Exhaust system suggestions

[colin129]

My car is in for service and it was recommended that I have a big service, it's several years, and 19K miles since I had the last one. In order to adjust the tappets, they need to remove the heat exchangers and due to corrosion, they won't be able to get it back together again afterwards. The exhaust was repaired by welding up 3 years ago, so as a 'temporary' repair, it's done pretty well.

A new heat exchanger from Porsche is like £2.5K+, just for one side, so what they suggested is that I do a minor service instead and do the major service next year, which gives me time to source a new pair of heat exchangers, or perhaps a whole new system, possibly for less than one genuine Porsche heat exchanger.

I very rarely do track days, but I wouldn't want to exclude myself on noise should I get the opportunity in the future, although I wouldn't mind a bit more vocal exhaust. Additional power is of far, far, greater interest though, and takes precedence over any noise considerations, noise for noise's sake is not what I am after.

There has been some discussion previously around exhausts, so all suggestions will be gratefully received.

 

[colin129]

How about something like this?

http://type911shop.co.uk/...f2206766/Products/6301

 

[colin129]

How about 2nd hand?

http://www.ebay.co.uk/sch...xchangers&_sacat=0

 

[Steve Brookes]

How about something like this?

http://type911shop.co.uk/...f2206766/Products/6301

That looks like the Fabspeed system. I hear the fitment can be a bit iffy and you also lose all heating for the car. Personally I would avoid that one.

If going aftermarket I would look at this but it costs a lot more!

http://www.fvd.de/de/en/Porsche-0/-11-20/-/-/item/item_details/VID_8596459-VCD_50790037-gid_27-sort_4-display_50-item_BES96410000S/Tuning_-_Exhaust_-_Exhaust_Systems_BES96410000S_Sport_Exhaust_System__964__Single_Outlet__Cat_Bypass__With_Heat.html

 

[Dekker]

http://www.m-m-germany.de/unternehmensbereiche/street-exhaust/ I don't know the price but heard it was good.

http://www.haywardandscott.com/porsche/911/964.html They have a very good reputation. "See Ya",
whoever he is, has one fitted to his car and speaks highly of them.

http://www.turbothomas.com/porsche-911-964-exhaust# He has a good reputation but I don't know anyone personally who's had one fitted.

With regards to de-catting your system, this is only possible if your car is registered before Sept 1992.

Fitting an aftermarket exhaust system where the exhaust headers are running down either side of the car will increase the power output by about 20hp according to consensus reports. You will probably benefit from a re-map to tune it properly.

 

[colin129]

How about something like this?

http://type911shop.co.uk/...f2206766/Products/6301

That looks like the Fabspeed system. I hear the fitment can be a bit iffy and you also lose all heating for the car. Personally I would avoid that one.

If going aftermarket I would look at this but it costs a lot more!

http://www.fvd.de/de/en/Porsche-0/-11-20/-/-/item/item_details/VID_8596459-VCD_50790037-gid_27-sort_4-display_50-item_BES96410000S/Tuning_-_Exhaust_-_Exhaust_Systems_BES96410000S_Sport_Exhaust_System__964__Single_Outlet__Cat_Bypass__With_Heat.html

I was worried, looking at the one I posted, how it would affect the heating system.

The FVD system looks fabulous! I will have to seriously think about it and in fact it is not significantly more than buying 1 Porsche heat exchanger, might it be tricky to fit though?

http://www.haywardandscott.com/porsche/911/964.html They have a very good reputation. "See Ya",
whoever he is, has one fitted to his car and speaks highly of them.

With regards to de-catting your system, this is only possible if your car is registered before Sept 1992.

Fitting an aftermarket exhaust system where the exhaust headers are running down either side of the car will increase the power output by about 20hp according to consensus reports. You will probably benefit from a re-map to tune it properly.

My car is a 1990, so decating isn't a problem, I thought I already had a decat pipe anyway.

A friend of mine with a 3.2 has an Hayward & Scott system and it sounds like a racing car, definately something to look into, looks excellent value too. Can;t see if it will affect the heating system though.

I guess, I will be able to recoup some of the cost from reselling my good side heat exchanger (and the other side will be worth something), silencer, tail pipe & decat pipe, might be worth best part of £500+

Please keep the suggestions coming, much appreciated.

 

[Dekker]

Photo on the Hayward & Scott page clearly shows the heater connections are part of the system.
They used to do a fitting service for £400 or so, I don't know if they still do.

M&M do customised exhausts "exhaust systems that can be handcrafted according to customer requirements and further refined: you want colored tarnished tailpipes made of titanium or your own logo on the tailpipe? You want a brutal sound or rather a more discreet note? No problem: We turn your dreams into reality."

I understand TT does a similar service.

 

[colin129]

How can they do a complete system for less than the price of one Porsche header?

 

[colin129]

Spoke to JZ about replacement exhausts on Saturday.

