06specialedition Posted January 16, 2011 Report Share Posted January 16, 2011 I need some new end caps for my CPI silencers. The ones I have now are striped out, doesn't surprise me since I bought these pipes used. Any suggestions on where to buy these? CPI directly has them for $20 each, but I'm looking for the best deal I can find. Thanks guys. -Zach Quote Link to comment Share on other sites More sharing options...
jbooker82 Posted January 16, 2011 Report Share Posted January 16, 2011 If they are just the factoy round end caps why not just turn them. Redill and tap 3 new holes. Use the current holes in the silencer body to mark the new ones. Quote Link to comment Share on other sites More sharing options...
06specialedition Posted January 16, 2011 Author Report Share Posted January 16, 2011 (edited) If they are just the factoy round end caps why not just turn them. Redill and tap 3 new holes. Use the current holes in the silencer body to mark the new ones. Thats a good idea. My biggest problem right now is, I repacked them no problems there. Go to put the end caps back on and only 2 out of the 3 screws line up....its like the holes on the cap are barley off and not lining up perfect with the canister. Can aluminum be re-tapped? Edited January 16, 2011 by 06specialedition Quote Link to comment Share on other sites More sharing options...
gotta_goatsfast Posted January 16, 2011 Report Share Posted January 16, 2011 yes Quote Link to comment Share on other sites More sharing options...
06specialedition Posted January 17, 2011 Author Report Share Posted January 17, 2011 Re-tapped them and put new screws in..good to go now Quote Link to comment Share on other sites More sharing options...
WINDYCITYJOHN400 Posted January 18, 2011 Report Share Posted January 18, 2011 Surpisingly CPI doesn't have a standard spacing on the silencer holes. You would think that they would have all the holes on every pipe drilled the same. But they don't. If you pull the left cap off the left silencer and turn it 1/3 turn clockwise the holes won't line up. If you put the left cap on the right pipe...None of the holes line up. It's like they hand drill each hole by eye. When you buy new caps from them they come Un-drilled, so you have to drill and tap them yourself. So turning them and re-drilling them will work just as well. Otherwise mark your caps well before you pull them apart, or swap and twist till you find the original placement for both caps. Hope that helps you, and anyone thinking of re-packing soon. Quote Link to comment Share on other sites More sharing options...
06specialedition Posted January 18, 2011 Author Report Share Posted January 18, 2011 Surpisingly CPI doesn't have a standard spacing on the silencer holes. You would think that they would have all the holes on every pipe drilled the same. But they don't. If you pull the left cap off the left silencer and turn it 1/3 turn clockwise the holes won't line up. If you put the left cap on the right pipe...None of the holes line up. It's like they hand drill each hole by eye. When you buy new caps from them they come Un-drilled, so you have to drill and tap them yourself. So turning them and re-drilling them will work just as well. Otherwise mark your caps well before you pull them apart, or swap and twist till you find the original placement for both caps. Hope that helps you, and anyone thinking of re-packing soon. Yeah, I love these pipes but I'm coming to find out the silencers pretty much suck. The design isn't the best. At least I got them all nice and repacked really good. I wish I could run a different silencer on these...just something easier to repack and work on. Quote Link to comment Share on other sites More sharing options...
jbooker82 Posted January 19, 2011 Report Share Posted January 19, 2011 You could probably mod some toomey silencers to fit. They will probably have a little smaller perforated core though. Quote Link to comment Share on other sites More sharing options...
WINDYCITYJOHN400 Posted January 20, 2011 Report Share Posted January 20, 2011 Nothing wrong with the silencers. Packing one pipe is as hard as any other. The only issue is that the caps have to stay in the original clock position as they came off. Mark the 12 o'clock position on each and mark left and right cap before you take it apart, and it will go back together like a dream. Could be worse, you could be drilling out rivits and then having to re-rivit you pipes back together like you do with some brands... Quote Link to comment Share on other sites More sharing options...
jbooker82 Posted January 20, 2011 Report Share Posted January 20, 2011 Nothing wrong with the silencers. Packing one pipe is as hard as any other. The only issue is that the caps have to stay in the original clock position as they came off. Mark the 12 o'clock position on each and mark left and right cap before you take it apart, and it will go back together like a dream. Could be worse, you could be drilling out rivits and then having to re-rivit you pipes back together like you do with some brands... Yea I agree. Do 1 at a time so you dont mix bodies and end caps. You should be able to hold the end cap up to the body and see if the 3 holes line up. Allen screws are way better than pop rivits. Also a little black rtv helps seal the end caps. Other wise oil will seep out. The only easier option would be a toomey style where the end cap is held on by a snap ring. Quote Link to comment Share on other sites More sharing options...
06specialedition Posted January 20, 2011 Author Report Share Posted January 20, 2011 Yea I agree. Do 1 at a time so you dont mix bodies and end caps. You should be able to hold the end cap up to the body and see if the 3 holes line up. Allen screws are way better than pop rivits. Also a little black rtv helps seal the end caps. Other wise oil will seep out. The only easier option would be a toomey style where the end cap is held on by a snap ring. Yeah I ended up putting new black allen screws in them. CPI told me to use a little red locktite on the threads...they better not leak Quote Link to comment Share on other sites More sharing options...
DGFUNNY70 Posted February 16, 2011 Report Share Posted February 16, 2011 What size screw do the cpi's use in the end cap? Quote Link to comment Share on other sites More sharing options...
06specialedition Posted February 16, 2011 Author Report Share Posted February 16, 2011 What size screw do the cpi's use in the end cap? I just found some black anodized ones from home depot. Not sure on the exact size, but just take your stock screws in and match them up. Quote Link to comment Share on other sites More sharing options...
DGFUNNY70 Posted February 17, 2011 Report Share Posted February 17, 2011 I haven’t actually received them yet I just bought them a few days ago but from the pictures there are a few bolts that appear to be missing. I would like to get a tap and a few bolts before they show up so that I can get them back together as soon as possible. I have an Oregon trip coming up leaving the 25th so I'm trying to be a little extra prepared sense time is of the essence. Quote Link to comment Share on other sites More sharing options...
jbooker82 Posted February 17, 2011 Report Share Posted February 17, 2011 You could always get all new bolts. Drill and tap for what ever you want. Call cpi and see what they use. Quote Link to comment Share on other sites More sharing options...
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