Topic: advice on getting these damn cylinder head studs out on my CB750F?

[motomotard]

i cant get these damn things out.  the stock ones in there are fine, but ive got a set of heavy duty ones i wanted to put in.  ive tried all of them with the double nut method and only two of them came out. 

should i try heat? or is there some trick i dont know about.

what is the real benefit of the heavy duty ones anyway...

any help appreciated. 

the patient....

[OldSchool_IsCool]

Get something like these

http://search.harborfreight.com/cpisearch/web/search.do?keyword=stud+remover&Submit=Go

[michrobi]

Here's how I did mine last night http://forums.sohc4.net/index.php?topic=54392.15

The studs are at the end of that page. Good luck   

[MRieck]

Mapp gas heat....

[rugger81]

Take a soft rubber mallet and hit the studs till they bend down sideways a bit.  Then just spin them out by hand.  I did it using this method and had no trouble getting any of my studs out.  Ruins them of course, but you're putting in the heavy duty studs so you're good.

[Industrial Cafe]

I put 2 head nuts together and turn em outwith the small impact gun and a crows foot.  makes it so they won't break

[gregimotis]

I sprayed 'em with liquid wrench and let them set overnight, then applied a short cheater bar to the bent ends and twisted them out.  Took some effort (and some nerves) but they came out alright.


HD studs can be torqued down another ten pounds or so (read directions).  they will help with any head gasket leakage you are having or might have in the future.

[ev0lve]

Bend them a bit low on the post and turn them out? Worked for me.

I was afraid of hitting them so I put vice grips a few inches up, hand below to steady it, slow pressure at the top. They bent over pretty easily. Then just spin them out bending any others out of the way as you need to.

[Jerry Rxman Griffin aka MuthaF'er]

Get something like these

http://search.harborfreight.com/cpisearch/web/search.do?keyword=stud+remover&Submit=Go

I agree AND use a double nut

[mazingerzeca]

It seems to be a common problem on F2 engine. The same happened to me on the studs which are not inmersed in oil on F2 engines. Tried every method here described, and I ended having them drilled on a machine shop.

[Terry in Australia]

I've installed two sets of H/D studs in the last couple of years, to remove the crappy OEM studs, no fancy special tools required, just bend each stud at right angles and turn them, bend 'em back almost straight and wind them out. Not a big deal at all. Cheers, Terry.

[dpender836]

+1 on mapp gas, gets hotter than propane. Heat the stud low, but be careful not to melt the the cases, spray it a couple times with wd or pb blaster, (do this outside if you can because of the smoke)it shocks it plus lubes it, heat it back up and then use either the bent over method or double nut with a impact gun. If you get a real stubborn one you can rap the end of the stud with a ball peen hammer while it's hot. Patience is the key.

[motomotard]

still dont have these out.  went to HF to get the stud extractors and they didnt have em.

i like the bending them idea but am afraid that if i do that and it still wont come out ill be stuck with a bent up stud

[MRieck]

still dont have these out.  went to HF to get the stud extractors and they didnt have em.

i like the bending them idea but am afraid that if i do that and it still wont come out ill be stuck with a bent up stud

Heat them up....get the top case hot. They are seperated right?

[timdhawk]

i just used a small pipe wrench last night. worked great! took about 30 mins for all of them.

[754]

When you guys double nut them, is it at the top, or bottom....?
 looks like they would pass over.

[gregimotis]

still dont have these out.  went to HF to get the stud extractors and they didnt have em.

i like the bending them idea but am afraid that if i do that and it still wont come out ill be stuck with a bent up stud

Do It - it'll work.  And if it doesn't, you still have the HD's waiting, so you still have to get them out somehow - bend 'em, heat 'em, lube 'em, they will come out eventually.  Chance favors the bold.

[Terry in Australia]

When you guys double nut them, is it at the top, or bottom....?
 looks like they would pass over.

How the "F" can you "double nut" them at the bottom Frank? They're screwed right into the cases with no exposed thread! Are you on the drugs mate?

[jtb]

When you guys double nut them, is it at the top, or bottom....?
 looks like they would pass over.

How the "F" can you "double nut" them at the bottom Frank? They're screwed right into the cases with no exposed thread! Are you on the drugs mate?

A bit testy this morning, are we?

[Terry in Australia]

Ha ha, nah, just drinking Kentucky Bourbon and wondering what Frank's on John, it must be way stronger than Jack Daniels!

[MRieck]

When you guys double nut them, is it at the top, or bottom....?
 looks like they would pass over.

How the "F" can you "double nut" them at the bottom Frank? They're screwed right into the cases with no exposed thread! Are you on the drugs mate?

...and I thought it was just me who can get pissy...

[754]

          

 Yeah, wasnt thinking when i posted that one.....

 I was thinking about how it mist "wind up" when double nutted, as opposed to gripping near the bottom... just hate ruining parts.

[scondon]

It seems to be a common problem on F2 engine. The same happened to me on the studs which are not inmersed in oil on F2 engines. Tried every method here described, and I ended having them drilled on a machine shop.

I've done this with three F2 cases so far. I broke at least one stud on every one of them trying to get them out.

still dont have these out.  went to HF to get the stud extractors and they didnt have em.

i like the bending them idea but am afraid that if i do that and it still wont come out ill be stuck with a bent up stud

Heat them up....get the top case hot. They are seperated right?

Heat, lube, and impact are key, especially the heat.

    I had a broken stud in the case I'm using. I pooled PB Blaster at the base and threw the case on the bbq grill. Using a stripped nut removal socket (these things are GREAT, socket with a conical shape and reverse spiral cutting edge. The more you turn to loosen, the deeper they bite), I hit the socket with a hammer while turning it with a wrench and that pesky stub came out in short order.

[Jerry Rxman Griffin aka MuthaF'er]

Ha ha, nah, just drinking Kentucky Bourbon and wondering what Frank's on John, it must be way stronger than Jack Daniels!

Terry,

One more F'Up like calling Tennessee swamp water (aka Jack Daniels) Kentucky Bourbon and I'll have your Maker's Mark Ambassadorship revoked! 

[motomotard]

It seems to be a common problem on F2 engine. The same happened to me on the studs which are not inmersed in oil on F2 engines. Tried every method here described, and I ended having them drilled on a machine shop.

I've done this with three F2 cases so far. I broke at least one stud on every one of them trying to get them out.

still dont have these out.  went to HF to get the stud extractors and they didnt have em.

i like the bending them idea but am afraid that if i do that and it still wont come out ill be stuck with a bent up stud

Heat them up....get the top case hot. They are seperated right?

Heat, lube, and impact are key, especially the heat.

    I had a broken stud in the case I'm using. I pooled PB Blaster at the base and threw the case on the bbq grill. Using a stripped nut removal socket (these things are GREAT, socket with a conical shape and reverse spiral cutting edge. The more you turn to loosen, the deeper they bite), I hit the socket with a hammer while turning it with a wrench and that pesky stub came out in short order.

thats what im worried about, breaking the #$%*es in half or something

gonna try again in a min with some heat