<div dir="ltr"><div>I recall you initially had a problem with an incorrectly installed oil ring (overlapped instead of end-to-end). Sure sounds like that again since leak down and compression tests reveal nothing.</div><div><br></div><div>I have a hard time imagining valve guides could cause the massive blue smoke you're seeing - but a failed oil ring sure could.</div><div><br></div><div>Geo</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Oct 16, 2015 at 5:25 PM, Rye Livingston <span dir="ltr"><<a href="mailto:ryel@mac.com" target="_blank">ryel@mac.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div style="font-family:SFNSText,"Helvetica Neue",Helvetica,sans-serif">The mystery continues.</div><div style="font-family:SFNSText,"Helvetica Neue",Helvetica,sans-serif"><br></div><div style="font-family:SFNSText,"Helvetica Neue",Helvetica,sans-serif">First off my bad. It's clearly blue-ish smoke, not white. It's burning oil not water.</div><div style="font-family:SFNSText,"Helvetica Neue",Helvetica,sans-serif"><br></div><div style="font-family:SFNSText,"Helvetica Neue",Helvetica,sans-serif">So today I cleaned up the plugs and fired it up again to get it up to normal operating temperature, and the smoke was billowing down the street like police had been throwing out tear gas canisters. Your comment was if it lingers for a moment or three it's oil. This cloud is lingering for 10-20 plus seconds as it was rolling down the street.</div><div style="font-family:SFNSText,"Helvetica Neue",Helvetica,sans-serif"><br></div><div style="font-family:SFNSText,"Helvetica Neue",Helvetica,sans-serif">Got it warmed up and first did a leak down test. Rotated the engine to get each piston at the top of it's stroke with the values closed for ignition, then put 100 psi into each cylinder and 1, 3 and 4 held steady at 98psi. #2 held steady at 95psi. No issues uncovered.</div><div style="font-family:SFNSText,"Helvetica Neue",Helvetica,sans-serif"><br></div><div style="font-family:SFNSText,"Helvetica Neue",Helvetica,sans-serif">Next was a compression test. Engine still warm, throttle wide open, all four came up to 150 lbs plus 1-2 lbs. No issues uncovered.</div><div style="font-family:SFNSText,"Helvetica Neue",Helvetica,sans-serif"><br></div><div style="font-family:SFNSText,"Helvetica Neue",Helvetica,sans-serif">So our thoughts at this point is it can't be a head gasket if we're getting good compression numbers and good leak down test numbers.</div><div style="font-family:SFNSText,"Helvetica Neue",Helvetica,sans-serif"><br></div><div style="font-family:SFNSText,"Helvetica Neue",Helvetica,sans-serif">Additional info - When I bought this TR4a head for this rebuild, it had been serviced many years ago but never installed on an engine. The machine shop tore it down and installed new hardened valve seats and checked everything out - supposedly. I was told the valves, valve springs and valve guides were all good, but now we're thinking this whole thing could be related to bad valve guides.</div><div style="font-family:SFNSText,"Helvetica Neue",Helvetica,sans-serif"><br></div><div style="font-family:SFNSText,"Helvetica Neue",Helvetica,sans-serif">Not that this should matter, but I also installed a big bore kit so sleeves and pistons are all new.</div><div style="font-family:SFNSText,"Helvetica Neue",Helvetica,sans-serif"><br></div><div style="font-family:SFNSText,"Helvetica Neue",Helvetica,sans-serif">I expect the head will come off again but hope to zero in on the problem before dismantling it.</div><div style="font-family:SFNSText,"Helvetica Neue",Helvetica,sans-serif"><br></div><div style="font-family:SFNSText,"Helvetica Neue",Helvetica,sans-serif">Regards,</div><div style="font-family:SFNSText,"Helvetica Neue",Helvetica,sans-serif">Rye</div><div style="font-family:SFNSText,"Helvetica Neue",Helvetica,sans-serif"><br></div><div style="font-family:SFNSText,"Helvetica Neue",Helvetica,sans-serif"><br></div><div style="font-family:SFNSText,"Helvetica Neue",Helvetica,sans-serif"><br></div><div style="font-family:SFNSText,"Helvetica Neue",Helvetica,sans-serif"><br>On Oct 15, 2015, at 07:46 PM, ptegler <<a href="mailto:ptegler@verizon.net" target="_blank">ptegler@verizon.net</a>> wrote:<br><br></div><div style="font-family:SFNSText,"Helvetica Neue",Helvetica,sans-serif"><blockquote type="cite"><div>seconded...<br> blue is 'burning' oil, not just super heated oil blowby which is usually white.<br>If it dissipates almost immediately it's water, if it lingers for a moment or three.... its oil<br><br>ptegler<br><br><div>On 10/15/2015 10:51 AM, Brad Kahler wrote:<br></div><blockquote type="cite"><div dir="ltr">Lots of white smoke doesn't always indicate water/coolant. On my TR4 engine that had been freshly rebuilt when I bought it I had billowing clouds of white smoke. After several head gasket changes I finally realized that the new liners (liner & piston kit) had not been cross hatched so the rings didn't seat. This allowed for massive amounts of oil to be sucked up and out the exhaust. Result was white smoke.<div><br></div><div>So the question is, were the cylinder liners cross hatched so the rings would seal?</div><div><br><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Oct 15, 2015 at 9:15 AM, Chris Simo <span dir="ltr"><<a href="mailto:ccsimonsen@gmail.com" target="_blank">ccsimonsen@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid"><div dir="ltr">Is that water or oil? Lots of white smoke would indicate to me a blown head gasket and water on the plugs.<div><br></div><div>Did you replace the head gasket with a new one when you fixed the oil ring? Probably not recommended, but I've reused them (1x) in the past, but always painted them with the copper coat head gasket paint.<br><div><br></div><div>I've blown head gaskets that leaked water into the pistons only -- no water in the oil. But you may want to check your oil for contamination.</div></div><div class="gmail_extra"><br><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid"><br></blockquote></div></div></div><br><br><br></blockquote></div><br></div></div></div><br><fieldset></fieldset><br><pre style="white-space:pre-wrap!important">** <a href="mailto:triumphs@autox.team.net" target="_blank">triumphs@autox.team.net</a> **
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