Cantedvalve 128 Report post Posted April 15, 2019 Kicking this idea around. On my intake, I have a large open area between runners 4 and 8. My PCV hose connects to the back of the carburetor. What if I put the valve itself into the intake in that open area? With the appropriate baffle on the underside. Would be a cleaner look than running it to the valve cover. What you guys think? Any downfalls you see? Quote Share this post Link to post Share on other sites
Ridge Runner 1,112 Report post Posted April 15, 2019 It would not remove crank pressure ,it would be working backwards,un less you mean it will be going into the crank case ? Quote Share this post Link to post Share on other sites
barnett468 418 Report post Posted April 16, 2019 It will work the same except it will be exposed to a lot more oil even with a baffl;e, so you might also need to add an oil catch can. Quote Share this post Link to post Share on other sites
barnett468 418 Report post Posted April 16, 2019 8 hours ago, Ridge Runner said: It would not remove crank pressure ,it would be working backwards,un less you mean it will be going into the crank case ? He means into the intake valley between the intake runners, not in the intake runners. Quote Share this post Link to post Share on other sites
JayEstes 172 Report post Posted April 17, 2019 I have a few random thoughts: I'm not sure how similar the pressures and airflow are inside the intake -vs- inside the valve cover. If different at all it might affect the performance of the PCV. There's obviously a lot more fuel in the intake than in the valve covers. Will exposure to ethanol in the gas ruin the PCV? If the PCV vents, will you smell the gas? Surely a statement of the obvious: You would have to drill the intake off the engine, otherwise - metal shards in the engine. IDK. Seems like a big change. I've not seen it done, but not saying it can't be done. Quote Share this post Link to post Share on other sites
1969_Mach1 333 Report post Posted April 17, 2019 Just leave the PCV in the valve cover. Quote Share this post Link to post Share on other sites
Rsanter 152 Report post Posted April 17, 2019 What engine? early small blocks and even FE engines has their PVC located there. They used a mesh basket as an oil trap. there is not much oil splashing in the lifter valley. if you have a baffle and some kind of oil trap you will be fine Quote Share this post Link to post Share on other sites
barnett468 418 Report post Posted April 17, 2019 7 hours ago, JayEstes said: I'm not sure how similar the pressures and airflow are inside the intake -vs- inside the valve cover. The pressure is identical. Quote Share this post Link to post Share on other sites
Cantedvalve 128 Report post Posted April 18, 2019 It’s not a now thing. Maybe next winter. Quote Share this post Link to post Share on other sites
stangman69 17 Report post Posted May 13, 2019 Researching my own eventual installation of a PCV valve...probably going to use the adjustable one. The Fox Mustangs had it mounted at the back of the intake with a line running out to a valve cover. I planned to put an adjustable valve in that spot, and run the intake line to either (or even both) valve covers with a catch can in between possibly if oil pickup seems like a problem. Quote Share this post Link to post Share on other sites
barnett468 418 Report post Posted May 13, 2019 2 hours ago, stangman69 said: Researching my own eventual installation of a PCV valve...probably going to use the adjustable one. These are mostly useful on carbureted engines that have cams that are bigger than stock. Quote Share this post Link to post Share on other sites