I think it would be benificial to have a thread of everyone who has a L28 turbo list what you have and your mods as well as when you get positive boost and how well you like it.
-turbo= t3/to4E 60trim compressorwheel, .63 turbine housing stage 3 wheel.
- How much boost you run and when it goes pos pressure to peek boost.
What im trying to accomplish is a nice and easy thread to search and have information on different turbo setups people are using on the L28 motor.
Please let me know if this thread has been started before as I dont want to duplicate one..
How this combination will perform is unknown at this time; however, this is what my rebuilt car has to date. Since you asked for mods, here are the relevant ones in regards to a turbo system. Yesterday, a new exhaust system was added to the list (noted below).
*Engine: L28ET w/ dished, hypereutectic-cast pistons (compression unknown) w/ FMIC. Oil cooler in the radiator; the latter was taken from a â€™81 turbo automatic 280zx.
*Turbocharger System: Garrett T3/T04E 50 trim w/ .63 a/r housing; downpipe (2.5 in.) with ports to an external TiAL wastegate (38 mm) and oxygen sensor; and new TiAL BOV (50 mm). EWG incorporated as it came from the provider. Boost controller will be added.
*Fuel Injection: AEM adjustable fuel pressure regulator; high-pressure EFI fuel pump (95 psi).
*Injectors & ECU are stock for now.
*Exhaust System: A new 2.5â€ high-flow/3-way Magnaflow CAT with Mandrel bend tubing to a new 2.5â€ high-flow Magnaflow muffler.
*HP unknown at this time.
She runs really nice and will be tested when I find a place to run her.
Great thread; it should provide lots of useful information.
F54 block bored 0.5mm flat top pistons, P90 head, N42 non webbed manifold, 60mm throttle body, ARP main, rod and head bolts. 2mm steel head gasket, turbo oil pump, 680cc low imp injectors, 3" IC pipe large FMIC, Holset HE351CW with enlarged internal wastegate, 3" stainless exhaust with single box at the rear, megasquirt II, EDIS ignition. No porting just standard head and manifold. 275rwhp 316lbft torque at 13 psi boost.
I'll add my current setup for the benefit of future engine builders.
HP: Did a quick dyno run on a Dynojet before my car was shipped from CA to FL. I had a igntion miss so I never got a clean run. I got only 1 run to about 5000rpm and netted 241hp 272 ft lbs. This was at ~10psi on CA 91 octane. I didn't log boost.
Overall I'm happy with this setup but of course I do have more mods planned.
Engine - F-54 block, cut for stainless o-rings, factory turbo head gasket. stock crank cut .10/.10, ceramic anti-friction coated ACL rod and main bearings, 88mm Ross forged pistons with Ti nitrided rings, piston crowns thermal barrier coated, skirts anti-friction coated. factory L-28 rods, balanced, beams polished, shot peened and bushed for floating pins. AZC cast aluminum oil pan.
Cylinder head - P-90, decked to ensure flatness, custom ground Isky cam, Isky springs, retainers and lash pads, Ferrea +1mm oversized stainless valves, head ported and flowed on flow bench, exhaust ports thermal barrier coated. custom intake manifold by James Thagard, 60mm TB, ported factory exhaust mainfold with innovate turbo "progate" wastegate adapter welded on.
Fuel System - 550cc RC engineering injectors, Aeromotive A-1000 fuel pump and boost referenced regulator, Aeromotive 100 micron canister filter at the fuel cell, aeromotive 10 micron canister filter before fuel rail. Jaz aluminum 15 gallon fuel cell with 1/2 feed and 3/8 return aluminum hard line.
Drivetrain - late 280ZX 5-speed (several!) old 11# tilton flywheel, ACT 6 puck, spring hub clutch.
this set up also made 297whp at 9 psi (base wastegate spring) and spools at around 3400 rpm, with full boost about 3800, and pulls hard to the 7100 rpm rev limit setting. I have no doubt there is quite a bit more power in this combo, but I haven't really felt the need to up the boost any...yet.
-Exhaust system-4inch custom dp to 3" exhaust. all mandrel bent.
*Boost: 10 psi to start with. Won't go more than 15.
*HP unknown at this time. Hoping to get around 300 hp at 10 psi.
Next year (when new budget kicks in) looking at meth injection, maybe a more aggressive cam, coil packs and that's about it. This is my DD so it has to be dependable.
