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Gtir Motorsport club » Tech room » Help and Advice » Big ends

Big ends

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1Big ends Empty Big ends on 11th September 2016, 5:23 pm

Gti-r dannyboy


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2Big ends Empty Re: Big ends on 11th September 2016, 5:25 pm

Gti-r dannyboy


Is this a part of the big end shells?

3Big ends Empty Re: Big ends on 11th September 2016, 5:52 pm

nomad

nomad
Admin
Admin
Where did you find it in the sump ???


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4Big ends Empty Re: Big ends on 11th September 2016, 6:01 pm

Gti-r dannyboy


Yeah

5Big ends Empty Re: Big ends on 11th September 2016, 7:06 pm

PartyPete

PartyPete
the one star club
the one star club
You found those in your sump??? It must have been rattling it's tits off?!?!

6Big ends Empty Re: Big ends on 11th September 2016, 7:44 pm

Gti-r dannyboy


All the knocking started and killed the engine within half amile!!!

7Big ends Empty Re: Big ends on 11th September 2016, 7:45 pm

Cosmic73

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.

8Big ends Empty Re: Big ends on 11th September 2016, 8:03 pm

PartyPete

PartyPete
the one star club
the one star club
If it's the big end the crank will be scrap

9Big ends Empty Re: Big ends on 11th September 2016, 9:04 pm

Gostek

Gostek
Events Organiser
Events Organiser
Only 1 oil hole... me think big end


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10Big ends Empty Re: Big ends on 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.

11Big ends Empty Re: Big ends on 12th September 2016, 4:47 pm

Mr B

Mr B
gtir technician
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 .

12Big ends Empty Re: Big ends on 12th September 2016, 4:49 pm

Cosmic73

Cosmic73
Fingers crossed the block and crank can be salvaged, Smile

13Big ends Empty Re: Big ends on 12th September 2016, 5:04 pm

Mr B

Mr B
gtir technician
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 ...

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