BMW k75 rebuild 5/ Engine head check

Removal of the head and a look at the whole stuff.
Regular process before setting the bike on fire.
Maybe this thing will run the next decade if i'm lucky lol
The engine is good,there are 15 bars of compression.
Worth fixing it.
Music : Ronald Jenkees.
/ ronaldjenkees
www.ronaldjenke...

[@michaelovitch]

Thank you : ) They did use 4 valves on the k1100 4 valves do not allow you the same torque at low or middle range rpm. The turbulences in the combustion chamber and cylinder are not so good than with 2 valves There is nearly no swirl with 4 valves but only tumble Moreover the chamber is hemispheric and there is no room for 4 valves. The compression ratio is high 11.5/1 and all the engine (and the concept of those bikes) is designed to torque use ,not high output There is 75 hp at the wheel only

[@46MOTO46]

Gold collection of repair.

[@michaelovitch]

: ) Thanks !

[@207matthew]

Your last videos helped me get my bike on the road Best regards from Arizona...Matt. (Been waiting for this one)

[@michaelovitch]

I'm very happy if it helped you. : ) You had problems with the valves too ?

[@zx8401ztv]

Well i have to take my hat off to you, that spark plug socket made a smashing spring compressor and a nice window to the retainer :-)) The tool you had to buy to remove the head bolts was "pants" and i assume the underware frame was eather your way of visually saying "pants" or you were thinking of stripping something else down ha ha :-)) Ahh the slightly dead valve, and the others looked well past there guarantee lol, best to replace them :-)) You got very artistic at the end :-)

[@Bernievids]

6:14. That's what I'm talking about.

[@bushongsclassicmotorcycles8994]

This is a great video. I am rebuilding a K100 engine and this is going to help me a lot.

[@michaelovitch]

Thank you : )

[@srdelaney81]

great series of videos Michael, I am in the middle of similar rebuild myself of a 94 k1100rs, ex-police also! Thanks a lot, videos really helped with getting things clear in my mind when approaching work, my first build!

[@michaelovitch]

Steven Delaney Thank you : ) Congrats for your build ! Do you have any pictures or vids ?

[@srdelaney81]

michaelovitch Merci Michael, Malheureusement toutes mes photos de nouvelle construction sont sur mon portable et il est en panne en ce moment. Mais je vais mettre les photos ici quand il sera réparé! Mais j'ai les photos du premier "makeover" après l'avoir acheté. Je n'ai fait que payer!

[@michaelovitch]

Steven Delaney Hey,even if you only paid,it's your bike and you ride it. Send me the link,it's always interesting to look at others peoples projects : )

[@srdelaney81]

Just put together a quick slide show for you, will get the newer stuff to you when I get phone back form Orange!

[@michaelovitch]

Steven Delaney It's private status,i can't access it : (

[@michaelovitch]

It's not a lot,but the efficiency is good tahnks to the injection : the mileage too 50, 55 mpg They are made for cruising,no need 4 valves for that. Even nowadays you can see variable timing and disabling 2 of 4 valves on low middle rpm to be able to use swirl and produce a nicer torque like on vtec engines and such. Greets fro France ! : )

[@ijsman]

Very systematic taking apart, nice!

[@michaelovitch]

I just received the parts this morning to finish the repairs on the head : )

[@gillm33]

really great video. i'm taking the cylinder head off my K100 right now and this has really helped me through it

[@michaelovitch]

Thank you : ) What is the problem with your bike ? I've watched your vids,Diesel engine oil is more detergent,i use synthetic diesel oil in the bike 5w40 is a good and tere are plenty of it. ACEA B3 or B4 oils are good. Don't use C rated oils.

[@gillm33]

my bike one day ground to a halt and the engine seemed to be seized. now i'm dismantling everything i cant find and faults or imperfections. so the ;last job to do is take the cylinder head off and check the valves and piston rings... fingers crossed :P

[@michaelovitch]

That sucks : ( seized engine is weird. how many kilometers on it ? you had enough oil ? not overheated ?

[@gillm33]

50,000 miles so I guess that's about 75,000 Km. Definitely had enough oil, though the radiator was leaking so could have overheated. Do you thing the overheating could be the culprit? Everything seems to move and flow normally when I crank the engine by hand

[@michaelovitch]

It's not a lot for those engines. So,don't dismantle further. Try to start it first. even by pushing it. check if you have spark,fuel pressure,no vacuum leaks. what happened exactly ? when ? problems before that ?

