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Turbo Twinky moke rip-down & check
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Author:  TheMiniMan [ Mon Oct 08, 2012 10:35 pm ]
Post subject:  Turbo Twinky moke rip-down & check
well,,, as it happens,,, the old turbo twinky moke that we did a few years ago has had a moment... there was a little lack of "checking the oil level" & it`s done the turbo in (Naughty Michael)

sooo,,, while it was here i decided to rip the engine out & rip it apart for a little bo-peep inside her

& to my amazement there was absolutely nothing wrong with the thing

it was all good,,, no Sh!t... & yep i`m shocked too :-) ,,, for an engine that`s been running around for quite a few years with over 160hp on tap,,, & been used hard & abused even harder, not to have anything wrong with it,,, """especially after it`s been run low on oil""" just has me a little choofed to say the least

this thing really has had a hammering

so,,, yeah, i`m quite the happy chappy :-)

i`ve taken a video of the internals immediately after we stripped it down & i also have my trusty witness Archie to back this up if anyone wants to have a go :-)

so,,, just for the sake of it & making it all nice again i`ve thrown a set of rings & bearings, gaskets & seals & an oil-pump at it & chucked her all back together

it will be going back in the hole this week & a we have a new turbo that is in the process of clocking & fitting onto it as the old one went kaput

we will double check the tune (simple ign timing & fuel check & adjust) & it should be all good to go again

Pretty happy i am :-) ;-) :-)
Author:  willy [ Mon Oct 08, 2012 11:52 pm ]
Post subject: 
I DON'T BELIEVE YOU!


(I do, I just want to see the video)



Great to hear another strong ReadSpeed A-series going strong 8)
Author:  kirby [ Tue Oct 09, 2012 2:35 pm ]
Post subject: 
What sort of oil was being used to handle a turbo and keep it alive despite lack of oil. Not trying to start something just curious.
Author:  69k1100 [ Tue Oct 09, 2012 4:21 pm ]
Post subject: 
That's the point, the turbo gave in before the engine did. Mabey the level dipped below the oil feed for the turbo. A second of 0psi at the turbo will ruin it.
Author:  awdmoke [ Tue Oct 09, 2012 4:28 pm ]
Post subject: 
Oil feed for the turbo is the same as for the rest of the bearings in the engine - the oil pump. That said, with the high RPM of the turbo, the bearings would be shot much faster than at the big end.
Author:  TheMiniMan [ Tue Oct 09, 2012 5:21 pm ]
Post subject: 
yeah i was really worried about the bearings , of course, & that`s why i stripped it down really,,, not just a curiosity thing but a precautionary thing mainly

& i`ve no idea what oil he used but i`ll ask him tomorow

the turbo will be re-built (probly go onto one of my engines) :-) so it wasn`t "Totally" rooted

edit--> the bearings did show obvious signs of "usage" :-) so it was happy to accept new bearings, of course, i wouldn`t have put them back in, but they could have stayed in there a while longer too, if you know what i mean, so it`s just a std issue freshen up & hope all will be well,,, crossing fingers :-)
Author:  Morris 1100 [ Tue Oct 09, 2012 5:28 pm ]
Post subject: 
How did the pistons look? Any signs of detonation or overheating?
Author:  TheMiniMan [ Tue Oct 09, 2012 8:03 pm ]
Post subject: 
Morris 1100 wrote:
How did the pistons look? Any signs of detonation or overheating?


none, zero, ziltch, we learnt that part the hard way already :-(

there was absolutely no carbon past the first ring, on any of em, all the rings look sweet-as under a magnifying glass, near new looking pistons, just lovely coloured :-)

it`s all back together & back in the moke now, & hope to fire her back up again late in the week maybe, cross fingers
Author:  Morris 1100 [ Tue Oct 09, 2012 8:10 pm ]
Post subject: 
Sounds like it was working very well. Congrats!

Maybe an accumulator on the turbo oil supply? (So that the turbo will keep spinning while the main bearings are starving! :lol: )

The last turbo I was involved with had an oil accumulator on the supply line. If the motor suddenly stopped the oil would keep feeding for a minute or two.
Author:  TheMiniMan [ Fri Oct 12, 2012 4:17 pm ]
Post subject: 
ok we got it running now...& yes it sounds all sweet & yummy too :-)

problem is that i`m off on 2 weeks holiday in Byron bay now so no time to tune & tweek things

& the video we took of the engine being ripped apart has been wiped by the optus phone repair company ;-( Really bummed because that wasn`t the only video & we also lost a whole pile of photos of the work that we`d been doing on plenty of other customers cars too,,, so not very happy with samsung S2 phones or Optus at the moment :-(

so ,,, have a good time while i`m away, no bickering & see you all when i`m back

:-)
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