KiwiBacon wrote:gary_in_nz wrote:actually just a slight off topic, but for 200 rwkw what sort of mods and coin goes into those trucks?? just curious as wondering if it would be cheaper to slap and ls1 in and get 300 rwkws with little mods (custome igntion mapping, extractors, cams and valves etc...)??????
Peak power measurements mean bugger all unless you just want to throw mud.
You'll get more torque from a TD42T with 20psi down it's throat than you will from an LS1 and it'll be in a completely usable part of the rev range.
This is a tough question to answer as a deisel has different power and needs to be driven differently. Saying you want 200rwkw is like saying you want 35" tyres. What type of power, how do you want it delivered, at what rev range etc etc. It is also important as to why you want the power. Driving in sand is way different to building a winch truck. A winch truck needs a lot of power to clean the treads but it also need the power to be controlable. Many times I drive mine with low revs and no wheelspin at all. On the weekend on one hillclimb I keep dumping all the boost to keep the wheels from spinning at all.
So an LS1 will give you cheap reliable power, a TD42 with 20 psi will give you more torque but less HP. An LS1 will give you a pretty wide power band and useable power, a TD42 will give you ab average power band but the power will start very low down. The TD42 will require more slipping of the clutch to build the boost etc for hillclimbs but once spinning will hold it easily.
Also not many LS1's are running 300rwkw with 35" Simex's! A 35" ET takes about 40kw to spin on a dyno over what a normal radial mt takes!!!!
Something like my truck (when it is going
) has 280rwkw with 35 Simex. It will spin from about 2500rpm and the more revs the more power. It is a completely linear power delivery. Low boost is better if you want boost as it doesn't cause lag etc etc. Is it better than an LS1 or a TD42. No it is different. There is no right or wrong just opinion and driving style. You can get the same power with a 2l but you'd need different gearing and driving style to use it.
So a well tuned V8 will cost about the same as a worked TD42. Obviously the deisel will cost more to mod but you already have it in the truck so that saves a lot more than most will believe.
So TD42
Turbo $1500-$2000
fuel pump $1500
Intercooler $2000
Tuning $500 to $1000
No allowance for manifolds exhuast etc.
LS1
engine $3000ish?
Adapters etc $1500
Retune/map $800 (I think)
wiring, radiator etc etc $1500.
cert $400
My truck
VH45 free
turbo $2300
manifolds etc $2000
ecu, cdi, wiring and tune $4500
intercooler and plumbing $1000
cert $400
Prices are estimates only but the real costs are more than most realise. It cost me about $1000 just for oil, water and air hoses and they aren't bling silicone either!
Lastly, what you want for a comp truck is completely different to what you want to do touring type 4x4. Not better or worse just different for a different application.
Nissan Terrano coilovers, turboed VH45, Safari axles, and some other stuff.
which makes me very happy. Being a later model evo i'll assume its genuinely had less thrashing than something like the T28 (gti-r).
