twinturbo 4efte...

GP82

Member +
I think any sort of big hp requirements these days can be met with by one turbo, but they might not work well down low, so some claim that even in a small displacement high hp application, two smaller turbo's reduce lag over one big turbo. Other's say that because of basic physical laws, the reduction in inertia and flow caused by splitting/dividing the exhaust energy in half outweighs the advantages of lighter, smaller components in a single turbo so one big turbo housing is more efficient then two smaller ones.

I remember seeing this at a shop:



I guess it's a choice of what kind of power delivery is required from the available powerband, but there is always going to be compromises.
 

AdamB

Member +
That's the Owen Developments 4G63 head they did for a laugh lol. Never had it running or anything was just purely for fun. No reason why it wouldn't work though.
 

5e colin

Member +
most simple way ever is to plum in another ct9 like this



1s you have the exhaust from 1 feeding the other creating free extra boost

compressor side do NOT !!! feed each other the both plum into the intercooler pipe
i cant understand why any1 has come up with it this way ???? seems fair simple to me :) :) it will be my next project anyways after i finish the charger > turbo setup
 

5e colin

Member +
most simple way ever is to plum in another ct9 like this



1s you have the exhaust from 1 feeding the other creating free extra boost

compressor side do NOT !!! feed each other the both plum into the intercooler pipe
i cant understand why any1 has come up with it this way ???? seems fair simple to me :) :) it will be my next project anyways after i finish the charger > turbo setup
 

Sheldon

Malta Area Rep.
Wow..thats mega DIY.. Im guessing your using anything you find around ?:p hats of for trying this out.. Will you be using topmount IC?
 

5e colin

Member +
thanks :) made in the garden :) :) , no i buy everything ( metal ) in my local metal shop they have loads there to choose from

top mount for now to make my life easier if it works great i will rotate the comp housings and face them down for a fmic

any1 have a cheapo wideband ????
 

Jay

Admin
That'll be interesting to fit in the engine bay, might be a bit tight to the front bumper lol.

Keep us posted on how you get on, GT twin Turbo sounds great!
 

5e colin

Member +
believe it or not jay doesnt enter the bumper area its really compact the top end of the double ct9 flang just about comes to the slam panel it clears but its close
i can even use the stock cat ha ha but really really tight to the rad !!!! problem for later
 

5e colin

Member +
pure diy :) :) i only have a china pilar drill a budget welder/ angle grinder and a few files etc ( dont even have shed !!!! build in back garden ) my crudeness goos with my building tallent it will inprove as it does ha ha also im stuck with what my local supplier has at the time i go looking !!!!! i dont live in a big town so stuck with that

its no wepr quality work ha ha but deffo strong i wish i was that good in welding !!!!
 

5e colin

Member +
marco is looking right my exhaust feeds 2nd turbo my setup is almost identical exept

i see in the link 2nd turbo has no actuator ?????


 
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Jay

Admin
The two setups are different from what I can see, never thought of doing it like the one in the link but it makes sense now I see it.
 
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