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bry400ex
06-25-2005, 05:40 PM
is their a why to cool a 400ex engine

Toadz400
06-25-2005, 06:00 PM
I don't quite know what you're asking...but if it's "Is there a way to cool a 400ex engine better?" then yes, there is.

You can get an aftermarket larger capacity oil tank, made out of aluminum and some even have heat shields for protection and added cooling against the headers.

You can also rig up a second oil cooler (just buy another one and hook up the lines to that one also). A friend of mine did that for his 416EX and it seemed to work fine.

Buy/make air scoops to direct air towards the oil cooler and engine.

06-25-2005, 06:23 PM
the best thing to do is run really heavy weight oil like 20w50 or if its cold then 20w40 then get air scoops then start foolin with oil tanks, also make sure your not jeted too lean causeing you to over heat

Prey
06-25-2005, 07:25 PM
^^^ heavier oil ???????????????????????????????????

wicked400man
06-26-2005, 08:45 AM
havier oil wont make it run any cooler, it will just give it more protection when it is running hot. i would suggest checking that you arnt running lean, and if your not and its still running alittle hot i would invest is some scoops

bry400ex
06-26-2005, 01:30 PM
thanks but im going to bore it to a 465 can i put on some tipe of cooling unit on it like the yz400

06-26-2005, 05:45 PM
thanks but im going to bore it to a 465 can i put on some tipe of cooling unit on it like the yz400

you mean like the dirt bike :huh :huh :huh

bry400ex
06-26-2005, 05:51 PM
no i mess up i ment z 400 but for some reason i said yz400

2004exrider
06-27-2005, 04:41 PM
larger oil tank and cooler, or two oil coolers

chad502ex
06-27-2005, 05:07 PM
one of the all time screwed up but informative link there ever will be on oil coolers

:devil:


http://www.exriders.com/vbb/showthread.php?s=&threadid=61793

wicked400man
06-27-2005, 07:35 PM
Originally posted by bry400ex
thanks but im going to bore it to a 465 can i put on some tipe of cooling unit on it like the yz400 465:eek2: :huh ?

06-27-2005, 07:50 PM
thanks but im going to bore it to a 465 can i put on some tipe of cooling unit on it like the yz400

no, you cant

tater_kamik
06-27-2005, 11:53 PM
oil cooler you can do, do a search on google or on these forums, i know i have seen exact insructions for your quad somewhere!

fasterthanyouex
06-28-2005, 10:03 AM
yeah u can bore it out to 465 you have to buy a new topend.....


http://www.duncanracing.com/prod/322

TC426EX
06-30-2005, 06:44 AM
FST auxillary oil cooler, scoops, synthetic oil, and a carbon fiber scoop hood

:cool: