1976 930 turbo exhaust
 

I'm restoring 76 930turbo and need new exhaust system. What is the best option for me any suggestions?

Factory or aftermarket?

I'm not sure,if I'm fully restoring the car,should o go with OEM or aftermarket?

The original exhaust systems on American market 1976s are horrible from both a performance and engine longevity standpoint (talking about the infamous, thermal reactors), so I would never put one on regardless, but people that are originality or concourse pansies, would want those on the car.

If it is not a show car I would go with an equal length header from Brian Bodart. It provides a little more drivability by lowering boost onset rpm.

Are you using the original 3ldz turbo or upgrading to K27 or something more modern?

Rahl

Rawknee's ...rumor has it you have thermal underware....you know, that performance and longevity problem Paul always talks about.

Rahl

Rahl, check your PM box for photographic evidence of such - make sure you are alone when you do so, however, or people will talk! :eek:

I would get both. Find an original system and put it in a box for the next owner. Buy a performance system and put it on the engine for your enjoyment. The OEM early system is so restrictive that our system adds nearly 100HP alone. No that's not a joke or typo. OEM is that bad and ours is that good. Full boost is reached 1000rpm earlier and you get 100 ft/lb of torque where you never had it before (under 3500rpm). that's with the stock 3LDZ as well.

^^^ DO NOT OPEN THAT PM Rahl! Some things can never be unseen. :eek: I still have nightmares.

^^^

Then why do you keep asking for more, varied angled pics, Deez, ya' fookin' cheeky bastage ?!?!?!?!

I would go with RarlyL8. I haven't place my order with Brian yet but I will be soon. He has a great reputation on the forums and great customer support.

I had originally purchased a Fabspeed system but never installed it due to quality control issues with their exhaust and shipping. After much headache Fabspeed refunded my money.

Is that 100 hp gain in comparison with the thermal exhaust system, or with the Euro style exhaust?

There are obvious differences between the aftermarket replacement parts from Dansk and the original parts. From a restoration point of view, that is a problem. The same is true with aftermarket mufflers as well.

The fully functional air injection, with thermal reactors involves a lot of parts. I don't know how many of those you have, but getting the thermal reactors, air injection, and heat exchangers together is going to cost around 6000 US.

If you aren't up to fully restoring it, you will probably be better off selling it to someone who is, and buying a later turbo. You could get a nice 964 Turbo for what an early 930 in need of restoration sells for.

"Restoring" or "Restoring"...that is the question!

Rahl

USA system. The 930/51 3.0L Turbo w/USA system was rated at 245HP, 260HP for the 930/52 3.0L ROW Turbo engine with Euro exchangers. Those numbers are at the crank.

I'm not sure if I can afford now $6k for exhaust,I did jump in something that I didn't know how much will cost me.Already spent $50k and I have to spend probably another $50k if not more to finish the project.So far all the parts that I bought are original ,but I'm not sure that I can spend $6k for this.
I was thinking to sell it ,but just love this car to much and I don't know what to do anymore

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I'm using original turbo.I was talking to my mechanic to send a turbo today to be rebuilt

Mine is euro model ,it was imported in USA from Switzerland

If you are going to stay with the 3ldz turbocharger it will not spool up until about 4,000 rpm and that is when the cam want to start breathing too giving the famous Turbo Carrera kick in the pants. with the tall gearing in the 930 transmission it makes the early turbos drop out of the sweat spot for both the turbo and cams producing the famous "turbo lag". If you drive the early cars really hard to redline you can keep the turbo lag to a minimum but it is a lot of work on twisty roads. With equal length headers the turbo will spool earlier and give the driver a wider more useful rpm range to drive in especially when used in conjunction with the K27-7200. Short tube headers give more power at higher rpm and work well with turbos that like the higher rpm range like the k27-7006. Naturally there are many other combinations that well especially with some of the more modern ballbearing turbos.

Rahl

That really opens up possibilities for you that are a lot less than $6K - for OEM, the early, non-USA Turbos used the exact same headers, j-pipe, etc (without the bung for the Lambda O2 sensor), that is also found on 1986-1989 USA models - much easier to find those components second hand than the early USA exhaust gear.

Also, it doesn't look like your cylinder heads are even drilled for the air injectors, to that eliminates all of those expensive, and dumb, parts - more good news!