[@michaelovitch]

Yes for the headbolts, it's the special tool n 852 from bmw It come in yellow,pink and for the lucky customers,shortened on the rear retainer : ) it's to see who is following and who is skipping the video lol Looks like i have two heedful peoples at least he he he : ) The thing at the end is to level up the special tool thing. A bit of poesy is nice, i think lol got to be not too much familiar lol

[@michaelovitch]

Good eye for the socket : ) It had the ideal size, deepness to do the task. lol for the past guarantee,they are cooked pretty well i just asked for a quotation on the new valves,i wait...

[@martynb7741]

Hi there Help, what socket did you use on the head bolts? A 6mm hex is too small, I’m told it’s an 8mm which is too big.

[@michaelovitch]

@@martynb7741 Hi, T50 Long male.

[@greenbike9475]

Best video I have seen , you know how it works 👍🏻

[@torkdork69]

6:13 nice. Well done on the bike. Looking smooth

[@michaelovitch]

; )

[@chrismak2126]

love the video its great seeing how every thing go's plus great job getting the younger gen in there haveing fun with tools

[@michaelovitch]

Thank you : ) Yes,the youngs need to know how to use them,this kid like to wrench or build legos : )

[@peterandrews1512]

Brilliant video

[@michaelovitch]

Thanks : ) the real rebuild phase is coming.... parts are all here !

[@CarlosMartinsPT]

Wow! Impressive work!

[@michaelovitch]

Carlos Martins Thank you !

[@MtbValladolid]

ole, ole y ole, fantástico trabajo enhorabuena

[@michaelovitch]

+ENRIQUE MR Muchas gracias !

[@BADASSELVIS]

6:13 is the best part of video !

[@michaelovitch]

; )

[@michaelovitch]

Thank you : )

[@raybrensike42]

Looks like you've done this before. I have to write down everything I do, if I go very far in disassembly.

[@michaelovitch]

I've done few things of this kind,yes. Maybe you should take the risk to write nothing down,you will force yourself to remember what goes where. It maybe depends on the kind of memory you use,photographic,or an other kind,to help you in the chronology and location of parts. try to take some (controlled) risks it will help you maybe : )

[@raybrensike42]

Interesting thing about memory. I found I can remember three measurements on a tape measure, two by regular memory, and third measurement I just "see".

[@michaelovitch]

It's something i can't. Very difficult for me to remember or use numbers,even just two or three : ) I use photographic memory ,i can locate or direct myself pretty well in space or parts on a whole ,but the names or numbers are a pain for me lol I think we use different kinds of memory : ) When i adjust valves, i have to write it down and look at it a bunch of times for each valve... i'm quite bad at math of course lol

[@921CustomWorks]

silent block.. isn't it an alternator?

[@michaelovitch]

It's an alternator,yes,on wich is mounted a cup,in wich sets of silentblocs seat (the black parts) : ) They reduce mechanical stress and vibrations on the coupling,between the engine and the alternator.

[@tomaszlll7054]

Jest i pomagier.😊😊😊😊😊

[@michaelovitch]

My brother : )

[@tomaszlll7054]

@@michaelovitch nice 😀

[@Yelwas]

9:15 wow I thought mine was bad, until I saw this

[@michaelovitch]

How is yours doing ?

[@michaelovitch]

Yeah ! If you look carefully the feline became a deer...lol

[@aaroncunneen328]

Good stuff mate

[@michaelovitch]

Thanks.

[@alessandropezzella9274]

vu votre vidéo il y a des années de la btaw bmw 75 k

[@michaelovitch]

: ) It's running pretty well now : ) kzbin.info/www/bejne/bqjLhmOkq72popY

[@AgPete139]

At 4:30, how do you remove the cover? I can't seem to jiggle mine off. Does the crank have to be in a certain position?

[@michaelovitch]

There are screws ,and certainly sealant,so it's not coming easily. The seal around the cranck position signal wheel create some reisistance also. No need for a specific position,just be sure you do not forget a screw,and pry gently all around equally to remove it.

[@roynexus6]

How many miles there are on this engine?

[@michaelovitch]

49000 miles

[@Albert1249]

Awesome video! What music did you use?

