just curious if anyone has done this or if it could be done...

i am thinking.....thinking of keeping the supercharger on my srt6... MAYBE adding a second (not sure if i could) and a twin turbo...

so, can i do supercharger and twin turbo
or... dual superchargers and twin turbo... for this one id imagine id need a second intake manifold yes?

 

That much boost you're gonna need new internals, no?

 

btw, boost isn't hard to achieve, its hard to achieve and engine that can handle it.

 

so, instead of making more boost do you have any recommendations on how to achieve more torque?

not including little stuff like cold air etc etc etc etc

 

V8 motor swap

 

forgive my ignorance here but i thought the purpose of having a supercharged v6 was for the reduced engine weight and cost while maintaining the v8 power. so, how would putting a v8 give more torque?

 

I'm not sure why you're looking at trying to add more boost by adding more blowers. DCAI/MAF/Throttle Body, Exhaust ( including headers), SC pully and a tune is probably by far the cheapest way to add HP/Torque.

The money you would invest in trying to get it to run right off 2 seperate forced induction systems would most likely be astronomical.

 

my main reason is because i love supercharger whine. and all the other stuff is too common, how many cars have 4 of any forced induction systems? only the veyron that i know of... its completely a personal thing and yes im aware how stupid it is given i can do those things for maybe 1/4th the price.

and, so why would i put a v8 in?

 

Apaprently money isn't an issue. Why not supercharge a V8?

 

Anyways, i did a little searching for you.

https://www.crossfireforum.org/forum...ire-2-0-a.html

https://www.crossfireforum.org/forum...d-limited.html

https://www.crossfireforum.org/forum...d-srt-6-a.html

 

I think a twin turbo with the supercharger would be a cool project.Now to answer your v8 question there is no replacement for displacement.With a v8 because of those extra 2 cylinders you get more torque at a lower rpm because of the greater rotating mass without having to use forced induction.This is why many times v8's and even some big straight 6's you get more torque than hp and peak is at a lower rpm.Look at some of these blown 4's that will have near 300hp for example but they have 25 to 20 lbs less torque where a v8 with say 300 hp will usually have 25-30 lbs more torque than hp.Others on this forum I'm sure know a lot more than me regarding forced induction but the issue I see in the twin turbo idea is you are going to be forcing pressurized air thru 2 intercoolers then to the throttle body which in turn goes thru the s/c increasing the boost again so even with a stock s/c and mild turbo boost you would be easily in the 30+psi range.More air means more fuel so you are going to need to get enough fuel delivered and most importantly the engine itself heads,valves etc are going to need to take that much pressure or kaflooey.

 

That's not the reason why v8's make more torque lol

 

Oh I stand corrected I always thought it was because of the added number of pistons putting force to the crank then to the flywheel.

 

Not to be a negative pooper but why more power? As we can derive from all the other turbos, V8 conversions and what not, the problem lies not to get the added power but to get the power to the ground. Hence the V8 does the same as a tuned V6 SC on the 1/4.. So a conversion from a SRT6 to a V8 is at least for me out of the question. Especially as the gasoline is way more expensive over the pond. But then again, a V8 is always a V8.. And projects are always fun I guess this posts leads nowhere

Off to eat something.

Have a good one!

 

Your logic makes sense, but it is because there are 2 extra power strokes per cycle. Torque is measured as work/cycle.. horsepower is work/time, a v8 will do more work per cycle than a v6 of equivalent mass.. the extra mass associated with v8s usually is the reason why they don't rev as high as smaller engines and don't make as much horsepower.

 

I fully understand the basics of a 4 cycle engine I was trying to over simply it for him to give him an answer he could understand.The 2 extra cycles you are talking about are the 2 pistons I was talking about also the number of cylinders has nothing to do with how many rpm the engine turns,Nascar they turn what 9-10k rpm,formula 1 19k and a street car v8 5-6k?

 

I disagree, but I'm not going to add any more to this.. If your logic is that the added mass makes more torque, my logic is the the added mass is an added inertial load each time the piston stops. More inertial load = higher chance of failure at higher RPM. Nascar and formula 1 engines are engineered beyond any street engines. Rotaries can rev so high due to their low inertial loading, as the rotor doesn't need to stop and the rotating mass is light. I don't think you need to oversimplify "there are more explosions every time the engine spins around", he's not braindead.

 

OP, the issue with the turbo feeding the supercharger is that the supercharger becomes a huge choke point. There is a point that the supercharger cannot flow enough air to keep up. Also, high boost pressure does not always mean more power. Think more about air flow than boost pressure.

 

Exactly.. Pressure is needed to overcome restriction.. airflow makes power. To add to this, the turbo heats the air as it compresses it, then the supercharger heats it even more... The heat exchangers can only do so much. High air temp's = faster flame fronts = detonation.