From my experience with minis you would be best taking gearbox off and slapping in a new clutch you’d be about to do that in a hour with it all stripped down and a great selling point when/if you go to sell it as that’s a £500 ish job
If the missing chunk of the exhaust valve did go straight down the exhaust then you need to have a good look at the exhaust side of the turbo as you might have damage to the impeller vanes which could cause issues once the engine is all back together due to it not being able to spin up fast enough to deliver the correct amount of boost... It's not a great surprise that its that valve that's burnt out as it's usually the exhaust valves closest to the centre of the engine that run the hottest for fairly obvious reasons. It might be worth having a very good look at the exhaust valves from cylinder 2 as the corresponding one in that cylinder may be exhibiting signs of heat deterioration too. With the one having burnt out then it's likely that the other closest to the centre of the engine has been running hot too...
I reckon it is more likely that there was a flaw in the original valve metal and the hot exhaust gasses gradually wore it away overtime one a tiny leak is established the slow deterioration would be almost imperceptible
did a leaking exhaust valve cause the 'running rich' look to the cylinder and valves, or did the running rich cause the valve to fail?... Obviously its broke, but why???.. 👍🏻👍🏻
Take a look at the blades on the turbine wheel (hot side), there is a slight chance that the blades have had a tough time with chewing on that small piece
Being a BMW tech I have done hundreds of these, as others have mentioned replace oil filter hosing gaskets and turbo feed pipe and chain kit, use new vanos adjustment bolts and crank bolt, make sure they are correctly tightened, your kick yourself if that turbo feed pipe starts leaking and you have to take front off and cat again
I replaced the turbo oil feed pipe on my wifes cooper s a common fault apparently!! If I had known how easy it was to take the front end of. (As seen in video)It would have made the job a lot lot easier. You might want to think about replacing the turbo oil feed pipe!!. Keep the brilliant videos coming guys really interesting stuff. Thanks👍👍👍
Blinder Rob & Chris. A clean & tidy workshop is a safe and happy to work in workshop! Can't wait to see it all go back together. Have a good week end fellas.
Just out of Interest, Would it not be Cost Effective to Change all 8 of the Exhaust Valves while the Head is off. If one of them has already gone to Valve Heaven, could the others be on the way out soon.
Great work boys. Years ago, when valves had been lapped in and assembled we used to put paraffin in the valves recess to check for leaks before putting head back on.
First comment ever for me but have been watching from the start. Really has kept me going through lock down and look forward to the three videos every week. Good to see Chris back. He is good on camera and should speak more given his knowledge. Great content and extremely enjoyable so well done
The only way the part can get to the exhaust is through the turbo blades. Bending or maybe breaking them on the way out thus unbalancing it bye bye turbo.
Hey mate, could you take a look at the fuel injector of the cylinder with the burnt valve? I think that did not happen without a reason, could be a faulty injector (so it was running too lean)? I think it would be a safe bet to rule that out first, so the same thing does not happen to the next owner after a couple thousand miles.
Worked on line 60 fluid fill and ecos testing. Fitting mirrors, crome trims, wiper blades ect.. great job but terrible cars. The 3rd generation ones that came out in 2013/2014 were much better built by us southern midlanders lol
Do you know what Rob your videos are a joy to watch.....keep up the great work.....nice to see Chris back up and running....Thomas the tank engine proper tickled me.
Well, that's that little problem solved. Getting to the engine looked like the automotive equivalent of peeling an onion one layer at a time (but without the tears). Makes the fun and games I had changing the clutch on my 1970's Minivan seem a doddle by comparison.
I am a fairly new subscriber, really love the channel i had a mini way back in 1965 and this one is TOTALY different to what used to be a fairly simple motorcar. Great video's so please keep them coming . on second thoughts the burned valve would not neccessarily have burned out quickly , it may have developed a crack and slowly burned the valve surface around the crack so there may not be any small pieces left in the exhaust system .
Do the people who design these cars and engines. Ever work on them after they are built ??? Would not take one of them for free God bless your patients !!!
