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Turbo setup

Babaganoosh

Babaganoosh

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As .ist of you know I have a gen 3 lq4 6.0 ready for my 83. As of right now it has a factory engine specs but a cam and valve springs to support it. I have landed on a 54mm turbo that is capable of 17psi of boost. How much would I need to change on the engine to make it dependable?
At most I'm thinking 5-10 psi.
This is the cam.
http://www.compcams.com/Company/CC/cam-specs/Details.aspx?csid=1084&sb=2
 
Where did you get that 54mm compressor wheel = 17 psi of boost?

That's a tiny compressor wheel for a gas motor, sounds like 12V Cummins stuff
 
Of all things it's off a Kia.:doah:, with a little research on forums says they hit 17psi. Not sure on variables.

This is probably going to end up going to someone else. Just don't know if it is worth my time or money.
 
Babaganoosh said:
Of all things it's off a Kia.:doah:, with a little research on forums says they hit 17psi. Not sure on variables.

This is probably going to end up going to someone else. Just don't know if it is worth my time or money.
Click to expand...
A Kia?:haha: A 4 banger? Your LQ4 is going to require a much bigger breath of air than a 4 banger. You would NOT build 17psi with your engine.
 
I just thought it would be neat if it was usuable. It isn't set in stone. I don't really know the legistics needed for it to work. I wouldn't want to toss 17psi of boost at it, like I stated around 5 is plenty....


Carry on...
 
17psi into a 1.8L (or whatever it is...don't care) will be like 3psi on your 6.0. At least until your rpms get high enough. Then it will probably become a restriction, which is like negative psi.

Now if you had 4 of them...

If you did find the right size turbo, you would need to scale the fuel and spark maps in the PCM up into the boost range to keep timing less aggressive and fuel a lot richer. People used to use stand alone timing and fuel management stuff to account for boost, but grafting that into the LS set up would be more work than just programming the right tables in. You should see what the range on the MAP sensor is - it might have to be swapped.

Of course if you want to run more and more boost, you have to look into swapping pistons, head studs, etc. I'm sure people have already figured out boosting LS motors by trial and error by now.
 
look up sloppymechanics in youtube, they turbo lots of stuff.. That turbo is too small.. turboforums has good resources for this info. I am considering the same idea for my sbc, but the general consensus seems that a gt45 or 74mm is a good all around charger. that turbo you have would be great if you had 2.. its also going to depend on the A/R and a host of other factors... if you use that turbo by itself get ready for crazy high IAT's and you better have fuel and timing set for early onset of boost prob at 1200-1800 rpm..
 
The ecm already needs programing for the cam, so adding in the turbo wouldn't be that bad.
 
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