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View Full Version : Changing Head Gaset On The Z400?



TRFOXX
02-24-2004, 07:26 PM
i JUST BOUGHT A Z400 AND THE DEALER TOLD ME TO CHANGE THE HEAD GASET FOR THE FIRST MOD I SHOULD MAKE. hE SAID TO USE THE DR400 DIRTBIKE HEAD GASET, HE SAID IT WOULD MAKE A LOT OF DIFFERENCE IN POWER. iM GOING TO PUT A PIPE AND REJETT IT, BUT HE SAID MAKE SURE THAT I DO THIS ? HAVE YOU GUYS HEARD OF THIS? LET ME KNOW THANKS!!

dads400ex
02-24-2004, 08:02 PM
Head gasket won't make a differance, it is the base gasket that needs changed.
It will raise your compression some.

4TraxRider
02-27-2004, 09:52 AM
My buddy did it to his, he said if you've got the engine apart already, then do it, but the power difference is not worth changing the base gasket unless you have to for some reason anyway. If you eventually put a high comp piston in then go for it.

jbfoco
02-28-2004, 12:04 AM
Check out Z400central.com this has been talked about a lot. I wouldnt tear into a new motor unless your going all out. The DRZ head gasket will only give you one HP. Do the basic mods 1st then get into the motor.

K&N (no lid)
jetkit
pipe
cams
carb
cdi+valve springs
440 kit
port and polish

There you go!!