B.b.p builders Posted September 13, 2014 Report Share Posted September 13, 2014 This might be a dbl. but I think I forgot to post the last one, I'm thinking, as I can't find it. Anyway, is it wrong to reuse low hour pistons when haveing a motor ported? Cheetah pistons are expensive, actually the cost of shipping the motor both ways, expensive. So I'm wondering if reusing the low hour pistons with fresh rings is something other guys would do? Personally I'm thinking I should just put fresh pistons in it, but if it's just waiting my $, well I'm not into that! Also would a builder even port the motor, put it back together and tune it, with a used set of pistons in it? Wondering opinions on this. If this is a dbl sorry, I thought I posted this, but I went looking to see if anyone replied yet and can't even find the post? So I'm guessing I didn't. Quote Link to comment Share on other sites More sharing options...
Leadmonster Posted September 13, 2014 Report Share Posted September 13, 2014 man if you have low hours on it, just make sure the pistons go back in the same way if your on a budget . your just porting it . clean reassemble. shouldn't be a prob at all. you don't have to put new pistons in every time you take the jugs off. but I do not know if you should put new rings in. mabey someone else can answer that one. id say fresh bore/plate for new rings. idk Quote Link to comment Share on other sites More sharing options...
special06shee Posted September 13, 2014 Report Share Posted September 13, 2014 Id let your builder decide that for ya. Quote Link to comment Share on other sites More sharing options...
registered user Posted September 13, 2014 Report Share Posted September 13, 2014 shouldnt be a problem reusing them. for the hell of it you might just throw a micrometer on em to be sure nothing funny happened like a collapsed skirt or something like that but other wise i would reuse them. check for cracks also. wisecos are pretty tuff though Quote Link to comment Share on other sites More sharing options...
trickedcarbine Posted September 13, 2014 Report Share Posted September 13, 2014 Try coating them 1 Quote Link to comment Share on other sites More sharing options...
registered user Posted September 13, 2014 Report Share Posted September 13, 2014 why would you put a coating on ? sounds like his pistons are a few hrs old, took everything apart for some cylinder work and wants to throw the pistons back in. i dont see where theres any problem. hell i would probly reuse the rings also if theyre only a couple hrs old. Quote Link to comment Share on other sites More sharing options...
sheerider11 Posted September 14, 2014 Report Share Posted September 14, 2014 Try coating themLike that pandolium?I think that's what it's called. Quote Link to comment Share on other sites More sharing options...
trickedcarbine Posted September 14, 2014 Report Share Posted September 14, 2014 This is who I've been using. http://www.line2linecoatings.com I've had great results on two motors with it. They actually prefer coating pistons that have been broken in so they can build up your skirts after they begin to collapse slightly after break in. Take a peek. Helps with lubricity and aids in defense against tuning error. They can work off suggested tolerances but prefer to have actual cylinder measurements. 1 Quote Link to comment Share on other sites More sharing options...
RadarRacing Posted September 14, 2014 Report Share Posted September 14, 2014 I would prefer to keep the old pistons as a spare and use new but have reused pistons after porting or cha ges to the motor many times. I have changed base gasket thickness as well as domes , changed porting and use the same pistons with no problems. The shape of the bore and the piston break in is important and using a broke in set of rings is safer with new porting than new ones if you ask me. Quote Link to comment Share on other sites More sharing options...
registered user Posted September 14, 2014 Report Share Posted September 14, 2014 coating is one of them things that its the owners preference. i havent had much luck with that stuff but i never tried the line2line stuff. got a few wisecos sitting around with that armorglide crap they put on. first thing i noticed is the thickness is never consistent. box says you should have about .0025" clearance but ive measured several new ones and theres .001 difference between coating thickeness. other thing i noticed is it dont last that long before it wears down. so if you have .003 wall clearance out of the box, it wont be long before you have .005 or more clearance when the stuff wears down. seems like the last cr500 i tore down had .006 wall clearance and the engine didnt have many hrs on it, maybe 20hrs im guessing. pretty sure it had about .003 when i put it together if i recall correct. for experiment im gonna take one of the old wisecos i have and see if i can remove that coating somehow. maybe with wire wheel or whatever. because i have new project and honestly dont want that wiseco armor glide crap on it so im hoping i can remove it before i install the piston. couple years ago i tried swaintech on a old piston to bring the clearance back to acceptable range but never ran the engine long enough to know if it holds up or not. it may offer a buffer against tuning error but i only seized 1 engine in my life so ill be fine without it Quote Link to comment Share on other sites More sharing options...
trickedcarbine Posted September 14, 2014 Report Share Posted September 14, 2014 They are all similar but I think the L2L stuff has a bit different approach I terms of application. I won't go claiming huge power increases, but reliability goes way up. Quote Link to comment Share on other sites More sharing options...
Coupelx Posted September 14, 2014 Report Share Posted September 14, 2014 Fuck it, run them bitches. 1 Quote Link to comment Share on other sites More sharing options...
jbooker82 Posted September 14, 2014 Report Share Posted September 14, 2014 I use Swain Tech to coat pistons. Have them in my Banshee and Raptor. Quote Link to comment Share on other sites More sharing options...
trickedcarbine Posted September 15, 2014 Report Share Posted September 15, 2014 What type of thickness to they apply? Quote Link to comment Share on other sites More sharing options...
jbooker82 Posted September 15, 2014 Report Share Posted September 15, 2014 They claim 0.0008 is the normal thickness but they can use a thick application to add up to .004 on some pistons to decrease clearances. www.swaintech.com is their web page. Quote Link to comment Share on other sites More sharing options...
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