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LQ4's Weaknesses

15530 Views 20 Replies 6 Participants Last post by  xXxSilveradoxXx
I'm interested in what the weaknesses are for the LQ4s. I am building an 03 twin turbo LQ4 for my Z32 and I'm wondering if I should replace anything. I am putting in ARP Main Studs, ARP Head Studs, ARP Rod Bolts, A.R.E. 4-Stage Dry Sump System, and an LS2 intake manifold/throttle body. I only plan to run 7-10 p.s.i. so I don't think I'll have any problems but I figured I should ask since the motor will be out for a while longer. Thanks guys!
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sounds like you got it pretty well covered for the 500+ hp itll be putting out. Dan ran his 5.3 for thousands of miles pushing out like 650 hp.
I would do forged rods and pistons but that's just me because you KNOW that your going to want more than 7-10 psi after driving it for a few months :imo
I would do forged rods and pistons but that's just me because you KNOW that your going to want more than 7-10 psi after driving it for a few months :imo
If I was going to throw a turbo/supercharger on any used motor over 50k Id rebuild it with forged internals.
Unless i couldnt afford it, then Id just hold off until it blew on me
I would do forged rods and pistons but that's just me because you KNOW that your going to want more than 7-10 psi after driving it for a few months :imo
good point...theres so much left with TTs than 7-10 psi...
I would do forged rods and pistons but that's just me because you KNOW that your going to want more than 7-10 psi after driving it for a few months :imo
I am a little worried about that but the way I see it is if I want to up the boost I'll pay for it, one way or another.... :rofl2:

If I was going to throw a turbo/supercharger on any used motor over 50k Id rebuild it with forged internals.
Unless i couldnt afford it, then Id just hold off until it blew on me
5 miles on the motor so I hope it will last a while... :cheers:
Why do twins when you could acheive 7-10psi with a single turbo??
your planning on sticking this in the Toyota? This is a wheelin vehicle right? Dont you think a supercharged LQ4 would do a lot better in that type of vehicle?
Why do twins when you could acheive 7-10psi with a single turbo??
:word: I was thinking the same. Turbo8, a guy on pt.net ran his 5.3 with 18psi for months with no problems
No, not my Toyota. I'm putting this one in my 90 300ZX. I'm going with twins because one day I will build a Warhawk to replace the LQ4.
well fuck the warhawk and just bore the LQ4 out to an iron block 408, twins and your looking at somewhere around 800-1000hp :imo
LOL! I've kinda been thinking about that 408 too. I need to decide if the Warhawk is worth it. Lucky for me I'll have some time to think about it! :D Oh yeah, I have another question, can you run in speed density with turbos?
LOL! I've kinda been thinking about that 408 too. I need to decide if the Warhawk is worth it. Lucky for me I'll have some time to think about it! :D Oh yeah, I have another question, can you run in speed density with turbos?
I dont think a $15k block is worth it, thats just the shortblock isnt it? You could do a whole TT forged 408 setup for around 7K
Why spend all that cash on studs and retain stock pistons? :hmm: I wouldn't be worried about stock rods, they're plenty strong.



Why not just stroke the VG30DET to about 3.3L and add a pair TD06-20Gs and you'll be able to make 1000rw with driveline and fuel supports. Not to mention be lighter in the front end. :imo
Why not just stroke the VG30DET to about 3.3L and add a pair TD06-20Gs and you'll be able to make 1000rw with driveline and fuel supports. Not to mention be lighter in the front end. :imo
Because I believe that the Gen III/IVs are better engines. Plus, the car was a N/A to begin with.
Because I believe that the Gen III/IVs are better engines. Plus, the car was a N/A to begin with.
smart man :shake:
Thanks! :shake: It is true though, more power stock, lighter, better design and capable of more power and torque. How could I go wrong? :bowtie:
Thanks! :shake: It is true though, more power stock, lighter, better design and capable of more power and torque. How could I go wrong? :bowtie:
the crank is capable of up to 1000hp by itself, rods and usually good up to about 600hp. I still think they have pretty much unlimited power if you have it tuned properly
Ohhh, I thought the vehicle was already a Twin Turbo.
the crank is capable of up to 1000hp by itself, rods and usually good up to about 600hp. I still think they have pretty much unlimited power if you have it tuned properly
:jawdrop: That's what I'm talking about!!! :worship:
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