You should replace the valve stem seals as well. I would also rebuilt the starter since you have easy access while the head is out , also water pump, friction wheel bearing and belt tensioner bearing.
I’m just about to start on a 520 d with I think exactly the same issue We are going to pull the whole motor out and strip it on the engine stand Top work Rob and Chris 👍👍😍😍
Great upload Rob and glad you got to the bottom of the issue. The whole front had to come off my R56 to replace the oil filter housing gasket, a £5 part 😖
Another Excellent Video.👍👍 I have warned my daughter to never buy one. Seen too many car vids with the same problems, Overheating,Valves, Head Gasket, Cooling. etc etc etc
Please change valve steam seals, they are known to let oil into the chamber. Especially exhaust one. Please please change valve steam seals. They are 30 a set and after time they go hard and not sealing pistons .
You could also replace valve stem seals since it is already stripped, it should improve oil usage on these Prince engines :) it's a few pound item but hell to replace if you don't have it all open already.
Hi Rob. Sometimes the wheel locking nut is clipped inside the small boot compartments or side access panels for the rear lights. Generally found on a metal clip inside the rear wing. Only came across this many years back when I had to replace a bulb in the rear offside light Great video as ever !
Love these more in-depth engine videos, it’s crazy how that valve has cracked. Hope you both have a good weekend. Oh, the piston looks more like Gordon, not Thomas (same show) 😂
My previous car was an R56 Cooper S, It burned oil ALOT.. one day I checked the oil level, pulled dipstick out.. go to put it back in.. nope, it didn't want to go back in, I luckily didn't start it up, found out the plastic chain assembly had split, I got the chain & plastics replaced, it was fine after that.. If I'd have started it I thought it would go bang as the timing might a gone out. Luckily I never did.. had a few problems (I think stem seals resulted burning oil, but sold it before I fixed it..) but always loved the car. Planning to rebuild one in the near future.
👍👍That was a brilliant video Rob! The way you and Chris work in such a clean and methodical manner is a lesson to us all and any young budding mechanics out there! I know it’s only “nuts and bolts” but it’s great, interesting and very informative content. Compared to taking the head off Chris’s Vauxhall Viva engine - have things really improved on modern engines???
"probably went down the exhaust" - hope not boys , otherwise turbo blades toast. should be alright tho, as it looks like it slowly burnt away [thermal runaway due to slightly sticking open/bad pitting]. does that ramp thing under mini not work? had "dance tablets" that looked like the pistons.... used to change leaking head gaskets on real minis at main dealer in 2 hours start-to-finish, err, slightly more involved now - progress ???
It was Thomas the tank engine looking back at you Rob that’s was funny😄 as to the exhaust valve I wonder if with all the valves that are made that it was just a badly made one that got past quality checks as I don’t know what would make a piece break off, so well done you and Chris finding the problem. See you both on the next one👍👍👍
Silly question Rob. But might it be worth changing the clutch now its this far apart, its an expensive job normally and it might help with resale value? Just an idea am really enjoying the channel!
Defo replace the turbo oil feed ... common problem with them ... also can you show a bit more in depth how to time the engine when you put the chain back please Rob
Not sure those pistons are legal. Thomas the tank engine has copyright protection, think this could be the next big automotive scandal after VW.
It's nice to see Chris watching someone working for a change.
Who else hits the like button before watching 👍👍👍
Yep!
Same here lol 👍
They produce a duff video. Spot on every time!
I do
Very educational. I've never seen before the complete disassembly of a Mini front end and engine head removal process right from the start to the end.
Definitely wont be getting one of those. Miles too complicated for me.
change the stem seals while your in there
That exhaust valve failure is appalling for such a young car. BMW quality strikes again. 🥴
That would depend on which BMW!.
@@fitzmullin6665 BMW now.
Engines are from Peugeot not BMW!
From my experience with minis you would be best taking gearbox off and slapping in a new clutch you’d be about to do that in a hour with it all stripped down and a great selling point when/if you go to sell it as that’s a £500 ish job
Looks more like Gordon. 🤣🤣
Love how you guys keep the workshop so clean and tidy.