[@michaelovitch]

Hi,thanks. You have the links in the description : )

[@andylaye6216]

Hi. I have just bought a k75c that’s been sat since 2008. It’s got 77,000 miles on the clock, but has benn services regularly up to that point. I have just bought a battery for it, literally today, so not even attempted to start it yet. Any advice would be great! Thanks.

[@Soggz7785]

michaelovitch Hi. Thank you,and apologies for the late reply. Yes,everything looks where it should be. I am going to attempt in after Xmas. I have bought some Wynns injection cleaner for it,also I will remove the tank dirt and drain out what's in there. Thanks again.

[@michaelovitch]

@@Soggz7785 Have a smooth work.

[@juliangonzales7851]

Soo how much did it cost for all the new parts needed

[@michaelovitch]

Julian Gonzales New exhaust valves are expensive on this bike, 80 each....3 of them here. But the rest is just clips,nuts or bolts,wich are cheap. So, about few hundred for a good running engine once repaired and 450 for the bike itself before to repair. I would say under 1000 easily : )

[@stijnvandamme76]

so how much km were on this engine to be in this state? how bad did it run with that broken valve?

[@michaelovitch]

The odometer said 77 000 kms when i bought it. It was a cop or gendarmerie bike,used by a private person then,for i don't know how much time. It ran quite ok even on nearly three cylinders. You wouldn't even tell if you are not used to the engine running properly. It was just stalling if you revved it quickly. It was badly maintained,dirty injector caused that i think. A lean mixture will ruin valves quite fast.

[@ryoichinakamura5241]

How many miles on the engine?

[@michaelovitch]

49 000 miles,about 79 000 kms. Gendarmerie style life,so mainly open roads or back roads,so no city driving. It makes a difference,being an ex governement machine.

[@cyrilusek]

Thank You !

[@michaelovitch]

Cyril George : ) About what ? I just mess around with my toys lol

[@caitlinwinter3641]

Awesome video thanks!!!

[@michaelovitch]

Thank you : )

[@josephcockerill4423]

hello im doing a project and looking for a small battery to fit my k75 1989 any ideas

[@michaelovitch]

Hello, Whatever smaller battery from an other bike with fuel injection is ok. As long as you have a similar crancking amps it's ok. K75 have big alternators ,and do not use that much current to run. I have installed a 12 amps per hour battery one month ago on mine,wich is smaller than the stock one. You just need to adapt the retaining clamp to the different dimensions of your new battery,wich is quite easy to do,and check the terminals ,to be sure you can screw the wirings on it.

[@josephcockerill4423]

@@michaelovitch thanks very much i will give it a go to you know what the cca is on yours

[@michaelovitch]

@@josephcockerill4423 165 A

[@murdercycle6084]

are the caps for the camshafts numbered?

[@michaelovitch]

Yes, look : kzbin.info/www/bejne/qKatnWyvbt6ShLcm14s

[@williambarkhouse3965]

Where can I buy a top end kit?

[@michaelovitch]

"top end kit k75 " research gives you some results online,or simply source the parts at bmw dealer or bmw parts sellers. It's what i did. Why do you need that ?

[@williambarkhouse3965]

@@michaelovitch i notice some blue smoke on start up. I am at 90k km on the engine. Thought it may need it. Is some smoke normal on the horizontal heads on start up?

[@michaelovitch]

@@williambarkhouse3965 If you park the bike on the side stand,yes,it's normal,the oil will sit in the cylinder,and burn on start up. If it's while you are on the center stand,just check compressions first,it can maybe only be valve guides seals wich are not sealing enough anymore. There is a lot of sudden vacuum when the engine is starting,so oil can be sucked by there.

[@tpvalley7148]

black exhaust valves= fuel burnt with not enough oxygen, not unburnt, just less oxygen available for carbon to bond with so rather than CO u get a lot of C (carbon).

[@michaelovitch]

Here,the valve was missing a piece. 2 bars of compression on this cylinder certainly don't allow a good combustion. I doubt the cylinder was participating to the engine rotation. The valve was wet,not just black of soot. A part of fuel was maybe burning,but not all of it. The smell of gas was present in the exhaust fumes. That's why i wrote unburnt. It's not just running "rich" it's not running at all lol : )

[@tpvalley]

michaelovitch fair enough! is this a 3cylinder version of the k100?

