stony Posted March 16, 2014 Share Posted March 16, 2014 I'm redoing some struts i have for the drag car. Everything i have on the current struts will swap over. All i need is the threaded stuff you slip over the tube. Anybody know where i can get this stuff? I don't need the entire coilover swap just the threaded sleeve. Quote Link to comment Share on other sites More sharing options...
RebekahsZ Posted March 16, 2014 Share Posted March 16, 2014 Speedwaymotors.com Quote Link to comment Share on other sites More sharing options...
JMortensen Posted March 16, 2014 Share Posted March 16, 2014 www.colemanracing.com also has them. Quote Link to comment Share on other sites More sharing options...
stony Posted March 16, 2014 Author Share Posted March 16, 2014 Cool thanks... any idea what size diameter i need. they are 280z struts. Quote Link to comment Share on other sites More sharing options...
stony Posted March 16, 2014 Author Share Posted March 16, 2014 So the struts I have are 55mm OD (2.165 in OD) the collars i found on Coleman racing are 2.08 ID. I'm guessing that if i froze the strut housing and heated the aluminum collar... it would slip right on? Quote Link to comment Share on other sites More sharing options...
stony Posted March 16, 2014 Author Share Posted March 16, 2014 these say they at for 2 OD wonder if heat and freezing would get them over a 2.16 OD strut :> http://www.speedwaymotors.com/Garage-Sale-QA1-Coilover-Kits-2-Inch-Body-7-Inch-Coilover-Sleeve,79340.html Quote Link to comment Share on other sites More sharing options...
RebekahsZ Posted March 16, 2014 Share Posted March 16, 2014 They are so cheap. And speedway has a great return policy. They appear to be exactly what is on my car with parts I bought from ground control 20 years ago. If it were me: buy them and try them. If they don't fit, send 'me back. Of course you wouldn't want to do all that heating and cooling. Mine are a little loose on my 240z strut tubes so they are easy to remove and adjust. In fact when I am making adjustments I turn the collar and the seat in opposite directions to get it done more quickly. I hope these are right, but I would give it a try. Sorry mine is assembled and at the roll cage shop or I would go pull a measurement got you. Quote Link to comment Share on other sites More sharing options...
RebekahsZ Posted March 16, 2014 Share Posted March 16, 2014 I'm so ready to see some timeslips on your orange car. Has it been down the track yet? I'm a big fan. Quote Link to comment Share on other sites More sharing options...
KyleG Posted March 16, 2014 Share Posted March 16, 2014 (edited) May as well put my engineering degree to some use here the thermal expansion coefficient for steel is 7.3 in^-6 / in * F So if you cool the 2" steel strut tube by 10 degrees F itl shrink 0.000146". The aluminum tube will expand a similarly small amount from heat. That's probably more than you really cared to know though Short answer, your not going to get 0.085" from heating/cooling. At most you will get a few thousandths of an inch. Here's a handy dandy calculator http://www.engineeringtoolbox.com/linear-thermal-expansion-d_1379.html Cheers! Edited March 16, 2014 by KyleG Quote Link to comment Share on other sites More sharing options...
mtnickel Posted March 16, 2014 Share Posted March 16, 2014 (edited) a1racing has 3 different sized tubes...these would fit I believe... http://shop.a1racing.com/cok12452-h.aspx they also have 7" sleeves if you want. Edited March 16, 2014 by mtnickel Quote Link to comment Share on other sites More sharing options...
Phantom Posted March 27, 2014 Share Posted March 27, 2014 (edited) Stony - a good interference fit is .001" for each inch of diameter. you would have to freeze the strut and then heat the aluminum collar to ridiculous temperatures to get the .085" size difference you need to get it to fit. If that were even possible (look up the coefficient of thermal expansion for aluminum)then the thread size on the collar wouldn't fit the nut because it was larger than originally designed. You would then have to machine the nut larger. Don't go there. Find one that is designed to first your strut. Edited March 27, 2014 by Phantom Quote Link to comment Share on other sites More sharing options...
stony Posted April 20, 2014 Author Share Posted April 20, 2014 Thanks for all the inputs rebekahsz check out my facebook page. clint stoneham. I have videos posted there. cant seem to get the link to work here. also stonehac on youtube. Quote Link to comment Share on other sites More sharing options...
RebekahsZ Posted April 20, 2014 Share Posted April 20, 2014 I'm old and still figuring Facebook out, but I just went thru whole YouTube channel. Wow! Beautiful car. In fact all your cars are awesome. Quote Link to comment Share on other sites More sharing options...
m1ghtymaxXx Posted April 21, 2014 Share Posted April 21, 2014 Would it even be safe to push the limits of an interference fit with heating and cooling? I would figure once everything cools, the internal stresses would be huge and leave the part prone to fatigue cracking down the road. Quote Link to comment Share on other sites More sharing options...
johnc Posted April 21, 2014 Share Posted April 21, 2014 Just buy the right size threaded tube and lower spring perch from a1racing. Quote Link to comment Share on other sites More sharing options...
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