Well done lads, well that has put me off of buying a cooper S, as I always fancied one but wouldn't want the repair bill to fix this issue.
Ding dong. Friday afternoon, just opened a cheeky tinny and a video from Rob drops ...The weekend starts here chaps 👍
You’re gonna have loads of bits left over when that’s back together!!
If the missing chunk of the exhaust valve did go straight down the exhaust then you need to have a good look at the exhaust side of the turbo as you might have damage to the impeller vanes which could cause issues once the engine is all back together due to it not being able to spin up fast enough to deliver the correct amount of boost...
It's not a great surprise that its that valve that's burnt out as it's usually the exhaust valves closest to the centre of the engine that run the hottest for fairly obvious reasons. It might be worth having a very good look at the exhaust valves from cylinder 2 as the corresponding one in that cylinder may be exhibiting signs of heat deterioration too. With the one having burnt out then it's likely that the other closest to the centre of the engine has been running hot too...
I reckon it is more likely that there was a flaw in the original valve metal and the hot exhaust gasses gradually wore it away overtime one a tiny leak is established the slow deterioration would be almost imperceptible
did a leaking exhaust valve cause the 'running rich' look to the cylinder and valves, or did the running rich cause the valve to fail?... Obviously its broke, but why???..
👍🏻👍🏻
Take a look at the blades on the turbine wheel (hot side), there is a slight chance that the blades have had a tough time with chewing on that small piece
Being a BMW tech I have done hundreds of these, as others have mentioned replace oil filter hosing gaskets and turbo feed pipe and chain kit, use new vanos adjustment bolts and crank bolt, make sure they are correctly tightened, your kick yourself if that turbo feed pipe starts leaking and you have to take front off and cat again
Great stuff Chris and Rob. Helping to keep us sane during this lockdown. Kindest regards from Ireland.
Took the head off my 1200 super Anglia in 15 minutes once.
I replaced the turbo oil feed pipe on my wifes cooper s a common fault apparently!! If I had known how easy it was to take the front end of. (As seen in video)It would have made the job a lot lot easier. You might want to think about replacing the turbo oil feed pipe!!. Keep the brilliant videos coming guys really interesting stuff. Thanks👍👍👍
Really interesting upload Rob and Chris, I wonder what has caused the valve to fail. Top upload again 👍😎😎
Interesting example of how cars have changed. Compare the Mini to Chris's Viva. Pretty funny really. Thanks guys.
See that you made it on to Rattarossa's TH-cam channel! 🇬🇧👍
The pistons look like a face definitely something going on there.
Blinder Rob & Chris. A clean & tidy workshop is a safe and happy to work in workshop! Can't wait to see it all go back together. Have a good week end fellas.
Think I will stick to the "A" series engined Mini.. Thanks for the video
Would the broken bit of valve get through the catalytic converter? Or the turbo? Quite a big chunk!
Ha ha Thomas the Tank Engine Rob.
Going to be another nice project.
Good Work Boys.
Just out of Interest, Would it not be Cost Effective to Change all 8 of the Exhaust Valves while the Head is off. If one of them has already gone to Valve Heaven, could the others be on the way out soon.
Great work boys. Years ago, when valves had been lapped in and assembled we used to put paraffin in the valves recess to check for leaks before putting head back on.
First comment ever for me but have been watching from the start. Really has kept me going through lock down and look forward to the three videos every week. Good to see Chris back. He is good on camera and should speak more given his knowledge. Great content and extremely enjoyable so well done
Has it got a turbo if so the missing part may have damaged it.
@@Stop..carry-on turbo turbine wheel is just downstream from the exhaust valves
Only one way to kno lads
Fix valves put it back together and check turbo
@@anthonymillar6183 not really the turbo could be sent off for testing before rebuilding the engine
The only way the part can get to the exhaust is through the turbo blades. Bending or maybe breaking them on the way out thus unbalancing it bye bye turbo.
@@cmautolink656 true
Suggest to rob it may be a good idea to do now as engine is stripped down
Rob and Chris how much would trade charge for this repair? Labour and materials maybe £1000 all in?
