Supercharger, or single turbo, low boost ... advice!!
Posted: Tue Sep 30, 2014 2:23 pm
The Skyline is coming along nicely now, so it's about time I thought about the engine. I've bought a 1991 LS400 with the 4.0 1UZFE engine.
I plan to use the stock ECU, engine, ignition, everything etc for the time being due to costs. I want this one running asap!
I could just bolt the engine in as is and have a nice 260bhp.
I've bought a decent fuel system (fuel cell, twin pumps/filters, swirl pot, Aeromotive FPR, AN6 throughout) so that will take pretty much whatever I need for the time being ... but it's enough to support a few more ponies.
The factory ECUs will support 6-7psi of boost without modification, it's been done loads of times. So, I have two options, supercharge or single turbo.
Supercharger would be an M112 from a Jag or Rangey, including the chargecoolers. This will required a modified inlet plenum to take the chargecooler runners, not a massive job really but something I can't do myself. Might require a modified pulley, but probably not.
Turbo would be a holset HX35/40 or equivalent, and I was thinking a 50-60mm external wastegate. I can turn the exhausts manifolds round, and knock up a turbo manifold similar in design to a TVR V8 in front of the engine. I already have an intercooler that will work.
So, what do you guys think would work best? I'm not sure how the turbo/wastegate will work at such low boosts ..?
I plan to use the stock ECU, engine, ignition, everything etc for the time being due to costs. I want this one running asap!
I could just bolt the engine in as is and have a nice 260bhp.
I've bought a decent fuel system (fuel cell, twin pumps/filters, swirl pot, Aeromotive FPR, AN6 throughout) so that will take pretty much whatever I need for the time being ... but it's enough to support a few more ponies.
The factory ECUs will support 6-7psi of boost without modification, it's been done loads of times. So, I have two options, supercharge or single turbo.
Supercharger would be an M112 from a Jag or Rangey, including the chargecoolers. This will required a modified inlet plenum to take the chargecooler runners, not a massive job really but something I can't do myself. Might require a modified pulley, but probably not.
Turbo would be a holset HX35/40 or equivalent, and I was thinking a 50-60mm external wastegate. I can turn the exhausts manifolds round, and knock up a turbo manifold similar in design to a TVR V8 in front of the engine. I already have an intercooler that will work.
So, what do you guys think would work best? I'm not sure how the turbo/wastegate will work at such low boosts ..?