geoffbeaumont Posted September 10, 2007 Share Posted September 10, 2007 white90 70mph on the M5 then load noises/loss of power/lots of smoke then no go 3 days later sees the 90 back up and running much thanks to good mates. slave cylinder/gearbox mounts/lift pump were just a few of the extras needing attention back to normal power levels and consumption figures. diagnosis showed this: So what happened to it? Quote Link to comment Share on other sites More sharing options...
DSN Posted September 10, 2007 Share Posted September 10, 2007 So is it all ready for this weekend? Sounds like a bit more preparation work than you had planned for. Glad to hear its running again. Quote Link to comment Share on other sites More sharing options...
white90 Posted September 10, 2007 Share Posted September 10, 2007 Geoff melted number 4 piston threw loads of oil into the breather system and died on its ar5e Dan all fixed and ready to go replaced the entire engine just a hub seal to fix tomorrow Quote Link to comment Share on other sites More sharing options...
geoffbeaumont Posted September 10, 2007 Author Share Posted September 10, 2007 Eek! Freak thing, or was there an obvious reason for it? Quote Link to comment Share on other sites More sharing options...
white90 Posted September 10, 2007 Share Posted September 10, 2007 no idea suggested injector problem, but they were less than 3 yrs old. probably a feature of L/R Quote Link to comment Share on other sites More sharing options...
Bull Bar Cowboy Posted September 10, 2007 Share Posted September 10, 2007 That’s a bit unfortunate Tony ……….. but at least you seem to have effected repairs quite quickly. Please don’t take this the wrong way ………. Its only an idea…… What was the EGT ? ……………….. I am still not convinced that the 300 can withstand extra boost mods that shove up the EGT by a fair few degrees …………….maybe the short term is OK, but what you have witnessed maybe the longer term damage ? I hope I am wrong, but that is the sort of evidence I would be looking for. Ian Quote Link to comment Share on other sites More sharing options...
white90 Posted September 11, 2007 Share Posted September 11, 2007 Ian EGT max was 694 now max EGT at totally standard settings is 634 when it went bang it was 670ish. running 18psi with a bit of extra fueling. the cause wasn't obvious so your thoughts are most welcomed repairs took 2 days and a bit of tidying up time today. to collect parts etc the piston was fairly damaged/melted squish area and the side damage was the cause of the demise. my old engine is to be resurrected with +20 over size pistons a rebore etc the big ends had gone through the white metal into the copper. parts etc so far have come in at £320 with some machine work to go Quote Link to comment Share on other sites More sharing options...
Porny Posted September 11, 2007 Share Posted September 11, 2007 Looks like either one of two things... Leaking injector/injector fault.. or a coolant leak. You can get a similar fault when coolant is allowed to drip into a cylinder, but more likely to be a injector problem. I'd get the injectors checked!!! Ian Quote Link to comment Share on other sites More sharing options...
will_warne Posted September 11, 2007 Share Posted September 11, 2007 IanEGT max was 694 now max EGT at totally standard settings is 634 when it went bang it was 670ish. running 18psi with a bit of extra fueling. the cause wasn't obvious so your thoughts are most welcomed repairs took 2 days and a bit of tidying up time today. to collect parts etc the piston was fairly damaged/melted squish area and the side damage was the cause of the demise. my old engine is to be resurrected with +20 over size pistons a rebore etc the big ends had gone through the white metal into the copper. parts etc so far have come in at £320 with some machine work to go Sorry to hear you've been having problems Tony. At under 700 degrees your EGT isn't excessivly high - I could get 650 fairly easily with a standerd 2.8 TGV. Quote Link to comment Share on other sites More sharing options...
will_warne Posted September 11, 2007 Share Posted September 11, 2007 P.S. are you planning to do anything else to the engine now its appart? Quote Link to comment Share on other sites More sharing options...
JimAttrill Posted September 11, 2007 Share Posted September 11, 2007 Yes, anything under 700c will not cause damage normally. We had a tdi recently, not tweaked but bits of the piston had melted and stuck to the head. Much to our amazement the head cleaned up 100%. Quote Link to comment Share on other sites More sharing options...
Bull Bar Cowboy Posted September 11, 2007 Share Posted September 11, 2007 my old engine is to be resurrected with +20 over size pistons a rebore etcthe big ends had gone through the white babbit metal into the copper. parts etc so far have come in at £320 with some machine work to go Dont skimp on the machining .................. I can throughly recommend the shop that did my liners , but they are not local (Winchester)............ I guess I would expect to pay about £300 ish for the Crank regrind, Rebore, and head skim. Yes, I would have expected the shells to be showing copper at 143K ! Again, for longevity, use the best possible components for the build ................. shells from Glacier or Vandervell ............... pistons, I guess. will be OEM as will the rings ............. I'm a big fan of chilled Iron moly chrome rings ............. but then again I'm a pertrolhead and not an oil burner guru ! Ian Quote Link to comment Share on other sites More sharing options...
JST Posted September 11, 2007 Share Posted September 11, 2007 Tony, glad to hear its all back together and good to go for the weekend. spk later Quote Link to comment Share on other sites More sharing options...
Exmoor Beast Posted September 12, 2007 Share Posted September 12, 2007 bad luck Tony what a pain, glad its sorted. Wil Quote Link to comment Share on other sites More sharing options...
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