[pir4teParticipant Mallala640 HP hyper-cruising SS-V Flagonwagon View build HERE Member since: March 2, 2015 Posts: 154]

Nah the video simply demonstrates that a flex fuel sensor can not distinguish between ethanol and water.

No big deal really, up to 8% water in the flex fuel mix makes more torque, higher octane, runs cleaner and cooler, but that’s more than a gallon in a tank.

Naturally as-pirated, all-motor.

[pir4teParticipant Mallala640 HP hyper-cruising SS-V Flagonwagon View build HERE Member since: March 2, 2015 Posts: 154]

VRSenator065 wrote:

cava454 wrote:

and then scratch their heads when a cam only VE runs a high 11

I recon a high 11 in a 2 ton cam only VE is pretty good. Trouble is these days with so many guys running 9s and 10s the regular joe thinks running a 10 is easy which it isnt. Not only does the guy running the high 11 in his cam only VE scratch his head, he usually mutters “it would have run better but I just couldn’t get traction”. I mean as if the guys running 9s and 10s don’t have problems with traction…

True. A lot of good info in that doc. particularly the factor of force in weight over the rear wheels to increase kinetic force vs static, and the different ways to look at diff gear choice to suit engine and driving need.

Good acceleration doesnt necessarily always follow an ill-timed torque dump.

Naturally as-pirated, all-motor.

[pir4teParticipant Mallala640 HP hyper-cruising SS-V Flagonwagon View build HERE Member since: March 2, 2015 Posts: 154]

cava454 wrote:

VRSenator065 wrote:

Yea, all that. I have said all along, dyno numbers mean nothing. Not one person who has ever been in this car have not looked at me after a stab of the throttle and not said FUCK. From guys who know nothing about cars to guys who themselves run 7s dragsters. Dont care, its all about area under tthe curve. This car makes 80% of max torque at 2000 rpm, if you dont understand that i give up and frankly don’t care. Its a genuine street legal car. May not post the dyno sheet, why does it matter?

Engine dyno (can you get that being crate motor)? and moroso are better indicators of power

Guys the one thing a dyno does measure properly is torque, the one thing the ECU needs to do its job is accurate torque reporting.

Personally kW don’t matter, they are always an educated guess. Whereas you can rely on 1:1 non multiplied torque data from either source when plotted against RPM and do several crosschecks for realistic BMEP range given compression, fuel or airflow readings, baro, etc.

I agree it is a tuning tool, and yes it is possible to produce 1000Nm from a 454, just asking (sorry for appearing rude) for more detail please, like where is the peak torque in the range and does it ramp or drop off differently to a small block 

Naturally as-pirated, all-motor.

[pir4teParticipant Mallala640 HP hyper-cruising SS-V Flagonwagon View build HERE Member since: March 2, 2015 Posts: 154]

Torque curve:

Basically means it can launch from idle or haul up a hill at 100 mph in third gear, if needed 

Naturally as-pirated, all-motor.

[pir4teParticipant Mallala640 HP hyper-cruising SS-V Flagonwagon View build HERE Member since: March 2, 2015 Posts: 154]

Let’s see the actual engine torque curve, please, so we can benchmark yoir setup.

Naturally as-pirated, all-motor.

[pir4teParticipant Mallala640 HP hyper-cruising SS-V Flagonwagon View build HERE Member since: March 2, 2015 Posts: 154]

Come on man, that’s all Max Torque at the wheels [uncorrected dyno rollers], don’t fall for that!

Check actual crank torque corrected 1:1 so we can see whatchu got 

What’s the engine torque the ECU is reporting at which RPM… 

Forget the wheel or crank HP we can work that out!

Naturally as-pirated, all-motor.

[pir4teParticipant Mallala640 HP hyper-cruising SS-V Flagonwagon View build HERE Member since: March 2, 2015 Posts: 154]

VRSenator065 wrote:

So I am guessing most people on here know but this Saturday is the S.A. Cruise for Charity run. It starts with a car display at Glenelg at 2:30 for a couple of hours, then a cruise ending with another display at Elizabeth Oval. If anyone from here is at it please come up and say hi

How’s your air con coping   ? Are you running OEM pump?

It’s 38° here in Sydney metro avg off-idle speed 18kph in a 2100kg black wagon  Waeco flat out to keep whites cool.

Before ethanol and VVT I used to feel pangs of guilt dealing with dead butterflies, bees and stuff off my windshield coz ma 700 CFM V8 CO2 generator, now they stop and blow me kisses [before I spray them with BugOff] 

Naturally as-pirated, all-motor.

[pir4teParticipant Mallala640 HP hyper-cruising SS-V Flagonwagon View build HERE Member since: March 2, 2015 Posts: 154]

Black Pearl on the shore at Midnight:

Headphones / sub and volume recommended 

Naturally as-pirated, all-motor.

[pir4teParticipant Mallala640 HP hyper-cruising SS-V Flagonwagon View build HERE Member since: March 2, 2015 Posts: 154]

sands vs wrote:

I was always under the impression that after the cats was also bad as it cleans up things and can give an inaccurate reading?

Same, with “really effective” cats in place there is some argument whether readings would have positive or negative effect post cats even (I believe there is less free O2 – richer than pre).

Threads in efilive, LS1, and turbo forums thrash out that theres less than 4/5th (approx) of bugger all in it.

Naturally as-pirated, all-motor.

[pir4teParticipant Mallala640 HP hyper-cruising SS-V Flagonwagon View build HERE Member since: March 2, 2015 Posts: 154]

Anonymous wrote:

Always been told after the cats is wrong, been tempted to run one before and one after to see if this is a myth.

