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Big ends
+2
nomad
Gti-r dannyboy
6 posters
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3 Re: Big ends 11th September 2016, 5:52 pm
nomad
Admin
Where did you find it in the sump ???
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5 Re: Big ends 11th September 2016, 7:06 pm
PartyPete
the one star club
You found those in your sump??? It must have been rattling it's tits off?!?!
6 Re: Big ends 11th September 2016, 7:44 pm
Gti-r dannyboy
All the knocking started and killed the engine within half amile!!!
7 Re: Big ends 11th September 2016, 7:45 pm
Cosmic73
Whats the diameter?
Best case youve spun a rod shell,
Worst case you've spun a big end shell.
If its a big end shell, i reckon damage like that will mean a new block, and like Pete said, would sound like an 80's diesel.
Best case youve spun a rod shell,
Worst case you've spun a big end shell.
If its a big end shell, i reckon damage like that will mean a new block, and like Pete said, would sound like an 80's diesel.
8 Re: Big ends 11th September 2016, 8:03 pm
PartyPete
the one star club
If it's the big end the crank will be scrap
9 Re: Big ends 11th September 2016, 9:04 pm
Gostek
Events Organiser
Only 1 oil hole... me think big end
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10 Re: Big ends 12th September 2016, 4:34 pm
Gti-r dannyboy
Luckily this is a spare engine, i will have to strip it down over winter to investigate a little more.
11 Re: Big ends 12th September 2016, 4:47 pm
Mr B
gtir technician
Assume it been left in sump then after some investigation/tinkering as if found that in sump you would soon see where came from as a rod would be hanging off :-D
spun bearing in rod means rod is scrap & so is crank if journals beyond a regrind
Spun mains means new block, you can dick about with caps & line boring but never worth hassle if can get a decent block easily . Needs proper good looking at as had big failure possibly .
spun bearing in rod means rod is scrap & so is crank if journals beyond a regrind
Spun mains means new block, you can dick about with caps & line boring but never worth hassle if can get a decent block easily . Needs proper good looking at as had big failure possibly .
12 Re: Big ends 12th September 2016, 4:49 pm
Cosmic73
Fingers crossed the block and crank can be salvaged, 
13 Re: Big ends 12th September 2016, 5:04 pm
Mr B
gtir technician
Proper engine machinist can save a lot, line honing journals is skilled work & not many could it it to high enough standard want bother, cranks can be ground .25 & can go .50 but hard get bearings .50
with cost of machining, crank hardening treatment and ordering custom oversize/undersize bearings it way better pick up more junk 54C's and salvage what good .
Good spares getting harder come across though so finding proper engine machinist can be useful ...
with cost of machining, crank hardening treatment and ordering custom oversize/undersize bearings it way better pick up more junk 54C's and salvage what good .
Good spares getting harder come across though so finding proper engine machinist can be useful ...
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