Turbo For My 4kc

[Taz_Rx]

3lt petrol, not deisel?

That much torque at 1100rpm is just rediculous. I bet you they've sacrificed a lot of top end power for that torque, bring me back to the agument of starving the 4k in the top end.

 

Yes you would need to use a gasket on either side of the spacer, which just makes matters worse. IMHO you're stupid not to build a hybrid (3K block/4K head) when you have the option over a spacer.

 

Free/cheap turbos are good,....... but free/cheap un-suitable turbos will just cost you power!!! :)

[Evan G]

3lt petrol, not deisel?

That much torque at 1100rpm is just rediculous. I bet you they've sacrificed a lot of top end power for that torque, bring me back to the agument of starving the 4k in the top end.

 

Yes you would need to use a gasket on either side of the spacer, which just makes matters worse. IMHO you're stupid not to build a hybrid (3K block/4K head) when you have the option over a spacer.

 

Free/cheap turbos are good,....... but free/cheap un-suitable turbos will just cost you power!!! :)

 

its a petrol turbo

 

it was free :y: turbo

 

1.5L turbo running on a 1.2L? 1 more cylinder feeding the turbo but .3L less capicty?

 

 

fresh rebuild of the 3k with a 4k head maybeeee valve springs, cam? efi manifold? wolf 3rd? ($1300 :lolcry:)

[Taz_Rx]

its a petrol turbo

 

it was free :) turbo

 

1.5L turbo running on a 1.2L? 1 more cylinder feeding the turbo but .3L less capicty?

 

 

fresh rebuild of the 3k with a 4k head maybeeee valve springs, cam? efi manifold? wolf 3rd? ($1300 :y:)

 

 

Try it if you want, but don't be suprised if it goes like shite. Yeah it'll boost quick, but thats all it would be any good for.

I currently have a T25G (2lt SR20 turbo) and I'm pretty over how its too small for my 5k. Also had a 2lt WRX turbo which was near perfect size for a 4k. There's a little more to it than just saying its only 300cc off what it was on.

 

Out of interest, whats the peak power RPM of said twin turbo BMW?

[Evan G]

Max Power: 225kW @ 5800rpm

Max Torque: 400Nm @ 1300rpm

Max Speed: 250km/h

0-100km/h: 5.7 seconds

 

 

 

you just sink in your seat and count how many times the traction control light flashing

 

 

try source another turbo and do a 3kc twin turbo? :)

Edited August 19, 2009 by Evan G

[Taz_Rx]

try source another turbo and do a 3kc twin turbo? :y:

 

...on a 5k maybe. And it would go a lot better (once you got boost) than just the one.

 

I nearly did a twin turbo 4k with 2x CT12's. Thats how small they were. :)

[Evan G]

i also got a turbo from a 3L diesel

 

with the veriable vane wastegate?

 

should spool quickly but it wount have excessive exhaust back pressure becaue engine is so small?

[Taz_Rx]

i also got a turbo from a 3L diesel

 

with the veriable vane wastegate?

 

should spool quickly but it wount have excessive exhaust back pressure becaue engine is so small?

 

 

That turbo would probably be a lot more suitable. :y: General rule of thumb with deisel turbos on a petrol motor is you can halve the capacity because the petrol motor does twice the RPM. This also answers your bottom question too.

 

VNT "wastegates" aren't actually a wastegate, they are a vacuum operated solenoid which works completely didfferent to a wastegate. Was only a couple of weeks ago that I explained how these work in a thread in the general mechanical section. See if you can find it cause I can't be bothered re-typing it again. If you're lucky I'll find you a link soon. :)

[Teddy]

Time to bring out the 1HZ and put her into a rolla.

 

Yes sir. Yes. Sir.

[seabiscuit]

I think Evan_G needs to add Taz_Rx on MSN!

[Taz_Rx]

And its reason like that why Taz_rx doesn't have an msn account!!! :)

[Evan G]

LOL! ^

[machg]

I have a surplus Falcon throttle body EFI $50 plus postage, apparently it will bolt onto a weber carb mount.