ej6swap Posted October 7, 2009 Share Posted October 7, 2009 would anyone know the exact size or measurement i would need to try and rethread my integra transmission i accidently f*cked up the thread on it right on the passenger side transmission mount connecting. its the hole where the bolt keeps the mount onto the tranny. i used the air gun when i was trying to install my aftermarket mounts so im pissed that i forgot to switch it over to loosen the bolt but instead i left it at tightening. need help asap also how easy is it to do this i have never done it before. what tools do i need as well. Link to comment Share on other sites More sharing options...
Blown330 Posted October 10, 2009 Share Posted October 10, 2009 Use one of the other bolts to see what thread pitch and length of bolt you need first. As far as extracting the broken one? Really depends on how much room you have to work with and how good a set of tools you have. If it were me I'd use a heavy duty drill to drill a pilot hole and hammer in a bolt extractor. Get a small torch to heat the surrounding metal up a little and back it out a little at a time. Hope you didn't gall any threads in the transmission too. At best you get the bolt out, run a tap to clean up the bolt hole, and go about your business. At worst you are taking that transmission to a machine shop. Link to comment Share on other sites More sharing options...
Orca89 Posted October 10, 2009 Share Posted October 10, 2009 Use one of the other bolts to see what thread pitch and length of bolt you need first. As far as extracting the broken one? Really depends on how much room you have to work with and how good a set of tools you have. If it were me I'd use a heavy duty drill to drill a pilot hole and hammer in a bolt extractor. Get a small torch to heat the surrounding metal up a little and back it out a little at a time. Hope you didn't gall any threads in the transmission too. At best you get the bolt out, run a tap to clean up the bolt hole, and go about your business. At worst you are taking that transmission to a machine shop. Good advice, except for one thing. Using a tap is a bad idea for something that important, get a thread chaser instead. It'll be easier, faster, and do a much better job. Link to comment Share on other sites More sharing options...
Blown330 Posted October 10, 2009 Share Posted October 10, 2009 Good advice, except for one thing. Using a tap is a bad idea for something that important, get a thread chaser instead. It'll be easier, faster, and do a much better job. That's assuming that everything came out clean and the treads in the housing weren't seriously mashed. From what it sounds like he might be drilling/re-threading a size up or using a heli-coil/threadcert. I've done this plenty of times with aluminum heads when the sparkplugs were over-torqued or seized. Link to comment Share on other sites More sharing options...
ej6swap Posted October 12, 2009 Author Share Posted October 12, 2009 no the bolt came out with ease but the rethreading part is the confusing part cuz i dont know which size to use i will just try my best to guess and return the rethreading kit until i find the right one or else just get another transmission so i wont have to deal with it anymore until later cuz i need my car asap because im in minnesota and it has started to snow already crap im soo pissed. oh and the threads inside the transmission did came out as well so i think i would either use a bigger bolt or either buy a new tranny. THANKS FOR THE HELP!!! Link to comment Share on other sites More sharing options...
Blown330 Posted October 13, 2009 Share Posted October 13, 2009 no the bolt came out with ease but the rethreading part is the confusing part cuz i dont know which size to use i will just try my best to guess and return the rethreading kit until i find the right one or else just get another transmission so i wont have to deal with it anymore until later cuz i need my car asap because im in minnesota and it has started to snow already crap im soo pissed. oh and the threads inside the transmission did came out as well so i think i would either use a bigger bolt or either buy a new tranny. THANKS FOR THE HELP!!! Well, first off you can almost bet the bolt is Metric and not SAE so that narrows down the choices. All you really have to do is use a thread pitch gauge on one of the bolts and it will tell you the type of bolt you need (e.g. 10x1.25, 12x2.0, etc). The gauge looks like a little pocket knife with blades that have different serrated edges. Just place them on the bolt until the teeth match the bolt's thread pattern and that will tell you most of the info you need. You can measure the length of the bolt by placing a ruler under the bolt head and measure to the end (it's metric so measure in centimeters, you might have to convert to mm or inches depending and where you buy the bolt) as that will have to be the same no matter what. Sizes typically go up in 2mm increments so if the factory size is a 12x1.5x60 you probably want to find a 14x1.5x60. Unless you can see clear through the bolt hole you can also bet it has been blind tapped so you might be better off getting a heli-coil kit for the factory sized bolt. Kits usually include the proper dill bit and tap so it saves buying extra tools. It really is not a difficult or costly repair, you should be able to do for less than $20. Link to comment Share on other sites More sharing options...
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