hose replacement - guidance please

[holtcl]

Looking at replacing the hoses on both main engines (871 N) this winter. Any words of wisdom? I am thinking that some of them are going to be buggers, particularly the shorter lengths, and figure that a heat gun would help.

Other thoughts, helpful hints, words of wisdom?

I did check out a previous thread here entitled "short hose replacement" and that was a helpful start.

Thanks,

Cheryl
Cinderella
1971 53 MY

 

[SKYCHENEY]

To change some of the short hoses, other parts need to be removed. So, while you're at it, change the thermostats as well.

 

[dsharp]

Work a screwdriver around the hose to unstick it from the metal then pry the hose away from the fitting a shoot a little wd40 in the space. A little go-Jo or liquid soap will help the hose go on. A heat gun may work but they melt everything in their path and you have to pay attention where you lay it down. Snap on makes a tool like a bent pick that works very well for removing hoses.

 

[SeaEric]

Hi Cheryl, It's a pretty big job. I had Tom Hug (MR Power) replace all the hoses on both of my 8v53's when I bought my 41 TC in 2011. This included one new heat exchanger core and a thorough cooling system re-do (impellers, t-stats etc). Materials and labor was + or - $6,500. I would never have attempted this project myself.

 

[Timeout]

I did mine myself over two winters as they had the original hoses on 1978 671N's. One engine each winter. Work included:

New silicon water hoses with new bellville clamps
New oil lines with new connectors
New fuel lines with new connectors
Themostats
New fresh water pumps
Clean heat exchangers with new gaskets and bolts
New block heaters
Paint engines while everything was apart (brushed Rustoleum Professional)
New large capacity coolant recovery tanks
New airbox hoses
New oil change hoses
New valve cover gaskets
New zincs
Rewrapped all wiring harnesses with silicon tape

Everything came apart very easily except broke a couple of bolts at bottom of heat exchangers. Once casting was off, the remaining parts of bolts came out easily with a little PB Blaster. I made up all of the hoses myself including connectors except for one s shaped water hose that I purchased from J&T. Cost after much internet shopping was about $1000 - $1100 per engine plus some bruised knuckles and ribs. Learned a lot about the engines in the process so it was worth it for me to do this myself. I can provide sources for parts next week if you would like.

 

[rwappleton]

Kevin,

please post the source list! I have same hull / engine combination and I am going to start in a month!

Thanks,

Russ Appleton
79 43DC#511

 

[Timeout]

Attached source list and picture.

 

[rwappleton]

Great Job...........I love a nice clean engine room!

 

[holtcl]

In light of the (impressive) itemized list in the previous post, let me clarify my proposed "scope of work" at this time only includes the hoses in the fresh water system. Is that a reasonable place to start?

Eric, I reflected on your remarks after reading them last night. Given this clarification on scope of work, I couldn't see how this work could cost in the 6k range- I did see that you listed some additional items. I had my heat exchangers serviced 2 years ago.

Thoughts? Manageable? I did do some poking around the ER last night and I agree some of the hoses are going to be challenging. Thought about just waiting until next time heat exchanger needs servicing.

Cheryl
Cinderella
1971 53 MY

 

[SeaEric]

C, The new HE core part was around $1K alone. This bill also included new trans oil lines and adding coolant recovery bottles as I didn't have those. My engines are 8's not 6's. When I'm back in town, I'll pull the invoices and share them with you.

 

[Timeout]

Great Job...........I love a nice clean engine room!

Russ,

You'll still need to validate the list as there could be variability in water pump (there is a left and right hand version) valve cover gasket (different if cast vs. stamped cover), etc. The exhaust manifold gasket wasn't for the whole manifold, it is the football shaped one that connects the pipe to the 1" water hose that passes under/behind the heat exchanger. Also it seems that the same fittings are not always used but the aeroquip.cc online data is pretty good. Difficult at times to determine 37 degree vs. 45 degree fittings.

Good luck...

 

[rwappleton]

Thanks so much Kevin.....this is a great start no huge start

Russ

 

[holtcl]

Thanks Eric, that will be helpful in trying to weigh the pros/cons of doing the job myself. Hope you're someplace lovely and warm!

Cheryl
Cinderella
1971 53 MY

 

[holtcl]

Does anyone have the name/info on the blue silicone hose? Trying to source it on the internet.

Also, can anyone confirm the temperature on the thermostats- found one that is 170 degrees through Diesel Pro, and wanted to make sure they would be correct.

Thanks,
Cheryl
Cinderella 1971 53 MY

 

[Boatsb]

Is there no places to buy boat stuff near you? Buying on the internet is not only time consuming and requires shipping but usually comes with no support or advice. If you are an expert than maybe thats a way to save a few dollars but the idea of going to the local guys and getting what is needed off the shelf and finishing the job that day.

I have 3 or 4 local companies we buy from all the time. I can always get things cheaper online but not right away and time is money. Id rather pay a bit more for service.

 

[SKYCHENEY]

170 thermostats is correct.

 

[SeaEric]

Cheryl, Check with JG Parks right down the road in Grasonville. They're very helpful. They even stock the old antique sock style fuel filters I use on my 8v53's. Nice folks too.

 

[holtcl]

Thanks- I typically go to Parks (where I also get the sock filters- also available at Western Auto). Was thinking if I got the right info I could save a few bucks ordering online. Thankfully between Parks and Western Auto I am able to find both great support and the parts I need.

Cheryl
Cinderella1971 53 MY

 

[saltshaker]

Try http://www.maesco.com/index.shtml They are in NJ and offer great service. If you don't use them for the colling hose, they're a great source for filters and other engine maintenance items