Pet Cock Valves For Engine Block
Printed From: CorrectCraftFan.com
Category: General Correct Craft Discussion
Forum Name: General Discussion
Forum Discription: Anything Correct Craft
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=8845
Printed Date: November-15-2024 at 11:53pm
Topic: Pet Cock Valves For Engine Block
Posted By: Buckeye1nc
Subject: Pet Cock Valves For Engine Block
Date Posted: October-29-2007 at 9:18am
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Good morning. Wondered if any of you fine folks might provide a source for pet cock valves. I would like to replace the water drain plug on the engine block of my SN 196 with a pet cock valve for easy draining after those winter sets. Thanks for your help. ------------- John |
Replies:
Posted By: eric lavine
Date Posted: October-29-2007 at 9:26am
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you can buy them at Napa ------------- "the things you own will start to own you" |
Posted By: GottaSki
Date Posted: October-29-2007 at 9:39am
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Beware they tend to clog with scale anyway. ------------- "There is nothing, absolutely nothing, half so much worthwhile as messing around with boats...simply messing." River Rat to Mole |
Posted By: 8122pbrainard
Date Posted: October-29-2007 at 9:50am
Do not use the cheaper ones that you typically find on the bottom of a radiator. These are a heavy duty type that I have put on all my boats. The center (stem) is compleatly removeable so you can probe with a wire for blockage.
You can find them at mcmaster carr. Put # 4921k2 in their search and the 1/4" npt will come up. http://www.mcmaster.com - mcmaster carr Merc uses them on some of their inboards and I/O's ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: gn6027
Date Posted: October-29-2007 at 9:56am
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I used some small 1/4 turn ball valves. Similar to McMaster #47865K41.
I hook up a barbed hose fitting and a piece of hose to drain the block into the bilge area. I can also drain the anti-freeze back into bottles for proper disposal in the spring. ------------- GN6027 http://www.correctcraftfan.com/diaries/details.asp?ID=2562 - 1987 Ski Nautique 2001 |
Posted By: eric lavine
Date Posted: October-29-2007 at 11:06am
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some of the newer boats have ball valves going to a central location making it real easy to drain the block, Napa does carry the higher quality pet cocks as Pete described, you have to specify that to the unlazy guy at the counter and have him look in the catalogs ------------- "the things you own will start to own you" |
Posted By: 8122pbrainard
Date Posted: October-29-2007 at 11:26am
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If my memory is correct, the last one I did on my 77 PCM needed 4 - 1/4" (2 for the block and 2 for the manifolds) and a 5th 1/8" for the J pipe on the bottom of the circ pump. Don't forget about the oil cooler. I still pull the hose off it. My 64's cooler self drains. Is your boat equiped with a raw water strainer? The bowl will need to be unscrewed if it has one. ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: Hollywood
Date Posted: October-29-2007 at 11:51am
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Pete, do you have log style manifolds? The PCM pyramid plug is sigificantly larger than the block plugs. ------------- |
Posted By: 8122pbrainard
Date Posted: October-29-2007 at 12:01pm
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HW, Yes I have logs but the drains that Eric and I have decribed do come in 3/8" pipe too. Beyond that (1/2"?) a reducing bushing whould be required.