Possibly 600-1000 yea 👍
Hey mate, could you take a look at the fuel injector of the cylinder with the burnt valve? I think that did not happen without a reason, could be a faulty injector (so it was running too lean)?
I think it would be a safe bet to rule that out first, so the same thing does not happen to the next owner after a couple thousand miles.
saved from the scrap yard I reckon : well played boys !
What a pile of rubbish a mini is BMW are one of the worse cars on the road , and my sister Has had 4 of them
check the turbo , that large chunk of exhaust valve had to pass thru the impellor to get out ..........not a promising thought
Worked on line 60 fluid fill and ecos testing. Fitting mirrors, crome trims, wiper blades ect.. great job but terrible cars. The 3rd generation ones that came out in 2013/2014 were much better built by us southern midlanders lol
Do you know what Rob your videos are a joy to watch.....keep up the great work.....nice to see Chris back up and running....Thomas the tank engine proper tickled me.
Thanks for the video Rob, hi Chris hope that you are feeling 100% again 👍👍👍
Good to see the gruesome twosome are back up too speed 👍👍👍👍
Well, that's that little problem solved. Getting to the engine looked like the automotive equivalent of peeling an onion one layer at a time (but without the tears). Makes the fun and games I had changing the clutch on my 1970's Minivan seem a doddle by comparison.
Quality save there mate 😉
I am a fairly new subscriber, really love the channel i had a mini way back in 1965 and this one is TOTALY different to what used to be a fairly simple motorcar. Great video's so please keep them coming . on second thoughts the burned valve would not neccessarily have burned out quickly , it may have developed a crack and slowly burned the valve surface around the crack so there may not be any small pieces left in the exhaust system .
Do the people who design these cars and engines. Ever work on them after they are built ??? Would not take one of them for free God bless your patients !!!
You should replace the valve stem seals as well. I would also rebuilt the starter since you have easy access while the head is out , also water pump, friction wheel bearing and belt tensioner bearing.
Great wk Rob,nice to see Chris bk
Pistons look like ‘Alice’ from the Popeye cartoons 😂
I was correct, seen the same thing on a BMW 5 seris
You guys do a fantastic job on the cars and also on the vids well done always come across as very genuine.👍👍👍
Good job on the head removal and just love how you tidy/ mop up spillages etc!!
I’m just about to start on a 520 d with I think exactly the same issue
We are going to pull the whole motor out and strip it on the engine stand
Top work Rob and Chris 👍👍😍😍
A 15 minute fix and 5 hours to put back together.
Great upload Rob and glad you got to the bottom of the issue. The whole front had to come off my R56 to replace the oil filter housing gasket, a £5 part 😖
Another Excellent Video.👍👍 I have warned my daughter to never buy one. Seen too many car vids with the same problems, Overheating,Valves, Head Gasket, Cooling. etc etc etc
Hope the turbo didn't take a hit from the shrapnel. I'm sure you will be checking the exhaust vanes.
I was surprised from bmw just goes to show you their isnt a good car out theit just good luck or bad luck
its a peugeot engine
Please change valve steam seals, they are known to let oil into the chamber. Especially exhaust one. Please please change valve steam seals. They are 30 a set and after time they go hard and not sealing pistons .
Rob lift the back seat there’s a pull cord for the boot 🛠🇬🇧🛠
Bit embarrased about state of my unit compared to how clean and tidy you keep yours!!
ironically cylinder 3 looked the happiest. 😂😂😂
Enjoying the build with you, thanks.
The piston looks like Chad. Wot no compression?!
I dream of having a workshop where I can tinker like this.... one day 👍 great work....
Oh for the Morris minor
?
@@sruk think he means it’s simplicity
You could also replace valve stem seals since it is already stripped, it should improve oil usage on these Prince engines :) it's a few pound item but hell to replace if you don't have it all open already.
Piston looks like Alice the Goon from Popeye !
Great vid yet again. Nice in-depth 👍
Highlight of this freezing Friday
Yeah I’ve heard of those Thomas the tank engine pistons before🤣👍🏻
That piston looked like Squidward
Hi Rob. Sometimes the wheel locking nut is clipped inside the small boot compartments or side access panels for the rear lights. Generally found on a metal clip inside the rear wing. Only came across this many years back when I had to replace a bulb in the rear offside light
Great video as ever !