Yeah from efilive site worst case scenario is 1%-2% (0.01-0.02) and others swear nothing. Every tuner I’ve met uses contraption after the muffler in the tips.

Naturally as-pirated, all-motor.

[pir4teParticipant Mallala640 HP hyper-cruising SS-V Flagonwagon View build HERE Member since: March 2, 2015 Posts: 154]

This look about right?

Naturally as-pirated, all-motor.

[pir4teParticipant Mallala640 HP hyper-cruising SS-V Flagonwagon View build HERE Member since: March 2, 2015 Posts: 154]

The duration of the cam when parked (not active) is simple numbers, but with VVT it is not a static thing, and people’s eyes glaze over when I explain combustion phasing in detail, so here’s a quick animation:

Whilst the engine is building torque duration is skewed to early induction, and a deliberately short expansion – high pressure (boost).

Compression duration is lowered to max out the torque a bit but mainly to promote RPM by reducing pumping losses, then overlap scavenging joins in.

Spinning from just below peak hp to redline the duration focus is maximising charge momentum into power vs compression.

Naturally as-pirated, all-motor.

[pir4teParticipant Mallala640 HP hyper-cruising SS-V Flagonwagon View build HERE Member since: March 2, 2015 Posts: 154]

Yes thats the best, others approximate BSFC.

Naturally as-pirated, all-motor.

[pir4teParticipant Mallala640 HP hyper-cruising SS-V Flagonwagon View build HERE Member since: March 2, 2015 Posts: 154]

Kroozer wrote:

How do they actually work? Are they a one use thing, do you have to recharge them?

Thus bro sez ut bihst:

Once engine oil pressure is greater than the preset pressure of the (air side) of the piston, it is forced back and the (oil side) chamber is filled with a fresh charge of oil. So once set it is automatic.

Naturally as-pirated, all-motor.

[pir4teParticipant Mallala640 HP hyper-cruising SS-V Flagonwagon View build HERE Member since: March 2, 2015 Posts: 154]

VRSenator065 wrote:

I reckon they are a very good/cool idea if you can’t afford or don’t want to go dry sump. Pirate do you run the solenoid on it linked to ignition so it truly precharges the oil circuit prior to start up?

Yes it is wired hot from the ignition circuit, via an installed oil pressure switch on the oil bypass adaptor plate

Oil pressure switch to limit solenoid discharge pressure bandwidth to < 35 psi.

which powers a hydraulic solenoid valve.

Surprisingly the hydraulic solenoid valve is made by an Aussie company and used by both Accusump and Moroso.

Currently mounted under front fogs and lower intake with an access cover (not shown)

So everytime before cranking I pause for five seconds or so to allow the pressurised piston to inject a few litres of oil through the system at a head pressure beginning around 30psi.

Makes for quiet and easier starts with high compression.

Also acts as a pressure damper, like a shock absorber evening out oil pressure pulses and maintaining pressure when backing off.

Naturally as-pirated, all-motor.

[pir4teParticipant Mallala640 HP hyper-cruising SS-V Flagonwagon View build HERE Member since: March 2, 2015 Posts: 154]

Have you tried PipeMax?

Naturally as-pirated, all-motor.

[pir4teParticipant Mallala640 HP hyper-cruising SS-V Flagonwagon View build HERE Member since: March 2, 2015 Posts: 154]

Yesterday I saw a Delorean coming the other way along the Bracken Ridge Wetlands area… a most unlikely and welcome sight and freaky because today is the day Marty, Doc and Jennifer arrive #BacktotheFuture

So yeah #science, iPhone, NetFlix, VVT and shit but time’s up where the fuck is my hoverboard? #BacktotheFuture

Naturally as-pirated, all-motor.

[pir4teParticipant Mallala640 HP hyper-cruising SS-V Flagonwagon View build HERE Member since: March 2, 2015 Posts: 154]

Dan811 wrote:

Is that first picture a Nos Fogger???? And I thought dry sumping takes more than an accumulator, doesn’t your oil pump need to be changed out altogether? Watching this closely…

Three litre piston type oil accumulator

Nah not N2O, it’s a pressurised oil reservoir that injects directly into the lube circuit when pressure drops below 35psi.

It works well for pre-oiling on startup and burnouts and racing circuits generally, a poor man’s dry sump because is an auxillary damper utilising the existing oil pump.

I say mostly dry sump because the sump is still ‘wet’ otherwise different means to same end.

Can boost a GenIV with 40% more oil on demand. I paid about $1000 prolly too much but I think is a bargain insurance bet 

Naturally as-pirated, all-motor.

[pir4teParticipant Mallala640 HP hyper-cruising SS-V Flagonwagon View build HERE Member since: March 2, 2015 Posts: 154]

Even the “always 85%” ethanol is only ever 81%-83%, so I ‘splash out’ on high grade alcohol – e95 – on weekends:

Huge difference at 14:1, 20 litres costs $60 and a trip to Bunnings

For perspective, the difference between ULP91 and PULP98 is seven RON points. Take that difference, multiply it by 3x … this juice is 120 RON… yes that’s 21 points higher octane than PULP98.

Naturally as-pirated, all-motor.

[pir4teParticipant Mallala640 HP hyper-cruising SS-V Flagonwagon View build HERE Member since: March 2, 2015 Posts: 154]

I prefer t’ cut me own wake when it come t’ mods, an it serves me justice. Here be me dry sump fer SS pirates… Arrgh!

Naturally as-pirated, all-motor.

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