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The 2-Stroke Garage => Turning Wrenches => Topic started by: 350GUY on July 14, 2024, 10:03:40 AM

Title: Engine/Crank case nut size
Post by: 350GUY on July 14, 2024, 10:03:40 AM
Can someone please confirm the size of the nut please that sits on the 8 studs that holds the crankcase together, bolted down by them cylinder heads?
I am unable to remove the 8 studs from the bottom half , They just wouldn't budge. seems like I will have to buy the appropriate size nuts and then lock/loosen em.TIA
Title: Re: Engine/Crank case nut size
Post by: m in sc on July 14, 2024, 12:11:15 PM
just an m8x1.25

grab a stud extractor and maybe use some heat to loosen it.

these are VERY handy to have.  https://www.autozone.com/test-scan-and-specialty-tools/bolt-extractor/p/duralast-stud-extractor/1266645_0_0?cmpid=LIA:US:EN:AD:NL:1000000:TLS:19489353547&&CATARGETID=120054150001289970&CADevice=c&gad_source=1&gclid=CjwKCAjw7s20BhBFEiwABVIMra6MkxkYiD9Ht18WhQ0Xq_M962b5yNrozzWpxckx8DJhYlXvPTDJhxoC5LgQAvD_BwE&gclsrc=aw.ds
Title: Re: Engine/Crank case nut size
Post by: Aaron Russell on July 14, 2024, 01:45:44 PM
Just pulled all of mine out, they were pretty much glued in.
I just used 2 flanged nuts and tightened them together and used the bottom one to unscrew it,
Just used a ton of heat, torch comes in handy at times lol
Title: Re: Engine/Crank case nut size
Post by: m in sc on July 14, 2024, 03:27:12 PM
for sure, its a solid old school way to do it. I pulled all of the ones out of the motor last year in about 10 minutes with stud extractor and my dewalt nut driver. replaced with new ones from yambits.
Title: Re: Engine/Crank case nut size
Post by: 350GUY on July 14, 2024, 04:19:19 PM
Thank you Mark and Aaron, much appreciated.