Love these more in-depth engine videos, it’s crazy how that valve has cracked.
Hope you both have a good weekend.
Oh, the piston looks more like Gordon, not Thomas (same show) 😂
hte only question now is where did the bits go! hopefully no turbo damage or convertor blockage
Alot of hours going into this old 7 plate but satisfying to do no doubt. Ps, good to see chris up and about again.
Great result Rob. Nice to see Chris is back firing on all 4 as well.
Jaysus wept...cars have too many moving parts! Huge respect for you guys understanding it all to this level.
Great video . Taking the front off on most fwd cars is the only way sometimes. Easy to take a engine out as well.
That's a result. Cheap fix apart from time too.
My previous car was an R56 Cooper S, It burned oil ALOT.. one day I checked the oil level, pulled dipstick out.. go to put it back in.. nope, it didn't want to go back in, I luckily didn't start it up, found out the plastic chain assembly had split, I got the chain & plastics replaced, it was fine after that.. If I'd have started it I thought it would go bang as the timing might a gone out. Luckily I never did.. had a few problems (I think stem seals resulted burning oil, but sold it before I fixed it..) but always loved the car. Planning to rebuild one in the near future.
👍👍That was a brilliant video Rob! The way you and Chris work in such a clean and methodical manner is a lesson to us all and any young budding mechanics out there! I know it’s only “nuts and bolts” but it’s great, interesting and very informative content. Compared to taking the head off Chris’s Vauxhall Viva engine - have things really improved on modern engines???
I actually have a collection of lock in wheel nuts from my few years working in assembly at plant oxford 🙈
Its just nice to see you guys coming back together whatever the project.
What lot of hassle and if you had to take one of these cars to a garage the labour will be a killer 😕😕
Utterly fascinating. I'm sure you're smiling to show off your gnashers.
I saw you Rob checking out Scott's @ratarossa BB512i thanks' for the Covid virus vid'
I picked a car up and didn’t go anywhere near him ?
"probably went down the exhaust" - hope not boys , otherwise turbo blades toast. should be alright tho, as it looks like it slowly burnt away [thermal runaway due to slightly sticking open/bad pitting].
does that ramp thing under mini not work? had "dance tablets" that looked like the pistons....
used to change leaking head gaskets on real minis at main dealer in 2 hours start-to-finish, err, slightly more involved now - progress ???
It works fine yes 👍
@@sruk mini not fit on? [bad back , i always raise car on ramp]
It was Thomas the tank engine looking back at you Rob that’s was funny😄 as to the exhaust valve I wonder if with all the valves that are made that it was just a badly made one that got past quality checks as I don’t know what would make a piece break off, so well done you and Chris finding the problem. See you both on the next one👍👍👍
Rob's hidden talent .... He's really a ninja 🤣 epic save for jump pack mate 🤣
Hahaha Thomas the tank engine 🤣 it does look like a face for definite.
Glad it’s only a valve and the rest are good nice work so far.
Rob where do u get your jogging bottoms
Silly question Rob. But might it be worth changing the clutch now its this far apart, its an expensive job normally and it might help with resale value? Just an idea am really enjoying the channel!
You will find the missing bit from the valve in the Cat. or in the Turbo if it has one as collateral damage.
Have a look in the exhaust, bit of valve probably still in the cat
I bet the colour drained out of the poor owner of that mini when it blew that valve 🙀👍
Defo replace the turbo oil feed ... common problem with them ...
also can you show a bit more in depth how to time the engine when you put the chain back please Rob
Another great video lads good to see Chris up and about.
Awesome video Rob,you and Chris make a great team and 99/100 find the fault.
stay safe and keep sharing.
I hear those intakes are problems,the thermostat housings break/warp ....plastic
Talk about cramming things in. So much more difficult to work on than the Golf :-)
9:00 that was a good tune for a time lapse 😄, good beat, got me bopping 😂.