James07 Posted August 3, 2021 Share Posted August 3, 2021 Hello all, i have a Suzuki EN125 engine i am using in a project, and it is a primarily air-cooled engine, however i was wondering if it is possible to fit an oil cooler/radiator to this? it is a pressurized oil system, and there is a oil pressure tap fitting, ( i think used for oil pressure gauge), so i was wondering if this is possible, as it would be helpful. Thanks in advance! Quote Link to comment Share on other sites More sharing options...
Ian Frog Posted August 3, 2021 Share Posted August 3, 2021 The short answer is yes it is possible to fit an oil cooler. But unless you are wrapping the resulting thing in bodywork that severely restricts airflow the original manufacturer didn`t feel it needed one so why go to the expense/hassle of fitting a non performance enhancing mod that will still cost you time and money? Sorry to sound negative but I spend a lot of time and effort removing stuff and lightening wherever possible in the search for lightness and performance gains. Cheers Ian Quote Link to comment Share on other sites More sharing options...
James07 Posted August 3, 2021 Author Share Posted August 3, 2021 Thanks for the reply! This is very true, it is likely i will not install one, however if the "short answer" is yes, how would you go about fitting one? i could do it, just by running an oil line from the pressure fitting, running through the radiator, and then back in somewhere (fill cap, etc), however i want to make sure this will not compromise the pressurized oiling of the engine... Cheers, James P.S only slight downside to factory cooling is that if you are idling, (vehicle stationary), then there is very little airflow. Also, where i am putting it, there may be less airflow than on the bike originally... Quote Link to comment Share on other sites More sharing options...
Ian Frog Posted August 3, 2021 Share Posted August 3, 2021 Your routing is fine and the early coolers were usually done this way (from memory lol) Please consider the increase in capacity and see if you can find out the kind of pressures this engine is expected to make as to maintain good flow it might be necessary to think about diameter of flow pipe and consequently a larger gravity fed return pipe will hopefully work quite well. Cheers Ian Quote Link to comment Share on other sites More sharing options...
James07 Posted August 3, 2021 Author Share Posted August 3, 2021 OK, thanks for the advice, i will see about pressures etc, also mebbe some pics... Cheers, James Quote Link to comment Share on other sites More sharing options...
fastbob Posted August 3, 2021 Share Posted August 3, 2021 I wouldn't bother honestly , we only have about five hot days a year . Quote Link to comment Share on other sites More sharing options...
James07 Posted August 4, 2021 Author Share Posted August 4, 2021 15 hours ago, fastbob said: I wouldn't bother honestly , we only have about five hot days a year . Hmm, he's onto something there... Quote Link to comment Share on other sites More sharing options...
linuxrob Posted August 5, 2021 Share Posted August 5, 2021 Be careful. that oil pump has not been designed for a cooler, simple tapping off and returning it to the sump will divert ALL the oil it can and you end up with NON where it is needed. It need to be in SERIES with the oil gallery IE through the pump to the cooler and then back ideally to the filter then main gallery to the other parts of the motor. The GN125 and other motors like this use roller bearing cranks and the lub systems do not require the pressures or flow a plain bearing motor need. the main part that needs pressure are the camshaft journals as they are run into the head. 1 Quote Link to comment Share on other sites More sharing options...
James07 Posted August 9, 2021 Author Share Posted August 9, 2021 Thank you for the information, linuxrob, this is exactly why i was afraid of using this method. Quote Link to comment Share on other sites More sharing options...
linuxrob Posted August 21, 2021 Share Posted August 21, 2021 Just came across this. https://www.ebay.co.uk/ Quote Link to comment Share on other sites More sharing options...
fastbob Posted August 21, 2021 Share Posted August 21, 2021 32 minutes ago, linuxrob said: Just came across this. https://www.ebay.co.uk/ For that money , why not ? It's just a bit of fun after all .. Quote Link to comment Share on other sites More sharing options...
skyrider Posted August 21, 2021 Share Posted August 21, 2021 28 minutes ago, fastbob said: For that money , why not ? It's just a bit of fun after all .. have you seen where it is made ? Quote Link to comment Share on other sites More sharing options...
fastbob Posted August 22, 2021 Share Posted August 22, 2021 12 hours ago, skyrider said: have you seen where it is made ? I can't see any reference to where it's made but I'd make an educated guess at China . Quote Link to comment Share on other sites More sharing options...
Mississippi Bullfrog Posted August 23, 2021 Share Posted August 23, 2021 22 hours ago, fastbob said: I can't see any reference to where it's made but I'd make an educated guess at China . Seller information Shenzhenshihailingchuankejiyouxiangongsi CHUNFANG HUANG longhuaqulonghuajiedaojinglongshequ donghuanyiluhengheguojidasha1102 518000 shenzhenshi China Quote Link to comment Share on other sites More sharing options...
fastbob Posted August 23, 2021 Share Posted August 23, 2021 7 hours ago, Mississippi Bullfrog said: Seller information Shenzhenshihailingchuankejiyouxiangongsi CHUNFANG HUANG longhuaqulonghuajiedaojinglongshequ donghuanyiluhengheguojidasha1102 518000 shenzhenshi China Oh yeah . Well it makes a change from Guangzhou . That's where everything I order seems to come from . 1 Quote Link to comment Share on other sites More sharing options...
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