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Gates p/n: 21505 hose issues

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Old 08-04-2010, 07:56 AM
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Gates p/n: 21505 hose issues

I seem to recall someone else having the same issue. This hose when trimmed still is a bigger diameter than the radiator and water pump. I took a section of correct diameter hose, put it on then installed the Gates hose. It was a tight fit but with the hose clamp it *might* hold.

That band aid should be ok for the initial start up, but what's the deal with this hose?
Old 08-04-2010, 09:20 AM
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Re: Gates p/n: 21505 hose issues

I'm using it even though it's huge. I have it fastened down pretty good with a hose clamp, haven't found any leaks yet.
Old 08-04-2010, 02:16 PM
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Re: Gates p/n: 21505 hose issues

Same problem here, I trimmed it and it was still huge so I clamped the shoot out of it.
Old 08-04-2010, 03:26 PM
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Re: Gates p/n: 21505 hose issues

What I may try IF mine ever slips off is put something around the outlet on the pump to make it closer to the diameter of the hose, like wrap a ton of electricaltape around it or something. But like I said, it doesn't leak a drop so I'm not worried about it at this point.
Old 08-04-2010, 04:48 PM
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Re: Gates p/n: 21505 hose issues

Originally Posted by BlueZee28
What I may try IF mine ever slips off is put something around the outlet on the pump to make it closer to the diameter of the hose, like wrap a ton of electricaltape around it or something. But like I said, it doesn't leak a drop so I'm not worried about it at this point.
Well, that's pretty much what I did. The small section of hose I added makes the Gates hose a snug fit
Old 08-04-2010, 06:21 PM
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Re: Gates p/n: 21505 hose issues

Not sure if I just got a freak hose or what, but I didnt have to clamp the crap out of it at all. Wasnt even loose on the waterneck
Old 08-04-2010, 09:18 PM
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Re: Gates p/n: 21505 hose issues

Originally Posted by Pocket
Not sure if I just got a freak hose or what, but I didnt have to clamp the crap out of it at all. Wasnt even loose on the waterneck
Same here. I think it all depends on how you trim it.
Old 08-05-2010, 02:27 PM
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Re: Gates p/n: 21505 hose issues

Originally Posted by 3.1EyeCandy
Same here. I think it all depends on how you trim it.
Mine seemed to be the same diameter throughout after the reduction part was snipped off. Maybe they we got a defective batch lol.
Old 08-05-2010, 02:36 PM
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Re: Gates p/n: 21505 hose issues

Maybe one of you guys with the lucky hoses can buy one at your own local parts store, trim it, and ship it to me. I'll pay you for it of course.

I actually have bought two of these things, the first one I returned when I got it to the garage and noticed how big it was, and I bought the 4.3L Vortec hose instead, then I decided what the heck I'll give it a try, and bought a second 21505 hose and it's exactly the same as the first one, both came from my local Napa store.
Old 08-05-2010, 05:23 PM
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Re: Gates p/n: 21505 hose issues

Got mine from advance auto, asked for a 90 F250 7.5L diesel lower. Maybe Gates is a different company than the one we got
Old 08-05-2010, 08:50 PM
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Re: Gates p/n: 21505 hose issues

Originally Posted by Pocket
Got mine from advance auto, asked for a 90 F250 7.5L diesel lower. Maybe Gates is a different company than the one we got
Very odd. I'll have to check the R&S Strauss near me for giggles.

I'm getting close to filling the car up with fluids and cranking it over for the first time. The suspense is killing me!
Old 08-05-2010, 08:53 PM
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Re: Gates p/n: 21505 hose issues

Originally Posted by BlueZee28
Maybe one of you guys with the lucky hoses can buy one at your own local parts store, trim it, and ship it to me. I'll pay you for it of course.

I actually have bought two of these things, the first one I returned when I got it to the garage and noticed how big it was, and I bought the 4.3L Vortec hose instead, then I decided what the heck I'll give it a try, and bought a second 21505 hose and it's exactly the same as the first one, both came from my local Napa store.
I may just do that. Mine is disconnected right now anyway - would be a good time to cut one just like it. Might be a couple weeks before I get to it though
Old 08-05-2010, 10:51 PM
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Re: Gates p/n: 21505 hose issues

I'm going to ask a quick question as your all about hoses right now...everyone agrees on the 95 3.4L upper hose correct?
Old 08-05-2010, 11:23 PM
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Re: Gates p/n: 21505 hose issues

My upper hose is whatever one was suggeted in the same thread as the 21505 lower hose. I actually think it's for an early 4th gen V6 car. I just flipped it around backwards and trimmed it a litle.
Old 08-06-2010, 05:01 AM
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Re: Gates p/n: 21505 hose issues

I did see this: 21505 Molded Coolant Hose; 1 3/4" x 2" x 22 11/16" What is the dia of the radiator/wp fitting?

Maybe you guys that are having it fit correctly are getting a horrible Chinese knock off that has fitment issues which work in our favor
Old 08-06-2010, 08:23 AM
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Re: Gates p/n: 21505 hose issues

Lower has 1.75" on both the rad and WP

I think ours was the cheap version of 1.75" hose that was formed and then flared right at the WP to 2". Cut the flare off and it's back to being 1.75" the whole way
Old 08-06-2010, 02:35 PM
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Re: Gates p/n: 21505 hose issues

I just clamped mine down good and have been beating it to 7100 RPM like nobodys business.
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