hyperhale Posted November 16, 2015 Share Posted November 16, 2015 Just looking for feedback on an issue I have had with a timing cover oil seal on a herald block that is now leaking noticeably after only 1100 miles use.Bought from rimmers as part of a timing chain replacement kit and fitted in January, crankshaft pulley has no sign of wear to cause the problem and prior to fitting there was only minimal seepage from the one I removed that has been in place for many years.Wondering if anyone had experienced similar problems.Have now purchased a Payen replacement so hoping for a longer life from this one.... Quote Link to comment Share on other sites More sharing options...
ferny Posted November 17, 2015 Share Posted November 17, 2015 Was the cover checked for distortions before it was refitted? Quote Link to comment Share on other sites More sharing options...
Clive Posted November 17, 2015 Share Posted November 17, 2015 It can be an issue. One club forum (dolomite possibly?) Has mentioned shortening the tensioning spring sonthe lip seals better on the crank. The other issue is the replacement type are usually thinner, but I think the lip still sits in the same place.The payen seal should work, I used to keep them "in stock" because of the repro reputation. Of course the suppliers will probably say the sell loads and rarely have a problem, and then it is down to poor fitting technique. However, none of this explains why thecseals are thinner, unless they are much cheaper/more common and should still do the job. Quote Link to comment Share on other sites More sharing options...
hyperhale Posted November 17, 2015 Author Share Posted November 17, 2015 Quoted from ferny Was the cover checked for distortions before it was refitted? The cover sits flat on glass and no sign of damage to the recess where the seal fits.. Quote Link to comment Share on other sites More sharing options...
hyperhale Posted November 17, 2015 Author Share Posted November 17, 2015 Quoted from cliftyhanger It can be an issue. One club forum (dolomite possibly?) Has mentioned shortening the tensioning spring sonthe lip seals better on the crank. The other issue is the replacement type are usually thinner, but I think the lip still sits in the same place.The payen seal should work, I used to keep them "in stock" because of the repro reputation. Of course the suppliers will probably say the sell loads and rarely have a problem, and then it is down to poor fitting technique. However, none of this explains why thecseals are thinner, unless they are much cheaper/more common and should still do the job. Thanks Clive... Quote Link to comment Share on other sites More sharing options...
oil_on_the_carpet Posted November 17, 2015 Share Posted November 17, 2015 Its not necessarily a 'repo'' issue.I can remember way back in the day certain brands of seals were the 'go to' brand for their excellent sealing - Gaco for instance.A seal will wear in to the shaft and a new one may take time to wear to match the slight wear groove that always exists.You can buy shim stock sleeves from bearing suppliers (they are only a few thou thick) that you can slip over a shaft to restore the shaft to as new perfection. Quote Link to comment Share on other sites More sharing options...
GT6 M Posted November 18, 2015 Share Posted November 18, 2015 When re dooing me own engin, I used a seal wid a double lip,as me own pully had grooves init, I got mine frae Chris Witor. look into it.M Quote Link to comment Share on other sites More sharing options...
hyperhale Posted November 18, 2015 Author Share Posted November 18, 2015 Quoted from GT6 M When re dooing me own engin, I used a seal wid a double lip,as me own pully had grooves init, I got mine frae Chris Witor. look into it.M Thanks MThe Payen seal I have bought as a replacement is supposedly a double lip seal, one inner sprung seal but the outer looks like a finer dust seal to me, was yours a double sprung seal?Maybe I need to call Chris Witor ... Quote Link to comment Share on other sites More sharing options...
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