yes or no? anyone? thanks

 

Everyone else will say yes, I will say no.

Some singles are not water cooled.

Most "kits" are not engineered but just fabricated.

Installation quality is a big factor in reliability.

 

Stock twins weakness is the stock turbo control system. The stock solenoid/actuator/check valve/vacuum hoses have many failure points, and the engine heat attacks it relentlessly. So control system problems are just plain annoying. But coupled to the stock engine, the engine will last a long time working with stock twins. So in that sense the stock twins keep the car as a whole reliable.

Singles don't have the fancy control system, but generally the car is more heavily modded. Anytime you mod and increase horsepower, you put extra load on the engine. So the single turbo will work pretty reliably, but it tends to bring out other considerations like detonation. Since single turbo setups are generally all different (fuel system, boost control, wastegate, etc) they are harder to get running properly and harder to troubleshoot.

Dave

 

they are definately more fun

 

I guess this would be a similar question. Thoughout the years I have heard two schools of thought on the reliability of the single setup. On one side, less complication, less heat stress and proper tuning will make it as reliable as stock (the "All in the tuning" folks). On the other side of the fence, regardless of tuning, pushing more power to the ground means shorter engine life.
I am in the process of converting to single and would like to know from those who have done it, what are your thoughts.

p.s. please don't try to answer this if you don't have experiences with single turbo FDs.

 

TWIN turbo sounds cooler than SINGLE turbo.

 

Ricer :p

 

werd up g

 

depends on your needs.

 

theres no such word as 'need' in owning an FD, its all about 'want'.

e.g. - 'I want a new T51 single blower for my FD, but I really need to buy a house".

 

Since single turbo setups are generally all different (fuel system, boost control, wastegate, etc) they are harder to get running properly and harder to troubleshoot.

Dave[/QUOTE]

I hated when I had the twins, it took me hours to look for a boost leak and for me its so much easier to control the boost, troubleshoot(there's not much to look for), and tune a single turbo plus you get rid of all that rat's nest which makes the engine bay look so much better

 

Yes, you get rid of the rats nest and its problems. But people have been troubleshooting that for years.

With a single turbo you're running a mostly unique combination of components (fuel rails, injectors, FPR, turbo, fuel pump, ECU, wastegate, etc). If any problems do arise getting it all to work together, you're on your own. It's not as bad as the twin control system, but it can be a pain.

Dave

 

don't you think more people have been troubleshooting the conventional turbo set-up longer? the single set-up has been around longer than that messed up sequential set-up however I really do like the initial power that it gives but for the headaches I can definitely live without it.

 

I am in the process too, going to a TO4E, I've had all sorts of problems with heat ,boost drops ,oil leaks, vacuum lines and high emissions.
I know some of these things are not directly caused by the twins but I'm changing over for reasons of simplicity, you could keep the twins and go non sequensial.
I would say that the initial out lay for "going single " would out way the continuing cost of upkeep for the standard setup, looking at prices for good condition single turbos this too is better than re builds on the twins.

 

I think that a single turbo running around 7-10psi would be more reliable than a seq. car. The way I think about it is, you have the 60ish (Jeff how many pounds is the stock turbo system?) lbs of the stock turbo system sitting right on the motor...baking those water seals. With most aftermarket manifolds, you have alot more room and that allows cooler air around the turbo/exhaust manifold. But weather its a single or seq. car.....a unproplerly tuned/poorly built FD will be extremely unrelaible.

Most people who do the single conversion are'nt looking for 100k miles on a engine...well atleast all the people that I know are'nt.

I'd be happy with 10k miles on a engine....as I've only put 6k miles on it in the 5ish yrs I've owned it. CJ

 

My thoughts exactly. I will definately say that working on a single turbo is much easier then a twin turbo one. You have so much more room after the complete conversion to work on it. Plus you dont have to worry about many vacuum problems. My temps went down considerably since the swap too.
adam

 

I loved the sequential setup, especially with J-spec twins!

 

?? Tuff Question I Will Say That The Single Will Have Less Heat Under That Hood Than The Twins

 

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