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PostPosted: Sun Jun 20, 2010 11:08 am 
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two_OH_five wrote:
Hopefully they'll stand behind the warranty....


:lol: You're soooo funny! After mine and others dealings with them I believe TT actually stands for t*ssers and t**ts...

Louis, I guarantee their answer will be somewhere along the lines of oil starvation, excessive oil pressure, foreign body, incorrect warm up/cool down procedure etc etc. They definitely won't admit liability for it.

Also, if I remember correctly, haven't you been pushing this turbo hard since the day you fitted it? No running in or anything? Perhaps that may be to blame?


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PostPosted: Sun Jun 20, 2010 12:04 pm 
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the turbo was supplyed with an actuator that wont boost lower then 1.4-1.5bar but I did give it about a 4weeks of running in as I did now have it mapped for it, and to be fair you dont need to run turbos in, I have changed the oil and flitter twice in the 600mile I have done with the turbo I will be having a good chat with them and letting them know that my car and the build I have done is in several mags and if that do not help me out then I will make shore that the write up says why I have changed for a TT turbo and the reason why, and then I’ll be giving trading standards a call and see what they have to say about it all, I have not spent over £13k on the car and to let them mess me around

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PostPosted: Sun Jun 20, 2010 12:21 pm 
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Firm but fair

Dan's list is pretty comprehensive :lol: but most of those are for excessive shaft wear. If it's just a seal failure it's harder to hide behind many of those getouts


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PostPosted: Sun Jun 20, 2010 2:29 pm 
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i would say from what i can see and feel that it is the oil seal as there is there no abnormable play in the shaft and the blads all look fine to me

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PostPosted: Sun Jun 20, 2010 5:42 pm 
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Hi,

you can also check the engine ventilation for abnormal pressure to be sure

greetz

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PostPosted: Sun Jun 20, 2010 7:01 pm 
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the oil pressure is all the spec and all of the entilation witch i gess you meen the cam cover breather is going to oil catch can and then to air so no back pressure

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PostPosted: Sun Jun 27, 2010 9:24 am 
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spoke to TT today and thay are ment to be geting back to on monday, to let me know what is wrong and what thay are going to do about it, the lad i spoke to was very helpfall i told him mine was runing a 1.4bar witch he then told me he had a s148 on his gt4 and was runing that at 1.6-1.7bar so its not the boost that has done the turbo in,he said it sounds like there is to much end float on the shaft and that is what is letting the oil past

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PostPosted: Sun Jun 27, 2010 1:36 pm 
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Fingers crossed for a good outcome


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PostPosted: Fri Jul 02, 2010 9:52 pm 
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good new :) the new turbo is now fitted and runing :) Image

it looks to me as if that have sent me a new turbo with my 1.4bar actuator fitted to it, not bin of a blast yet only a steady drive to make shore every thing is ok :) i did have to pay half to the repair bill so not to bad i gess

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PostPosted: Tue Jul 27, 2010 6:29 pm 
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a bit of an update on the engine, as i was still getting over heating problems we did a hydrocarbon test and it showed that the head was leaking:( so we got the head off and First indications show no obvious gasket problems but it appears it may of leaked some oil towards the no.3 cylinder area and gravitating on the passenger side. This verifies the oil puddle in the workshop being on that side.

Also, there appears some bluish tinting near some of the waterways, indicating super heating.
Plus...the cylinders show wear on the thrust sides, are smooth and blacked, due to very rich mixtures.
The cross-hatching has faded and you will burn more oil. Honing is the answer, but requires piston removal etc.
We then had a look at the head and it has warped near no.2 and no.3 cylinder so the head is now off the be skimmed,

here are a few photos of the block


Image
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Pistons and bearings out today.
Image
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Have collected the head also and I'll do a leak test tomorrow.
Image

The pistons are fine but the rod bearings have worn and are rather scored
Image
Image

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PostPosted: Tue Jul 27, 2010 6:46 pm 
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Do you think that the clearances for the rod bearings was too tight?

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PostPosted: Tue Jul 27, 2010 6:50 pm 
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that is what we are thinking but it did turbo over very nice by hand. we are going to replace the ACL shells..(std size)

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PostPosted: Tue Jul 27, 2010 7:19 pm 
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mixer72 wrote:
that is what we are thinking but it did turbo over very nice by hand. we are going to replace the ACL shells..(std size)


Louis, are the bearings as blue as they appear in the photo? If so it looks like they did get rather warm. Is it only on one rod?

Also those piston crowns look like you've either been running really rich, or have burning copious quantities of oil. Ol' Smokey looked like that after 5k miles, but that was burning 5L of oil every 250 miles.... :shock:


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PostPosted: Tue Jul 27, 2010 7:29 pm 
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hi mate the engine did get very warm 2 times when it over heated and nerly got into the red on the stock gauge :( this is why we did a strip down to have a look and yes the ari/fuel has bin running at 9-1 on full throttle and full boost for some reason :? and im gessing the turbo seal going on the cold side has not helped things.
we think we have saved it in time,

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PostPosted: Tue Jul 27, 2010 7:40 pm 
mixer72 wrote:
good new :) the new turbo is now fitted and runing :) Image

it looks to me as if that have sent me a new turbo with my 1.4bar actuator fitted to it, not bin of a blast yet only a steady drive to make shore every thing is ok :) i did have to pay half to the repair bill so not to bad i gess


So you are happy paying to get something repaired under warranty?

Sorry, not trying to be funny, I had a very similar issue with them.
My 1st turbo's hotside disintegrated under light use (1.1bar) after less than 600 miles. I paid for a recore. This lasted a bit better but still under 1k miles. The 1st time I returned it it's failure was due to oil starvation or foreign body, there words not mine. The second time I sent it to Owen Developments who gave me a full written report on it's probable cause of failure. I also had a lengthy conversation with one of the engineers there and he gave me a very interesting insight into why these units suffer early failure.

I didn't have the time to persue things through the courts so I bought a new ct20 and called it a day and learned my lesson. They contacted me about 6 months later asking what I wanted them to do with the piece of scrap I had returned to them. In the end they rebuilt it foc as a gesture of good will. Good will for their turbo falling to bits and attempting to take my engine with it. I had to remove the head to retrieve bits of turbo after the 1st failure.


There is a serious lesson to be learned from my experience with TT. If you want to upgrade save a few extra ££'s and do it right with a Garrett or some other highly regarded brand. There turbo cost me £600 initial purchase + £300 rebuild + £200 removal and re-fitting head + £300 for a good CT20 after the 2nd failure + £350 for a wasted map that was useless cos there was no way I would run another turbo the map was for.

In short TT cost me £1750 and a shed load of hassle and time with no car. Ok I got £250 for my perfect original turbo when I first made the change and I did manage to sell my TT on. I could have bought a Garret for that one and it would still be going strong today. I was lucky the 2nd time it failed it didn't get into the engine.


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