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  Best location for Water Pressure tap? (Rage)

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Author Topic:   Best location for Water Pressure tap? (Rage)
Raging14 posted 07-27-2004 04:01 PM ET (US)   Profile for Raging14   Send Email to Raging14  
Hi all!
I have a question for the Rage owners out there. Traditionalists, please don't try to talk me out of my boat, I knew exactly what I was buying.

I'm installing a 30 psi water pressure gauge to alert me to a loss of cooling water pressure due to intake blockage or strainer plugging. Has anyone done this on their Rage with the 115 hp OMC motor? If so, where did you tap into the cooling water circuit? Any help will be appreciated.

Thanks,
Paul Carlson
1994 Rage 14

where2 posted 08-23-2004 12:09 AM ET (US)     Profile for where2  Send Email to where2     
Sometime this week after I complete the acquisition of mine, I will DEFINITELY be looking into this modification! In reading what I could about the cooling flushing hookups, it appears that there should be a cooling hose that can be tied into to provide cooling water pressure status.

Get with me next weekend, if nothing else turns up. At the moment, I don't even have the boat yet...

gimcrack225 posted 08-23-2004 12:47 PM ET (US)     Profile for gimcrack225    
Having a water pressure gauge is a good precaution on any motor.

I'm installing a water pressure gauge on my 1993 Johnson 225hp. The instructions are confusing as they try to cover every motor. The key is figuring out which instructions apply to your individual motor. I'm not an expert by any means but with the help of my dealer I got the answer.

Ultimately the location (for my Looper V-6 1993) as recommended in the instructions and seconded by my dealer, is a elbow coming off the exhaust water jacket.

On three cylinder engines, instructions say cut overboard indicator hose approximately 4" above outlet nipple.

On earlier Loop scavenged V-4 etc motors OMC recommends the connection in the water control valve pressure hose. Since 1993 ended the use of this valve, at least in the 225hp, OMC preinstalled a capped elbow on the water jacket on the port side down low a couple inches above the bottom of the lower cowl.
Good luck
Karl

where2 posted 08-25-2004 11:55 PM ET (US)     Profile for where2  Send Email to where2     
Tuna1 had this to say in the general forum regarding the water pressure tap: "The best place for a water presure gauge is to tee it into one of the elbows at the top of the cylinder heads where the water exits and go to the exhaust chamber." You might wish to Email him for clarification.

I still haven't climbed that far down in my engine compartment since I bought my Rage yesterday. However, I suspect he is talking about the hose that comes off the elbow and goes into a T-fitting and then dumps into the muffler.

If I didn't have plans with the family on Saturday, I'd be into this task then...

tuna1 posted 08-27-2004 09:56 PM ET (US)     Profile for tuna1  Send Email to tuna1     
YES,you are correct.
Fishingpool posted 08-31-2004 01:52 PM ET (US)     Profile for Fishingpool  Send Email to Fishingpool     
What is the best way to flush or test run the jet drive? Is there an adaptor? Where can I get one?
Fishingpool posted 08-31-2004 01:52 PM ET (US)     Profile for Fishingpool  Send Email to Fishingpool     
What is the best way to flush or test run the jet drive? Is there an adaptor? Where can I get one?
Fishingpool posted 08-31-2004 01:52 PM ET (US)     Profile for Fishingpool  Send Email to Fishingpool     
What is the best way to flush or test run the jet drive? Is there an adaptor? Where can I get one?
Fishingpool posted 08-31-2004 01:52 PM ET (US)     Profile for Fishingpool  Send Email to Fishingpool     
What is the best way to flush or test run the jet drive? Is there an adaptor? Where can I get one?
tuna1 posted 09-01-2004 09:37 AM ET (US)     Profile for tuna1  Send Email to tuna1     
It depends on the make and model.What is the one in question?
where2 posted 09-15-2004 09:29 PM ET (US)     Profile for where2  Send Email to where2     
My Rage came with an OMC flushing adaptor, designed to plug into the engine after slipping the impeller housing back about 2". It's simply a 90 degree snout with O-rings that forces garden hose water up the cooling system in the same manner that running the pump submerged in water does.

Someone pointed out that the shaft seals may not have adequate cooling so you don't want to necessarily run forever usingthis method. However, you need not actually run the engine to flush it using this part. Check with an OMC dealer for part #437021 Flushing Kit. (That part # is hand written on a set of instructions faxed from OMC's Tech Team, which came with my Rage)

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