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| Home > Help Needed / General Tech Chat > Something went on the RR--blue smoke from the crankcase vents | |||||||
 1060 Posts Member #: 588 Post Whore Delaware, USA |
20th Jun, 2007 at 06:34:38pm
Halfway through the rolling road session and blue smoke started pouring out of the crankase vents...
website:- http://www.terryhunt.co.uk
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Site Admin  8506 Posts Member #: 16 Sold the turbo and seeing what the C20XE can do! Near Lincoln |
20th Jun, 2007 at 06:37:00pm
bit weird to be honest. are the breathers clear?
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612 Posts Member #: 414 Post Whore Dalbeattie Scotland |
20th Jun, 2007 at 06:41:20pm
Piston:(
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1060 Posts Member #: 588 Post Whore Delaware, USA |
20th Jun, 2007 at 06:45:20pm
Unfortunately Piston sounds about right....
Edited by Turbo Tel on 20th Jun, 2007. website:- http://www.terryhunt.co.uk
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Forum Mod  4828 Posts Member #: 154 Post Whore Midlands |
20th Jun, 2007 at 07:55:30pm
number 4's usually the first one to go aswell from experience. On 20th Oct, 2015 Tom Fenton said:
Well here is the news, you are not welcome here, FUCK OFF. |
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 140 Posts Member #: 1367 Advanced Member Cape Town, South Africa |
20th Jun, 2007 at 07:58:05pm
Your engine was recently rebuilt wasnt it? |
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1060 Posts Member #: 588 Post Whore Delaware, USA |
20th Jun, 2007 at 08:11:23pm
On 20th of Jun, 2007 at 07:58pm CR# said:
Your engine was recently rebuilt wasnt it? And very recently ripped apart as well!! Well, got the head off and I cant see any thing on the piston or bore, no holes or signs of overheating, ditto the head... but CR is down so somethings up. Its probably the compression ring but before I get into that I'm going to get a spring compressor and take the valves out. The RR guys theory was that the valve guide is shot which causes the valve to wobble, the seal will be bad, CR down and sends hot gasses up through the guide hence the smoke in crankcase but not in the exhaust pipe Hey I have to be optomistic here maybe--- just maybe---he's right... but my bets on a compression ring despite the wet dry test.. website:- http://www.terryhunt.co.uk
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Forum Mod 10980 Posts Member #: 17 ***16*** SouthPark, Colorado |
20th Jun, 2007 at 08:52:50pm
I will throw you a wet fish here, as a hopefull cause of your woes.
On 17th Nov, 2014 Tom Fenton said:
Sorry to say My Herpes are no better Ready to feel Ancient ??? This is 26 years old as of 2022 https://youtu.be/YQQokcoOzeY |
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 4360 Posts Member #: 1459 En-suite user Braintree, Essex |
20th Jun, 2007 at 09:09:14pm
Sounds terminal chap! I really hope otherwise though :) On 19th Jan, 2010 wil_h said:
I would start the furthest place from the finish. On 24th Mar, 2012 apbellamy said:
I feel all special knowing that I've given your mum my wood. Been neglecting Turbo'd 'A' series.............. |
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450 Posts Member #: 449 Senior Member Oxford |
20th Jun, 2007 at 09:42:00pm
On 20th of Jun, 2007 at 08:52pm TurboDave said:
I will throw you a wet fish here, as a hopefull cause of your woes. Somehow my guides on all the valves (I forget if it was exhaust or intake) went hugely bad in a very short space of time two years ago. They had been deemed "fit for further service" at the last rebuild, but once the head was lifted the previous 'slightest movement' had shifted to around 60-thou measured at the valve head. No idea why / how it happened, but high revs were happening prior to it 'blue smoking'. If the guide were removed and pressed back in, that will be your problems as the hole (ID) is generally not concentric to the OD of the guide. |
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1060 Posts Member #: 588 Post Whore Delaware, USA |
20th Jun, 2007 at 10:10:46pm
On 20th of Jun, 2007 at 08:52pm TurboDave said:
I will throw you a wet fish here, as a hopefull cause of your woes. Somehow my guides on all the valves (I forget if it was exhaust or intake) went hugely bad in a very short space of time two years ago. They had been deemed "fit for further service" at the last rebuild, but once the head was lifted the previous 'slightest movement' had shifted to around 60-thou measured at the valve head. No idea why / how it happened, but high revs were happening prior to it 'blue smoking'. Well Dave thats the same story.. The guides were deemed fit and it happened at high revs, The smoke does not shoot out like say an exhaust pipe rather it drifts out, the higher the revs the more... I have just removed all the valves and there *may* be a defect on #4 inlet that could explain the compression loss plus its deffo looser that the rest --I would say 10 thou play Dopy me never thought to check the compression.. maybe it was always down and I rushed off to the RR anyway.. That doesn't explain the smoke though BUT No4 exhaust valve stem seal was not on the stem and fell off when I removed the springs, the others had to be persuaded off surely that cant be the cause of the smoke?? Another straw is that there just may be a semicircular mark on the #4 piston, did the valve hit it and bend? its not bad, just a mark. I currently have the piston bores filled with ATF and No4 is not loosing any faster than the rest so far.. think I'll do the same for the head. and go fore a beer or something stronger.. I'm thinking I shoulda played Golf today!! website:- http://www.terryhunt.co.uk
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 368 Posts Member #: 362 Senior Member durham area |
20th Jun, 2007 at 10:18:44pm
Hi had this problem on my way back from york at easter only number 4 down upon removal of pistons found that No4 ,3,2 had all broke there ring lands not a mark on the bores and all rings intact hope its not but sounds the same as mine .
love that straight cut scream!!!
