- Posts: 85
- Thank you received: 1
Pulled head and found 1 oily combustion chamber
- Dirtyhands
- Topic Author
- Offline
- User
Thank you,
Zac
Attachment IMG_0247(1).JPG not found
1977 KZ650B
KZ750H Motor Installed
gpz750 Intake cams Kz750 Exhaust Cams
VM28SS Mikuni Pumper Carbs
Elecrosport Stator and Regulator Rectifier
Dyna 3ohm coils
Derale Oil Cooler
4into1 delkevic Pipes
Pod Airfilters
Please Log in or Create an account to join the conversation.
- SWest
- Offline
- Sustaining Member
- 10 22 2014
- Posts: 22987
- Thank you received: 2750
Steve
Please Log in or Create an account to join the conversation.
- Dirtyhands
- Topic Author
- Offline
- User
- Posts: 85
- Thank you received: 1
Attachment IMG_0249.JPG not found
Attachment IMG_0252.JPG not found
Attachment IMG_0250.JPG not found
1977 KZ650B
KZ750H Motor Installed
gpz750 Intake cams Kz750 Exhaust Cams
VM28SS Mikuni Pumper Carbs
Elecrosport Stator and Regulator Rectifier
Dyna 3ohm coils
Derale Oil Cooler
4into1 delkevic Pipes
Pod Airfilters
Please Log in or Create an account to join the conversation.
- SWest
- Offline
- Sustaining Member
- 10 22 2014
- Posts: 22987
- Thank you received: 2750
Steve
Please Log in or Create an account to join the conversation.
- Dirtyhands
- Topic Author
- Offline
- User
- Posts: 85
- Thank you received: 1
Attachment IMG_0254(1).JPG not found
Attachment IMG_0253.JPG not found
Attachment IMG_0255.JPG not found
as in line with the other cylinders 155
1977 KZ650B
KZ750H Motor Installed
gpz750 Intake cams Kz750 Exhaust Cams
VM28SS Mikuni Pumper Carbs
Elecrosport Stator and Regulator Rectifier
Dyna 3ohm coils
Derale Oil Cooler
4into1 delkevic Pipes
Pod Airfilters
Please Log in or Create an account to join the conversation.
- SWest
- Offline
- Sustaining Member
- 10 22 2014
- Posts: 22987
- Thank you received: 2750
Steve
Please Log in or Create an account to join the conversation.
- Dirtyhands
- Topic Author
- Offline
- User
- Posts: 85
- Thank you received: 1
1977 KZ650B
KZ750H Motor Installed
gpz750 Intake cams Kz750 Exhaust Cams
VM28SS Mikuni Pumper Carbs
Elecrosport Stator and Regulator Rectifier
Dyna 3ohm coils
Derale Oil Cooler
4into1 delkevic Pipes
Pod Airfilters
Please Log in or Create an account to join the conversation.
- SWest
- Offline
- Sustaining Member
- 10 22 2014
- Posts: 22987
- Thank you received: 2750
Steve
Please Log in or Create an account to join the conversation.
- wrenchmonkey
- Offline
- User
- Posts: 568
- Thank you received: 75
Dirtyhands wrote: Hello all. I had to pull the head off my bike so that I could helicoil a stripped cam bolt hole. That job is done but I noticed while all the combustion chambers had quite a bit of carbon build up (That I intend to clean off) One of them is oily. What does it mean? is there anything I need to do while I have the head off (valve seals?) I bought a new head gasket and oil seal but do I have to replace the base gasket even though I haven't lifted the jug?
Attachment IMG_0247(1).JPG not found
Hey Zac!
Just curious, could it be possible that "oily-ness" is just penetrating oil that leaked in to that cylinder during the head removal?
The reason I ask is.
1) You mentioned good and equal compression.
2) That spark plug looks pretty much like the other - not all blackened but so-called "coffee and cream" which is good; right?
3) In the photo, there appears to be some shiny hazy glow between the oiling port (where the oblong oil seal goes) that wraps around the cylinder head / bore in question. As though maybe something leaked in and around that head recently.
My vote is to replace the valve stem seals.
Viton valve stem seals are inexpensive and you are there now. I had the machine shop replace them on KZombie's cylinder head a week ago.
Please Log in or Create an account to join the conversation.
- SWest
- Offline
- Sustaining Member
- 10 22 2014
- Posts: 22987
- Thank you received: 2750
Steve
Please Log in or Create an account to join the conversation.
- Dirtyhands
- Topic Author
- Offline
- User
- Posts: 85
- Thank you received: 1
1977 KZ650B
KZ750H Motor Installed
gpz750 Intake cams Kz750 Exhaust Cams
VM28SS Mikuni Pumper Carbs
Elecrosport Stator and Regulator Rectifier
Dyna 3ohm coils
Derale Oil Cooler
4into1 delkevic Pipes
Pod Airfilters
Please Log in or Create an account to join the conversation.
- Dirtyhands
- Topic Author
- Offline
- User
- Posts: 85
- Thank you received: 1
1977 KZ650B
KZ750H Motor Installed
gpz750 Intake cams Kz750 Exhaust Cams
VM28SS Mikuni Pumper Carbs
Elecrosport Stator and Regulator Rectifier
Dyna 3ohm coils
Derale Oil Cooler
4into1 delkevic Pipes
Pod Airfilters
Please Log in or Create an account to join the conversation.