-Boost= Positive pressure from start in 1st at 3000, (19psi) full boost just before 5000, redline 6500, no drop off in boost in gearshifts.
Wow guys this is some great information.. Keep them coming!!
HP: Last dyno run was 388 wheel ft-lbs and 326 whp. Timing was retarded too much, AFRs too rich and slight hesitation encountered, boost bled off to 15 psi by 5000 rpm (wastegate creep - going to spring the actuator arm). I am fully expecting over 410 ft-lbs and 350 hp next dyno session.
For anaybody who hasn't seen it, Bo (ktm) has a great set up. Definitely the model for me. And a beautiful engine bay!
Bo, FYI, took the IC piping apart and found several leaky connections. After we're finished installing the head etc., we're welding up a steel pipe system...keep those d**n couplers to a minimum.
Whitehead Performance P90 non hydraulic Head with many many hours of dedicated port and polish time then Swain coated the combustion chambers and exhaust ports. Dual race valve springs.
Boost will be set at 18psi for the street. Engine will be capable of a solid 400+ whp.
Gabe - GREAT IDEA! - this type of thread has been needed so others can read and learn.
After reading what has been entered so far, I have some suggestions that would make this a dynamite thread.
There doesn't seem to be a great deal of consistency on the part of Garrett turbo users to state compressor A/R and trim and turbine A/R and trim. I won't name names - it makes no difference at the start of the thread - they can all be corrected/added, but I for one consider this info MANDATORY for people to extract what we are aiming for from this thread.
For those of us who are using T3/T4 turbos, I think specifying ALL of this info is very important for highlighting spool and boost characteristics.
Pick a certain gear (probably 2nd or 3rd) and accelerate full throttle from 1500 rpm and see at what rpm boost starts and when full boost hits.
This will allow readers to compare apples to apples.
For Holset turbo owners, follow the same guidelines for determining onset of boost and full boost will allow readers at least a closer shot at comparing among Holsets and Garrett type turbos.
We MAY even want to post LINKS to pics of dyno runs in the thread - purely because I don't want to wait while pics load to read a thread - I'd rather click on the links to pics I want to see. I know I've done HOURS of searching (and re-searching - at some point if you read enough threads in a search you can't change pages again - you have to start over!) while researching what I want to do with my setup looking especially for dyno runs and HP/TQ info, that can all be found in ONE THREAD IF WE HANDLE IT RIGHT.
Hope no-one got offended by the suggestions to (hopefully) make this the best thread possible.
ENGINE: Stock rebuilt L28ET, 2mm head gasket, P90 head, stock intake, 60mm big mouth TB, stock oil cooler, adj. oil pump, electric fans, stock A/C.
FUEL INJECTION: MSnS, RC 750cc injectors, Palnet rail, Walbro 255lph pump, Aeromotive FPR. 100% Methanol injection with boost switch comming on at 14 psi.
EXAUST: 4 inch, with 4 inch diesel muffler.
Great thread. Anyone out there running a "blow-thru" or "draw-thru" carburated turbo set up on their L28?
Awesome Idea Brad!!.. Phil, I was waiting for you to chime in!!.. and Chris I was really interested in seeing what you had!! If we do this right, it would even be a good sticky!!!
Keep em coming guys and I think Brad is really onto something about the specific details on your Turbo.
I guess I don't spend enough time at HybridZ, I can't figure out how to edit my original post, as I forgot some stuff, not a big deal but it bugs me I can't figure out how to add it now.
This really has the potential to be a great thread, as the information for anyone who wants to build an L28ET is out there, when I started messing with them I didn't even have internet access and more than likely blew up a lot of stuff I wouldn't have had to trying to make the power I wanted.
blah blah, If your car was a girl, I would totally make love to it. people I have had the pleasure of driving Chris's car and it is awesome. I have to go to the bathroom now.
Hey, you know how everyone is saying, "this will be a great thread for someone who wants to build a turbo Z?"
ENGINE: f54 block with stock turbo pistons, n42 head with NA cam. ARP hardware.
NOTE TO ALL: I just finished putting this together, its one of the many things Ive been doing to my Z while Ive been away... It pretty much runs like crap and I need MS, or at least a turbo ECU/wiring harness. Got one for sale? 707-252-6070, please let me know!
This includes a harness, you could sell the stuff you dont need.
That turbo is jacked!!!! Did you look at the compressor wheel?!?!?!? Eff that!