Turbo Exhaust

[Fat Albert]

I've done a search and can't find the answer!
My 951's exhaust started blowing badly this morning on the way to the station, which is annoying as I am due to attend the inaugral meeting of the Sky Gods Sports car club on Sunday, in company with a fellow Porsche-owning pilot. (1985 SC convertible).

Having a brief look underneath this morning in the station car park, it is blowing from the front, it has a stainless middle and back section, but the short front section looks like it could be the culprit.

The questions are, is there any other part further forward that could be blowing, or is it likely to be that piece, and when I look on the internet 'full systems' seem to be just the middle and back sections, so what is the front section called (if not 'the front section')

Finally, where is the best place to order one from on overnight delivery?

Thanks Chaps

 

[Diver944]

Hi Jeremy, sorry to hear of your woes (or should that be blows - sorry ) The 944T exhaust is made up of many pipes and boxes the main two of which are the rear box and the front pipe. It sounds like your blow is one of the smaller sections so I have annotated a picture of the underside to help you determine which it is. Ignore the coloured labels that relate to jacking points but notice the black text to the right of each component:

 

[robwright]

If you can get the part number try Douglas Valley breakers mate. I got a crossover pipe from them in a day or two. They are not cheap though. I guess because they know how desperately you need it!!! []

 

[Fat Albert]

Blimey! Thanks for that diagram, no wonder TWG was so cagey when I called them, I assumed it was just the usual bit of bent gas pipe! I think I might see if I can run it over to them in the morning to give it a poke with a sharp stick and determine where the issue lies. Rob: DVB are always expensive, even when you aren't desperate!

 

[Diver944]

ORIGINAL: robwright I got a crossover pipe from them in a day or two.  They are not cheap though.  I guess because they know how desperately you need it!!! []

An alternative to an expensive second hand part that is already 20 years old is to buy the two part crossover that Lindsey Racing makes http://www.lindseyracing.com/LR/Porsche//LR-951-XOVR.html 170 Dollars plus shipping, VAT and import tax

 

[amrbose14]

It's also possible for it to blow at the junction with the wastegate. Chris

 

[Fat Albert]

Right we had it up in the air this morning to change the brakes (easiest ones I have ever done!) and started it up crawled around to find the culprit: It is the Wastegate Discharge pipe (thanks again for the diagram!)

I will fish around on the web for a replacement and get my local garage to swap it over one day this week, now wonder it made so much noise on full boost! (gaining the attention of our local boys in blue...)

 

[nick_968]

There was one on ebay last time I looked.

 

[Fat Albert]

Thanks Nick, found it, I will see what TWG say tomorrow and then if they can't get a new one at a reasonable price I will buy the ebay one and get my local garage to fit it this week

 

[Fat Albert]

Right, just ordered one from OPC Harston, £88+vat, they have called me back and offered the seal & bolt kit for £45, which I have gone for as I have no idea what the existing ones will be like after 22 years and 199k miles. Has to be shipped from germany so will take 4-5 days TWG have quoted £60 to fit (if the bolts come out OK), but are struggling to fit me in next Saturday. It has just been pointed out to me that the serviceman at the Railway station did have an ex OPC mechanic in there as well as an ex 944 & 968 owner, so I will give them a call this afternoon as that would be perfect from a logistics point of view

 

[Diver944]

You 'should' have no problems using someone with no 944 experience, it is simply a pipe with bolts at each end that are unbolted and then reattached. You could do it yourself with axle stands but if one or more of the bolts are seized you'll need a big breaker bar and a jar of Popeyes spinach beforehand []

 

[Fat Albert]

The OPC quoted me £350+Vat to do the job![] I have booked it into my local Serviceman at the Railway Station, an ex-968 owning friend of mine reminded me that the manager used to have a 944 Turbo and one of the mechanics is ex-OPC, so it will go there on Monday.

 

[944Turbo]

The short pipe next to that went on mine, a friend of my brothers (who works for a manufacturer of aircraft parts) welded it back - apparently when originally welded they used the wrong wire or rod so it was too brittle - still after 17 years and c150k miles it didn't do too bad, he welded it back up - better than new for a fiver Tony

 

[Fat Albert]

That was lucky!

 

[Fat Albert]

AAAAAARRRRRGGGGGGHHHHHH!!!!!!! My wife just called me saying that the part she had just picked up for me was much smaller than expected....I called them and found that they had ordered the pipe between the wastegate and the one that I had ordered!!!![] The part I wanted is in Germany and is priced at £280+vat....... sooo, I have just ordered the secondhand one off eBay and have crossed everything I have 2 of that it comes in time for Monday!

 

[Fat Albert]

Just had a call from the garage, all done, they have charged me £177 inc vat for 3 hour's work, so about what the OPC said it would take! Will see how it drives when I get home tonight! They did tell me that I had an oil leak, I said 'Only one? There is at least 4!'

 

[Fat Albert]

well it works! quieter than it has been for a while, which is quite telling I can see where the 3 hours went judging by the gun gum around the rear seal!