posted March 6, 2007 checking mine tomorrow now Link to comment Share on other sites More sharing options...
Scooter Posted March 7, 2007 Share Posted March 7, 2007 What does everyone think of this............very much a prototype. Link to comment Share on other sites More sharing options...
Stevie Boy Posted March 7, 2007 Share Posted March 7, 2007 What does everyone think of this............very much a prototype. Does it effect the harmonic balancing properties of the pulley do you think? Otherwise though, looks like a simple safeguard. Link to comment Share on other sites More sharing options...
Scooter Posted March 7, 2007 Share Posted March 7, 2007 Does it effect the harmonic balancing properties of the pulley do you think? not sure...........theres minimal weight added but i know 5-10g missing from a wheel rim can have a drastic effect on wheel balance.......... Link to comment Share on other sites More sharing options...
Gazboy Posted March 7, 2007 Share Posted March 7, 2007 That's interesting: Minko-If it was replaced @ 100K service as they are ment to be it wouldnt have been an issue. Link to comment Share on other sites More sharing options...
Jake Posted March 7, 2007 Share Posted March 7, 2007 If it was replaced @ 100K service as they are ment to be Is that right? I haven't heard that before. What's your source? (I'm not saying it's wrong, it sounds like a sensible precaution) Link to comment Share on other sites More sharing options...
Gazboy Posted March 8, 2007 Share Posted March 8, 2007 Is that right? I haven't heard that before. What's your source? (I'm not saying it's wrong, it sounds like a sensible precaution) I was quoting Minko form the Aussie forum Jake- it's a first for me too. I'll ask DSA tomorow. Link to comment Share on other sites More sharing options...
Chris Wilson Posted March 8, 2007 Share Posted March 8, 2007 What does everyone think of this............very much a prototype. The correct way to do this is to drill the peripherary in 3 places with an oversized hole, through the elastomer band, then drill a smaller hole into the hub. Fit 3 cap heads with spacers so the outer ring still moves independently of the inner, but an elastomer failure results in the cap heads holding the ring in situ, albeit with a lot of rattling noises. Common, even manadatory, in some race engines. I also do a scret mod on the timing star wheel on TT engines, as these can move when the peening that holds them to the cam belt pulley fails. (Yes, I have done yours Peter....) Link to comment Share on other sites More sharing options...
Bobbeh Posted March 8, 2007 Share Posted March 8, 2007 I was quoting Minko form the Aussie forum Jake- it's a first for me too. I'll ask DSA tomorow. Hes probably talking KM, not miles. So it should be looked at during at your 63k mile service with your belt changed if it was serviced correctly. Link to comment Share on other sites More sharing options...
Rob Posted March 8, 2007 Share Posted March 8, 2007 The correct way to do this is to drill the peripherary in 3 places with an oversized hole, through the elastomer band, then drill a smaller hole into the hub. Fit 3 cap heads with spacers so the outer ring still moves independently of the inner, but an elastomer failure results in the cap heads holding the ring in situ, albeit with a lot of rattling noises. Common, even manadatory, in some race engines. I also do a scret mod on the timing star wheel on TT engines, as these can move when the peening that holds them to the cam belt pulley fails. (Yes, I have done yours Peter....) Errr, I'm fick and I can't visualise things very well. Can you draw a sketch of that, purleese? Link to comment Share on other sites More sharing options...
Chris Wilson Posted March 8, 2007 Share Posted March 8, 2007 I can draw a sketch, but have no means of getting it onto a PC, I wish I had... Link to comment Share on other sites More sharing options...
Rob Posted March 9, 2007 Share Posted March 9, 2007 Do modern PCs still have MS Paint? Link to comment Share on other sites More sharing options...
Stevie Boy Posted March 9, 2007 Share Posted March 9, 2007 The correct way to do this is to drill the peripherary in 3 places with an oversized hole, through the elastomer band, then drill a smaller hole into the hub. Fit 3 cap heads with spacers so the outer ring still moves independently of the inner, but an elastomer failure results in the cap heads holding the ring in situ, albeit with a lot of rattling noises. Common, even manadatory, in some race engines. I also do a scret mod on the timing star wheel on TT engines, as these can move when the peening that holds them to the cam belt pulley fails. (Yes, I have done yours Peter....) So drill 3 equally spaced oversized holes in the elastomer section of the pulley for the cap head bolts being used with spacer washers to do the job of retaining the outer wheel in event of elastomer failure, Genius. Does the loose fit therefore mean the bolts no longer cause a great issue with balance, or is that for heat expansion? i'm really not "picking-holes" here as sounds like a great inexpensive solution, just wondered if making holes in the elastomer might cause premature failure, have you does this mod on a high miler pulley and got numerous more miles out Chris, as a little nervous bout drilling holes in mine but hey i guess the peace of mind the outer pulley's not gonna try and escape out of my Carbon Fibre bonnet's enough reassurance! Read again and i've got wrong end of stick, might need that drawing too! Link to comment Share on other sites More sharing options...
Stevie Boy Posted March 9, 2007 Share Posted March 9, 2007 I think the pennys dropped, the larger hole in the elastomer is so it can still move independently on the actual retaining bolt that goes into the hub. Might try and whip my pulley off and have a look, be a bit easier to visualize. Link to comment Share on other sites More sharing options...
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