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Post by 307ci on Jan 12, 2011 0:15:37 GMT -5
DM i have a question i see in your vids that ur rad hoses are taped whats that about i do it too, its more than one purpose, keeps your fan from cutting thru it, if it cracks itll hold water for a while, and it externeral motor heat away from it
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Post by Engineerguy on Jan 12, 2011 1:03:33 GMT -5
I have actually stopped taping my hoses. In the end, if you need to pull the hoses off to swap the radiator, the tape just leaves some seriously sticky residue all over, making it a pain to change. Also, I have experience in heat transfer and thermo dynamics and the tape actually functions as an insulator, causing the hoses to increase in temperature. This causes the rubber to slowly expand and could potentially cause it to be more susceptible to rupture. Since I have stopped, the hoses have held up great and have not lost a hose.
But thats just my opinion, I still see a lot of people do it. To keep the hoses away from the fan, I would suggest you use some long Zip Ties fixed in the middle and add tension away from fan. Be sure to leave some play in them though for movement.
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Post by William76x on Jan 12, 2011 8:08:40 GMT -5
so if the front bends bad your fan will not cut in it.
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Post by DemolitionMission on Jan 12, 2011 9:52:10 GMT -5
If the fan hits the hose it will still cut through the duct tape and hose, it might last a little bit longer, but not much. I mainly wrap my hoses to help keep them from bursting open under pressure of the heated water. All the duct tape layers just add that many more layers for the water to rip through.
With my new style of hoses I have not wrapped them in tape. In my thunderbird I have long ribbed hoses with springs built inside them. These hoses already come stronger than standard and the springs prevent them from kinking shut easily.
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Post by Engineerguy on Jan 12, 2011 13:30:39 GMT -5
My hoses are the same as DM's. And I agree, the tape will do little to save your hose from a fan striking it. I have also solved that issue by not running a mechanical fan in the derby. Instead I use an old electric fan from a Toyota Camry we ran a few years back. Works great and gives both more clearance for the radiator and front end to move back, and for the front end to bend up. Overheating has not been an issue for me yet either.
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Post by 307ci on Jan 12, 2011 13:51:50 GMT -5
yea, i know those hoses, i used them last year when i had to loop my hoses for the consi and feature... there to expensive for my liking and thats even with my dad employee discount.... and as far as the electric fan goes, i dont run an alternater so that would suck to much joice from my batteries for my liking and i need all the amps to crank that i can get since i run BBMs
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Post by Engineerguy on Jan 13, 2011 0:55:23 GMT -5
yea, i know those hoses, i used them last year when i had to loop my hoses for the consi and feature... there to expensive for my liking and thats even with my dad employee discount.... and as far as the electric fan goes, i dont run an alternater so that would suck to much joice from my batteries for my liking and i need all the amps to crank that i can get since i run BBMs Makes sense to me. I run an alternator on my 460, its down and out of the way. Some places where I run you can have two batteries, so I am considering adding another in the car. But I also have a big battery with 1000 cranking amps, so really don't have an issue. I found my hoses in a junk yard and were cheap. But I got lucky.
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Post by 307ci on Jan 13, 2011 3:29:01 GMT -5
i run 2 used semi batteries and still run out of cranking amps rather fast... and my new hoses were like 50 bucks for like 2 ft
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Post by hardhitinu on Jan 13, 2011 10:45:52 GMT -5
you guys running these BBMs are you guys running a tork reduction starter thats what my brother runs on his BBMs and it saves the amps big time as for the hoses I run the hoses with the springs in them as well haven't had an inssue yet
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TUDE
Rookie
if you dont like what i say dont read it
Posts: 79
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Post by TUDE on Jan 13, 2011 12:35:10 GMT -5
I do it since I saw this happen on a driver... If you ever cut into one you'll see they have strings, like belts in a tire, when the string breaks it swells up alot! This way maybe if one does do it I'll keep my water just a little longer. I don't wrap them each with a roll just 2-3 good tight passes. That's the only thing I've used tape for on my cars in years.
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Post by 307ci on Jan 14, 2011 0:05:20 GMT -5
mine was a tork reduction, rebuilt NAPA POS, my motor ran so good tho that after it did finally die it wouldnt even turn over anymore cuz the starter was soo hot... just bought the starter less than a week before i ran it so i was really disappointed but the motor itself did its job since it ran 15 minutes with no water
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Post by rjmracing on Sept 18, 2011 1:32:41 GMT -5
best one ive had in a derby was a 400m. ran a 302 out of water in my tow rig got so hot it locked up. had a buddy pull car home went back for truck hit the key fired right up drove it another 50k miles after that before i sold it gota love the 5.0
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Comet_Cyclone
Backyard Mechanic
rookie
Comet Cyclone 1964
Posts: 323
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Post by Comet_Cyclone on Dec 18, 2011 3:05:39 GMT -5
Ran a 390 for years dry block. runs about 30-45 minutes or so if tuned right.Motor is tired now so i'm gonna try a 351w stroker this year and see how it holds up.
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Post by etownrdnck on Dec 18, 2011 12:48:23 GMT -5
i had a 351w in a 70s ford truck talkin about one mean truck especially in 4x4 good motors. but i gotta say i have ran nothin but 302s so far and they seem to hold up well
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