How do you remove a rusty bolt in an enjine block to remove a starter motor?

Question

I have tried penetrating oil but no luck. Any suggestings are welcome.

Answer 1

you can try some sanding paper and or special rust removers like evapo rust , or oxy solve ,I hate to say this ...but if all else fails you may have to break it off...

Answer 2

NO dont break it off! That's a wole lotta extra work. A few things to try would be a penetrating oil ike PB Blaster or liquid wrench, but get the PB Blaster if you can. Spray it, let it soak, spray it again, let it soak... If you can do it a few time before you try to loosten the bolt.

Remember it isn't the head of the bolt that stuck it's the threads, so spray where the different pices meet. Sometimes I tap the area with a hammer (I sais tap) because there is generally aluminum bell housing (where the starter is bolted)

Whe you try to take out the bolt use a six point socket and the least amount of extensions to ensure your getting the most torque out of your tools. These bolts can be stubborn, but more than likely you'll get it out without breaking it, they are hardened bolts.

Sometimes a little heat works great, but If you choose to go that route let someone with experience use the torches.

Answer 3

Make sure to use a six point socket. Follow the advice of the others, with a ratchet and breaker bar keep a steady pressure on the bolt and most important if you can tap on the end of the ratchet, light to heavy. Keep tapping and pulling, the vibrations will help the oil to penetrate and the rust to free.

Good Luck

Answer 4

First try to tighten it, this sometimes breaks it free. If not use some heat like a propane torch. If that doesn't work cut the head of the bolt off and then work on getting it out.

Answer 5

get some PB Blaster.....spray it on the blot really good, that stuff will seep in past the threads after a little bit and should loosen it right up. i use that stuff all the time, i used to work on cars for a living. try that, if that dont work, you can try heating it up with a small torch and using your ratchet on it while its still hot. if that fails, your probably gonna have to break it, then go through the trouble of tapping the hole back out and putting a heli coil in the hole

Answer 6

keep applying the oil and let it set for an hour.....use a heavy ratchet wrench and put a 2 foot or small length pipe on it....use caution though as this extra torque may snap the head...ease the bolt off.....you may have to revert to a combination of methods like a torch and wrench

Answer 7

Spray it with WD-40 and gently tap it so the oil works in, it will take time but be patient it will work. Don't break it off unless you have away to remove the broken parts.

Answer 8

Use a non slip socket and keep at it. If it still slips then hammer another socket, one size smaller onto the stud, and keep the pressure in towards the stud. If at first....
There can only be one winner and it aint going to be the bolt

Answer 9

You can try to break it off, i can't say much more than wd40 penetrating oil and a breaker bar. if it does break be sure to take a tap & die to it so you can replace the bolt.

Answer 10

if you can youll need to get a torch in there and heat the block where the bolt is threded in, get it red hot, but not too red.then try to back out the bolt. use antisieze on the new bolts.

Answer 11

get a blowtorch and hold it on the bolt for a while, that might help, and also don't be afaid to use air tools or even using a cheater bar connected to a breaker bar