# OHC oiling

**URL:** <https://community.cartalk.com/t/ohc-oiling/100751>\
**Category:** General Discussion\
**Created:** [March 4, 2017, 2:41pm UTC](https://community.cartalk.com/t/ohc-oiling/100751 "2017-03-04T14:41:34Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Cavell](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/cavell/32/43396_2.png) [@Cavell](https://community.cartalk.com/u/Cavell)\
**Post date:** [March 4, 2017, 2:41pm UTC](https://community.cartalk.com/t/ohc-oiling/100751/1 "2017-03-04T14:41:34Z")

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my 02 vue is V6 OHC. i noticed 1 bolt that looked like cyl head bolt but it turns out it is an oiling port for top of head. both front/rear heads have it. but only rear head bolt sprays oil when u crank motor. do most OHC cars just pressurize the oil to the cam journals alone? and not send another stream to top of cyl head?

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**Author:** ![Cavell](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/cavell/32/43396_2.png) [@Cavell](https://community.cartalk.com/u/Cavell)\
**Post date:** [March 4, 2017, 4:08pm UTC](https://community.cartalk.com/t/ohc-oiling/100751/2 "2017-03-04T16:08:58Z")

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![](https://global.discourse-cdn.com/cartalk/original/2X/f/f205f81a82e590c45fe4f3f33579535a332e432f.JPG) red arrow shows 1 bolt. about 2" below that bolt is another bolt. both cam banks are separated by valve cover partitions.

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**Author:** ![insightful](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/insightful/32/2732_2.png) [@insightful](https://community.cartalk.com/u/insightful)\
**Post date:** [March 5, 2017, 2:43am UTC](https://community.cartalk.com/t/ohc-oiling/100751/3 "2017-03-05T02:43:12Z")

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> [@Cavell](#):
>
> both front/rear heads have it. but only rear head bolt sprays oil when u crank motor.

So, it appears this “spray” is for misting oil into the cam area for cam-bucket lubrication? If so, I’d think both banks would have this feature. Can you remove this bolt to see if it’s designed as a spray nozzle?

> [@Cavell](#):
>
> do most OHC cars just pressurize the oil to the cam journals alone? and not send another stream to top of cyl head?

I would say “yes.” (Assume you mean, “…and not mist oil separately into the cam area.”)