howitzer85 Member 241 Member For: 17y 8m 12d Gender: Male Location: The marsh... Posted 16/10/10 05:36 AM Author Share Posted 16/10/10 05:36 AM I havent started getting the broken part of my bolt out yet, but I plan on trying to drill and use an easyout, although I did drop the cradle.So what do you guys recommend, should I keep my super stiff bush at the back and replace the 2 front ones to the same spec or should I replace all 3 with the comfort series?like shmitt said, if anyone has some pointers on getting the broken bolt out I'm all ears...(or eyes, lol) Link to comment Share on other sites More sharing options...
Smoke them tyres Member 557 Member For: 16y 10m 11d Gender: Male Location: Brisbane Posted 16/10/10 01:44 PM Share Posted 16/10/10 01:44 PM (edited) I would do the following:-go get yourself a small and a correct size pair of chrome vanadium drills. The first one is for the pilot hole in the bolt, and the second is to correct size the hole. Good location is important.-centre punch the remaining bolt. This will do 2 things.......locate the pilot drill and also unload any remaining tension/load/friction between the bolt and the alloy thread of the housing. Alloy housings tend to "bite" on the steel threads. Some Penetrene may also help.-most bolts are not hard on the inside and this grade of drill (the best), will give you the best chance of doing it without damaging the housing thread. The application of some moderate pressure with a slow speed is preferable to a high speed and overheating the end of the bit.-Don't use any Ezy Out. They are usually brittle and snap.....then you're really stuffed. The best ones to get are ones that are splined like a car axle along their entire length that have a matching "nut" that you put your spanner or socket on. They have some flex and give, rather than snap. Hammer it in and go to work. Good tool shops should have this better style unit. They're not dear.....-that sucker should then come right out.I would have all 3 mount bushes of the same durometer (hardness). ....ie I think the rear bush is ok to stay provided the other 2 are changed to the same bush material. This way, all 3 bolts are carrying their share of the load and have any excessive bending loads minimised. The fact that the bolt has snapped with just the rear bush upgraded does not surprise me. See Pat's (senna_T) and my post.I would also re-fit a std bolt. Stronger grade bolts will be stronger in tension, but more brittle in bend. They would also transfer more load to the housing of which it may not be able to withstand. Edited 16/10/10 01:47 PM by Smoke them tyres Link to comment Share on other sites More sharing options...
our06t Mmmmm......BOOST Member 3,135 Member For: 17y 6m 5d Gender: Male Location: central coast Posted 17/10/10 03:45 AM Share Posted 17/10/10 03:45 AM I've had the nolathane bush put in, and I am about to swap it for a superpro comfort but I noticed they have left the little metal hat off the back of the diff bush that's on the BF's just need to know if I should find one before I fit the superpro or is it not needed. Link to comment Share on other sites More sharing options...
Smoke them tyres Member 557 Member For: 16y 10m 11d Gender: Male Location: Brisbane Posted 17/10/10 12:17 PM Share Posted 17/10/10 12:17 PM Is it the dampening ring they have left off or another part? Link to comment Share on other sites More sharing options...
our06t Mmmmm......BOOST Member 3,135 Member For: 17y 6m 5d Gender: Male Location: central coast Posted 17/10/10 07:51 PM Share Posted 17/10/10 07:51 PM to be honest I don't know what it's called big ring/hat must be around 80-90mm in size fits over the back of the bush then the bolt goes through it . Link to comment Share on other sites More sharing options...
bjc Donating Members 2,823 Member For: 21y 1m 29d Gender: Male Location: Townsville Posted 18/10/10 03:22 AM Share Posted 18/10/10 03:22 AM Washer? Link to comment Share on other sites More sharing options...
our06t Mmmmm......BOOST Member 3,135 Member For: 17y 6m 5d Gender: Male Location: central coast Posted 18/10/10 03:31 AM Share Posted 18/10/10 03:31 AM maybe, bigger than any washer I've seen on a car, from looking at workshop manuals I have the ba didn't have one only the BF , it's more like a hat it's not just a flat washer . Link to comment Share on other sites More sharing options...
our06t Mmmmm......BOOST Member 3,135 Member For: 17y 6m 5d Gender: Male Location: central coast Posted 18/10/10 03:37 AM Share Posted 18/10/10 03:37 AM Is it the dampening ring they have left off or another part?Yes Pat tells me it is called a dampener. cheers Link to comment Share on other sites More sharing options...
Smoke them tyres Member 557 Member For: 16y 10m 11d Gender: Male Location: Brisbane Posted 18/10/10 09:10 AM Share Posted 18/10/10 09:10 AM (edited) I would say that it is only there to provide some extra "mass" for some sort of drive train dampening at a specific frequency range. My BFII doesn't have it fitted and the drive train is as quiet as. Besides, it provides easier inspection of the dreaded bush without it fitted.I don't think it really does much, so long as the bolt is not bottoming on the housing threads with it not fitted.....ie there is actually a proper torque on the bolt and the "joint" is tight.If all is ok with that, I wouldn't bother re-fitting it. Consider it weight reduction. Edited 18/10/10 09:20 AM by Smoke them tyres Link to comment Share on other sites More sharing options...
our06t Mmmmm......BOOST Member 3,135 Member For: 17y 6m 5d Gender: Male Location: central coast Posted 18/10/10 07:50 PM Share Posted 18/10/10 07:50 PM thanks for the info mate Link to comment Share on other sites More sharing options...
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