[@michaelovitch]

tpvalley Yes,to be present on the market on the middle size engines (750cc) category. It's lighter,very smooth and built to roll a long time. That's why it was used in the police/gendarmerie here. This one is an ex police or gendarmerie : )

[@CyrusTVirus]

I need to borrow you for my 86 K100 rs build she needs so much work -_- $$$

[@michaelovitch]

+paul enzor Where are you ? US ?

[@gonzalosimon4274]

Dude I need your advice. I recently bought a k75 1989 and after 150 km a rubbing high pitch sound started to sound. Depending on the rpm it was higher or lower pitch. It looked that something was touching/rubbing something. Something that rotates depending of the rpm of the engine. It came suddenly and first time when off when I put the stand on. It started again and went of in a left turn. Third time I decided to accelerate and went off and as sudden as it came it disappeared. It looks that the sound was coming from the valve side. Do you know what can it be? Thanks a lot

[@michaelovitch]

It went off when you used wich stand ? side stand or central stand ?

[@gonzalosimon4274]

michaelovitch hi! Central stand. Basically when the bike moved

[@michaelovitch]

@@gonzalosimon4274 Like you say,your problem occurs when the bike moves. So it's something wich has some play in it,and wich grinds when loose. Since it's related to the engine rpm,i would say that you need to check the timing chain,if it's not loose. Check your oil level. A video would help.

[@gonzalosimon4274]

michaelovitch thanks dude. I’ll check it out tomorrow and I’ll come back to you. Again, thanks a lot

[@michaelovitch]

@@gonzalosimon4274 : ) Don't hesitate.

[@nachocm4870]

Que buen vídeo

[@michaelovitch]

: )

[@ice2000-u7i]

how many passed this engine?

[@michaelovitch]

I don't understand How many ?

[@christophermikrowelle7093]

I like 06:12

[@Cattachmore22]

Good video :)

[@alexmur5751]

Ttx fir 6 13

[@alessandropezzella9274]

Wow che tempi

[@michaelovitch]

Non capisco molto buono,sono francese.

[@benm5407]

looks really neat and sweet. puts my rat to shame though i really shouldnt care! $40 for a Torx key is a rip off, though thats nothing compared to new valves eh?

[@michaelovitch]

: ) Your rat and my neat and sweet bike come from the same place i'm pretty sure lol Mine is a rat too,but disguised with too much black make up,it's a still piece of junk anyway lol It's like a wasted chick that drank too much lol,it's all fucked up under the pretty paint = ) This torx tool is the most wanted here...maybe it can explain the price lol Yes for the new valves,i send the check tomorrow...i feel lighter yet.

[@benm5407]

You could buy a used cylinder head for the price of A valve lol

[@michaelovitch]

Yes,i know... But i'm sure i will not have to open it again and if the short block is dead,i can swap the rebuilt head on my second engine wich have 79 000 kms. I've turned the whole problem of investment in my head and it's the better for me. The head will last for the two engines if i don't blow up myself before them.lol

[@umutatopfajljloumutatopa2934]

6:12 Powa? =)

[@michaelovitch]

heedful : i thought it was a synonym of attentive. crapy dictionnary i guess... Yes the wallet is atom blasted,but no choice... i know a good surgeon,he will fill up the empty space with pork parts,it's supposed to work as good and you see life in pink lol oink oink ! ´ö`

[@kietmoto]

hello

[@michaelovitch]

+haquyyyy Hello : )

[@josefougere5735]

Joli l image a 6 minutes 13 seconde

[@marknorris3769]

6:12

[@michaelovitch]

; )

[@jolivier2810]

6:13 😂

[@michaelovitch]

; )

[@zx8401ztv]

Oh, its a word ive never used so i didnt recognise it, dam thats bad from an english bloke, im nipping to the bottom of my garden to shoot myself ha ha :-)) Ha ha pork parts, your madder than a box of toads lol :-)) Pork parts, im still laughing, oh dear ha ha ha

[@zx8401ztv]

Ahh i see, i must be very odd then, i dont skip videos. Why subscribe to someone you like then skip bits, madness lol. "heedful" ? pardon So now you play the waiting game, hoping the cost of new valves wont make your wallet scream lol :-) And the head reconditioning, will you have to sell a kidney to afford that ha ha :P

[@nikoochouno]

pooma XD

[@michaelovitch]

I don't understand.