I was just wondering how far back in the exhaust system can you install a trubo and still have it be effective enough to provide boost and not lag too much.
Lets say you have a truck with lots of ground clearance. Could you install the turbo after the Y collecter so you have both sides of the motor feeding the turbo and they you wouldnt have to try and make it fit in a tight engine compartment. Then you could use a sump pump to get the oil back up to the engine.
Could this work? I could deal with some lag as log as it wasnt a rediculious abount and could you get enough boost for about 8psi with the right turbo size?

 

the turbo should be placed close to one head mounted on a short header or manifold with a pipe from the opposing cylinderhead running over to join it at the collector/mounting flange (this is for one turbo setups). It is another good thing that you addressed turbo lube return because severe smoking can occur (even on a good turbo) if the return line is not nearly straight up or down back to the oil pan. the dribbling oil may run the sump pump dry at times and a long duty cycle sump pump would be needed and I know of none.

 

I have seen a lot of pics of the single turbo setup but I was just wondering if it would be possible to get away with the setup I described. Just to make it easier to plum in the turbo. Well I guess it dosent sound to feasible then. Thanks for the info

 

I already brought up a topic like this. Only one other person has done this, and they used an additional pump to bring the oil back to the oilpan. I'm going to put mine between the radiator & the engine. Plenty of room w/ the 6 banger.

 

Exhaust heat is what drives the turbo. That's what makes a turbo so efficient. You can have a ton of exhaust manifold pressure and still not make any boost worth mentioning. With the turbo way back there if you could even make 8 psi I'd be impressed. You'd also have to expect hella exhaust leaks where the manifolds bolt to the Y pipe. The compressor plumbing would be a pain and would run right next to hot exhaust lowering efficiency plus the extra work needed to push a fluid through that much pipe also lowers efficiency. I'd say that was some very creative thinking, but not very practical.

 

Can you measure how far it would be away from the intake ports please?

 

What he is talking about doesnt sound unreasonable to me,if the turbo is right at the "y" on a stock configured truck exhaust,[Chevy?] thats no different than any single turbo set-up.
My driver side crossover is 4 ft long,pass side is 3 ft,and my equal length primarys are 18"and my car makes boost near-instant on hard acceleration. I argee with the hot exhaust theory,but if he wraps the pipes,no problem.
The oil return just needs a sump and pump to get it back to the motor,nothing that hasent been done before,weldon makes the pump,but its kind of pricey.

 

The truck is a chevy S-10 4X4. Is there a web site where I can find a sump pump setup? Also what would be a good doner car to get a correct sized turbo from?

 

What size engine is in your truck?
a 2.8? 4.3? 2.4 "Iron Duke"?

 

It is a 2000 S-10 with a 4.3 liter. I was going to mention that in the last post but forgot. I may kick around doing this once the warrantee runs out. Just run a small amount of boost 8psi or less and get an FMU and an inline fuel pump to keep things happy.