Basil Fawlty Moment Approaching

[Guest]

Well i just got mine fixed at the weekend. It was the gaskets between the exhaust and the adaptor plate that i did not renew.

Taken off, cleaned and replaced, things much much better and hopefully all tightend down. Maybe its jus tme but the car feels much better now the leak has been fixed, also the cap off the emmissions tube had disintegrated so that needed replacing.

I have a quiet car now, well quietish.

 

[John Sims]

If the gasket has deformed like yours John, I shall just use some gasket paste and butt the brackets up to the wastegate.

If it is at all loose I'd throw the gasket away. I retightened mine onto the original gasket first time round and the gasket just destroyed its self in no time at all leaving the wastegate loose again.

I'd also get to it without delay as I lost a bolt previously. Not that that is too much of a worry as SFR are sending me new bolts and gaskets. Now how long ago was it since Jamsport?[]

 

[944Turbo]

Mine fell apart yesterday (and I thought I had tightened all the bolts) the gasket was damaged and I completely ignored Johns advice and cleaned it and coated it with firegum - Fired it up and yes it leaks, so tomorrow I can take it all apart again. At least i can do it sitting up.
Tony

 

[John Sims]

Whilst not wishing bad luck on anybody, one of the great things about these forums is hearing of others misfortunes.

When these sorts of things go wrong on your own car it becomes a very personal issue. When you hear of the same things going wrong on other peoples cars you realise that perhaps it isn't a case of your car has a particular hate for you, it's just one of those things.

Noting all of the above - you have my sympathies Tony. It is a bit of a hatefull job. I'm getting a bit concerned now though as my TiAL still has one original gasket left. I wonder how long that will last.

 

[Diver944]

John I am guessing your intact one is on the cool side of the wastegate.

My hotside one was starting to leak last week, and the gasket material was being blow away so the the bolts would have eventually come loose. I took it out and bolted it up flush using gasket paste

I ummed and ahh'd for a good few minutes before taking out the cool side as well and using paste again. In retrospect I think the coolside may be ok as it only heats up when the wastegate opens

 

[944Turbo]

Coolside on mine but then it probably got quite warm at Bruntingthorpe. I definately reseated the hotside gasket as it was out of alignment can't remember if I did both or not, prior to fitting.
Tony

 

[John Sims]

John I am guessing your intact one is on the cool side of the wastegate.

It is.

As it survived a day of hell at the hands of Wayne I'm hoping that I shouldn't have any problems.

When I bolted mine up, without the gasket, I thought about using paste and but elected not to. I found that the paste would always blow out on the Westfield and consequently don't have much confidence in it. I did polish up the mating surfaces on my wastegate with an oil stone to try to ensure they were flat and clean though.

 

[944Turbo]

Well had a look today, it was the other side that was leaking on mine as well (hot), I missed it yesterday as I didn't remove it completely and it wasn't really loose like the hot side. I have wire brushed the gaskets coated them in firegum and put it back together. If (when) it goes again I will use the Simms method (don't currently have a flat oil stone).
Tony

 

[Diver944]

I don't even know what an oilstone is [&:] I must do a Google on it

I have to admit, I now have visions of John huddled over an oil stone in darkest Essex, polishing his wastegate like some mystical Arthurian Blacksmith would have toiled away sharpening Excalibur [8|]

 

[John Sims]

I don't even know what an oilstone is I must do a Google on it

An oilstone is generaly used for sharpening things such as chisels. It is a flat abrasive stone, generaly a composite these days, to which you apply oil - it need not be a sythetic oil in this case. The oil has two functions, it floats the abraded metal particles clear and thus reduces the chance of the stone clogging and also cools the very edge of the blade.

Composite stones often have two sides, one course and one fine.

Whilst being technical, I actually used an oilstone slip on my wastegate. This is a small oilstone, with a rounded wedge shape in section, often used for sharpening gouges amoung other things. I found this more convenient to handle when laying on my back under the car.

On reflection the Arthurian Blacksmith isn't a bad analogy. []

 

[944Turbo]

Going back a bit, I wonder if the map issues were down to a lack of lamda sensor. The american turbos all would of had one so I wonder if this was an issue. Doesn't explain why the original guru chips worked but maybe the map ones are 'cleverer'
Tony

 

[John Sims]

I wonder if the map issues were down to a lack of lamda sensor.

An interesting point Tony,

In the fullness of time I'm intending to fit a lambda, when I can get someone to provide me with an exhaust with a bung hole in it. []

In preparation, the wiring for the lambda is in closed loop with my AFR gauge (it may not work at the moment but it looks the nuts []) but there wouldn't be too much of an issue to re-link it back to the engine management.

I have a new chip (thank you Andrew) which isn't going in untill such a time as it can be set up on a RR. Assuming I can get the lambda fitted it would be interesting to see what difference it makes.