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Enduro Engine - 2 stroke Cylinder, Piston, Tranny, Bearings, Clutch, Pipes & Silencers, etc.


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Old 01-23-2014, 09:08 PM
myoung myoung is offline
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Default head torque spec

What is the torque spec for the 6 head bolts on my 08 ec300? I'm assuming incrementally tightening in a star pattern?


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Old 01-23-2014, 09:51 PM
waycrazy waycrazy is offline
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Here ya go
Place the cylinder head and tighten the screws in diagonal
pairs. Use thread lock.
Tightening torque: 25 Nm
- Check that the support surface of the thermostat cover is
perfectly clean.
- Fit the thermostat cover with a new gasket and tighten the
screws -1-. Use thread lock.
Tightening torque: 10 Nm

BTW 25nm roughly converts to 18.4 FT/lb
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Old 01-23-2014, 10:24 PM
myoung myoung is offline
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Right on thanks! Where can I find a service manual for this bike?
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Old 01-24-2014, 07:35 AM
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Old 02-07-2015, 04:51 AM
andy176 andy176 is offline
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Sorry to be bringing this back up but would these settings be the same as the 2002 ec300? Also is it better to build the o rings for the head in dry or coated with grease or three bond sealer? Thanks.
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Old 02-10-2015, 02:05 PM
5valve 5valve is offline
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Same, use dry, preferably from viton if you buy them locally.
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Old 02-10-2015, 03:02 PM
motopsycho87 motopsycho87 is offline
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http://www.gasgas.com/manuals/ec_shopmanual_06.pdf
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Old 02-10-2015, 04:25 PM
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Jakobi Jakobi is offline
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Quote:
Originally Posted by motopsycho87 View Post
Note that some of the torque specs in this document are WAY off. Important ones too. Both sides of crank, and clutch basket nut. Refer to the table above.
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Old 02-11-2015, 07:28 AM
andy176 andy176 is offline
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Cheers couldn't get them to stay in place so used a small amount of stickey grease to keep them in place I ordered the o rings and copper washers direct from gas gas so fingers crossed the problem stops. Thanks.
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Old 02-11-2015, 07:52 AM
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Another way to keep them in place is to stretch them out for a few minutes, then install the head when they are the "right size." I roll the outer o ring over the outside of the cylinder to stretch it, and I have a coffee can for the inner o ring. Give them a few minutes stretching out, set up all of the bolts, then put it all together in one quick shot before they shrink down.
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