Litchfield supercharger

[Unleashed]

It is possible that they are making lower numbers at low RPM's due to the new intake manifold design with longer runners. Just my .02

[uspspro]

The sampling rate of the dyno combined with the response time of the engine, always makes for a ramp at the first ~200 rpm of a dyno pull.

The stock pull was likely started at a lower RPM.

I agree with many of you though. dyno operators should definitely start their pulls at 2000 or 2500, so the low end is shown completely.

[Litchfield]

It makes makes more power throughout the rev range
I'll try and get another graph up on our blog over the weekend. This is on quite a conservative tune so I expect the torque figures to increase low down as there's ign timing available.
Iain Litchfield

[ICantAffordAnLFA]

Happy to beta test this one

[DRACHENV6]

Originally Posted by Subie

I find it suspicious; I wonder if they're making less power down-low. It's impossible to tell due to the color scheme, but it looks like the stock car might be making a hair more power at 3000 RPM and I'd like to see if that trend continues farther down.

I agree. Full dynos are key in evaluating this. 0 to 4000 rpm are much more important than 4000-7600 on a daily driver.

[JoeBoxer]

Originally Posted by ICantAffordAnLFA

Happy to beta test this one

Me too, i would love to know what ballpark pricing is, plus or minus $4500?

[Sithspawn]

Originally Posted by nonicname

damn the torque to HP ratio sucks.
I care more for torque than HP. very nice but this isn't for me.

Hi...did you know that horsepower is a funcion of torque and rpm? The horsepower and torque is ALWAYS equal at 5252rpm. Therefore, if you want torque to be equal (ie 250, 250), then just set your redline to 5252rpm. If you want performance, on the other hand, then you need to start getting a better grip on what horsepower and torque numbers really mean.

When I see equal peak torque and horsepower on an engine redlining at a higher rpm than 5252, then I KNOW that torque is falling off as the revs climb...that is worse for performance in my opinion. What you really want is a flat (or close to flat) torque curve for as many rpm as possible leading up to redline. That is area under the curve and is good for performance.

Just remember, that peak numbers don't tell the whole story and that you need to look at the curve to understand what is going on and how that relates to what you will be doing with the car.

[Sithspawn]

Originally Posted by Litchfield

It makes makes more power throughout the rev range
I'll try and get another graph up on our blog over the weekend. This is on quite a conservative tune so I expect the torque figures to increase low down as there's ign timing available.
Iain Litchfield

Looking pretty good. Which Rotrex are you guys using? What is the boost and impeller speed if I may ask?

[MANDALAY]

Definitely looks like the C30 series as the rear is as big as the SC body.

I do like the set up with the reverse mount but the pipes definitely can be made better for a better look.
The tensioner belt to the right is the cause for the inlet pipe to be high to clear it.

Need to look if the SC can be lowered and a smaller tensioner pulley can be installed.

Also i would opt for a larger SC as its only 1 cm bigger.

I would make a better entry and keep the OEM air box or possibly use this tight silicon coupler for a cleaner look

[sw20kosh]

LOL at people expecting BIG TORQUE from a
A. high rev'ing free flowing 4 cyl motor
B. centri supercharger

Like it has been said already. Get a grip on what TQ and HP actually mean. When you have a much higher HP # than TQ that means your engine is a performance engine. You are generating good torque at high RPMS.

A torque monster on the other hand generates good torque at low rpms (means nothing for high performance driving) and then it sputters out at high rpms (bad). Only good for put put'ing around town. Terrible for the track or any high speed high performance driving.

[SnapOv3st3r]

Originally Posted by Subie

Why start the plot at 3000 RPM?

Have you ever seen a car dynoed in person?

[Subie]

Originally Posted by SnapOv3st3r

Have you ever seen a car dynoed in person?

No, but I've seen dyno charts that start at lower RPMs.

[dabocx]

Asked them on facebook what the car had besides the kit and they said "The car has our Milltek exhaust system with standard headers and fuel system."

[SnapOv3st3r]

Originally Posted by Subie

No, but I've seen dyno charts that start at lower RPMs.

When they operate the dyno, there is a set interval they start the reading at. That interval is usually around 3k rpms. The person inside the car runs it up to 3k rpms in said gear, and then they hit the switch and then start the pull. This is how they take their reading. Even if you seen a chart start below that, they don't do a dyno pull from idle. Possibly you saw a chart that was showing the view of power over mph. But you won't ever see a dyno pull starting at idle. Think about it, it's not possible if all cars are usually dynoed in 4th gear if it's a 5 speed or 5th gear sometimes if it's a 6spd (whichever gear is closest to 1:1). You don't accelerate from a stop light in 4th gear.