You do that to set the initial timing. Then hook it back up to manifold vacuum to do the carburetor tuning (at least you would if you had one).
CK5
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Ok drove around for 45 mins.
At first i thought we had it nailed. Temps never went over 206 in stop and go trans temps looked good.
Towards the end though i hit 217 at a light and driving was sitting around 213. Im not sure if it would have gone over 217 or not because the light turned and i had to move. Its weird, it does great until it hits 210 then it climbs pretty fast. I even let it idle for 10 mins at 206 no problem. But once it hit the 210 it just wanted to keep going up.
Also purely out of curiosity i stopped and grabbed the fan and even with the engine showing 215 that clutch didnt seem all that firm...
I also dont get that satisfying loud fan noise you used to get on these old cars.
Timing may be a factor but i bet a better fan clutch would help. Or adding that second pusher fan
At first i thought we had it nailed. Temps never went over 206 in stop and go trans temps looked good.
Towards the end though i hit 217 at a light and driving was sitting around 213. Im not sure if it would have gone over 217 or not because the light turned and i had to move. Its weird, it does great until it hits 210 then it climbs pretty fast. I even let it idle for 10 mins at 206 no problem. But once it hit the 210 it just wanted to keep going up.
Also purely out of curiosity i stopped and grabbed the fan and even with the engine showing 215 that clutch didnt seem all that firm...
I also dont get that satisfying loud fan noise you used to get on these old cars.
Timing may be a factor but i bet a better fan clutch would help. Or adding that second pusher fan
With it being warm the clutch part of the fan should be really stiff.
Swapped to my other hayden 2797 severe duty fan both clutches feels the same at temp as it does cool....
I keep expecting that loud fan noise where you almost can't speak over the fan.. never happens. Even hot hot
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I mean we could try a flex fan.... not like I'll miss a little hp
I put the severe/hd cooling fan clutch on my jeep and you can really hear the fan noise when it kicks in.
Yeah thats what i have but i never hear it.
then again its hard ti hear anything over my exhaust.But i popped the hood and it feels like it should be pushing a lot more air...
Bonus points if anyone can find a better fan clutch than the hayden 2797
Not getting the correct air flow through to the clutch to activate it will not allow it to come on properly. Just curious but have you tried a flex fan with the solid mount spacer? Not what I would run since it's basically an all the time on fan but just wondering if it would make a difference.
Hmm, yeah my jeep is pretty quiet. I’ll tell you what brother, I sure feel your pain. I fought and fought my gen v 454 with cooling. Have you flushed and flushed and back flushed that whole sumbitch real good?
Its a pretty new engine, less than 10k miles. Totally professionally rebuilt radiator and all new hoses. Shit i even have a new heater core. All new fluids not sure if i could flush it any more than that
Im about to give in and try a flex fan. I have one on another motor i own . I know those pull a ton of air.
But i need @kgblazerfive approval before trying anything new
You can try a flex fan, will let you know if the clutch is the issue.
After that do you think advancing the timing? Maybe 30 at idle?
one step...........
I think I've only heard my clutch fully engage this summer was on the desert trip. It was pushing 195 on the gauge. But when it was on, I know it was on. You can hear mine. I think using the 9 blade plastic fan that is stock for the 5.3 or 6.0 is what really pulls it on mine.
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I have built a few 454 Mark IV engines (back in the day). One of the things I noticed about every one of those 454 engines is that they had a lot of casting flash blocking the coolant passages in the block and head. When I would build one of those 454 engines, I would de-burr all the coolant passages between the head and block, and clean out the blocks coolant passages as good as possible, which seemed to help a lot with the cooling issues 454 engines are known to have. All of my old Mark IV 454 carbureted engines ran pretty steady at 180 degrees under all conditions. I am not saying this is the problem with your engine though.
So i do have a flex fan and a spacer, my only concern is even though its a 19" fan im reading a lot of these are only good up to a 4.1L engine....
I wonder if i should just order the right fan or try this one and see what happens
Searching the part number isnt pulling anything up
I wonder if i should just order the right fan or try this one and see what happens
Searching the part number isnt pulling anything up
Screw it. I ordered the correct fan for my application. They are cheap. That way i can say for sure yes or no on the flex fan. Lucky for me i have a spacer and hardware
You can start decorating the shop with cooling fans, clutches and radiators
I have so many!