Anyone planing this should check their pipe sizes!! ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: TRBenj
Date Posted: October-29-2007 at 12:01pm
Pete, this is your motor, correct? If so, I dont think its a PCM. Ive heard that Escort was the predecessor to Commander. Both of my PCM's ('78 and '90) have the same exhaust and cooling systems, and they dont look like this.  ------------- |
Hollywood wrote:Posted By: 8122pbrainard
Date Posted: October-29-2007 at 12:09pm
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Tim, Yes, It has "pleasure craft marine" Right on the ID tag with their numbering system. Was it a early PCM? ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: TRBenj
Date Posted: October-29-2007 at 12:14pm
I thought that Escort was the predecessor to Commander, and Waukesha was the predecessor to PCM. I could be totally wrong. Ive never seen an earlier PCM/Waukesha to be sure- but I know my '78 uses the same pieces (t'stat housing, RWP, exhaust manifolds) as my '90. Edit: Pete, here are a few pre-'77 PCMs from the diaries that appear to be original: 
 ------------- |
Posted By: 8122pbrainard
Date Posted: October-29-2007 at 8:53pm
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Tim, You put me into my research mode! I wasn't sure of those years with the engines and I was curious. Got in touch with a friend and this is his email responce:
"The Waukesha's are easily identified by the hi-rise manifolds. They were green and then painted black when PCM took them over. Waukesha built many different engines in the industrial field in, you guessed it, Waukesha WI. The Escorts, as I recall came out of Detroit, and had log manifolds and genuine Ford graphics, so I am assuming it was a later version of a Ford Industrial Engine previously known as Dearborn Interceptor. The Escorts and Waukesha's were available at the same time and as I recall, there was sometimes a slight difference in price, but not much. I remember ordering and picking up parts from a official Ford Industrial warehouse in Brookfield WI. I only remember one or two Commanders. I thought they were made in FLA." ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: TRBenj
Date Posted: October-30-2007 at 11:08am
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Pete, that makes sense. Perhaps Escort was a remnant of Ford/Interceptor, rather than the predecessor to Commander. The manifolds sure look similar. The t'stat housing and RWP mounting sure look similar to the Commanders though. Lots of them in the diaries, but no good pics. Ill see if I can find one.
I guess its safe to say that you dont have a PCM/Waukesha though? ------------- |
Posted By: 8122pbrainard
Date Posted: October-30-2007 at 11:19am
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Tim, The plot thickens!! I'll have to get a picture of my engine tag. Like I said, it says Pleasurecraft on it!! ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: TRBenj
Date Posted: October-30-2007 at 11:45am
Its not hard to swap that tag, Pete- its just bolted onto the intake manifold, right? I swapped mine over to the new intake on my '90. My Tique doesnt have one- feel free to send me yours. I dont think your tag is original! ------------- |
Posted By: quinner
Date Posted: October-30-2007 at 12:07pm
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How many engine block drain plugs are on my Excalibur (SB Chevy)? I believe there are only (2), starboard (1) has the knock sensor and the port side is tapped for the HW supply on the shower. Am I missing some? Both those I mentioned are forward on the block. Would like to add some of those drains like Pete showed if possible.
------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1143" rel="nofollow - Mi Bowt |
Posted By: TRBenj
Date Posted: October-30-2007 at 12:21pm
According to http://www.planetnautique.com/modules.php?op=modload&name=News&file=article&sid=47&mode=flat&order=0&thold=0 - this tutorial , youre right on. ------------- |
Posted By: Hollywood
Date Posted: October-30-2007 at 12:31pm
Knock sensor or drain, can you do both? ------------- |
Posted By: 79Tique
Date Posted: October-30-2007 at 12:35pm
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Tim,
I sent you an email this morning. I'm gonna take the pics of the Commander in my 79 Tique today. I'll send them to you this afternoon. I'll also try to post them to this thread but have not yet learned how. I guess it's as good as any to learn as it's cold and dark around here right now. ------------- Work to live, not live to work. |
Posted By: boat dr
Date Posted: October-30-2007 at 12:55pm
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Do Not modify the plumbing as to the knock sensor,it relies on the sound wave to detect detonation through the water jacket.
It is a piezo-electric system that has a specific location and distance to work properly........ ------------- boat dr /diaries/details.asp?ID=4631 - 1949 Dart /diaries/details.asp?ID=1533 - 1964 American Skier |
Posted By: TRBenj
Date Posted: October-30-2007 at 12:59pm
I dont think anyones considering modifying it, Doc. PCM just plugs it into the block drain- gotta pull it to get the water out. You probably dont have to do that much down in the swamp, eh? ------------- |
Posted By: boat dr
Date Posted: October-30-2007 at 1:23pm
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Maybe I read that incorrectly, as i thought the plan was to TEE off the block with a petcock and use both......
