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Hi guys simple question I hope…
I have read Tony’s tips searched the forum etc but hoping for a straight forward answer
Is there any reason NOT to install 160 degrees thermostats?
Tony’s tips suggest it should be done as all Cummins latest are.. many have changed, and over here with 40degC days I can’t see any harm in a bit of headroom with engine temps. I also plan on adding redundant alarms too eventually getting rid of the Cummins ones.
Anyway I look forward to the cons…
Steve
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Hi Steve
I have a 2004 caribean 35 with two 330hp cummins in Mindarie Perth WA , also noted how great this site is for those of us who prefer to get there hands dirty .
Have you changed your thermostats to the 160deg ones yet as i have been toying with it also keen to know what it dropped your running temps to? I typicaly sit between 86 and 88deg and am a self confessed paranoid worrier looking at gauges constantly and checking with IR gun.
HI Wayne
Ah the marina of Seagulls! _ we are only in Kinross but berthed at Hillaries. We do Visit Mindaire a bit and stay over at new year for the fireworks. We have friends with boats up there too.
I havent had a chance to fit the thermostats as yet.. Between my business, a 3 year old and everything else.. time is a bit short. I actually bought them to push me into free Tshirt territory! š
Temp wise – SB engine sits about 90deg and port sits about 98! (at about 2300rpm) The Port is wrong though and is a wiring issue, voltage issue that i’m working on very slowly!
Make the aftercoolers a priority if you havent done them previously… mine were a b*tch to seperate requiring a friends 100t press, a bottle of jack daniels (for the work) and several hundred dollars of repair to the core that I tried to remove. I have a metal press tool now that can be used to hammer the core out now should you need to use it. Hopefully you wont. I basically did both engines, rydlymed, removed aftercoolers / heat exchangers and overhauled them all, repainted and had both turbos redone as they were shot (exhaust design issue)
Re the overheat alarm – I ended up with a digital one from Silicon marine in the UK (had family coming over so they bought it over) It uses platinum sensors through the exhaust hose and has a twin read out with settable alarms – great for the worrier.. and has NMEA output too so can be used further down the line without the display. I’d say the device is very good just not productionised too much due to what I would imagine is fairly small production runs so used standard casings ect that arent the best four mounting how I wanted. Obviously the SBMAR stuff is great.. I just wanted more detail and it has shown a surprising difference in exhaust (wet) temps – I see around 38degC at idle and just above – upto 68degC at 800-1300rpm and from about 1300 it holds steady between 38 and 41degC.. It has an internal alarm and external alarm too so you know when something is wrong or your alarm is set too low.
The SBMAR a/cooler and HX kits are great as they include everything.. but if you need more anodes (mine seem to need 6 monthly but about to do a FW flush install) I can get them locally for about $8 a pop.. I used to use a freight forwarder to save postage costs.. but they now charge GST so its marginal as to whether its cheaper using them or not.
Feel free to PM me any questions.. Sometimes we have to get stuff locally.. but my preference is from here for most things.. Tony and the team give so much help and info for nothing.. we have to give something back!
Steve
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