CRF 450 2009

sloth_3toes
Edited Date/Time 9/8/2014 1:33am
just changing my engine and gearbox oil on me bike where you take the oil filter out the two bolts one long one short ... the long one came out no probs but the short one was tight coming out and its stripped inside where the bolt goes in .... can I tap the thred out or is it stuffed ???? I also haven't chucked fresh oil in it yet as I cant tighten up the bolt is my bike ok to sit without oil in it ???? cheers
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KICKERMAN360 8/16/2014 2:16am
8/16/2014 2:16am
You can let it sit without oil until you fix it, and put a helicoil or timesert to replace the thread. Used a helicoil to fix stripped threads in an engine case before, no problems.
ky_savage
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ky_savage 8/16/2014 4:24am
8/16/2014 4:24am
I just had to heli-coil that exact hole for a friend on his 2006 CRF450.
sloth_3toes 8/16/2014 10:47pm
8/16/2014 10:47pm
helicoil sweet thankx heaps from Australia !!!!!!!
dean122
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dean122 8/16/2014 10:57pm
8/16/2014 10:57pm Edited Date/Time 8/16/2014 10:59pm
Word of advice also for these 2 oil filter bolts for the CRFs.

Buy ti replacement bolts online (ebay has a ton) due to the strength and rolled threads. These two bolts inparticular love to stretch and will cause stripping taking them out or putting them in. Because you're constantly changing oil and oil filters, at least you SHOULD be, the weak stock bolts fatigue. The long one loves to twist and snap inside the ignition cover.

You can pick up ti bolts for $4-6 each and is a great investment, plus they look trick. You'll want 1each of 6x15 and 6x75 Ti Hex bolts.

The Shop

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tmauto769 8/17/2014 4:52am
8/17/2014 4:52am
dean122 wrote:
Word of advice also for these 2 oil filter bolts for the CRFs. Buy ti replacement bolts online (ebay has a ton) due to the strength...
Word of advice also for these 2 oil filter bolts for the CRFs.

Buy ti replacement bolts online (ebay has a ton) due to the strength and rolled threads. These two bolts inparticular love to stretch and will cause stripping taking them out or putting them in. Because you're constantly changing oil and oil filters, at least you SHOULD be, the weak stock bolts fatigue. The long one loves to twist and snap inside the ignition cover.

You can pick up ti bolts for $4-6 each and is a great investment, plus they look trick. You'll want 1each of 6x15 and 6x75 Ti Hex bolts.
Never heard this one before. Had a lot of crfs and haven't had this issue. If you are cranking those bolts hard enough to snap them off inside your cases or stripping the threads you might need to be using a torque wrench.
TeamGreen
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TeamGreen 8/17/2014 9:45am
8/17/2014 9:45am
dean122 wrote:
Word of advice also for these 2 oil filter bolts for the CRFs. Buy ti replacement bolts online (ebay has a ton) due to the strength...
Word of advice also for these 2 oil filter bolts for the CRFs.

Buy ti replacement bolts online (ebay has a ton) due to the strength and rolled threads. These two bolts inparticular love to stretch and will cause stripping taking them out or putting them in. Because you're constantly changing oil and oil filters, at least you SHOULD be, the weak stock bolts fatigue. The long one loves to twist and snap inside the ignition cover.

You can pick up ti bolts for $4-6 each and is a great investment, plus they look trick. You'll want 1each of 6x15 and 6x75 Ti Hex bolts.
Mettec or CRFs Only for good ti bolts.

You may still have threads in there. Measure the depth of the hole and put a new fresh bolt in it and count the number of rotations to determine how many threads are left. I'd want at-least 4 full threads and I'd use a torque wrench...those are very "light torque" bolts.

You are best off using a heli-coil.

Good Luck!
Radical
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Radical 8/17/2014 9:52am
8/17/2014 9:52am
fyi: This makes sense, but isn't obvious. Helicoils are stronger than original threads in aluminum. When I was a machinist we would make parts for the military that required installing helicoils in the brand new parts.

If you need them, don't hesitate.
brimx153
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brimx153 8/17/2014 11:33am
8/17/2014 11:33am
I am nearly sure the tread on that goes a lot longer than the length of the bolt , just clean the bad treads and get a longer bolt and its fixed , a lot easier than than taping it , know a good few people did this , cases are soft alli , and people over tighten them
hillbilly
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hillbilly 8/17/2014 2:04pm
8/17/2014 2:04pm
dean122 wrote:
Word of advice also for these 2 oil filter bolts for the CRFs. Buy ti replacement bolts online (ebay has a ton) due to the strength...
Word of advice also for these 2 oil filter bolts for the CRFs.

