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The Norfolk Broads Forum / Broads Boat Owners Q & A / engine oil cooler for perking 4108
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Posted By Discussion Topic: engine oil cooler for perking 4108

Similar Threads That Might Help :
Oil pressure guage flicker 4108| Perkins 4108 Marine Engine| Perkins 4108 engine| Perkins 4108 engine| engine oil| Engine oils|

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Davidpettitt
Jun-01-2018 @ 3:12 PM                           Permalink
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hi was wondering if anyone ever fitted a oil cooler to a perkins  .  I can't find one that is bolted of the header tank so I was wondering added one to there engine

Dilligaf
Jun-05-2018 @ 4:25 PM                           Permalink
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You'd probably need a sandwich plate for the oil filter and pipe one from there.

Dave.
Formerly 'LeoMagill'

annville
Jun-06-2018 @ 10:13 AM                           Permalink
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Hi you could place it inline with incoming water supply this will cool it better as water will be at its coldest, then two oil hose's flow and return to oil filter this is how it is usually done with cooler bolted to top of bell housing top.John

Yorkie
Jun-06-2018 @ 7:46 PM                           Permalink
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Perkins 4/108 have an oil cooler as standard - don't know about other models though.

regards, Yorkie

cgh
Nov-13-2018 @ 10:49 PM                           Permalink
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Would it make any differance to temp of the cooling water, my 4108 over heats over 1800 revs

Davidpettitt
Nov-13-2018 @ 11:22 PM                           Permalink
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I was finding I was loosing oil pressure on long run but since i fitted the oil cooler I keep 3 bar of pressure all the time. and engine temp is about 80 85 deg.  have u cleaned out the tube stack in the header tank  mine was bit dirty

annville
Nov-14-2018 @ 10:07 AM                           Permalink
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Hi CG I wouldn't expect it to check water inlet scoop for obstruction ie antifoul/debris  then water strainer then condition of impeller followed with the matrix in heat exchanger, are hoses kinked. Heat exchangers can get restricted with calcium as the river water is very hard in Norfolk/Suffolk. John

VetChugger
Nov-14-2018 @ 4:04 PM                           Permalink
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We had simialr problems but with water cooling when our raw water pump was playing up and we were having difficulty finding the correct impellor. We had to keep stopping, remove the cover plate and blather the current one in grease to persuade it to draw the water through. After a while we had severe overheating problems. Took ages to solve and we did this almost by accident. For some reason we removed the end cap of the heat exchanger and found it totally blocked with grease! Lesson learned!


Trevor



This message was edited by VetChugger on Nov-14-18 @ 4:06 PM

cgh
Nov-16-2018 @ 10:33 AM                           Permalink
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Thankyou all for your replies. I have checked all including water injection. Could the prop be too big putting to much strain on the engine at higher revs. The boat is a Bermuda 34.

annville
Nov-16-2018 @ 11:06 AM                           Permalink
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Hi CG No the size of prop would only cause the engine to work  harder if the prop was to small, if you can get near to the highest revs ie max revs the prop size is ok hire boats tend to be over propped to stop engine over revving. The faster the engine rev's the more heat it produced, there for more cooling required,ie a larger flow of water or area to remove the heat. The flow is restricted by first the design/size of pump area of heat exchanger,and PROVIDING no changes have been made from when built this can be discounted. WHAT changes if any have been made since the overheating has been happening, if none check weed hatch then the most likely is wear and tear to impeller, these need replacing periodically, if it has been replaced by the CORRECT one /size then the most likely is the matrix in the heat exchanger is blocked, remove inlet hose un bolt end cover and remove/extract the matrix hold up to the light you should be able to look through all the little holes. if blocked CAREFULLY rod through with suitable rod, welding rods are useful to do this, or a high pressure hose may well do the job,care must be taken not to damage the matrix as they are very thin and flimsy. John

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