idk help torqueing head bolts

D

drainodan

New Member
i dont know if this will work im new to this program its very very CONFUSEING i just want to know what the torque is on my 66cc gas engine heads idk what you guys call them bolts, studs, cap head, studs, head bolts, head caps stud bolts,etc....... bike berry and all the other bike berrys do not have the proper ways of telling people of what is needed and how to fix if part is broken they just sell the item and or parts the you tube is worst in trying to find how to fix or repair broken items that need the attention there are many gas motor sites in which none of them have any way of manuals and or repair books and or manuals if this idea of bicycles with motors has no repair sites in which people can take their bike with motors to just like a car shop where they change your tires and or repair anything for a car but theres notting for this new bicycle with motors places to fix bicycles theres alot of people out that are buying these motors and no one to fix them i took my bicycle to a small engine repair they said the nearest repair shop was in china something is wrong picture so anyway thanks for anyone to help me with this delema:-||
 
drainodan said:
i just want to know what the torque is on my 66cc gas engine heads idk what you guys call them bolts, studs, cap head, studs, head bolts, head caps stud bolts,etc....... took my bicycle to a small engine repair they said the nearest repair shop was in china
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Chinese HT engines....What you want (and more) will be found in this document.
https://docs.google.com/document/d/1GcesQihc7-mm3hJGf7UPiqOaRXZ8ekUT99QUZq2qXXE/edit

drainodan said:
they said the nearest repair shop was in china
Click to expand...
These are the easiest engines to work on, he must not be a good mechanic, if nothing else he should of told you that they didn't work on these engines, NOT telling you the "nearest repair shop was in China"

Instructions.....There are plenty out there, you just need to know how to search.
http://www.grubeeinc.com/USA/STARFIRE SKYHAWK WEB INSTRUCTIONS.htm

http://motrax.co.nz/help-2/petrol-engine-installation-part-1/

http://livefastmotors.com/Motorized-Bicycle-Plan-Instructions/

http://livefastmotors.com/Chain-Drive-Gas-Motorized-Bicycle-Plans-Installation.html
 
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Torque specs for the 8mm studs is as Joe said; 12 to 15 foot pounds or about 120 to 140 inch pounds.
We normally suggest to discard the chrome acorn nuts in favor of shouldered hex nuts. It has been reported often that the acorn nuts can bottom out on the stud and not contact the head properly which will not give you good head gasket sealing.
There is often some inconsistency in stud length that makes relying on the acorn nuts questionable.
Good luck.
Tom
 
I torque my 8 mm head bolts to 140 in lb. After you run the motor a few times check them again. Don't over do it.
 
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