R50/R53 :: Hatch Talk (2002-2006) Cooper (R50) and Cooper S (R53) hatchback discussion.

R50/53 Supercharger service, plus a few other items

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Old Oct 3, 2025 | 02:05 PM
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Supercharger service, plus a few other items

Gents going in for Supercharger service and a few other items

Questions:

-where can I find the o-rings that go on the supercharger fill and drain plugs? found them here but the company is in Europe. https://4revisionengines.com/product...-cooper-s-jcw/
-what vacuum lines, if any, should I change while the charger is out? (items that would only be accessible while im in there)


Some other items I plan to do this round:

-ati harmonic balancer
-tensioner and pulleys
-engine acc belt
-oil filter housing and gasket (housing is damaged)
-engine mounts (all three)
-drive shaft rubber boot repair (both drive shafts have ripped boots)
-water pump w all gaskets
-timing chain guides
-timing chain cover gasket
-timing chain tensioner
 

Last edited by ssoliman; Mar 8, 2026 at 12:05 PM.
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Old Oct 3, 2025 | 06:04 PM
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Rebuilt alternator - get a good one. Denso rebuild from FCPEuro is how I went. Crank sensor O ring. Be careful separating the vacuum lines - the red ring pushes in. Don’t pull without knowing how it works. Valve cover bolts are tricky. Valve cover gasket leaks.
 
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Old Oct 4, 2025 | 04:18 AM
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I would add oil cooler o-rings to the list.

In the past I used this kit from the UK as it includes some of the common o-rings that go bad. It was well worth it.
 

Last edited by LukasH; Oct 4, 2025 at 04:23 AM.
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Old Oct 4, 2025 | 06:17 AM
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Originally Posted by LukasH
I would add oil cooler o-rings to the list.

In the past I used this kit from the UK as it includes some of the common o-rings that go bad. It was well worth it.
That is a nice looking kit, great find!
 
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Old Oct 4, 2025 | 10:33 PM
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Crankshaft position sensor o ring and camshaft position sensor o ring. Oil pan gasket, too. why not do you entire timing kit? And however the water pump connects to the block is a small water outlet. That has an o ring gasket on it, too.

Also, your timing cover is your oil pump. I got most everything I needed from rock auto and it was way better priced than anywhere else.

If you're pulling your axles, you could also replace the axle seals.
 
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Old Oct 5, 2025 | 09:03 AM
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OFHG / oil filter housing gasket.
 
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Old Oct 6, 2025 | 08:45 AM
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Originally Posted by LukasH
I would add oil cooler o-rings to the list.

In the past I used this kit from the UK as it includes some of the common o-rings that go bad. It was well worth it.

that kit looks like it could be just the thing
 
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Old Oct 6, 2025 | 08:48 AM
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Originally Posted by phone_cover
Crankshaft position sensor o ring and camshaft position sensor o ring. Oil pan gasket, too. why not do you entire timing kit? And however the water pump connects to the block is a small water outlet. That has an o ring gasket on it, too.

Also, your timing cover is your oil pump. I got most everything I needed from rock auto and it was way better priced than anywhere else.

If you're pulling your axles, you could also replace the axle seals.
good thoughts, all of them. i've done most of the common o rings that usually leak, and the gaskets already. its still leaking somewhere on the right side of the engine. maybe the oil filter housing gasket, maybe the timing chain cover :(
 
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Old Oct 6, 2025 | 08:50 AM
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Originally Posted by noodlesandsam
OFHG / oil filter housing gasket.
FOR SURE. i'm replacing the entire housing w the intercooler as well. it has some damage to it
 
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Old Oct 6, 2025 | 08:59 AM
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placed an order over the weekend. over 2k in parts already. i'm sure it will go more by the time i'm finished

more to come as i work through this job
 
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Old Oct 6, 2025 | 01:33 PM
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Originally Posted by ssoliman
good thoughts, all of them. i've done most of the common o rings that usually leak, and the gaskets already. its still leaking somewhere on the right side of the engine. maybe the oil filter housing gasket, maybe the timing chain cover :(
The is a bolt in the centre of the timingchain cover, behind the crank pulley, that actually has an integrated oring. Took me some time to figure out that was leaking and not the cover or crankseal itself.