Buy ti replacement bolts online (ebay has a ton) due to the strength and rolled threads. These two bolts inparticular love to stretch and will cause stripping taking them out or putting them in. Because you're constantly changing oil and oil filters, at least you SHOULD be, the weak stock bolts fatigue. The long one loves to twist and snap inside the ignition cover.

You can pick up ti bolts for $4-6 each and is a great investment, plus they look trick. You'll want 1each of 6x15 and 6x75 Ti Hex bolts.
TeamGreen wrote:
Mettec or CRFs Only for good ti bolts. You may still have threads in there. Measure the depth of the hole and put a new fresh...
Mettec or CRFs Only for good ti bolts.

You may still have threads in there. Measure the depth of the hole and put a new fresh bolt in it and count the number of rotations to determine how many threads are left. I'd want at-least 4 full threads and I'd use a torque wrench...those are very "light torque" bolts.

You are best off using a heli-coil.

Good Luck!
I think the hole is deeper also,if you cant find a bolt that is the right length to work,add a couple washers to take up the extra bolt.
sloth_3toes 8/19/2014 6:32am
8/19/2014 6:32am
cheers everyone for the replys ....I chucked a heli coil in it and it worked a treat then I did the gear box oil everything was good untiol I took off the bolt to check the level and that was fukn stripped too so I got yet another delema as I don't wanna drill this out incase the filings go into the gear box .... this was my brothers bike he just got a brand new box and engine done and im wondering if the shop fuked em ????? unbelievable how can I helicoil this without the filings going into the box ?????
sloth_3toes 8/19/2014 6:33am
8/19/2014 6:33am
and by the way both bolts that were stuffed were hard to take out its not like ive stripped them putting em back in
hillbilly
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hillbilly 8/19/2014 10:14am
8/19/2014 10:14am
sloth_3toes wrote:
cheers everyone for the replys ....I chucked a heli coil in it and it worked a treat then I did the gear box oil everything was...
cheers everyone for the replys ....I chucked a heli coil in it and it worked a treat then I did the gear box oil everything was good untiol I took off the bolt to check the level and that was fukn stripped too so I got yet another delema as I don't wanna drill this out incase the filings go into the gear box .... this was my brothers bike he just got a brand new box and engine done and im wondering if the shop fuked em ????? unbelievable how can I helicoil this without the filings going into the box ?????
They prolly ran them in with air ratchet or worse.

Use a shop vac hold it next to the bit while drilling then against the hole when done.

Pour oil in it with leaned over to wash out any inside. , what is left wont hurt the tranny.
hbdesigns913
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hbdesigns913 8/19/2014 10:32am
8/19/2014 10:32am
You can also dip the drill bit in wheel bearing grease before you drill. This will hold the shavings. Drill a small amount, wipe off the shavings and repeat.
hillbilly
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hillbilly 8/19/2014 3:35pm
8/19/2014 3:35pm
hbdesigns913 wrote:
You can also dip the drill bit in wheel bearing grease before you drill. This will hold the shavings. Drill a small amount, wipe off the...
You can also dip the drill bit in wheel bearing grease before you drill. This will hold the shavings. Drill a small amount, wipe off the shavings and repeat.
Good idea,learned something here today otherthan some guy can go without lofting a load for a decade.
sloth_3toes 8/19/2014 7:02pm
8/19/2014 7:02pm
thankx everyone for the feedback ill have to try it when I get home next back to work for 2 weeks means no riding Sad
sloth_3toes 9/8/2014 12:45am
9/8/2014 12:45am
I went into the Honda shop today they reckon I should take the whole side cover off and drill and tap it while its off I just have to drain the coolent and have the bike on the side they reckon any one done it this way
FIREfish148
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FIREfish148 9/8/2014 1:33am
9/8/2014 1:33am
You shouldn't be tightening the bolts to the point that they stretch though. The shop manual says to "tighten bolts securely" then gives you a specified torque of 12 in/lbs for the oil drain bolt.

The golden torque for most of the common bolts in your engine case is 12 in/lbs.Super easy to over torque, as all of you who have torque wrenches know.Grinning

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