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View Full Version : 2nd oil cooler make a difference


enduro400rider
03-05-2005, 12:59 PM
my 400ex runs a little hot and now that im going with a high comp piston kit its going to run hotter i saw that people are running 2 oil coolers will it make much difference? how hard is it to do and does anyone make a larger one that bolts up in place of the stock one? thanks
nosliw
03-05-2005, 01:04 PM
i havent done it but a friend of mine did something similar. he has a 400ex and rigged up an old automotive transmission cooler that he found in a junk yard. the surface area of that thing is 2-3X that of the stock oil cooler. and yes it made a big difference.
Chef
03-05-2005, 01:05 PM
The FST cooler does a really good job at extra cooling.
JDiablo
03-05-2005, 01:14 PM
Originally posted by Chef
The FST cooler does a really good job at extra cooling.

is that the one where you have to drill and tap the head?"
enduro400rider
03-05-2005, 04:56 PM
Originally posted by nosliw
i havent done it but a friend of mine did something similar. he has a 400ex and rigged up an old automotive transmission cooler that he found in a junk yard. the surface area of that thing is 2-3X that of the stock oil cooler. and yes it made a big difference.

did he remove the stock cooler and use the stock lines?
240GNCC400
03-05-2005, 07:22 PM
The 2nd oil cooler does make a difference. I have an oversized oil cooler and the 2nd oil cooler. Got it from FDO Racing. I dont know if they are still selling them or not. You can call Mike at (740)967-1078 for info
Chef
03-06-2005, 02:29 PM
Originally posted by 300exrida
is that the one where you have to drill and tap the head?"

Yep, the right side of the head cover and the clutch cover right where the oil pumps up the side of the cylinder.
nosliw
03-06-2005, 05:30 PM
Originally posted by enduro400rider
did he remove the stock cooler and use the stock lines?

im not sure about the lines but he did remove the stock cooler
JDiablo
03-06-2005, 07:57 PM
Originally posted by Chef
Yep, the right side of the head cover and the clutch cover right where the oil pumps up the side of the cylinder.


did you do it by yourself?or you had someone else do it
Chef
03-06-2005, 10:02 PM
I had it done during a valvetrain/cam swap.