Cylinder Head Gasket....leaking
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Joined: Dec 2017
Posts: 179
From: Quincy Mass
Cylinder Head Gasket....leaking
Ok Senior members...Marquez...etc...
On my track bike that I rebuilt...cams etc.....engine runs great...needs a few carb adjustments, but I have an oil leak on the front cylinder where the cam chain rides at the front of the engine. There is no dent or mark on either side of the cylinder head, or engine block and the surfaces are "True and Straight". I am going to try and attach some pics of the Head Gasket that has been removed.
As you can see the part of the gasket that goes around the cam shaft and chain, did not seal between the multiple layers of steel that makes up the gasket. The New gasket that I have is the same, but I am assuming that the heat, when you start the engine up, is meant to weld this area of the gasket....yes?
Secondly, what is the torque of the two bolts that secure that part of the gasket to the block at the camshaft and chain area. The manual does NOT give any kind of torque settings for this....just tighten the two bolts.
Thanks.....
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Superstock
Joined: Jul 2018
Posts: 277
From: Champaign, IL
https://www.boltdepot.com/fastener-i...ed-Torque.aspx
When manuals don't specify a torque, I use this.
When manuals don't specify a torque, I use this.
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MotoGP
Joined: Apr 2006
Posts: 4,402
From: Kempner, TX
Ok Senior members...Marquez...etc...
On my track bike that I rebuilt...cams etc.....engine runs great...needs a few carb adjustments, but I have an oil leak on the front cylinder where the cam chain rides at the front of the engine. There is no dent or mark on either side of the cylinder head, or engine block and the surfaces are "True and Straight". I am going to try and attach some pics of the Head Gasket that has been removed.
As you can see the part of the gasket that goes around the cam shaft and chain, did not seal between the multiple layers of steel that makes up the gasket. The New gasket that I have is the same, but I am assuming that the heat, when you start the engine up, is meant to weld this area of the gasket....yes?
Secondly, what is the torque of the two bolts that secure that part of the gasket to the block at the camshaft and chain area. The manual does NOT give any kind of torque settings for this....just tighten the two bolts.
Thanks.....
Per the FSM, when no specific TQ is specified you refer to the "all others" chart
So following that, the cylinder side bolts are tightened to 9 ftlb
As for the gasket, surfaces clean, clean, cleaned again.
OEM or COMETIC only
TQ head bolts, threads oiled to final TQ in three steps, then TQ side bolts.
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