Flashflood
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Sohc motor from 2003 and onward
- Thread starter Flashflood
- Start date
Devan
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- 01 BoostedXPLR Sport
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- Devman
How do the cams or the cam lobes get oil with no sprayer tube? Does the oil come up through the cam cap towers? Does oil travel through the inside of the cam at all? I have 4 4.0s sitting in my garage right now and the freshest one I got is from a Stang which I just realized has no sprayer tubes lol. I'm adding my balance shaft lol and doin a full refresh on the cyl heads and resurfacing the block and head decks, lapping the valves and new valve seals and inspecting and measuring everything etc etc lol. I guess I'll figure it out when I pull the cams tho. I guess I'm just thinking that having the oil sprayers would be better then not having them, if so then it's onto the 2nd best candidate engine 
, these things are a dime a dozen lol. What do you guys think? Oil sprayer tubes better? Or no oil sprayers better? Or does the cam still get sufficient oiling without the sprayers? Maybe oil passage design is a little different?
*Update*
Well I figured this out the next day. The 4.0 SOHCs that don't have the oil sprayer tubes on top still get oil to the cam lobes. The oil comes straight up through the hydraulic lifters and squirts into the roller followers (rocker arms) and the roller followers have oil squirters on them that change the direction of the oil about 80 to 90 degrees towards the center valley of the engine and it squirts the oil right onto the roller follower wheel which then transfers to the cam lobes from there. I haven't seen the lil squirters in action
but they might even squirt the oil right where the cam lobe and roller wheel make contact or maybe it just hits one or the other. Either way cam lobes are getting oil even without the spray tubes. The oil squirters on the roller followers look like they would squirt oil better then the oil tubes but the oil tubes have the advantage of using gravity to drop the oil right on the cam lobes from above. After all that I'm kinda leaning towards the oil squirters on the roller followers being better then the upper oil tube sprayers cuz I don't think they'll clog up as easily and I think the oil tube sprayers would break or fail wayy before the roller follower squirters would have any kind of problem.
, these things are a dime a dozen lol. What do you guys think? Oil sprayer tubes better? Or no oil sprayers better? Or does the cam still get sufficient oiling without the sprayers? Maybe oil passage design is a little different?*Update*
Well I figured this out the next day. The 4.0 SOHCs that don't have the oil sprayer tubes on top still get oil to the cam lobes. The oil comes straight up through the hydraulic lifters and squirts into the roller followers (rocker arms) and the roller followers have oil squirters on them that change the direction of the oil about 80 to 90 degrees towards the center valley of the engine and it squirts the oil right onto the roller follower wheel which then transfers to the cam lobes from there. I haven't seen the lil squirters in action
but they might even squirt the oil right where the cam lobe and roller wheel make contact or maybe it just hits one or the other. Either way cam lobes are getting oil even without the spray tubes. The oil squirters on the roller followers look like they would squirt oil better then the oil tubes but the oil tubes have the advantage of using gravity to drop the oil right on the cam lobes from above. After all that I'm kinda leaning towards the oil squirters on the roller followers being better then the upper oil tube sprayers cuz I don't think they'll clog up as easily and I think the oil tube sprayers would break or fail wayy before the roller follower squirters would have any kind of problem.Explorer Features
Explorer Features
