Cylinder head removal

[DrDonnyBrago]

Hi, how difficult is it to remove the cylinder head on a 600cc IL4 (CBR 600F 2001)? Presumably a new gasket is essential?

Various attempts of persuading a header (edit: exhaust) stud to come out have failed and I don't really trust myself to drill it out straight enough with the engine still in the bike. I was thinking of removing the head, taking that to a engineering company and having it drilled out/helicoiled by someone else.

It could probably be drilled out on the bike, but my less than perfect drilling skills make this difficult. If I were to move it to a garage, are they likely to remove the front wheel and drill it out in the bike or feck around getting the head off and onto a pillar drill?

[Itchy]

You mean an exhaust stud?

Depends on just how hard they are stuck in tbh...

I drilled out two snapped ones, but this was after I had copper greased them and also used a tap and die set to clean the threads of the old ones. I removed the front wheel (easy) and crouched into the small space to drill them out. The key is to go very very slowly so that you can see the drill bit going round and round and some good quality bits also.

https://www.bikechatforums.com/viewtopic.php?t=148552&

If you destroy the bolt/threads helicoil it. I believe Gman had something similar on his CBR where peter drilled it out while still in the bike (the engine)
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Spain 2008France 2007Big one 2009 We all die. The goal isn't to live forever, the goal is to create something that will. In the end, your life will flash before your eyes. Make sure it is worth watching.

[el_oso]

not really going from experience of your bike, but removing the cylinder head is a pretty easy task. just lengthy
take the rocker cover off
take off your cams
undo 6/8/10 bolts that hold your cylinder head on. remove any other tubes/connections from the head, and lift away (without dropping the cam chain)

problems you may encounter and need to figure out for yourself or wait until someone has done this on your bike
1. water cooled, can be a lot of stuff to take off before you can get to the head.
2. does the cylinder head come off while still in the bike or does the frame get in the way?
3. you will need a new gasket and they are not that cheap
4. putting the head back on can be a pain in the arse. for bucket and shims you need to remember what holes each bucket came from.
5. re-doing timing can be a bit of a pain in the arse if you haven't done it before. once you have timed it up and you believe it is ok. turn the crank round a few times by with a spanner/ratchet and make sure nothing is hitting anyything else.

personally. (i am assuming you mean exhaust stud btw) that you would like them to drill the stud out while the engine is in the bike.
another point to add is that it is probably easier to drop the engine out the bike instead of trying to remove the head
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Duke 390
Previous: '05 XR125L | '96 XJ600S Diversion |'05 Suzuki GSXR1000 | '05 Honda CBR125-R | '97 YZF 600R Thundercat | '11 Honda CBR250
Car: Jeep Wrangler 4.0L

[DrDonnyBrago]

[Itchy]

[DrDonnyBrago]

[Casper]

If you take the head of and the rocker cover, loosen bolts in a sequence or you run the risk of warping. Manual will tell you the sequence for your model. 1/4 turn a bolt and then the farthest away tends to be the norm but doble check manual for your bike. Same goes for assembly.

[Digit]

From one who has suffered, always attempt to remove the nuts or studs whilst the engine is hot!

Roy.
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Happy daze!

[Pete.]

Have you thought about taking it to an engineering company and asking them to drill the broken parts out in-situ? They might have a go at it with no guarantees but some people are very handy with a pistol-drill. I'd say the chances of success would be quite high if I attempted it myself.
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a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[warped one]

Each time, i've removed a cylinder head i've used a rubber mallet or hammer and block of wood to 'break the seal'

One thing to remember is the fun you'll have trying to put it back on.
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amnesia - Never in the history of usernames has one been more accurate. Warped indeed. You sir are a fecking oddball.