Original CAC hose finally bit it...

dgeist · **Posted:** Tue Aug 18, 2009 12:53 pm

So, I'm driving home yesterday and about 100 feet out of the parking lot, I hear a loud pop, then a woosh of air from the left side of the engine bay. I let off the pedal, and it stopped, pressed again and it came back. I knew instantly that I'd lost a CAC hose. I located the split this morning (bottom side about 2 inches upstream of the clamp at the FCV on the engine side hose, just below the battery positive terminal). I've had a pro-vent on the job for about 75% of the 42k that's currently on the clock, but that is apparently not good enough

I know some folks have reported that the newer replacement factory hoses are similar to aftermarket in being made of a more oil-resistant material. Anyone have that part number handy and/or know about how much they cost? Are the silicone hoses worth the expense when compared to the improved factory ones? I'm looking for opinions to help me decide what to do while my duct-tape repair holds (and it's starting to leak already).

Dan

yakers · **Posted:** Tue Aug 18, 2009 4:27 pm

Silicone ones are good by me. They are not cheap but are likely to last a long time and there is the reliability issue, don't want a hose going when I am off road or in remote places. And, they look way better.

dgeist · **Posted:** Tue Aug 18, 2009 4:28 pm

After a little research, 98 bucks for the OEM overnighted to me vs $268 for a samco kit (without new clamps) seems like a no-brainer, especially since I'm currently leaking boost. Unless someone's selling a Samco kit for cheap?

I suppose if I didn't have about 10 things that I need to spend money on before this, then the Samco ones would be a easier choice. The delay is a big factor, too.

bdptp73 · **Posted:** Tue Aug 18, 2009 5:24 pm

I don't remember who it was but someone on here had a samco hose blow out on them. For the money I would stick with the factory hose(s).

nursecosmo · **Posted:** Tue Aug 18, 2009 8:21 pm

My hot side factory hose was replaced at 20k because of severe oil sweating. The replacement OE hose has 60k miles on it and had not sweat a drop of oil. My original cold side hose blew out about three months ago, and the OE replacement looks much higher quality. It has not leaked any oil either. I haven't heard of any replacement hoses blowing out yet, but perhaps someone else has?

Glend · **Posted:** Tue Aug 18, 2009 9:01 pm

Yeah the new VM engines are equipped with what appear to be silicon hoses. I had a look at a KK CRD last week and it had the very nice looking (and big diametre) silicon appearing hoses. My son's Wrangler Unlimited CRD also has the newer style hoses. The probelm for KJ guys is that the hose shapes in these vehicles are different so you probably couldn't use them. Nice to know they have probably fixed that at last on the newer installations.

dgeist · **Posted:** Fri Aug 21, 2009 10:31 pm

So, I ordered a replacement engine side hose from our favorite online dealer in oregon. With overnight shipping, it was still cheaper by 30 bucks and arrived sooner than my local dealer could have gotten it. The "delivered right to my door by fedex" doesn't hurt either.

I found out two things when I replaced the old with new:
1) duct tape melts into a goey mess when subjected to the temperatures of the engine bay near the intake manifold
2) the new hose was identical but felt much more rigid (like night and day) compared to the original. I was amazed that the boost actually felt a little more responsive. I guess the heat and oil make everything goey.

Dan

widowmaker · **Posted:** Sat Aug 22, 2009 4:38 am

I'm afraid to say anything, but I'm still running my original hoses at 120,000 miles. I'm wondering if having a lot of highway miles keeps them dried out better. I've got a roll of gorilla tape for insurance and I will prolly order replacements today, since I posted this.

edit - I just ordered the Samco's

BlackLibertyCRD · **Posted:** Sat Aug 22, 2009 10:56 am

I have the Samco installed and noticed that they expand when revving the engine. You have to be sure they don't touch anything under expansion or you can get a blow out. I also believe that the expanding Samco cause more turbo lag off the line. I have my old hoses and want to work with a local shop in WA to bend stainless steel and get flex connectors for the ends. The advantage would be not to cause more turbo lag and no chance of blow out, the disadvantage would be cost of the flex connectors and clamps. I thought someone was working on this but haven't heard final results yet.

