1977 Evinrude water psi gauge

[csmithrc]

Hi all. Can anyone tell me where the best place to hook up the pressure gauge on a 1977 140 hp evinrude. Thanks

 

[corm]

Re: 1977 Evinrude water psi gauge

Most of them tee into the water tell tale hose.<br /><br />corm

 

[csmithrc]

Re: 1977 Evinrude water psi gauge

I know where the 2 exhaust relief holes are but i don't know about tell tell holes.It does have the two hoses at the thermostat.I was told by one shop to drill a hole in the top of the engine into the water jacket but this seems to risky to try on my own.

 

[csmithrc]

Re: 1977 Evinrude water psi gauge

Was just told by a local shop that this engine does not have a tell tell hose and they could not even tell me where to put in the tap for psi gauge.It does have a water passage plate at the top of the engine, wondered if that would be a good place to tap into.Thanks to anyone with any info

 

[Dhadley]

Re: 1977 Evinrude water psi gauge

Look on the water jacket plate (big bubble on rear of powerhead). Sometimes there was a boss where the fitting was later placed for the overboard indicator. Put your fitting there. The top plate will give you a false (low) reading.<br /><br />Good luck!

 

[csmithrc]

Re: 1977 Evinrude water psi gauge

Thanks Dhadley will give it a try.

 

[csmithrc]

Re: 1977 Evinrude water psi gauge

Still have not found a fitting to hook up gauge to.Was told i could use the thermostat housing to tap into,I replaced the thermostats on this engine 2 months ago and it was a big pain to do this with engine all together.Anyone have any more ideas. Thanks

 

[Dhadley]

Re: 1977 Evinrude water psi gauge

The correct place is the water cover on the exhaust bubble. Drill and tap and install your fitting there. Install a fitting number 321886. Run a hose from that thru the pan to create your overboard indicator. Your water pressure line will then T into that line. That T will be in the pressure gauge kit.<br /><br />Good luck!

 

[csmithrc]

Re: 1977 Evinrude water psi gauge

If i can bother you one more time Dhadley, should i remove the cover or can i just drill and tap it. Thanks

 

[Dhadley]

Re: 1977 Evinrude water psi gauge

You can do it with it on, no problem. The plate isn't very thick so it won't take much. A right angle drill may be of some help. <br /><br />Good luck!