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#1
06-13-2021, 12:50 PM
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hi thanks for your feedback. slightly less concerned now cheers. when you say 1 mm back from the outside face does that mean it overhangs on the engine side of the waterpump by 1mm or is it 1mm until it reaches the back edge of the waterpump, or the belt is 1 mm back from the front sprocket/ wp
Last edited by Bob; 06-13-2021 at 12:58 PM. 
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#2
06-14-2021, 08:33 AM
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Good eye on catching the idler not sitting square, that is important.
The idler needs to be seated into its recess by tapping it in with a mallet. Pulling it in with only the bolt is not enough to get it all the way in, and can lead to it going in crooked as well. I have experienced this too. Have you tried seating it that way?
__________________
86 745 D24T/ZF 345k lifted 2.5" 83 764 D24T/M46 155k
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#3
06-14-2021, 08:46 AM
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Quote:
thankyou for your reply. yes i have tried tapping it in gently however the hole seems off center when the idler is tapped in square as you may be able to tell from the photos. i thought perhaps the idler hole itself is not completely central and thus you have to put the idler in a certain way to match the block. but if not i cant understand why the hole is not center. the only way the hole is centre is when the idler is placed on the piss if you like and obviously if you tightened it at that it would pull the idler even further out of alignment. I'm not going to lock it up until i know its all correct as we dont want another broken d24. thanks again for your reply. bob
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#5
06-23-2021, 08:57 AM
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Quote:
__________________
86 745 D24T/ZF 345k lifted 2.5" 83 764 D24T/M46 155k
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#6
06-23-2021, 01:22 PM
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hi, i have improved it by centralizing the idler to the pump with a Dremel and the idler now seems square as i have measured it with a straight edge, how accurate this is i am not sure so i couldn't guarantee it isn't still causing the issue. I'm pretty sure the oil pump is still at fault. id like to fit a new one however apparently the tic pumps are slightly different. I can find lt35 ones on ebay but they have a flat face whereas like mine and yours there is a recessed bore for the idler. i may end up taking the pump to a machine shop and getting them to square the bore and dti the outer edge of the idler to ensure its true to the pump. I may have to ally weld it first as you can only remove material. the only other potential cause i can think of is the tensioner as if it is not tight the belt runs true and sits nicely on the cam sprocket. i have a quinten hazel tensioner however i fitted the old litens one and it does the same so im doubtfull its a quality issue. judging by the wear marks/ polished areas on the cam sprocket it seems to have been running slightly off for some time. im planning on firing it up at the weekend and keeping an eye on the belt with someone in the car ready to switch off. if it throws a wobbly ill be on the lookout for a new pump and oem tensioner. FINGERS CROSSED
regards bob
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