Have a BBC with a water pressure regulator.  I want to install a pressure gauge and was told to install it on the block somewhere.  Is this a good location?  It would be where the plug with the hex head is.  Are there better places?

I see nothing wrong with that location, with one small exception..... It's ugly. Why not install it in one of the 1/4" pipe holes on the bottom of the block?, it would be invisible.. 

Yeah the thought of that guage sitting there didn't sit real well with me either.  I'll look for one of those pipe holes.  Are you talking about just putting it right in one of those holes without tubing.  If so, I'm assuming this isn't a guage you look at a whole lot.  Do you just use it to set the pressure relief valve and then not bother looking at it very often?  I really don't know, I'm new to jets.

I never, never, never ever put a gauge directly on the engine... They don't hold up well to the vibrations, especially a bourdon tube gauge.

Install a remote gauge and use nylon tubing much the same way you would install a mechanical oil pressure gauge.

GT

Never had an issue with looks or vibrations. Also helps when you Mother In Law works for Ashcroft who makes gauges for Navy ships as well as subs for US military.

Ashcroft makes nice stuff.

The little (I assume fuel pressure gauge) is fluid filled and is not mounted to the block.

Also, your stuff seems to be the exception to virtually every rule.

You have to be really careful with Bourdon tube gauges, tough is one thing they are not.

Back in the racing days (extreme example I know) one of the guys put a mechanical oil pressure gauge on the back of the engine for testing,I hated it, well it blew apart and squirted all the oil out if the engine before anyone caught it, danged the crank and made a ginormous mess.

If you have ever taken a pressure gauge apart, you will immediately understand. Temperature gauges at a different story.

Glycerin filled is the only way.

GT

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It is actually in the t stat housing.

So do you have a regulator with built in relief off the pump. 
Are you looking for the pressure of water going into your block? does the water flow to the block then out the Thermostat??? Is there a Thermostat or are you controlling flow from a gate valve
 

I set mine [Regulator with built in Relief] with the garden hose to relieve then placed it in the boat.

Yes my regulator is right off the pump and the water does flow through the block and out the thermostat housing.  My regulator does have a relief that goes overboard through the transom. 
I'm still trying to screw my head on straight after reading the exchange between you and GT Jet on the other water regulator thread.  I need to set aside an hour or two and reread it. 
Anyway, I will keep in mind the garden hose option.  Thanks for sharing.  Didn't think of that one. 

I promise not to start that sh!t again... 

If I may. Why do you want a gauge? Do you run headers? is your dump line visible from the drivers seat?

Have you thought about one of these?   http://www.basspro.com/Teleflex-Marine-Eclipse-Series-2-Water-Pressure-Gauge/product/10200206/

No problem, for the most part I thought it was a healthy debate.  By the way, I just posted a reply on that thread.  Check it out.  I didn't want to jack my own thread. 
Anyway, yes I do have water cooled headers and no the dump is not visible from the drivers seat.  I just thought a guage would provide useful information.  I don't have a clue what my water pressure is and I don't want to blow a head gasket.  I don't know, do I really need one. 

No problem, for the most part I thought it was a healthy debate.  By the way, I just posted a reply on that thread.  Check it out.  I didn't want to jack my own thread. 
Anyway, yes I do have water cooled headers and no the dump is not visible from the drivers seat.  I just thought a guage would provide useful information.  I don't have a clue what my water pressure is and I don't want to blow a head gasket.  I don't know, do I really need one.

IMHO    no

Ever heard of a Pete's plug?

Pretty slick little device that works like a basketball fill port... You can attach a gauge to an adapter and spot check it...

GT

I just Googled it.  Interesting.  I could probably put one on the plug on the T-stat housing I originally considered.

Yeah, you could, they're not too bad looking either.

I use these on a daily basis... What size do you need? I will drop one in the mail. I think the adapters are pretty cheap. Then you could use just a regular old POS gauge.

GT

Google Jim Coffey he has jet boat cooling info on his site.  He builds pumps and performance engines.  He use to work for Berkeley and he built race cars.  Maybe if u don't take my opinion u can soak in his info. 

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