HELP.... my threads fell out...... HELP

Petercheez13

i recently replaced my exhaust gaskets and when i unbolted the right side exhaust collar the threads came out with one of the bolts..... yet again it went from simple to well a big kick in the head. i am hoping i can just re-tap it one size bigger and bolt it back up but i wanted to check to see if any of the more experienced member had any advice before i go ahead and try to re tap the threads.... it wasnt a lot of damage so im hoping i can just go one size bigger b/c i dont want to have to expand the collar holes any advice is greatly appreciated thanks

MR.CHocko · Posted: Sun Apr 03, 2011 3:26 pm Post subject:

Can you give us some more information please? Spefically year, make and model of your bike. If it is a 60's era Japanese bike you will need Taps and dies made for JIS threads.

Petercheez13 · Posted: Sun Apr 03, 2011 6:46 pm Post subject: 1975 GT500

its a 1975 gt500... i have tapped holes before just never an exhaust bolt hole so close to the port and wanted to be sure i wasnt going to do more harm than good... are the japanese taps easy to get or would i have to order them?

05c50 · Posted: Sun Apr 03, 2011 6:53 pm Post subject:

If you're going to retap the threads in a larger size, you don't need JIS, you can make them anything you want, Metric, SAE,.....If I were you, I'd take a look at a heli coil or timesert kit. Might be better in the long run.

................Paul

dorT500 · Posted: Sun Apr 03, 2011 6:57 pm Post subject:

What Paul said and if the threads came out with the bolt, it probably left a pretty clean hole and you probably won't even need to pre-drill for the new insert.

650hardtail · Posted: Mon Apr 04, 2011 4:49 am Post subject:

maybe an old heli coil install that came out ??

Bikegeezer · Posted: Mon Apr 04, 2011 5:33 am Post subject:

Petercheez13 · Posted: Mon Apr 04, 2011 1:23 pm Post subject:

thanks for all the advice i decided to re-tap it with a metric tap the only thing is now i have to bore the collar hole, again not a big deal just another small set back. thanks again guys

geck0 · Posted: Mon Apr 04, 2011 6:13 pm Post subject:

you are going to want to use a helicoil or such so you can use the same stud. there are lots types to pick from. I have used them many times,

butch8231 · Posted: Mon Apr 04, 2011 9:59 pm Post subject:

The metric heli-coil is the best way to go, so all your exhaust studs are the same size. That lets the exhaust gaskets seal properly. You can get them at just about any auto parts store.

Petercheez13 · Posted: Mon Apr 04, 2011 11:33 pm Post subject:

after watching a how to video on helicoils i am pretty confident i can do that, and like some of u said it would help me maintain all the same size bolts.... now i have a new tap just in case haha thanks again guys i really do apreciate all the help i get from this forum.