Sorry for my ignorance,,,,,,, As to the winterizeing, it is still a ways off,lows here in the 50's high's today 80.... I really feel for you guys and the temps there............................ ------------- boat dr /diaries/details.asp?ID=4631 - 1949 Dart /diaries/details.asp?ID=1533 - 1964 American Skier |
Posted By: Hollywood
Date Posted: October-30-2007 at 1:28pm
Doc that is what I'm asking! You can install these drains everywhere else but still left having to pull the knock sensor right? ------------- |
Posted By: TRBenj
Date Posted: October-30-2007 at 1:34pm
Yeah, I think thats right. I think Ive mentioned it before, but a piece of step flashing works great to keep the water off the carpet when draining. ------------- |
Posted By: boat dr
Date Posted: October-30-2007 at 1:34pm
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I think because of the engine tilt removing the sensor is not needed, is it forward and slightly above the rear drain? If so this added step is not needed........ ------------- boat dr /diaries/details.asp?ID=4631 - 1949 Dart /diaries/details.asp?ID=1533 - 1964 American Skier |
Posted By: TRBenj
Date Posted: October-30-2007 at 1:36pm
The new CC's have the engine mounted almost perfectly flat. According to that tutorial I linked to, there is only 1 drain per side, and the knock sensor is in one of them. Do you have to pull both drains, or will you get most of the water with just one (to avoid pulling the knock sensor)? ------------- |
Posted By: M3Fan
Date Posted: October-30-2007 at 1:57pm
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Anyone know how to pronounce petcock? Is it "peacock" or "Pet-cock" or something else? ------------- 2000 SN GT40 w/99 Graphics/Gel 2016 SN 200 OB 5.3L DI https://forum.fifteenoff.com |
Posted By: eric lavine
Date Posted: October-30-2007 at 2:00pm
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why do you ask M3, are you thinking the word is a verb ------------- "the things you own will start to own you" |
Posted By: boat dr
Date Posted: October-30-2007 at 2:06pm
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This is my Weapon and this is my Gun....
This one is for fighting and this one for Fun. I have a pet dog and a pet cat, they sleep outside.My Pet Cock sleeps with me,and we ain't talkin' chicken here............ ------------- boat dr /diaries/details.asp?ID=4631 - 1949 Dart /diaries/details.asp?ID=1533 - 1964 American Skier |
Posted By: 8122pbrainard
Date Posted: October-30-2007 at 2:19pm
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pet·cock· (pet′käk′)
noun a small faucet or valve used in draining unwanted or excess water or air from pipes, radiators, boilers, etc. ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: quinner
Date Posted: October-30-2007 at 2:42pm
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Tim and I have discussed this prior but I guess the answer is a SBC only has the (2) drain plugs, and in my case one is occupied by the knock sensor while the other being a nipple for the shower HW supply. I typically have only removed the HW supply hose at the nipple to drain and not messed with the knock sensor assuming that most or all of the water will exit through just one side. This of course would be in addition to all of the other drain points such as the manifolds, heater hoses, water pump, etc.
------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1143" rel="nofollow - Mi Bowt |
Posted By: M3Fan
Date Posted: October-30-2007 at 2:55pm
I just did my buddy's SBC Malibu a couple weeks ago and quite a bit of water came out of the knock sensor side after draining the other side. ------------- 2000 SN GT40 w/99 Graphics/Gel 2016 SN 200 OB 5.3L DI https://forum.fifteenoff.com |
Posted By: eric lavine
Date Posted: October-30-2007 at 2:58pm
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Pet.....to stroke verb ------------- "the things you own will start to own you" |
Posted By: TRBenj
Date Posted: October-30-2007 at 6:38pm
Gabe sent me the pics of his 302 Commander to post. Anything look familiar, Pete? Obviously the manifolds are different, but the RWP bracket and t'stat housing should tell the rest of the tale. 
