87crewdually
Full Access Member
Interesting concept with the flap idea. It must work, Volkswagen used it for years on there liquid cooled vehicles.
Few things going on, now have audio
- Thread starter Billy Goat Burner
- Start date
Interesting concept with the flap idea. It must work, Volkswagen used it for years on there liquid cooled vehicles.
GenLightening
Yeah, it's a CHEVY!
Basically, they open up the shroud so air can flow through. The fans, when they aren't spinning, will block the airflow and make things heat up more. It's been used a lot over the years by many makers. Mine's all experimental at this point. Once the engine is in and hooked up I can see how it works unloaded. Then it's camping season! And, with the 8000ft and up mountains around here, it will be quite the test. All I really want is more than 5mpg and ANY power and I'll be happy!
Billy Goat Burner
Billy Goat Burner
that is a pretty nice shroud you got there would you explain how they are made or some closer pics?
Ford428CJ
FE Freak!
I know the stock Diesel is a 4 row but I'm running the original one in my 1979 F-250 3 row gasser now.
GenLightening
Yeah, it's a CHEVY!
Shrouds
Pretty much you get some sheet aluminum and a brake. Make a cardboard pattern and go to town. The hardest part is figuring out which bends to make first and so on. There are some ready made units, but they usually don't fit quite as well, which reduces their efficency. Mine covers all the rows so hopefully it does the job.
Pretty much you get some sheet aluminum and a brake. Make a cardboard pattern and go to town. The hardest part is figuring out which bends to make first and so on. There are some ready made units, but they usually don't fit quite as well, which reduces their efficency. Mine covers all the rows so hopefully it does the job.
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GenLightening
Yeah, it's a CHEVY!
How big is it compared to the 4 row and how does it do unloaded? Mines a 4 row, but slightly smaller. I really don't want to try to fit the Ford unit in there, although it's been done, just a whole lot of work. Not that this whole swap isn't!
jimraelee
Full Access Member
that is key, otherwise you loose efficiency driving down the road. The air rushing thru the rad will not be as effective in the blocked areas. VW had that on there cars for a while when they ran a covered fan shroud as you have...
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Jaybee
Registered User
My truck makes the same noise - you've got a worn out valve guide! The sloppy guide lets the valve wobble and not close fully causing the "chuff" sound in the exhaust. You can probably hear it muffled around the valve covers as well. Mine is to the point of leaking exhaust into the valve cover.
Fix it before you drop that valve, because it's catastrophic - and it's gonna happen REAL soon!
Fix it before you drop that valve, because it's catastrophic - and it's gonna happen REAL soon!
Don't underestimate that '79's radiator. It's got a fair amount of surface area and some pretty serious sized endtanks. At least on my '72 with a 390 I do.
I do have a customer with a '78 with a 6.9 and he is running the big block gasser radiator and hasn't had any overheating issues to this date. He's got AC too.
Jaybee
Registered User
I just added a post with some pics showing exactly what makes that noise in the exhaust.
Look at this post: http://www.oilburners.net/forums/showthread.php?t=21301
Look at this post: http://www.oilburners.net/forums/showthread.php?t=21301
