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Gtir Motorsport club » Tech room » Help and Advice » Turbo

Turbo

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51Turbo - Page 3 Empty Re: Turbo on 8th March 2015, 9:24 pm

GTI-R US

GTI-R US
Management
Management
@GTI-R US wrote:

I have a feeling that is part of the timing chain tensioner which works on sprung oil pressure, not 100% on that but will have a look at a tensioner on Monday to see if I'm a genius or a geek lol




^^^^
Uhuhum! Where's my fookin rep point seeing as I got it first proving I'm an absolute modest genius Laughing 

Marky glad you love my nails Laughing actually had a day off today and took the missus out but little clare spotted my minging hands and said you ain't going out with mum like that so she spent an hour making my hands look like girls hands lol, then let me go out:face:


Danny.... sorry to say fella
 fella but you have biggum troubles there, pull it apart as things are very wrong with that engine


_________________
GTI-R-US.co.uk
 In association with
Torque Of The South Motorsport

Nissan Performance & Tuning Centre
Services provided

Forge Engine rebuilds to specification
Body Restoration, Fabrication, Repair
Paint refinishing facilities
Ecu re-mapping-Performance upgrades
Auto Diagnostics, Injector cleaning  
Race & Suspension setup
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Full workshop facilities
http://www.gti-r-us.co.uk www.force500.com

52Turbo - Page 3 Empty Re: Turbo on 8th March 2015, 9:36 pm

buckym120

buckym120
Would that restrictor prevent oil from flowing around the block, or due to the massive hole in the pick up shit has now been sucked through the system and blocked something?

Just trying to see if the block /head have been starved from oil or just the tubby

53Turbo - Page 3 Empty Re: Turbo on 8th March 2015, 9:47 pm

GTI-R US

GTI-R US
Management
Management
in a nutshell yes it would


There's been a major failure somewhere and really that engine needs to be inspected thoroughly to determine what's been going on, definately would not try run it even if you replaced the tensioner


_________________
GTI-R-US.co.uk
 In association with
Torque Of The South Motorsport

Nissan Performance & Tuning Centre
Services provided

Forge Engine rebuilds to specification
Body Restoration, Fabrication, Repair
Paint refinishing facilities
Ecu re-mapping-Performance upgrades
Auto Diagnostics, Injector cleaning  
Race & Suspension setup
General Servicing, Mots, tyre fitting
Full workshop facilities
http://www.gti-r-us.co.uk www.force500.com

54Turbo - Page 3 Empty Re: Turbo on 8th March 2015, 10:02 pm

nomad

nomad
Admin
Admin
I stole it bob Suspect ..... but i did put up pretty pictures and everything .... Laughing
ive gave you a rep point out of sympathy for only having 12 lol!


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55Turbo - Page 3 Empty Re: Turbo on 8th March 2015, 10:08 pm

Mr B

Mr B
gtir technician
gtir technician
^^ It's not the tensioner its the oil spray nozzle that sits above the crank sprocket so Nomad gets the Rep as his pic & description spot on :-P
I don't know how much difference it will make to oil flow once it out but expect will reduce flow to some degree as more will flow out of that gallery without it.
Assume over pressure such as dirt in oil ways & prv stuck could of caused it.
Is possible the spray nozzle damaged oil pump housing if got thrown around by chain & sprocket before falling down to sump, so if oil housing cracked or punctured you would have serious oil feed issue.
Like bobs said & we mention before, it needs proper looking at to see what going on & what needed put it right.

56Turbo - Page 3 Empty Re: Turbo on 8th March 2015, 10:14 pm

Mr B

Mr B
gtir technician
gtir technician
@nomad wrote:ive gave you a rep point out of sympathy  for only having 12 lol!
Ooo 13 rep points, that unlucky ...
Think you need some negative rep Nomad as you catching me up Sad

57Turbo - Page 3 Empty Re: Turbo on 8th March 2015, 10:26 pm

nomad

nomad
Admin
Admin
I dont think il ever catch you up b ..... you have far more consturctive answers than my little pea brain can store Laughing
and i already have a negative rep point.... not sure for what though really sad


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"Official post whore" and all round superhero....

