Front crank oil seal.

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unstable load
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Re: Front crank oil seal.

Post by unstable load »

Your bearing and seal supplier should have them, if not, contact SKF for who their suppliers are.
Here is a link to sizes, I hope it works.
https://www.google.co.za/url?sa=t&rct=j ... Rrg3FQwKzE


Cheers,
John

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Re: Front crank oil seal.

Post by DaveEFI »

I was hoping there was perhaps an RV8 engine parts supplier who stocked them, rather than relying on my measurements. :D
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Re: Front crank oil seal.

Post by unstable load »

Dave, I am sure there are some out there, but I have no idea who.

The obvious suspects would be Rimmers, Craddock, Island 4x4 et al, but don't quote me on that.

Measure the diameter, depth you need it to go to and how wide you need the sleeve to be and get a few mates to measure their cranks to get a max/min range.
The sleeves are +- 0.006" tolerance so that will be within sample limits.
Cheers,
John

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Re: Front crank oil seal.

Post by DaveEFI »

Thing is, I don't think I can measure the pulley assembly on the car. So it would mean disabling the car by removing it, measuring, sending off for the sleeve etc. Rather than a day's job for the lot, if I had it before starting.
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Re: Front crank oil seal.

Post by unstable load »

Got you, Dave.

A solution would be to measure a spare crank and order the bits on that measurement.
Alternatively, if you have sufficient depth in the seal housing, would be to insert the new seal a bit shallower into
the housing so it runs on a different part of the crank.
Cheers,
John

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Re: Front crank oil seal.

Post by DaveEFI »

I've found a spare assembly from an early 3.9 engine - which I assume has the same diameter as my SD1 EFI? It is worn too where the seal rubs, but I've measured the unworn bit at 48.6mm, using digital callipers. (only have a 1" micrometer)

Be very grateful if one of you proper engineers could confirm this measurement. :D
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Re: Front crank oil seal.

Post by Prophead »

BTW if the wear groove is not too server Rimmers supply a slightly oversized crank oil seal. I don't know the listing as I called them and mentioned the issue and they sent me the oversized one. 4 track-days and 2000 road miles no leaks.
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Re: Front crank oil seal.

Post by DaveEFI »

Got the pulley off. Sleeve standing by. Instructions say to use a metal filler if the wear groove is bad - but doesn't give a clue as to what bad is. There are two grooves on mine, with the worst one measuring about 0.4mm under size.
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Re: Front crank oil seal.

Post by unstable load »

I wouldn't bother with a filler, but if you feel a need to do something fit it wet with JB Weld or similar, but it will be a ballache to clean on an installed crank.
Cheers,
John

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Re: Front crank oil seal.

Post by DaveEFI »

unstable load wrote:
Mon Oct 28, 2019 11:19 pm
I wouldn't bother with a filler, but if you feel a need to do something fit it wet with JB Weld or similar, but it will be a ballache to clean on an installed crank.
It's not the crank, John. It's the seal between the pulley assembly and timing cover. The pulley is on the bench now.
The instructions say to use a non setting sealer if the wear isn't bad - but again don't mention which one. Do hate vague instructions - I need chapter and verse. :D
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Re: Front crank oil seal.

Post by stevieturbo »

I'd have thought a good flange sealant or thread lock type for securing one of those sleeves ?
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Re: Front crank oil seal.

Post by Mc Tool »

Securing the sleeve is not usually an issue as they should be an interference fit on the pulley ,however a small wipe of sealant assures that the oil can't creep under the sleeve
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Re: Front crank oil seal.

Post by DaveEFI »

Thanks to all. I found a non setting sealer in Halfords. Loctite MR5922

The sleeve is now fitted.

Image

The supplied fitting tool was only just long enough.

Did a drawing to remind me if it ever needs doing again.

Image
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Re: Front crank oil seal.

Post by unstable load »

Mc Tool wrote:
Wed Oct 30, 2019 10:29 pm
Securing the sleeve is not usually an issue as they should be an interference fit on the pulley ,however a small wipe of sealant assures that the oil can't creep under the sleeve
In the OEM application where I fit them, they ask for a lick of Mastinox Jointing compound, but that will be for corrosion protection, more than groove filling.
Cheers,
John

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