I see the cast street plumber's fitting at the back of the manifold. I recommend you do likewise at the thermostat intake and the fitting at the front of the manifold. Reversing the hoses on the manifold (The Thatch Modification) would complete the upgrade.
What temperature?
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Originally posted by hanleyclifford View PostI see the cast street plumber's fitting at the back of the manifold. I recommend you do likewise at the thermostat intake and the fitting at the front of the manifold. Reversing the hoses on the manifold (The Thatch Modification) would complete the upgrade.
i have seen this referenced in other threads, also by Hanley I believe, but i dont know what it is, other than preferable to a squared off fitting where debris can collect at the back of the manifold. i have already been burned by this and would like to take all preventive measures to avoid such a recurrence.
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Originally posted by Vermonstah View Posti have seen this referenced in other threads, also by Hanley I believe, but i dont know what it is, other than preferable to a squared off fitting where debris can collect at the back of the manifold. i have already been burned by this and would like to take all preventive measures to avoid such a recurrence.
FWIW.
TRUE GRIT
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External Thermostat housing on exchange engine
Hi,
I ran my new Moyer exchange engine at 180 degrees by using the Indigo external Thermostat housing and 180 degree thermostat. I installed a fresh water cooling kit with the new engine as well and she ran nicely 180.
Here is a photo of the engine with it installed. I circled the housing
Danny Haughey
Rehoboth, MA
1973 Viking 33 - Sold
Currently a boat shopper
Buzzards Bay
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Originally posted by Sloopdogg View PostHi,
I ran my new Moyer exchange engine at 180 degrees by using the Indigo external Thermostat housing and 180 degree thermostat. I installed a fresh water cooling kit with the new engine as well and she ran nicely 180.
Here is a photo of the engine with it installed. I circled the housing
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Originally posted by hanleyclifford View PostVery nice installation and that alternator is an object of lust.
I actually sold that boat last fall and I'm "looking" for another, bigger hole in the water... LOL
DannyDanny Haughey
Rehoboth, MA
1973 Viking 33 - Sold
Currently a boat shopper
Buzzards Bay
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Originally posted by ndutton View PostFor RWC engines, beyond about 160°F salt begins to leach out of solution clogging the cooling passages. I've seen manufactured RWC mixing elbows (exhaust) completely closed off with salt. The engine prefers a higher operating temperature like 180 - 190° but in the case of RWC the cooling medium can't tolerate it.John Novotny
1973 Tartan 30 #186
Baltimore, MD
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To check the sending unit wiring for resistance: Disconnect the wire at the sending unit and the gauge. Run a jumper wire from one end of the wire with the other end near the other end of the sending unit wire. Measure the resistance. It S\B zero ohms.
To check the sending unit for grounding: One ohm meter probe on the body of the sending unit and one probe on battery ground. Use a jumper wire from battery ground to the vicinity of the sending unit if necessary.
TRUE GRITLast edited by JOHN COOKSON; 04-04-2017, 02:06 PM.
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Originally posted by JOHN COOKSON View PostTo check the sending unit wiring for resistance: Disconnect the wire at the sending unit and the gauge. Run a jumper wire from one end of the wire with the other end near the other end of the sending unit wire. Measure the resistance. It S\B zero ohms.
To check the sending unit for grounding: One ohm meter probe on the body of the sending unit and one probe on battery ground. Use s jumper wire from battery ground to the vicinity of the sending unit if necessary.
TRUE GRIT
update, I did find a picture and see no evidence of teflon tape.
Thanks JohnJohn Novotny
1973 Tartan 30 #186
Baltimore, MD
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Teflon tape will not affect the conductivity of the fitting. When the fitting is tightened, it cuts the tape into little spiral strips where the thread faces touch. These strips are then packed down onto the thread valleys, sealing them off. But the thread faces of the fitting and the substrate are in hard metal-to-metal contact. You can see this when you undo a taped fitting and the tape has been reduced to strings.@(^.^)@ Ed
1977 Pearson P-323 "Dolce Vita"
with rebuilt Atomic-4
sigpic
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Originally posted by Sloopdogg View PostHi,
I ran my new Moyer exchange engine at 180 degrees by using the Indigo external Thermostat housing and 180 degree thermostat. I installed a fresh water cooling kit with the new engine as well and she ran nicely 180.
Here is a photo of the engine with it installed. I circled the housing
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Originally posted by Oldlaxer1 View PostSince adding the Temp and Oil pressure warning system, I seem to be running cooler. At fast idle around 130 and at cruise just under 140. I used to run around 170. I'm guessing there is some resistance in the temp sender wire that I perhaps exacerbated while putting the Tee fitting in the block for the alarm and sender.Neil
1977 Catalina 30
San Pedro, California
prior boats 1987 Westsail 32, 1970 Catalina 22
Had my hands in a few others
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Originally posted by ndutton View PostI think the difference is because of the Tee. The gauge sender is farther away from the flow than it used to be skewing the reading.John Novotny
1973 Tartan 30 #186
Baltimore, MD
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