You might want to check it.
 
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Old Oct 6, 2025 | 02:31 PM
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yes i see that. got it. much appreciated
 
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Old Oct 14, 2025 | 10:12 AM
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some goodies starting to arrive
















 
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Old Oct 14, 2025 | 10:20 AM
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Christmas came early! Good stuff, only good brands 👍
 
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Old Oct 14, 2025 | 10:48 AM
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@LukasH stole my comment! we just finished Canadian thanksgiving the past weekend, seems as if you skipped that and went right to Christmas!

I know you said the original filter housing was damaged, what in particular is damaged to deem buying a new one? Curious
Secondly to that, if you havent yet, the pre-facelift housings were different from your original facelift one. Double check before installation that its the facelift version you received, the pre ones require a middle sleeve/screen. Does not matter which version you run so as long as its run correctly. Would hate to do all this work and be right back in briefly.

Best of luck when you start the repairs!
 
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Old Oct 14, 2025 | 05:42 PM
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nice! when i did all that on mine, i was also doing suspension work, so the subframe was out. that gave me so much room. still, there's a surprising amount of room to work on these engines. happy wrenching!
 
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Old Oct 15, 2025 | 02:42 PM
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Originally Posted by Scoobaru2010
@LukasH stole my comment! we just finished Canadian thanksgiving the past weekend, seems as if you skipped that and went right to Christmas!

I know you said the original filter housing was damaged, what in particular is damaged to deem buying a new one? Curious
Secondly to that, if you havent yet, the pre-facelift housings were different from your original facelift one. Double check before installation that its the facelift version you received, the pre ones require a middle sleeve/screen. Does not matter which version you run so as long as its run correctly. Would hate to do all this work and be right back in briefly.

Best of luck when you start the repairs!
i've not seen the damage to the filter housing but i can feel it. feels like a chip around the edge, just before the threads start. Twice now i think it has torn the gasket. Oil spills out allover the floor on first start after an oil change / filter change.

this is the part that i got, confirmed with realoem.com: https://www.fcpeuro.com/Mini-parts/C...ds=11427562250

 
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Old Oct 15, 2025 | 02:47 PM
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Originally Posted by phone_cover
nice! when i did all that on mine, i was also doing suspension work, so the subframe was out. that gave me so much room. still, there's a surprising amount of room to work on these engines. happy wrenching!
having the subframe out would be nice. originally i was thinking i would put in a new clutch kit but i scoped it back, i drive it as a daily. Next project will be a new clutch kit

 
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Old Oct 15, 2025 | 05:59 PM
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Damn! -That's a ton of goodies going into your baby. Awesome and we'll deserved, I'm sure.
Would love to see a pic of her someday.
 
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Old Oct 16, 2025 | 11:44 AM
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let me dig up some pics. she is not looking as good as in past years. needs some work after we moved...
 
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Old Oct 16, 2025 | 12:29 PM
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in blue:





 
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Old Oct 16, 2025 | 12:37 PM
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Oh wow - To quote the Tubes; "She's a beauty".
Nice!
 
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Old Oct 18, 2025 | 08:02 AM
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got started yesterday. the charger is out. pics below of the condition and the oil from each side;

-the water pump side had less oil but was clearer in color. pulley side was under slight pressure (heard air escape as I pulled the drain plug)
-no play in the pulley
-the only bad so far was a broken plastic connection on the line that goes to the throttle body (more on that later)

















 

Last edited by ssoliman; Oct 18, 2025 at 08:20 AM.
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Old Oct 18, 2025 | 08:13 AM
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here is the line that broke, its an offshoot of the line that goes from the throttle body to the purge valve.

the nipple broke off in the rubber side.

anyone know what this line if for?

best fix?



 
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Old Oct 23, 2025 | 06:07 AM
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was not able to find the vacuum line fittings for sale from BMW / mini. picked up some fittings from oreilly. going to give them a go
 
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