 ------------- |
Posted By: 8122pbrainard
Date Posted: October-30-2007 at 7:39pm
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Tim, Interesting! The biggest difference is the thermostat housing and the big hose from it to the circ pump. Mine has the cast "J" pipe just like the newer PCM's. My valve covers even seem to be different. Slightly shorter?
So, you want me to remove the bolt holding the PCM tag on and chance a manifold leak so I can send it to you but first I would need to send the tag out for radioactive carbon dating to prove it's original year. Wow, you sure are demanding today!! ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: Hollywood
Date Posted: October-30-2007 at 8:11pm
That's what happens when you're not getting enough pole, you get cranky. 
Pete's engine has a wedge plate. ------------- |
Posted By: TRBenj
Date Posted: October-31-2007 at 11:02am
Dont worry Pete, my tag wasnt bolted into a coolant passage or anything. I think its safe to remove 
HW, good news- the new pole will be here Mon. Any word from that guy with the ski? ------------- |
Posted By: Luchog
Date Posted: October-31-2007 at 11:21am
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hi all, sorry to hijack, but would there be any performance differences between a "piramid" manifold such as PCM's and a log style like Commander's??? ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=2095" rel="nofollow - 1980 Ski Nautique Commander 351W |
Posted By: JoeinNY
Date Posted: October-31-2007 at 11:52am
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I'll let ya know next week, I am just getting into my time of the year where instead of skiing I go through some trial semi scientific boat tests. Tonight I am going to find out how much/if any speed difference is made by removing the fins on my 83, over the next week I also hope to get with and without mufflers, and pcm manifolds vs commander style manifolds. I am not running a stock motor but I should end up with some usuable info.
-Joe. ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1477 - 1983 Ski Nautique 2001 1967 Mustang 302 "Decoy" http://www.youtube.com/watch?v=cO5MkcBXBBs - Holeshot Video |
Posted By: Hollywood
Date Posted: October-31-2007 at 12:04pm
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Are you removing ALL 3 of the fins? Sounds dangerous! ------------- |
Posted By: JoeinNY
Date Posted: October-31-2007 at 1:19pm
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Have removed, the main danger comes from the 18 holes that left in the bottom of the boat. I am hoping my extra heavy duty aluminum tape over job holds up. I am not expecting it to be dangerous other than that, I won't be attempting any power turns however. ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1477 - 1983 Ski Nautique 2001 1967 Mustang 302 "Decoy" http://www.youtube.com/watch?v=cO5MkcBXBBs - Holeshot Video |
Posted By: Luchog
Date Posted: October-31-2007 at 6:48pm
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you could try messing around with a home made rudder, perhaps a mimmic to the new mastercraft's. ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=2095" rel="nofollow - 1980 Ski Nautique Commander 351W |
Posted By: TRBenj
Date Posted: October-31-2007 at 6:57pm
For what purpose? Joe, Ill be interested to see if the fins actually do hurt the top end much. Dont be afraid of the power turns, they should be much easier with the fins removed! Some of the new wake boats are actually being built without fins now (not sure about CC, but some MC's). ------------- |
Posted By: Luchog
Date Posted: October-31-2007 at 7:31pm
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the MCs with no fins have an upgraded rudder with extra surface towards the prop.
that's why I suggested trying to mimmic that rudder and testing it in a CC. ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=2095" rel="nofollow - 1980 Ski Nautique Commander 351W |
Posted By: jbear
Date Posted: October-31-2007 at 10:29pm
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Luchog: Got the new place opened up yet?
Got pics? john ------------- "Loud pipes save lives" AdamT sez "I'm Canadian and a beaver lover myself"... |