98 V70 T5 Replacing the Coolant Hoses in Pics

[cn90]

The idea of "rebuilding the heater hoses" has been discussed before. See posts by jdlc in the thread below. Note that it was for NA (Non-Turbo) setup but the idea is the same:

http://volvospeed.com/vs_forum/topic/12 ... -firewall/

[j-dawg]

Interesting that this subject comes up now! I've bypassed the heater hose junction box at the firewall, and the hoses from the block to that junction need replacement.

I've been debating purchase of a tubing bender, beading tool, and some tubing to build hard lines for the purpose. It's not really a better solution, but it could be a fun project. The cost ends up about the same as OEM hose, but I get to keep the tools afterwards, or I could sell them off. I'd get two short sections of pipe that look cool, which counts for something. I also wouldn't have to spend $100+ for two hoses, which hurts emotionally as much as financially.

But this hard line would still need to be hooked up to the engine and heater hoses. I'd end up with eight hose clamps for the entire heater core system, hardly a model of reliability (though I note that the original setup contains the same number of connections, using o-rings at the junction box rather than hose clamps). On top of that, I get to be the guinea pig for whatever's going to go wrong with this setup, rather than getting the benefit of however many billions of kronor Volvo dropped on 850 development.

I can see it being a cool project if I use ssilicone hose and Oetiker clamps at the engine block, so I wouldn't have to mess with them again. But it's winter, I have to make a long drive soon, and I have only one car at the moment, so maybe I shouldn't experiment.

[j-dawg]

Interesting that this subject comes up now! I've bypassed the heater hose junction box at the firewall, and the hoses from the block to that junction need replacement.

I should clarify: attached is the corner I'm talking about. Sharp corner, rubbing against gutted coupler. A similar thing, less severe, occurs at the other end. A rigid line could be bent to prevent contact with other things in the engine bay.

The simplest solution, and what I'll probably go with for now, is to use a barbed 90-degree hose elbow at the firewall. This will relieve contact in the location that most troubles me, and it should be quite reliable. But when life throws me opportunities to buy fun tools, I can't resist.

[songzunhuang]

I also use any opportunity to buy fun tools. I've got a chest full of them in the garage. Do you also have the issue that the fun tool you bought is used for one project and then never heard from again? I once bought a cordless nail gun for $400. It was fun when I was doing my window trim around the house, but then it sat in the garage for 5 years. I ended up selling it and getting $150. I think I've got a special drywall screw gun the the garage somewhere too...

Anyway, that's a bit of a tangent. I have already ordered all the correct hoses. The original setup lasted me 17 years so it must be an ok design.

[songzunhuang]

Give this Volvo dealer site a try next time. You can always call and make sure they have the correct parts for you.

Jim Ellis Volvo
E-mail Us: [email protected]
Phone No: (888) 740-5963

Thanks for the tip. I am normally loyal to my local Volvo dealer, but the last few times I went for service they charged me way too much for parts. I'm beginning to shop around more. I'll keep Jim Ellis in mind for the timing belt kit. I know that's coming next...

[Ben850]

Here is the thread on the e-bay heater core, which is working fine for me.
I hadn't even washed it, and the slight smell went away after about three weeks.

https://www.matthewsvolvosite.com/forums ... =1&t=67001

My heater hose broke at the same place, luckily a half mile from home. I had just returned from a 950 mile trip.
I had never noticed that bulge when I was doing all the silicone originally, or I would have taken care of it then.
Mine didn't fail like yours. It Blew.

A little boost pulling out of my local gas station is all it took.

See the end of this page on this thread.

https://www.matthewsvolvosite.com/forums ... 0&start=42

[cn90]

@songzunhuang,

Rebuilding using generic hoses is so cheap and bullet-proof.
You get to keep the 90-degree elbow from the old stock hoses.
In fact, this is what I plan to do next Spring as preventive maintenance and will certainly do a write-up at that time...Spring of 2015.

Save money for Sushi and Sake hehe...

[Ben850]

@songzunhuang,

Rebuilding using generic hoses is so cheap and bullet-proof.
You get to keep the 90-degree elbow from the old stock hoses.
In fact, this is what I plan to do next Spring as preventive maintenance and will certainly do a write-up at that time...Spring of 2015.

Save money for Sushi and Sake hehe...

Now that I know more about it, I agree.

I saved the old elbow pieces and even grabbed a few from the junkyard.

[cn90]

Hey Ben,

READ your entire project below, VERY INSPIRING!!! It takes time, will power, some money and determination and skills to do something like that. Very much like buying a beater home and rebuild it from scratch.

https://www.matthewsvolvosite.com/forums ... 0&start=42

[Ben850]

Hey Ben,

READ your entire project below, VERY INSPIRING!!! It takes time, will power, some money and determination and skills to do something like that. Very much like buying a beater home and rebuild it from scratch.

https://www.matthewsvolvosite.com/forums ... 0&start=42

All my Volvos fit that category. They had one foot in the grave.

These are the other two beaters and I may have a new one on the way.

The '93 was my introduction and I had to rebuild it twice. Once after a crash.

https://www.matthewsvolvosite.com/forums ... 35&t=47157

The work in progress was also in an identical crash. A T-5R I thought worth saving.

https://www.matthewsvolvosite.com/forums ... 35&t=64168

The '93 had me hooked.