Groo2 · **Posted:** Sat Aug 22, 2009 11:17 am

I just replaced my CAC hose this past april, the dealer wanted ~ 300 for a set of hoses. You might as well go with the samco hoses and get a superior product for that price. In the mean time, while you wait for four samco hoses to come in (took mine six weeks) just use some 100mph tape to "patch" the ruptured hose. I was a spaz and bought a set of OEM hoses too (waste of 300 dollars). So now my samco hoses lie in wait for installation when this next set of OEM's fail.

Rich · **Posted:** Sat Aug 22, 2009 12:01 pm

BlackLibertyCRD wrote:

I have the Samco installed and noticed that they expand when revving the engine. You have to be sure they don't touch anything under expansion or you can get a blow out. I also believe that the expanding Samco cause more turbo lag off the line. I have my old hoses and want to work with a local shop in WA to bend stainless steel and get flex connectors for the ends. The advantage would be not to cause more turbo lag and no chance of blow out, the disadvantage would be cost of the flex connectors and clamps. I thought someone was working on this but haven't heard final results yet.

Just make sure your flex is bubbled in the middle. Standard couplers don't do well during engine movement.

canlib · **Posted:** Sat Aug 22, 2009 12:41 pm

BlackLibertyCRD wrote:

I have the Samco installed and noticed that they expand when revving the engine. You have to be sure they don't touch anything under expansion or you can get a blow out. I also believe that the expanding Samco cause more turbo lag off the line. I have my old hoses and want to work with a local shop in WA to bend stainless steel and get flex connectors for the ends. The advantage would be not to cause more turbo lag and no chance of blow out, the disadvantage would be cost of the flex connectors and clamps. I thought someone was working on this but haven't heard final results yet.

I'm glad someone is still chasing stainless hoses. I put the idea on the back burner after my previous post (search by author to view) but if it works, this looks like the best long term solution. Let us know how this works out Black.

BlackLibertyCRD · **Posted:** Sat Aug 22, 2009 1:47 pm

Rich wrote:

Just make sure your flex is bubbled in the middle. Standard couplers don't do well during engine movement.

Yes sir Rich, that's what make it a flex connector. On the larger diesel diesel I work on in the county garage there are two or three bumps separated with wire on the outside.

BlackLibertyCRD · **Posted:** Sat Aug 22, 2009 2:08 pm

canlib wrote:

I'm glad someone is still chasing stainless hoses. I put the idea on the back burner after my previous post (search by author to view) but if it works, this looks like the best long term solution. Let us know how this works out Black.

Here is the link from last one working on it.

http://www.lostjeeps.com/forum/phpBB3/vie ... er&start=0

I sold my house in Delaware, will be retire in October and move to my WA home if nothing goes wrong. New garage has to be finish, still need electric, water, lift, compressor and heat. Then this will be one of several project I will be working on.

Rich · **Posted:** Sat Aug 22, 2009 2:09 pm

Good, I am glad to see someone knows what they are doing. You would be amazed how many people in the automotive world thank that because silicone is flexible, it must be a flex coupler. :roll:

canlib · **Posted:** Sat Aug 22, 2009 8:37 pm

BlackLibertyCRD wrote:

canlib wrote:

I'm glad someone is still chasing stainless hoses. I put the idea on the back burner after my previous post (search by author to view) but if it works, this looks like the best long term solution. Let us know how this works out Black.

Here is the link from last one working on it.

http://www.lostjeeps.com/forum/phpBB3/vie ... er&start=0

I sold my house in Delaware, will be retire in October and move to my WA home if nothing goes wrong. New garage has to be finish, still need electric, water, lift, compressor and heat. Then this will be one of several project I will be working on.

This is a later thread http://www.lostjeeps.com/forum/phpBB3/vie ... highlight=

Original CAC hose finally bit it...

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