Water dripping from hood vents is far less intrusive than water being blasted into the engine compartment at 60 miles an hour in a rain storm.
Show me your hood vents
- Thread starter Twopoint
- Start date
on the issue of heat dispersal/dissipation
my 1st design of high line stock fenders and GR inners produced no odd happenings i ever detected.
once the front suspension and brackets were removed for strut towers, it began to show signs if over heating things on the passenger side of the engine bay. the A/C lines would burn you the top on my strut was cooking, the tower was warm enough to heat your lunch.
this was not happening on the driver side at all, that i could find evidence of. i believe the amount of crap on that side forced diversion other directions.
i busted out a 1.5" hole and proceeded to swiss cheese my inner fender skins. this helped about 40% i'd guesstimate but wasn't enough.
i sat in front of the engine running and i could feel the air directed down the more open passenger side of the bay and upward as the fan slammed it into the face of the motor.
this prompted me to then add the hood louver, the big 1 piece deal, but i did not cut the huge holes on the template, i cut about 1/2 of the massive front squares and just a 2.5" hole saw in a few spots beyond that. this brought my temps down an estimated 80-85% at that strut tower and strut head.
i cannot attest to any issue being solved other than the only vents i had were right around my strut, causing it to heat as air pressure found the fastest way out. i can attest to venting allowing hot air more direction out of the engine bay.
my 1st design of high line stock fenders and GR inners produced no odd happenings i ever detected.
once the front suspension and brackets were removed for strut towers, it began to show signs if over heating things on the passenger side of the engine bay. the A/C lines would burn you the top on my strut was cooking, the tower was warm enough to heat your lunch.
this was not happening on the driver side at all, that i could find evidence of. i believe the amount of crap on that side forced diversion other directions.
i busted out a 1.5" hole and proceeded to swiss cheese my inner fender skins. this helped about 40% i'd guesstimate but wasn't enough.
i sat in front of the engine running and i could feel the air directed down the more open passenger side of the bay and upward as the fan slammed it into the face of the motor.
this prompted me to then add the hood louver, the big 1 piece deal, but i did not cut the huge holes on the template, i cut about 1/2 of the massive front squares and just a 2.5" hole saw in a few spots beyond that. this brought my temps down an estimated 80-85% at that strut tower and strut head.
i cannot attest to any issue being solved other than the only vents i had were right around my strut, causing it to heat as air pressure found the fastest way out. i can attest to venting allowing hot air more direction out of the engine bay.
Would that be 60 mph after passing through the radiator and a/c condenser or indirectly via splashing up from the bottom? I don't see how the engine gets seriously blasted in a rain storm, at least not in my experience the couple times I've had the hood up after driving in the rain. I do understand how water blasted at the engine can cause electrical problems but I've only experienced that after pressure washing the engine at the car wash.
Ron Hockett
TJ Enthusiast
http://jeeptalk.net/index.php?showtopic=196
https://wranglertjforum.com/threads/nicks-yellow-throwback-jeep.26039/page-42
cherokee 5.9L Mopar hood vents
https://wranglertjforum.com/threads/nicks-yellow-throwback-jeep.26039/page-42
cherokee 5.9L Mopar hood vents
Did you have any kind of rough idle issues when on trails / offroading at slow speeds for a while before you added those and if so did adding those help? My Jeep will start idling really rough after I've been on trails after a while at slow speeds and I'm sure it's the heat soak issue. Just wondering if this would be a solution.
Ron Hockett
TJ Enthusiast
Mine does vent hot air, but I did do a mod to the water pump, fan, and replaced the radiator to keep the temp down. No more issues.
The only rough idle mine has ever had, and still occasionally has, is after a hot restart. Venting may have helped some. But at least to the extent that mine is vented, is still something that happens sometimes.
Mine has a rough idle also after a hot start. If I fill up with gas its usually ok but if I am stopped for about 10 minutes it runs pretty rough.
Ron Hockett
TJ Enthusiast
Put in a heavy duty water pump and a Ford Explorer conversion (fan clutch and 10 blade fan). I had never heard of it, but when my mechanic called the supplier (on speaker phone) it was obvious that they had done this before. The only time it hits 210 now is in stopped traffic with the A/C running. I should mention my 4.0 is turbocharged, and I had to cut the hood for the cold air intake for that years ago so cutting the hood for the louvers wasn’t a big deal for me (cutting it for the turbo WAS a big deal at the time).
Ron Hockett
TJ Enthusiast
C.J. Roberts
TJ Addict
I put these Genright long narrow vents on a few years ago. The driver's side one is directly over the exhaust manifold, the other just mirrors it. It doesn't do anything for engine temp, but it does let hot air out easier. I originally did it to try to stop heat soak. Of course, about two weeks later I heard about the factory solution.
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I know when I open my hood I can not hardly touch or hold the hood scotch rod, much less touch anything else under the hood. The heat being sucked into the intake has to be extreme.
If there is something out there that can vent heat and provide cooler air intake for the manifold its got to be better for the jeep and all components.
If there is something out there that can vent heat and provide cooler air intake for the manifold its got to be better for the jeep and all components.