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1060 Posts Member #: 588 Post Whore Delaware, USA |
21st Jun, 2007 at 02:13:22am
Holy Crap!
Edited by Turbo Tel on 21st Jun, 2007. website:- http://www.terryhunt.co.uk
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Site Admin  9407 Posts Member #: 58 455bhp per ton 12 sec 1/4 mile road legal mini Sunny Bridgend, South Wales |
21st Jun, 2007 at 03:14:58am
keep us posted mate! On 15th May, 2009 TurboDave said:
I think the welsh one has it right! 1st to provide running proof of turbo twinkie in a car and first to run a 1/4 in one!! Is your data backed up?? one extra month free for all Turbo minis members, PM me for detials |
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1641 Posts Member #: 178 Post Whore stowmaket suffolk |
21st Jun, 2007 at 07:03:26am
turbo estate were they the mega turbo pistons! always looking for them bigger bunches of bannanas |
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 6752 Posts Member #: 828 Post Whore uranus |
21st Jun, 2007 at 08:18:18am
tel , if you read the gt17 thread in the tech section , theres a picture of my exhaust seal off a guide ,this did create spectacular smoke out of the exhaust.but none from the breathers .
Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM |
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Forum Mod 10980 Posts Member #: 17 ***16*** SouthPark, Colorado |
21st Jun, 2007 at 01:48:59pm
On 20th of Jun, 2007 at 09:42pm mikemph said:
On 20th of Jun, 2007 at 08:52pm TurboDave said:
I will throw you a wet fish here, as a hopefull cause of your woes. Somehow my guides on all the valves (I forget if it was exhaust or intake) went hugely bad in a very short space of time two years ago. They had been deemed "fit for further service" at the last rebuild, but once the head was lifted the previous 'slightest movement' had shifted to around 60-thou measured at the valve head. No idea why / how it happened, but high revs were happening prior to it 'blue smoking'. If the guide were removed and pressed back in, that will be your problems as the hole (ID) is generally not concentric to the OD of the guide. Mike - I've no idea what you mean here? I had given the valves a wobble test in the guides, and deciced they'd suffice for another year. I'd never remove guides only to re-fit them - I removed the VERY worn guides and the head shop fitted the newuns and serdi'd them true. Anyways - I miss read this: I didn't see the smoke from the breathers bit, just the 'blue smoke'. Mine didn't do that - just smoke from the exhaust. Smoke from breathers is never good. Sounds like you might have ugly pistons. :( I have had the ring lands come off pistons before - a mixture of overfuelling and too much advance in my case. Edited by turbodave16v on 21st Jun, 2007. On 17th Nov, 2014 Tom Fenton said:
Sorry to say My Herpes are no better Ready to feel Ancient ??? This is 26 years old as of 2022 https://youtu.be/YQQokcoOzeY |
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368 Posts Member #: 362 Senior Member durham area |
21st Jun, 2007 at 05:16:41pm
No they were +40 AE hepolite turbo pistons, think it was to much advance and slightly lean mixture at part throttle 70 miles at 70MPH allthe way home was fine on the strip the steady drive home killed it! love that straight cut scream!!!
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6752 Posts Member #: 828 Post Whore uranus |
21st Jun, 2007 at 07:04:36pm
is the part no on those 22357, turbo estate ?? Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM |
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1060 Posts Member #: 588 Post Whore Delaware, USA |
21st Jun, 2007 at 07:24:39pm
Overfuelled and advanced, Yup that sounds like the situation.
Edited by Turbo Tel on 3rd Jul, 2007. website:- http://www.terryhunt.co.uk
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Site Admin 8506 Posts Member #: 16 Sold the turbo and seeing what the C20XE can do! Near Lincoln |
21st Jun, 2007 at 07:29:16pm
yes and no, the RR guy is the expert at the end of the day. or is supposed to be. |
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368 Posts Member #: 362 Senior Member durham area |
22nd Jun, 2007 at 03:32:42pm
yes that is the number on them they look like a decent quality piston to but nothing stops the dredded detonation love that straight cut scream!!!
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1060 Posts Member #: 588 Post Whore Delaware, USA |
3rd Jul, 2007 at 02:39:59am
Good call Turboestate!
Edited by Turbo Tel on 10th Mar, 2008. website:- http://www.terryhunt.co.uk
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 4559 Posts Member #: 786 Post Whore Bermingum |
3rd Jul, 2007 at 07:21:21am
Hi,
VEMs Authorised Installer / Re-seller. K head kits now available!
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4309 Posts Member #: 1321 Post Whore Wiltshire |
3rd Jul, 2007 at 08:30:40am
I can feel my wallet burning Edited by minimole23 on 3rd Jul, 2007. On 7th Oct, 2010 5haneJ said:
yeah I gave it all a good prodding |
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