58Turbo - Page 3 Empty Re: Turbo on 8th March 2015, 10:53 pm

pulsarmoley

pulsarmoley
moderator
moderator
@nomad wrote:I dont think il ever catch you up b ..... you have far more consturctive answers than my little pea brain  can store  Laughing  
and i already have a negative rep point.... not sure for what though really sad

Reckon it was Bob as he's jealous your ahead of him in points Razz

I'll earn myself some more once I get my rebuild started and put up some 'how to's' such as "how to fit a wheel nut" Laughing


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59Turbo - Page 3 Empty Re: Turbo on 8th March 2015, 11:37 pm

nomad

nomad
Admin
Admin
We could do with some more how to's Wink


_________________
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60Turbo - Page 3 Empty Re: Turbo on 9th March 2015, 5:22 am

Gti-r dannyboy


Can i note last time engine was running it was running Sweet as a nut just didnt have any boost!!

61Turbo - Page 3 Empty Re: Turbo on 9th March 2015, 5:35 am

Gti-r dannyboy


To give it the best chance off surviving does anyone know a decent Company that could look at the engine for me.willing to travel long distance?

62Turbo - Page 3 Empty Re: Turbo on 9th March 2015, 7:06 am

johnny gtir

johnny gtir
moderator
moderator
Bob not got time to sort it ?

63Turbo - Page 3 Empty Re: Turbo on 9th March 2015, 7:13 am

Gti-r dannyboy


I will call him later, but i know he is flat out with work.

64Turbo - Page 3 Empty Re: Turbo on 9th March 2015, 8:50 pm

GTI-R US

GTI-R US
Management
Management
try giving me a bell tomorrow danny if you want

if you cant get through just leave a voicemail and i will call you back as soon as get a chance


_________________
GTI-R-US.co.uk
 In association with
Torque Of The South Motorsport

Nissan Performance & Tuning Centre
Services provided

Forge Engine rebuilds to specification
Body Restoration, Fabrication, Repair
Paint refinishing facilities
Ecu re-mapping-Performance upgrades
Auto Diagnostics, Injector cleaning  
Race & Suspension setup
General Servicing, Mots, tyre fitting
Full workshop facilities
http://www.gti-r-us.co.uk www.force500.com

65Turbo - Page 3 Empty Re: Turbo on 26th March 2015, 7:33 pm

GTI-R US

GTI-R US
Management
Management
ok just for everyones interest we got this car in now and have finally got to the bottom of whats happened to it

was running a 3076r tubby initially which went kaput but turns out prior to this happening a boost pipe blew off on the car which then overspooled the turbo and then suffered bearing damage but car was nursed back with turbo not running and this is when I believe the damage in the below pics was caused.
I believe the oil restrictor blew out of the front of the block due to being hugely over pressurised as oil galleries have loads of swarf and debris picked up from turbo collapse.
also there is oil showing around the port on no1 cylinder (compressions are good though) so I would hazard a guess that debris has been caught on oil control rings allowing oil blowby.

pics of where restrictor came from (lucky it never lifted chain from sprocket)
Turbo - Page 3 Th_001_zps2ow8uhjz

heres pic of oil filter which we cut open with a chisel, as you can see it was full of metal fragments.
also pic of bits of debris just from the end of oil gallery where restrictor was blocked and blew out under pressure (never seen this happen before)
Turbo - Page 3 Th_002_zpsu3t5axno

Turbo - Page 3 Th_004_zpsxxgoazfs

last but not least the wet oil on exhaust port on no1 cylinder
Turbo - Page 3 Th_003_zpsokmhgd7j


