COOLING ISSUES

Engines, Shafts, Steering, Struts, Rudders, etc.
goby
New poster
Posts: 8
Joined: Mon Aug 18, 2014 4:33 pm

COOLING ISSUES

Postby goby » Sun Aug 31, 2014 11:52 am

Hi all wonder if I my get some help with an intermitten heat up problem
History-88 twin 360s.last weekend return trip port guage showed temp rising then hold at 200.shut down and returned on starboard motor.
replaced thermostat,same issue after running various rpm at dock. Replaced temp sending unit.Same thing.Replaced raw water impeller same results
Checked temp w heat gun ,verified guage was fine.temp gun showed only running warm on left side of motor.
warmer closer to front of motor near sending unit. where do i look next
Thanks Goby
1988 32' Marinette Fisherman-Twin Chrysler 360-raw water cooling-Catawba Island, Ohio-Lake Erie

Roger2
Aluminum Star
Posts: 121
Joined: Tue Jul 15, 2014 8:20 am

Re: COOLING ISSUES

Postby Roger2 » Sun Aug 31, 2014 12:01 pm

I would back flush engine. Sounds like a piece from previous damaged impeller is clogging the flow.

Roger
"Sea Jay" a 37' Double cabin with twin factory Volvo diesels, 230 HP each. Twin Disk 1.54 Trans turning DynaQuad 19X21 props.
Roger Brown
Petersburg, IL

User avatar
bill
Royal Aluminum Star
Posts: 401
Joined: Sat Jul 12, 2014 7:17 am
Location: Grosse Ile MI

Re: COOLING ISSUES

Postby bill » Sun Aug 31, 2014 12:21 pm

BigM
This is why its important to have a signature. :roll:
I think you have a 1988 somekindofboat with twin 360's :?:
Raw or Fresh Water Cooled :?: (lake or ocean water running thru engine or self contained anti freeze like a car)
Do you have a good flow of water out the exhaust :?:
bill
ALUMINATION
Grosse Ile MI
Located on LakeErie
37' F/B Sedan
1975
Twin 360 Chrysler Marine
Raw water cooled
Hydraulic steering both helms
USCG Master Lic. Retired

Third Owner bill

goby
New poster
Posts: 8
Joined: Mon Aug 18, 2014 4:33 pm

Re: COOLING ISSUES

Postby goby » Sun Aug 31, 2014 4:59 pm

1988 Fisherman-Twin 360-freshwater raw water cooled.Appears to have plenty of flow at exhaust.
Have tried to post signature with no success.
Thanks for your help.
What is the,process to backflush
Goby
1988 32' Marinette Fisherman-Twin Chrysler 360-raw water cooling-Catawba Island, Ohio-Lake Erie

jralbert
Site Admin
Posts: 473
Joined: Fri Jul 11, 2014 9:15 pm

Re: COOLING ISSUES

Postby jralbert » Sun Aug 31, 2014 6:23 pm

Goby - at upper left of page under the Board Index button is the User Control Panel. Click it, then the edit signature tab where at the bottom right you'll see a box to enter your descriptive/signature info.If you're tried that and your signature doesn't doesn't display, post a note for Admin Joe Howard.

Meanwhile, you reported you have "freshwater raw water cooled" engines. It should be one or the other.
-joel-
former owner 1988 '32 FB Sedan
Chesapeake Bay
twin 318 / 240 hp
Potomac MD

goby
New poster
Posts: 8
Joined: Mon Aug 18, 2014 4:33 pm

Re: COOLING ISSUES

Postby goby » Sun Aug 31, 2014 10:12 pm

I meant fresih water lake Erie as,opposed to to salt
1988 32' Marinette Fisherman-Twin Chrysler 360-raw water cooling-Catawba Island, Ohio-Lake Erie

barkleydave
Site Admin
Posts: 350
Joined: Sat Jul 12, 2014 6:18 am
Location: Kentucky

Re: COOLING ISSUES

Postby barkleydave » Mon Sep 01, 2014 7:53 am

If all the above in in proper order...

Check your intake strainer gasket and o ring (on the old salad bowls)

Had similar issue couple seasons ago and that was the problem. It was such a small air leak I did not notice it until very close inspection.

Mine on Port would start to warm up as I increased rpms. Never overheated but got up around 200. Drove me nuts until I found the air leak.

good hunting!

safe boating,
dave
1987 Marinette 29 FB Sedan
Retired Boat Accident UL and USCG trained investigator
Retired USCG Captain

User avatar
bill
Royal Aluminum Star
Posts: 401
Joined: Sat Jul 12, 2014 7:17 am
Location: Grosse Ile MI

Re: COOLING ISSUES

Postby bill » Mon Sep 01, 2014 9:21 am

goby wrote:I meant fresih water lake Erie as,opposed to to salt

BigM
Nice sugnature :!:
I will assume your fisherman is a 32' :?:
You may want to check all you hoses and clamps coming from the "salad bowl" to the pump.
While you down there, 8-) pull the hoses off the heat exchanger for the transmission and back flush it with a garden hose. :idea:
bill
ALUMINATION
Grosse Ile MI
Located on LakeErie
37' F/B Sedan
1975
Twin 360 Chrysler Marine
Raw water cooled
Hydraulic steering both helms
USCG Master Lic. Retired

Third Owner bill

goby
New poster
Posts: 8
Joined: Mon Aug 18, 2014 4:33 pm

Re: COOLING ISSUES

Postby goby » Tue Sep 02, 2014 10:35 am

Thank You to All for your valuable input!
It is really great to be able to receive help from the Forum.
As it turns out the problem was remedied by cleaning the "salad bowl" rim ,gasket, cover and making a tight closure on the cover.
Thanks for your suggestion Barkley Dave
Goby
1988 32' Marinette Fisherman-Twin Chrysler 360-raw water cooling-Catawba Island, Ohio-Lake Erie

User avatar
bill
Royal Aluminum Star
Posts: 401
Joined: Sat Jul 12, 2014 7:17 am
Location: Grosse Ile MI

Re: COOLING ISSUES

Postby bill » Tue Sep 02, 2014 10:52 am

Thanks for the signature.
bill
ALUMINATION
Grosse Ile MI
Located on LakeErie
37' F/B Sedan
1975
Twin 360 Chrysler Marine
Raw water cooled
Hydraulic steering both helms
USCG Master Lic. Retired

Third Owner bill