XJS ( X27 ) 1975 - 1996 3.6 4.0 5.3 6.0

Timing Chain Plug

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Old Jan 18, 2019 | 09:51 PM
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Default Timing Chain Plug

Had some time today so I whipped up a new aluminium timing chain plug from aluminium. Way cheaper than the $60 odd AUD the guy on eBay wanted

It's 2 pieces and when tightened provides 20% crush on the O ring expanding the O ring enough to prevent the plug falling out. I added an M3 bolt through the back to prevent it from falling apart if the front bolt is removed, in other words the back is retained and can not fall down inside the timing chain cover.







 
Old Jan 19, 2019 | 12:45 AM
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Looking GOOD.

$60, damn, that should include the timing cover, OR travel to you and install.
 
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Old Jan 19, 2019 | 01:24 AM
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Originally Posted by warrjon
Had some time today so I whipped up a new aluminium timing chain plug from aluminium. Way cheaper than the $60 odd AUD the guy on eBay wanted

It's 2 pieces and when tightened provides 20% crush on the O ring expanding the O ring enough to prevent the plug falling out. I added an M3 bolt through the back to prevent it from falling apart if the front bolt is removed, in other words the back is retained and can not fall down inside the timing chain cover.







I'll take one!
 
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Old Jan 21, 2019 | 03:53 PM
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Hi Daim,

If you wanted one I could make a few more, they would be $20AUD plus postage. If anyone wants one just leave a message on this thread.
 
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Old Jan 30, 2019 | 12:13 AM
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Hi Warren,

put me down for one, please. Cheers
 
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Old Jan 30, 2019 | 01:44 PM
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im building my pre-HE id love one of those!!!
 
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Old Jan 31, 2019 | 02:19 PM
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Ok, give me a week and I'll make a few up.
 
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Old Jan 31, 2019 | 05:04 PM
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mine cost $3. dollars, been 5yrs, no leaks!

it just dont look fancy,, and i do understand ,and warrjon price is not a lot anyway!

works for me!
 
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Old Feb 3, 2019 | 03:32 AM
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Originally Posted by warrjon
Ok, give me a week and I'll make a few up.
I'll have one too, Warren!
 
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Old Mar 10, 2019 | 08:19 PM
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I've made 5 if anyone is interested PM me with your address and I'll get a price on postage.
 
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Old Mar 11, 2019 | 05:41 AM
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Message sent!
 
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Old Mar 14, 2019 | 03:45 AM
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Guys I'll get to the post office Monday and get back to you. Cheers Warren
 
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Old Mar 14, 2019 | 06:06 AM
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Originally Posted by warrjon
Had some time today so I whipped up a new aluminium timing chain plug from aluminium. Way cheaper than the $60 odd AUD the guy on eBay wanted

It's 2 pieces and when tightened provides 20% crush on the O ring expanding the O ring enough to prevent the plug falling out. I added an M3 bolt through the back to prevent it from falling apart if the front bolt is removed, in other words the back is retained and can not fall down inside the timing chain cover.







I don't have this engine and won't need it but purely curious being a mechanic nut myself, you mentioned a safety retaining screw in the back to hold the rear disc from falling out if the front hex drawing screw were to be un-threaded too far. Great idea..but how do you prevent the rear screw itself from backing out and falling in to the engine. I'm sure you have thought of that and is probably as simple as a thread lock compound on it when you first screw it in as it never needs to be touched.
Not knocking it, just a little detail I observed. It's a great little mod.
 
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Old Mar 14, 2019 | 11:28 AM
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Originally Posted by carsnplanes
I don't have this engine and won't need it but purely curious being a mechanic nut myself, you mentioned a safety retaining screw in the back to hold the rear disc from falling out if the front hex drawing screw were to be un-threaded too far. Great idea..but how do you prevent the rear screw itself from backing out and falling in to the engine. I'm sure you have thought of that and is probably as simple as a thread lock compound on it when you first screw it in as it never needs to be touched.
Not knocking it, just a little detail I observed. It's a great little mod.
I would take a guess...

Shorter thread in the front rear part and then the screw threaded in and tightend with loctite... Shouldn't fall out at all then...
 
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Old Mar 15, 2019 | 03:07 PM
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Yep Loctite the retaining screw in. The front screw does not need it because the O ring provides tension on the thread.
 
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Old Apr 12, 2019 | 02:12 PM
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Received my timing plug yesterday. What shall I say, it is an awesome piece of kit! Thanks Warren!

You ought to start your own "product line". Rear half moons made of aluminium. This that and the other! I'd buy the lot!
 
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Old Apr 12, 2019 | 05:14 PM
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Have any more left warrjon?
 
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Old Jan 15, 2024 | 09:24 PM
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This is one of the top results when you search for the issue so I'm adding my small contribution here. I didn't like relying on an elastomer for retention of the plug. Probably not worth it honestly but it was fun. Drawing attached.





 
Attached Thumbnails Timing Chain Plug-2024-01-14-18-55-27-844.jpg   Timing Chain Plug-2024-01-14-19-12-51-943-medium-.jpg  
Attached Files
File Type: pdf
Timing Cover Plug Assembly.pdf (51.7 KB, 48 views)
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Old Jan 18, 2024 | 06:40 PM
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sor ry but i will stay with my choice,, $ 3.00 USD!
 
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