Nothing good to say about Hayward & Scott, I am afraid, their suggestion was the M&M system (supplied by FVD), they said that they have fitted an M&M system and seen power gains of 20bhp+.

The basic premise was "You get what you pay for".

 

[Dekker]

[/quote]

How can they do a complete system for less than the price of one Porsche header?

Wrong question. Try--- How can Porsche charge so much for their headers?

 

[colin129]

Fabspeed Maxflow with heat (5th down) - looks like a dual outlet, but I'd want to keep the standard look single outlet. Similar price to Hayward & Scott suggests you get what you pay for again?

http://www.design911.co.u.../Silencers---Mufflers/

 

[colin129]

Can't find a complete Dansk system for 964.

 

[jevvy]

In order to adjust the tappets, they need to remove the heat exchangers and due to corrosion, they won't be able to get it back together again afterwards. The exhaust was repaired by welding up 3 years ago, so as a 'temporary' repair, it's done pretty well.

This doesn't make sense, the heat exchangers do not need removing to adjust the tappets on a 964. Perhaps they meant that the flange between the heat exchanger and the cat (bypass) is too rusted to be able to refit the cat (bypass) but this is fixable without replacing the whole heat exchanger.

If its not too late I'd ask for clarification about which part is actually too rusty to replace and take it from there.

Good luck.

 

[colin129]

In order to adjust the tappets, they need to remove the heat exchangers and due to corrosion, they won't be able to get it back together again afterwards. The exhaust was repaired by welding up 3 years ago, so as a 'temporary' repair, it's done pretty well.

This doesn't make sense, the heat exchangers do not need removing to adjust the tappets on a 964. Perhaps they meant that the flange between the heat exchanger and the cat (bypass) is too rusted to be able to refit the cat (bypass) but this is fixable without replacing the whole heat exchanger.

If its not too late I'd ask for clarification about which part is actually too rusty to replace and take it from there.

Good luck.

You have hit the nail on the head, I believe.

I am looking at another repair, which JZ do not undertake, hence their recommendation for a new heat exchanger. I will, however, obtain some clarification and look into another boge up, err, I mean repair. []

 

[jevvy]

You have hit the nail on the head, I believe.
I am looking at another repair, which JZ do not undertake, hence their recommendation for a new heat exchanger. I will, however, obtain some clarification and look into another boge up, err, I mean repair. []

Boxsey did a post about the repair you may need, see here:
http://boxsey.blogspot.co.uk/2011/09/got-exhaust-repaired-jun-09.html

I dont really consider this to be a bodge as such, if the rest of the heat exchanger is in good order then its insane to replace it for a the sake of a corroded cat flange. Replacing a heat exchanger rarely happens without further collateral damage, either there are issues with exhaust studs or the flange that joins the 2 heat exchangers together which means more hours and often a 2nd heat exchanger.

Good luck getting it sorted.

 

[colin129]

You have hit the nail on the head, I believe.
I am looking at another repair, which JZ do not undertake, hence their recommendation for a new heat exchanger. I will, however, obtain some clarification and look into another boge up, err, I mean repair. []

Boxsey did a post about the repair you may need, see here:
http://boxsey.blogspot.co.uk/2011/09/got-exhaust-repaired-jun-09.html

I dont really consider this to be a bodge as such, if the rest of the heat exchanger is in good order then its insane to replace it for a the sake of a corroded cat flange. Replacing a heat exchanger rarely happens without further collateral damage, either there are issues with exhaust studs or the flange that joins the 2 heat exchangers together which means more hours and often a 2nd heat exchanger.

Good luck getting it sorted.

Cheers, very helpful, I will look into it.

 

[Steve Brookes]

As Jevvy points out the repair done on my heat exchanger flange was an excellent solution. I would expect it to last another 10 to 20 years because as he says the rest of the exchanger is a quality item, it was only the flange that was a weak point.

 

[colin129]

As Jevvy points out the repair done on my heat exchanger flange was an excellent solution. I would expect it to last another 10 to 20 years because as he says the rest of the exchanger is a quality item, it was only the flange that was a weak point.

Thanks Steve, I had been in contact with a specialist to see if they can do that for me.

btw, like the new wheels [8D]

 

[colin129]

I took it to my local specialist last week, who claim to be 'expert' exhaust fabricators but the guy told me immediately that it was not something that they could tackle and directed me to Heywood & Scott who I spoke to today.

They do quite a lot of this and only charge £120 for the job, but it has to be off the car because, although they have done them on the car, not always successfully. So, including taking it off the car, repairing and refitting the system I am in for £500 odd + VAT. Seems a lot, to be honest, but I guess that's the price, unless someone else knows different?

They get a lot via Autostrasse, apparently, who remove the heat exchanger and deliver it to them for repair.

 

[Dekker]

Well get your local Indy to take it off and send it to H&S or drive over to Unit 11 and get the whole thing done for £2-300.
It's not rocket science, you need to find a competent fabricator who doesn't add a zero onto the bill because it's off a Porsche.