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Yes,1/4-20 is the thread size on Shamrock.  Length varied 1 3/4, 2 and some longer.
Jim

in case anyone's interested now (or in the future).  out came the port head wall today...  came out rather easy.  i did have saw the door frame where it splines into the titled section at the top.  that sucks, but at least it was only one straight cut, so i should be able to fix it

can anyone confirm that the stanchion bolt size is 1/4"-20.  i took the stanchion and backing plates down to the marina today.  forget to measure the bolt hole size before i came home and left the stanchion down there.  so now i have no idea what to order this week for next weekend, ugh...

Last year I changed over from the v belt on our M35AC to the Balmar serpentine belt.   The left over parts from the change over are: v-belt in great condition Gates 7417),  Balmar machined v-groove pulley (61-0010), raw water pump pulley, left over Balmar spacer and assorted screws.   The v-groove pulley came off of a Balmar 120 amp 6 series alternator.   These are spare parts in a box in my garage that I do not want to toss knowing that someone among us can likely use at least part of this set of junk parts. 

Any takers? For the cost of shipping plus a six pack?

I just listed mine on here. I have a 1988 34 for sale in Missouri. She is loaded and turn key ready to go.

https://www.sailboatlistings.com/view/76256

I am selling Pretty Lady. She is a 1988 Catalina 34. Not sure if she is a TR. The spinnaker bag says TR. I have not measured. She is turn key ready. All I need to do is put the water source hose on the head and a sanitation hose (I had a compost in it when I lived on it). All original head fixtures put back in. Below are the links to sailboatlistings and my YouTube video of her.

She has been a great boat. Fast and fun to sail! I moved up to a 37 foot for more space to live on. Located at Orleans Trail Marina at Stockon Lake in Missouri. Slip paid up until August 2019.

Asking $42,500 obo

https://www.youtube.com/watch?v=h7jP4KUIziA&t=1s

https://www.sailboatlistings.com/view/76256

If you are a boat owner in need of a dive service or a hull cleaner looking for new clients, I have created a Facebook group designed to put the two of you together. A bulletin board where boaters can post "help wanted" ads and divers can advertise their businesses. Hundreds of hull cleaners are already members and are waiting to provide you with great underwater services!

https://www.facebook.com/groups/1152289711611226

Great information Ken. Thanks. I definitely see the voltmeter as the gauge to sacrifice in favour of an oil pressure gauge. There’s merit to moving the fuel gauge since it isn’t something you need to refer to every few minutes but i want to retain it and don’t want to relocate it below decks. I count on my battery monitor and solar panel meter below decks to give me accurate house battery voltage and don’t need the cockpit gauge. Looks like a good off season project for this winter.

Dave

Eazy-peazy for you.
I did it on my m25 and did it on an XPB, and on two XPs (used Wb parts to relocate the oil switch off the block.)  Not quite as E-P.

The tee is indeed NPT (the hose is 1/8”-28 JIS x 1/8”-27 NPT.)  It’s there cuz Westerbeke/Universal panels have OP.  Catalina - Why would anyone want to know that? 

A Sierra or any OP sender using the Stewart Warner 80psi convention works.  I used a BWD S768 sender from O’Reilly $17 lifetime warranty on mine; on the others Faria gauges/senders.

Some relocate their hourmeter (if it’s separate) or the fuel gauge ( some builders put the fuel gauge at the nav.)

Good observation Ken. Yes, the tabs are bent. I suspect from some previous manipulation although possibly due to stiff wire. At some point, I’d like to revisit that area and add a pressure sender and replace the voltmeter at the instrument panel with an oil pressure gauge. Has anyone done this?  What kind of thread on the sender will I need?  Is it a simple 1/8”NPT or something more exotic?