L24 L26 L28 Dyno results

[Mr Camouflage]

Inspired by another thread asking about power output, Lets get this thread going as a reference to anyone asking the question "How much power can I get from my L series engine".

Rules.

Rule Number 1. If you have had your car on a Dyno post your power output here, Attach a image of the dyno result.

Rule Number 2. List what series engine you have and any modification you have done to the engine ( eg L28 , .40 overbore, type of cam (durations ), induction, compression, exhaust) as much info as possible.

Rule Number 3. Nissan L series 6 cylinders only.

Rule Number 4. Dont post if you dont have a dyno reading and an image of the reading to attach. We want this to be factual readings. And dont post to say this is a dumb idea, or this is a good idea, or whatever. The only following posts should be dyno readings.

So if you have had your Z car on a dyno, show us your results.

[Deus Ex]

L28 (F54) bored to 2.9

200B Flatop Pistons

balanced and blueprinted internals

Linished Crank

ported and polised P90

matchported to manifold

Triple weber 45 with 32mm Venturis

Lightened Flywheel

MSD 6a

FJ gearbox

8.75:1 cr

.318/.318 Cam (ex .012, opens@66 closes@26)

(in .010, opens@26 closes@66)

runs 110Kw @ wheels, 160 old school bHP

Hope this helps, im always on the lookout for these sorts of posts

[Bambikiller240]

HP figures are already available from a number of sources. Dyno accuracy varies, weather conditions vary, not everyone really knows what has been done to their engine.

Sunbelt and Rebello can tell you what various builds will net you.

[bob m]

Can you tell me the email address for these figures? I am in the process of building a 280 motor and am interested their recommendations.

Thanks

Bob M

HP figures are already available from a number of sources. Dyno accuracy varies, weather conditions vary, not everyone really knows what has been done to their engine.

Sunbelt and Rebello can tell you what various builds will net you.

[Murph]

Also that the american dynos are somewhat optimistic with their outputs.

[240ZX]

Interesting statement Justin!!?? What inspires you to suggest that American dynos are more or less than anyone elses dyno? Maybe we just have healthier engines.....most likely not. Besides, we're jacking up Mr. Camouflage's thread.

[Dan Baldwin]

Dyno sheet here: http://www.classiczcars.com/photopost/showphoto.php?photo=6881&size=big&sort=1&cat=500

For some reason I couldn't get the image location...

Anywho,

255 rwhp (on that day, anyway...)

NA 3.1 liter (KA24+.5mm pistons, LD28 crank)

Sunbelt ported and cammed N42 head

11:1 CR

45mm OER racing 3x2 carbs, 39mm venturis

Nismo 1 3/4" 6=>2 header, 3" exhaust

That's about it...

[Gav240z]

That's more like it pretty similar to the motor I'll be building.

[Deus Ex]

for sure, cant wait till i find an LD crank

[Ross260Z]

Block

L28 F54 block with siamesed bores, bored 3mm (3.1 L)

2.8 LD crank

89 mm pistons

240Z conrods

Aluminium flywheel

race type harmonic balancer

flywheel, crank, harmonic balancer, pistons, rods all balanced

Head

Not sure - either N42 or P90 - will check when I get an opportunity

Standard valves, ported

72 degree cam (mild spec)

Compression 9.5 to 1

runs on premium unleaded fuel

Ignition

CDI

Fuel system

Throttle body fuel injection

Wolf 3D Ver4 engine management

Exhaust

? headers through to 2 1/2 inch mandrel bend exhaust

148 Kw at the wheels (198 horsepower)

There are two dyno results - before and after some considerable tweaking of fuel and ignition maps. The top curves (after ) are the current power and torque curves.

[san_maru_zed]

Interesting statement Justin!!?? What inspires you to suggest that American dynos are more or less than anyone elses dyno? Maybe we just have healthier engines.....most likely not. Besides, we're jacking up Mr. Camouflage's thread.

It is relatively common knowledge that US dyno's often produce optimistic numbers. The types of Dyno's are actually different from Australian, the differences were explained to me before, can't remember though.

[Walter Moore]

Actually, I suspect that the difference isn't that U.S. dynos are "optimistic", just what they are measuring...SAE VS DIN VS BHP etc... for reference check out the following links:

http://www.nsxprime.com/FAQ/Miscellaneous/TorqueHPSpeed.htm

http://www.thepaty.plus.com/8v/top10/dyno.htm

And I am sure there are others.