04-22-2025, 10:15 AM
I just opened the valve cover a few days ago to do the 4 small o rings in the PAIR valve system because the new noise was driving me crazy from them leaking.. tank had to come off but it was honestly still pretty tight under there. It would have been more of a project IMO to get the cover off completely instead of just lifting it up to get the o rings/seals out like I did. It's definitely doable but you'll have to remove some more stuff to make some room. I meant to do a write up and forgot, I may just do it on the new cb1100 net site.
Off topic but I took the advice of a 2014 owner on YouTube and added a 1/2 ID x 7/8 OD - 18 gauge machine bushing/washer under my front valve cover bolts to compress the front of the cover down slightly more because there is a surprising gap between the cover and heads where the pair valve seal ends up leaking under load... so I would also replace those 4 small seals/gaskets if you are already taking the cover off.
Personally I would wipe clean along the gasket and check the valve cover bolts to make sure they're evenly tight.
I was surprised to see all of the clamps on the intake boots were loose incidentally when I was checking stuff while I was tinkering.![[Image: e860b4213886d3750e5b8aa7412daf18.jpg]](https://cb1100forum.net/forum/uploads/imp/202504/e860b4213886d3750e5b8aa7412daf18.jpg)
![[Image: fc6078337a5ece9073f09e6dac71d8d5.jpg]](https://cb1100forum.net/forum/uploads/imp/202504/fc6078337a5ece9073f09e6dac71d8d5.jpg)
![[Image: 7eb6f8bbd462b4b928ac909259aaf339.jpg]](https://cb1100forum.net/forum/uploads/imp/202504/7eb6f8bbd462b4b928ac909259aaf339.jpg)
![[Image: b808fd97a278985b3afe4c2bdd161327.jpg]](https://cb1100forum.net/forum/uploads/imp/202504/b808fd97a278985b3afe4c2bdd161327.jpg)
![[Image: 03db06d4befcf6bed142af8df20fa457.jpg]](https://cb1100forum.net/forum/uploads/imp/202504/03db06d4befcf6bed142af8df20fa457.jpg)
![[Image: 5e07adaf9855a0d2032183121c4ab05b.jpg]](https://cb1100forum.net/forum/uploads/imp/202504/5e07adaf9855a0d2032183121c4ab05b.jpg)
![[Image: 5bd9cf37a418caa2a4b6f4c4799e2657.jpg]](https://cb1100forum.net/forum/uploads/imp/202504/5bd9cf37a418caa2a4b6f4c4799e2657.jpg)
![[Image: 61fdbd9c962ad58dbd8a60aba3cf7167.jpg]](https://cb1100forum.net/forum/uploads/imp/202504/61fdbd9c962ad58dbd8a60aba3cf7167.jpg)
2014 CB1100, 1981 KZ440 LTD, 1993 Yamaha XJ600 Seca, 1994 Yamaha XJ600 Seca
Off topic but I took the advice of a 2014 owner on YouTube and added a 1/2 ID x 7/8 OD - 18 gauge machine bushing/washer under my front valve cover bolts to compress the front of the cover down slightly more because there is a surprising gap between the cover and heads where the pair valve seal ends up leaking under load... so I would also replace those 4 small seals/gaskets if you are already taking the cover off.
Personally I would wipe clean along the gasket and check the valve cover bolts to make sure they're evenly tight.
I was surprised to see all of the clamps on the intake boots were loose incidentally when I was checking stuff while I was tinkering.
![[Image: e860b4213886d3750e5b8aa7412daf18.jpg]](https://cb1100forum.net/forum/uploads/imp/202504/e860b4213886d3750e5b8aa7412daf18.jpg)
![[Image: fc6078337a5ece9073f09e6dac71d8d5.jpg]](https://cb1100forum.net/forum/uploads/imp/202504/fc6078337a5ece9073f09e6dac71d8d5.jpg)
![[Image: 7eb6f8bbd462b4b928ac909259aaf339.jpg]](https://cb1100forum.net/forum/uploads/imp/202504/7eb6f8bbd462b4b928ac909259aaf339.jpg)
![[Image: b808fd97a278985b3afe4c2bdd161327.jpg]](https://cb1100forum.net/forum/uploads/imp/202504/b808fd97a278985b3afe4c2bdd161327.jpg)
![[Image: 03db06d4befcf6bed142af8df20fa457.jpg]](https://cb1100forum.net/forum/uploads/imp/202504/03db06d4befcf6bed142af8df20fa457.jpg)
![[Image: 5e07adaf9855a0d2032183121c4ab05b.jpg]](https://cb1100forum.net/forum/uploads/imp/202504/5e07adaf9855a0d2032183121c4ab05b.jpg)
![[Image: 5bd9cf37a418caa2a4b6f4c4799e2657.jpg]](https://cb1100forum.net/forum/uploads/imp/202504/5bd9cf37a418caa2a4b6f4c4799e2657.jpg)
![[Image: 61fdbd9c962ad58dbd8a60aba3cf7167.jpg]](https://cb1100forum.net/forum/uploads/imp/202504/61fdbd9c962ad58dbd8a60aba3cf7167.jpg)
2014 CB1100, 1981 KZ440 LTD, 1993 Yamaha XJ600 Seca, 1994 Yamaha XJ600 Seca
