thompsoncustom Posted March 23, 2016 Share Posted March 23, 2016 Just like the title says I'm having issues with my comp staying in place. Last time I soaked a 100% of the threads down with red loctite (prematex thread locker) but just looking at the gun right now I seen the comp looked a little off and yup there's wiggle in it again. Only put 50 rounds of 9mm major through it since the loctite. Link to comment Share on other sites More sharing options...
mro111lland Posted March 23, 2016 Share Posted March 23, 2016 Make sure is clean and dry use carb spray then use lock tight primer install comp let dry for 24 hrs Link to comment Share on other sites More sharing options...
tyler2you Posted March 23, 2016 Share Posted March 23, 2016 Try some Loctite 603. It's what my builder recommended and works wonderfully. You don't have a lot of set-up time with it, so you have to be quick to get everything aligned. Link to comment Share on other sites More sharing options...
Miranda Posted March 23, 2016 Share Posted March 23, 2016 loc-tite is kinda odd for results.... here is what I do when "It has to hold, no doubts." I clean both pieces with acetone. let it dry and do it again. let it dry and then apply the loc-tite. this is a potential digression ever used a copper crush washer? not sure if they are used on comps. I recall reading about stoning steel washers to position a comp.... long time ago. miranda Link to comment Share on other sites More sharing options...
Sarge Posted March 23, 2016 Share Posted March 23, 2016 Just like the title says I'm having issues with my comp staying in place. Last time I soaked a 100% of the threads down with red loctite (prematex thread locker) but just looking at the gun right now I seen the comp looked a little off and yup there's wiggle in it again. Only put 50 rounds of 9mm major through it since the loctite.While there hopefully is an easy fix I went through this repeatedly on my gun. My gun builder would do it right and within 100 rounds it came loose. Mine was real loose. After 3 attempts he changed the barrel. We figured the barrel threads were out of spec and there was just too much slop. No amount of loctite will cure a poorly threaded barrel or comp Link to comment Share on other sites More sharing options...
Aircooled6racer Posted March 23, 2016 Share Posted March 23, 2016 Hello: If the comp is titanium it will expend more than your steel or stainless steel barrel. I use a 6-32 setscrew to hold them in place as well as green Loctite. Hard to beat mechanical means to hold things in place. Thanks, Eric Link to comment Share on other sites More sharing options...
thompsoncustom Posted March 23, 2016 Author Share Posted March 23, 2016 Hmmm comps aluminum I didn't think about the different expansion rates. I was just looking at things again and the barrel bushing (CZ) is contacting the comp every so lightly as I can't tell it but I can see a little wear on the comp. The fast impact of the slide tapping the comp could be breaking the loctite. Link to comment Share on other sites More sharing options...
Slostang Posted March 24, 2016 Share Posted March 24, 2016 Rocksett. It doesn't break down from heat and somewhat acts as a gap filler. Link to comment Share on other sites More sharing options...
Miranda Posted March 24, 2016 Share Posted March 24, 2016 loc-tite will hold pretty good with a lot of slop they say it will hold a bearing in place up to 5 thousands... from all I have been able to test, I believe it. what loc-tite does not do well is hammering/shock. the comp does a lot of jacking the threads. give the stuff a chance, it is not steel. it is a glue. You have to put something the the system to pre-load the threads so that the metal of the comp is against the metal of the barrel. think of it this way the glue is intended to keep the nut from rotating off the bolt. it will not put the tension on the nut. you can loc-tite the lugnuts on you car but if you do not tighten them the wheel will come off the car. put a copper or aluminum crush washer in there and try it again. luck miranda Link to comment Share on other sites More sharing options...
thompsoncustom Posted March 24, 2016 Author Share Posted March 24, 2016 (edited) Well I don't think there is any/much slop in my barrel to comp threads but I found some info you guys might find interesting. Red loctite 271 is listed as high strength and can fill gaps up to .007 2760 loctite is listed as exceptional strength and can fill gaps up to .002 but is very impact and shock resistant.also works fine on unprimed oily bolt. Edited March 24, 2016 by thompsoncustom Link to comment Share on other sites More sharing options...
