Maintenance & Technical > KX250 / KX125
Coolant leak at cylinder head on rebuild....torque spec's for nuts
dinkyguitar:
So I tried dryed the gasket overnight, spraying brake cleaner.
This morning it looked dry, and I sprayed 2 coats of permatex copper head gasket on both sides.
Bolted it up and still the coolant was seeping from the head gasket. It's seeping in the middle on both the left and right sides at the head gasket. I even tightened the bolts down but no go.
After filling with coolant, I waited 5-10 mins. and I could see a water droplet forming at the cylinder head gasket on both sides. This is where they form on both sides.
I took everything apart and to me it looks like the gasket is wicking up the coolant and dripping it out the sides. I could see on the gasket that everything was making contact, and the spray on gasket had a ridge outlining all the holes in the head.
To test for warpage, I took the studs out, laid the head on top and uses those 3 m6 screws the hold the head in place not tightening them.
I then took a .0015" feeling gauge slipped it between and pulled the gauge out. I went all around the head. Each time the head would move as I pulled out feeler gauge, and I couldn't find any spots where the gauge just slipped in.
I'm thinking it a crappy head gasket....and since I need a new head gasket, I found this.
http://www.ebay.com/itm/Cometic-GASKET-KIT-KX250-87-88-/360973810522?pt=Motorcycles_Parts_Accessories&fits=Year%3A1987%7CModel%3AKX250&hash=item540bb73b5a&vxp=mtr
dinky,
Motorrad:
Cosmetic.
reklessj:
--- Quote from: Motorrad on September 03, 2014, 03:55:25 AM ---Cosmetic.
--- End quote ---
No no no Dont go raid the old ladies make up bag just yet!!¡!! :wink:
Buy Cometic
sandblaster:
--- Quote from: reklessj on September 03, 2014, 04:49:07 AM ---
--- Quote from: Motorrad on September 03, 2014, 03:55:25 AM ---Cosmetic.
--- End quote ---
No no no Dont go raid the old ladies make up bag just yet!!¡!! :wink:
Buy Cometic
--- End quote ---
+1 :-D
Foxx4Beaver:
--- Quote from: dinkyguitar on September 03, 2014, 03:48:15 AM --- I even tightened the bolts down but no go.
--- End quote ---
whatever you do...don't KEEP tightening down on the head nuts!...you'll start pulling the studs up through the cylinder, then you'll have a whole 'nother can of worms to deal with.
18ft lbs is the max.
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