spud
Apprentice
Posts: 1,275
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Post by spud on Mar 10, 2023 8:53:48 GMT 1
working on my 93 robin cant for the life of me get the top shock bolts out for the chassis crossmember tube infact snapped the head off of one trying ! any ideas cant heat it much as very close to the body and no roof for a drill  |
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Post by Joepublic on Mar 10, 2023 9:22:17 GMT 1
A can of freeze spray, dose, dose, dose?
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Post by rhyds on Mar 10, 2023 10:14:25 GMT 1
What's holding it the other side? A nut or a captive nut in the frame itself?
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spud
Apprentice
Posts: 1,275
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Post by spud on Mar 10, 2023 10:25:59 GMT 1
What's holding it the other side? A nut or a captive nut in the frame itself? it just passes through a tube in the tube if you know what i mean ! this is it on my scrap chassis but there is more bracing on this car so cant get a drill in Attachment Deleted |
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Post by Joepublic on Mar 10, 2023 11:03:53 GMT 1
Is the fibreglass above part of the outer shell in sight, or can you cut out the f/g drill / heat the bolt shank then re f/g the cut back in?
How many bolts holding the body? could you remove them and raise the body slightly?
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Post by Rhubarb on Mar 10, 2023 11:15:49 GMT 1
Patience and soak it daily, every day for at least a week.
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Post by chippie on Mar 10, 2023 14:56:35 GMT 1
Know anyone with an induction heater?
Heating/cooling should help loosen it….
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Post by sorted on Mar 10, 2023 17:31:50 GMT 1
Could you use a plumbers mat to protect the body while applying heat?
Heat is your friend here- there are bolts on both the Stag and MG B restos I would never have moved without it.
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Post by upkeep on Mar 10, 2023 18:05:03 GMT 1
Heat via induction heater, I personally don't subscribe to potions.
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spud
Apprentice
Posts: 1,275
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Post by spud on Mar 10, 2023 21:19:37 GMT 1
thanks for the advice im going to try the freeze spray first and see how that goes been soaking it for a while now im in no rush really
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Post by Rhubarb on Mar 10, 2023 22:20:59 GMT 1
Heat via induction heater, I personally don't subscribe to potions. Trouble is induction heaters are still pricey, way too pricey for a keen DIYer for occasional use  Plus heat and fibreglass isn't a good mix. |
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remmington
Apprentice
Owns Spark Eroder
Posts: 4,971
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Post by remmington on Mar 11, 2023 7:37:31 GMT 1
Heat via induction heater, I personally don't subscribe to potions. Trouble is induction heaters are still pricey, way too pricey for a keen DIYer for occasional use Plus heat and fibreglass isn't a good mix. I not got an induction heater - to get one with any "go" in it - they are still proper money. Heat works - even welding another bolt to the bolt in question with a stick ARC MMA welder - is better and more direct than an open flame torch. WD40 works - but you gotta be patient. Getting steel bolts out of steel is not normally a failure - getting weak steel half corroded bolts out is another matter - the real pain in mixed metals - dissimilar metals is where the real hate is! Thump end of bolt with hammer - apply WD40 - come back the next day and repeat > come back the next day and repeat > come back the next day and repeat > come back the next day and repeat > come back the next day and repeat > come back the next day and repeat > come back the next day and repeat > come back the next day and repeat > come back the next day and repeat > come back the next day and repeat > come back the next day and repeat |
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spud
Apprentice
Posts: 1,275
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Post by spud on Mar 11, 2023 8:36:45 GMT 1
Heat via induction heater, I personally don't subscribe to potions. Trouble is induction heaters are still pricey, way too pricey for a keen DIYer for occasional use Plus heat and fibreglass isn't a good mix. yeah 300 for an off brand one 600+ for a decent one |
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spud
Apprentice
Posts: 1,275
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Post by spud on Mar 11, 2023 8:40:51 GMT 1
Trouble is induction heaters are still pricey, way too pricey for a keen DIYer for occasional use Plus heat and fibreglass isn't a good mix. I not got an induction heater - to get one with any "go" in it - they are still proper money. Heat works - even welding another bolt to the bolt in question with a stick ARC MMA welder - is better and more direct than an open flame torch. WD40 works - but you gotta be patient. Getting steel bolts out of steel is not normally a failure - getting weak steel half corroded bolts out is another matter - the real pain in mixed metals - dissimilar metals is where the real hate is! Thump end of bolt with hammer - apply WD40 - come back the next day and repeat > come back the next day and repeat > come back the next day and repeat > come back the next day and repeat > come back the next day and repeat > come back the next day and repeat > come back the next day and repeat > come back the next day and repeat > come back the next day and repeat > come back the next day and repeat > come back the next day and repeatyeah i know all about mixed metals had to make a puller to get the head off the 78 robin ! |
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Post by upkeep on Mar 11, 2023 9:53:20 GMT 1
Heat via induction heater, I personally don't subscribe to potions. Trouble is induction heaters are still pricey, way too pricey for a keen DIYer for occasional use Plus heat and fibreglass isn't a good mix. I'm fortunate that we have one that I can borrow it's a Stanners i4 water cooled single phase unit heat placed exactly where you want it. but to be honest that is what you need.
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