Yardbird Posted March 24, 2016 Share Posted March 24, 2016 High Temp 272 for me. Link to comment Share on other sites More sharing options...
Miranda Posted March 24, 2016 Share Posted March 24, 2016 I think I need to find 2760 loctite that sounds useful. miranda Link to comment Share on other sites More sharing options...
B_Seehawer Posted March 24, 2016 Share Posted March 24, 2016 2620 is what I use. Takes heat up to 650 degrees. Link to comment Share on other sites More sharing options...
Racinready300ex Posted March 24, 2016 Share Posted March 24, 2016 I wouldn't think the comp contacting the bushing is good. I would think you would want to take a little off the comp so that doesn't happen. I was having trouble keeping the comp on my glock. Some things I found, make sure the Loctite is new. Also make sure to apply Loctite to the threads in the comp, AND on the barrel. That is what made the difference for me. As others have said make sure everything is clean and degreased. Link to comment Share on other sites More sharing options...
Miranda Posted March 24, 2016 Share Posted March 24, 2016 ...contacting the bushing... isn't the comp supposed to be a bit smaller than the I.D. of the bushing? for a least a little way. ah well, machinery and fitting has a lot of possible solutions. miranda Link to comment Share on other sites More sharing options...
lcs Posted March 24, 2016 Share Posted March 24, 2016 Just like the title says I'm having issues with my comp staying in place. Last time I soaked a 100% of the threads down with red loctite (prematex thread locker) but just looking at the gun right now I seen the comp looked a little off and yup there's wiggle in it again. Only put 50 rounds of 9mm major through it since the loctite. Even with red loctite, the comp should not come loose with only 50 rounds fired. Check to make sure the comp is not hitting the slide or anything else. If the comp is timed incorrectly, that is probably why the comp is coming loose that quick as it is hitting something. You need the green loctite for one, but before you use that--make sure that comp is not hitting the slide. You will crack the comp once green loctite is used and the timing is off or you will crack the slide. Either way, it means lots of $$$ to fix. Link to comment Share on other sites More sharing options...
Racinready300ex Posted March 24, 2016 Share Posted March 24, 2016 See post #7 his comp is hitting the bushing. Link to comment Share on other sites More sharing options...
Ming the Merciless Posted March 24, 2016 Share Posted March 24, 2016 Another commonly overlooked issue is temperature during cure. Red Loctite (271) must be above 50f during the application & cure. Other flavors require different temperatures. The application & cure temperatures are generally listed at the bottom of the technical data sheet. Link to comment Share on other sites More sharing options...
Kingman Posted March 24, 2016 Share Posted March 24, 2016 Green and make sure the slide/bushing doesn't hit. Link to comment Share on other sites More sharing options...
thompsoncustom Posted March 25, 2016 Author Share Posted March 25, 2016 (edited) Well looked around town today for some red loctite and the only thing in town is the red prematex so I took the comp off and fixed it so I'm 100% sure the bushing and comp won't touch cleaned the threads on both a couple times with acetone and used a lot of red prematex so will see if that does it. If not I'll have to order some loctite online. Edited March 25, 2016 by thompsoncustom Link to comment Share on other sites More sharing options...
Sherwyn Posted March 25, 2016 Share Posted March 25, 2016 Loctite 272 high temp - usually available at auto parts store - it is used to hold some GM products together Link to comment Share on other sites More sharing options...
ipscjoe Posted March 25, 2016 Share Posted March 25, 2016 Is it a bull barell by chance? Those always eventually shoot loose. Not much threads there. Link to comment Share on other sites More sharing options...
bigboy69 Posted March 25, 2016 Share Posted March 25, 2016 Green 638 Loctite Link to comment Share on other sites More sharing options...
Dranoel Posted March 26, 2016 Share Posted March 26, 2016 Had this problem many years ago on my first open .45. Fix was simple: Remove the comp, drill and tap a hole for a set screw in the bottom of the comp, make sure the threads are clean on comp and barrel, re-coat with Loc-tite red, re-seat the the comp and align, tighten set screw. Never had another problem with it. Link to comment Share on other sites More sharing options...
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