_________________
GTI-R-US.co.uk
 In association with
Torque Of The South Motorsport

Nissan Performance & Tuning Centre
Services provided

Forge Engine rebuilds to specification
Body Restoration, Fabrication, Repair
Paint refinishing facilities
Ecu re-mapping-Performance upgrades
Auto Diagnostics, Injector cleaning  
Race & Suspension setup
General Servicing, Mots, tyre fitting
Full workshop facilities
http://www.gti-r-us.co.uk www.force500.com

66Turbo - Page 3 Empty Re: Turbo on 26th March 2015, 7:59 pm

Mr B

Mr B
gtir technician
gtir technician
Bit unlucky to kill his replacement engine like that .
I've never seen those chain gallery squirter come out but machinist I use is bit of a SR fan & he seen it before, have a habit of knocking out timing or jamming against pump casing cracking it. He adds an extension on the end so it almost touching the chain cover housing thus can not fall out, obviously don't fix the issue of why have over pressure but could save engine from further expensive damage .

67Turbo - Page 3 Empty Re: Turbo on 26th March 2015, 8:22 pm

gtir_pimp

gtir_pimp
probably because the shit from the turbo got clogged up in or just before the restrictor blocking it and with the oil pump still going and oil not being able to go anwhere just forced it out?

wet cylinder isnt good either.

whats the plan then dannyboy?

68Turbo - Page 3 Empty Re: Turbo on 26th March 2015, 11:41 pm

GTI-R US

GTI-R US
Management
Management
@Mr B wrote:Bit unlucky to kill his replacement engine like that .
I've never seen those chain gallery squirter come out but machinist I use is bit of a SR fan & he seen it before, have a habit of knocking out timing or jamming against pump casing cracking it. He adds an extension on the end so it almost touching the chain cover housing thus can not fall out, obviously don't fix the issue of why have over pressure but could save engine from further expensive damage .


First time I've seen one of those come out in 11 years of working on these but just goes to show that you can never rule out the unexpected with anything lol, and yes he was extremely lucky that it never lifted the chain off the sprocket

We're bolting the engine back together aron but not gonna run his brand new 3076 on her so he's sending me down his old turbo.
It worries me that if there is still debris left in the oil galleries that it could happen again so if it does at least he's not going to destroy an expensive turbo, better to ruin a secondhand stock one.
Really the whole thing needed stripping completely, cylinder and piston on no1 need checking and the oil galleries need thoroughly cleaning. 

We've cleaned out everything as best we can though, checked crank, bigend bearings and fitting a replacement oil pump and filter so fingers crossed that it's enough and there's no real damage but I'm not that optimistic with this one I'm afraid.


_________________
GTI-R-US.co.uk
 In association with
Torque Of The South Motorsport

Nissan Performance & Tuning Centre
Services provided

Forge Engine rebuilds to specification
Body Restoration, Fabrication, Repair
Paint refinishing facilities
Ecu re-mapping-Performance upgrades
Auto Diagnostics, Injector cleaning  
Race & Suspension setup
General Servicing, Mots, tyre fitting
Full workshop facilities
http://www.gti-r-us.co.uk www.force500.com

69Turbo - Page 3 Empty Re: Turbo on 27th March 2015, 12:09 am

Mr B

Mr B
gtir technician
gtir technician
^ yeh that wants stripping & cleaning, will just end up more expense any other way.
Got away lucky seems didn't catch chain & also lucky if crank good, seems shame not make effort strip & clean it really as not hard unless find more problems.
Normal reason for the jet pop out is due to relief valve sticking but like you say here it was swarf clogging, quite easy mod the standard jet so they can not fall out but like you it not something I seen or was even aware of until this came up .

70Turbo - Page 3 Empty Re: Turbo on 4th April 2015, 4:22 pm

Gti-r dannyboy


Update, well bobs done is best and cleaned the engine the best he can, picked it up this morning and drove it 200+ miles home, so far so good, just have to see what happens in the the next month or so. Can i also thank bob for fitting me in as he is super busy, top man

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