josef9177 Posted February 18, 2015 Author Report Share Posted February 18, 2015 I called Chris.. He said 4000!! So asked again what 4000 ? He said .004 Quote Link to comment Share on other sites More sharing options...
trickedcarbine Posted February 18, 2015 Report Share Posted February 18, 2015 .(tenths)(hundredths)(thousandths) Quote Link to comment Share on other sites More sharing options...
sheerider11 Posted February 18, 2015 Report Share Posted February 18, 2015 I called Chris.. He said 4000!! So asked again what 4000 ? He said .004So what's the issue? Quote Link to comment Share on other sites More sharing options...
josef9177 Posted February 18, 2015 Author Report Share Posted February 18, 2015 Well I'm just confused...it's the first time I'm hearing a manufacturer recommended such a big clearence for a cast piston in an aircooleds motor. Quote Link to comment Share on other sites More sharing options...
josef9177 Posted February 18, 2015 Author Report Share Posted February 18, 2015 I was expecting a recommended clearence between .0012 to .0016" Quote Link to comment Share on other sites More sharing options...
nastyracing Posted February 18, 2015 Report Share Posted February 18, 2015 Who cares what you thought ... Listen to the man ! R motors fly w these Pistons in them . Quote Link to comment Share on other sites More sharing options...
sheerider11 Posted February 18, 2015 Report Share Posted February 18, 2015 Is this a different brand? Have you always used WSM Quote Link to comment Share on other sites More sharing options...
josef9177 Posted February 18, 2015 Author Report Share Posted February 18, 2015 I bought this for the next rebore..First time buying wsm. Now on tkrj rd 350 LC cast piston with .0012" clearence Quote Link to comment Share on other sites More sharing options...
BANSHEE HP Posted February 18, 2015 Report Share Posted February 18, 2015 Run it a .0015 It'll seize up tighter than tobys ass. Quote Link to comment Share on other sites More sharing options...
blowit Posted February 18, 2015 Report Share Posted February 18, 2015 You will want to use factory clearances for these pistons. There is no reason to set them up any looser. However, it is always important to run an engine in AND ALWAYS warm up an engine before reaming it. See it all the time where a guy fires up and rips, then cold seizes the engine and blames the clearances. Remember that a new engine will run HOTTER until run in good. This is due to extra friction of the new piston and bore. This is why you need to heat cycle the engine. If memory serves, .0025 right from the book. Remember also that casted pistons will setup with tighter clearance than forged pistons. They have a little more density and silica as well as a little more uniform thermal expansion. Brandon Mull Engineering 1 Quote Link to comment Share on other sites More sharing options...
registered user Posted February 19, 2015 Report Share Posted February 19, 2015 good advice ^ Quote Link to comment Share on other sites More sharing options...
sleeper06 Posted February 20, 2015 Report Share Posted February 20, 2015 Nasty, there not the same Pistons I put in yours and robs Quote Link to comment Share on other sites More sharing options...
sleeper06 Posted February 20, 2015 Report Share Posted February 20, 2015 On s side note I know there are RD forums I've been on them I just aquired one from a friend Quote Link to comment Share on other sites More sharing options...
sheerider11 Posted February 20, 2015 Report Share Posted February 20, 2015 Nasty, there not the same Pistons I put in yours and robsOurs are better. Quote Link to comment Share on other sites More sharing options...
josef9177 Posted February 20, 2015 Author Report Share Posted February 20, 2015 http://pages.ebay.com/link/?nav=item.view&alt=web&id=380941837127 I think you all are talking out of ur experience from LC engines..how many of u have actually used it on ac rd? Quote Link to comment Share on other sites More sharing options...
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