What kind of power can the block and head take if I have modified them both substantially.
block :
9:1 Wiseco Pistons bored (.040)
Eagle Rods
head gasket:
cometic (.074)
ARP Head Studs
performance SS valves
manta part performance valve springs
I have a T3/T4 turbonetics Turbo that im putting on and I am modifying the fuel system with the ACDELCO/VORTEC sway from the Blazer's, 550 CC Injectors, FMU, FPR, and Apexi SAFC II.....
Also would like to know with those mods what kind of boost the engine can handle
-Russ
talk to 98redcavz24 hes running about the same setup, hes aiming for at least 400whp although many here seem to be skeptical. hell even make that, ehich really shows the weakness of the ld9 powrplant apparently
It is a shoot in the dark, because your tuning options are VERY limited. First piece of advice that I suggest you follow with great following capabilities, ditch your tuning plan witht he SAFC and FMU. To go with those is nonsense if you want a high horsepower motor. A year ago, sure, because it was either that or a standalone fuel system, but now, there is a great thing called HPT. For 650 dollars, you have basically unlimited control of your ECM. No wire splicing. No late hours studying wiring diagrams, nothing. Plug the cable into your Diagnostic port in the cab, and with limited tuning knowlege, you can get yourself a sufficient tune. Better than what you will get with what you want now. Those 550's will idle like crap, you will foul plugs, you will wash your cylinders with fuel, unless you get HPT where you simply enter an injector constant, and wholla, with a few attempts you can be idling 550's, 750's, 1000's at 14.7 afr, like stock. Next piece of advice, your dealing with an LD9, oiling is your enemy. Stock LD9 oiling system is hardly efficient for itself in stock form. Many people have spun cam/rod/main bearings because of this Devil. Now at minimum, send your crank to JBP and have it cross-drilled, and pick up their high pressure oil pump. Other than taht road, the only other path you can take is if you can find yourself a machine shop that will do the 2.3 oil pump conversion. Next thing is, dont rely on Mantapart to send you your valve springs. Get the SS valves from carcustoms.net, and find some 2.3 HO valve springs and retainers. I think their spring rate is something like 20 lbs higher than stock LD9 springs. There was a thread taht had something about this a couple weeks ago. Now you have some decisions to make as far as cams go. Easy route...stock. Little more difficult..."secret cam swap"...which is waht I am using on my boosted motor. Now since you have your oiling system a step higher with what I previously said, find a 2.3 HO motor, and steal the Cam towers/lifters/cams from it. Sounds easy right, bolt on cam towers with cams and your all ready to go, wrong. The reason why more people arent running the HO cams is, for one, oiling, but you will ahve that covered, number 2, tunability and stock rev limiter, you have that covered with HPT as well, number 3, is that on the 2.4 the intake cam has a hex head machined into it to drive the power steering pump, so you will have to find a machine shop to machine that hex head in there, or you will ahve to switch to a 2.3 power steering drive. Hoepfully by this reply I either discouraged you from doing it the easier way and blowing it up, or made you realize it isnt that easy to take a N/A motor, throw tons of boost at it, and expect it to live forever. Oh yes, another thing with the LD9, is the PCV system, but, there has been a lot of talk about it on here, but basically if you dont take care of it, it will pressurize the crankcase, and pop oil seals in the turbo.
Does JBP have a website you could link please....
pete did the 2.3 oiling conversion as well, i modded his oil pan fo rhim. hes also doing the "secret cam swap"
any way you slice it, its a @!#$ ton of work for a meager end result imo. but, im hoping petes car will make the power he wants, i know his turbo kit will be up to the task .
i havent gotten into it further than i modded his oilpan by extending it 1 inch.
as far as i know its a pain in the ass. like i said the amount of work hes dumping into this ld9 doesnt seem worth it at all for the end result he will achieve.
Quote:
FMU, FPR, and Apexi SAFC II.....
sell that and you have about half for hptuners
2.3 oil pump swap is pretty easy and super cheap. Pump/windage tray/gear = $200
get all the extra holes drilled/welded = $75
oil pan should be modded (1" is what people do) but 1/2" would be enough, I actually put a factory one on and it cleared, but was pretty close.
Secret cams are a good addition, but a good tune would be worth more.
I would say, do the 2.3 oil pump swap, and if it is one of these
1)secret cams, FMU, FPR, APEXI ($400-$500)
2)hptuners ($500 would take care of everything ^^ would plus more)
#2 would be my choice to ensure reliabilty.
HP Tuners | Garrett T3/T04B | 2.5" Charge Pipes | 2.5" Downpipe | 650 Injectors | HO Manifold | Addco front/rear | Motor Mounts | HKS SSQV | Spec stage 3 | AEM UEGO Wideband | Team Green LSD | FMIC | 2.3 cams | 2.3 oil pump swap | 280WHP | Now ECOTECED
Interesting thread.... first of CCFAB, I was one of the few who said Pete is gonna have a bit of a hard time.... and it's not that his motor can't Make that power. I know he's gonna hit 400 whp... I just wonder if he'll be able to hold it. I know he's going budget on a few items, I just hope they can take the stress. I talk to him on a very regular basis.
Russ - a lot of decent info above... as mentioned you haven't really touched the oiling system at all.... not good.
Secret cams are nice but they are an extremely minor gain and I wouldn't use them on a turbocharged application if I had the choice...
Your fuel system is SO 2005... *laughs* Blazer pump, adequate injectors and HPTUNERS will allow you do do what you need.
Boost will be dependant on a few things:
1 - The oiling situation. This absoloutely has to be addressed
2 - How you setup your fuel.
3 - Spark. You have to be able to control it and apply it without boost affecting its application
Those are just 3 main points.... there are more but I won't get into them. The point is, the LD9 is only as good as its oiling system which, stock, is poor. The engine likes to eat bearings like pac-man on speed at high RPM's... adding more strain into the oiling system (turbo) just isn't gonna help that...
With the head studs, gasket and valve springs I would assume the engine could "handle" a decent amount of boost.... the question is what have you done ot the head to help it deal with all of that boost? Furthermore, level of boost shouldn't be a goal... Horsepower should be.
How much horsepower can that engine handle??? It all depends on how you tune it and set it up.
Lots of grey areas.... nobody here can truly give you an answer, all we can do is suggest ways to avoid physical breakage due to parts. The tuning aspect is up to you.
-Chris-
-Sweetness-
-Turbocharged-
Slowly but surely may some day win this race...
petes car should, hes got a built tranny and a shop tuning it who has been using hptuners for yrs.
they are responsible for some of the fastest cars on the east coast. so i know his tune wont be the weak point.
