Physical size of a T78 turbo pic

[andyf]

In case you've never seen a Big Turbo up close, here's the size of a Greddy T78 compared to a Nokia 8210 courtesy of T04r.com ...

http://www.t04r.com/members/media/johnm_turbo02.jpg
PS. Please don't sue me!

[StuyMac]

Ferkin 'ell :eek:

Thats rather on the big side!!! ...........but I want one ;)

[andyf]

Well if you wanna see one on an S13, head down to Corsham ... ;) :D:D:D

[GIBB0]

must have a fair bit of lag:D

[Papa Lazarou]

Saw one on a Skyline at Billing. The compressor is pretty big but what is really surprising is how big the exhaust housing is compared to my humble little T518Z.

Looks like he's polished that himself too. They have a dull grey finish from the factory.

[Jeff]

Maybe I should ask this in a different part of the board, but can someone educate me?

I’m assuming the benefit of a giant turbo like that would be that once it spooled up it would produce very high pressure?

But why is that about size rather than what a turbo is made of? If you muck about with the waste gate I thought even a ‘relatively’ small turbo, like a T25 could produce quite high boost until it broke. So rather than make it bigger why can’t you make it out of stronger materials?

And doesn’t the materials used inside the engine, combined with the amount of fuel you can get into the combustion chamber impact upon how much boost you can run, irrespective of how big a tubby you stick on the side of the engine?

These questions probably make me look thick (as usual) but I am keen to learn if anyone has the time or inclination to teach me? :)

Sorry if this is too serious a question for the non-200sx related forum :o

Otherwise I agree, that turbo looks :cool:

[SteveCarter200]

Originally posted by Jeff
Maybe I should ask this in a different part of the board, but can someone educate me?

I’m assuming the benefit of a giant turbo like that would be that once it spooled up it would produce very high pressure?

But why is that about size rather than what a turbo is made of? If you muck about with the waste gate I thought even a ‘relatively’ small turbo, like a T25 could produce quite high boost until it broke. So rather than make it bigger why can’t you make it out of stronger materials?
Heat. A small turbo will produce massive amounts of heat when compared to a large turbo at the same boost pressure. As we know heat is bad.

And doesn’t the materials used inside the engine, combined with the amount of fuel you can get into the combustion chamber impact upon how much boost you can run, irrespective of how big a tubby you stick on the side of the engine?
Yep, a strong engine means more boost which means more power (if its set up correctly)

These questions probably make me look thick (as usual) but I am keen to learn if anyone has the time or inclination to teach me? :)

Sorry if this is too serious a question for the non-200sx related forum :o

Otherwise I agree, that turbo looks :cool:

[Jeff]

Thanks Steve, I understand :)