Brenden Mock's 14.2sec Xt

[Guest]

This is off the Jim Mock Web Site to do with upgrades for the BA Non Turbo.

A lot gets said about Mock Kw's, anyone know what kind of dyno they use???

Have to say I'd love to go toe to toe with Brenden Mock's XT in a Dyno comp shoot out. (off NOS goes without saying)

From what I hear this car has done a 14.2sec pass and holds the record for a un-opened BA N/A 6.

Do take a good look at the Pod Filter inside the Standard air box, the plugs they talk about are interesting but as if you'd go a Uni-chip over a edit these days, this artical shows its age there.

Enjoy the read.

BA-LLISTIC

Auto Speed, 27th October 2004

We test JMM's bolt-on upgrade for the naturally aspirated Ford BA 4.0!

At a glance...

The first aftermarket development of the local Ford DOHC non-turbo six

Dyno-developed intake, headers, exhaust and UniChip kit

Up to 180kW ATW

Good on-road performance gains

Cost effective

With all the ranting and raving over Ford's BA XR6T and quad-cam V8 engines, the run-of-the-mill 4.0 litre DOHC straight six is being completely overlooked. But after a drive of a BA Falcon 4.0 equipped with Jim Mock Motorsport's DEV3 kit, we can assure you there is some go-fast potential!

With double overhead camshafts, infinitely variable cam timing, 24 valves and the latest engine management system, the BA 4.0 six offers substantial power from the factory. Peak power is an impressive 182kW at 5000 rpm.

After Ford's mammoth engineering effort with this engine, it should come as no surprise that there's limited scope for the aftermarket to achieve peak power – at least, not without adding forced induction or nitrous... However, it is achievable to increase the average power output and to sharpen throttle response.

And that's exactly what we found behind the wheel of the Jim Mock Motorsport BA Falcon XT.

The throttle response of the JMM BA Falcon (with its manual gearbox) is wonderfully crisp. In fact, we can't think of another car we've driven that offers better response – except, perhaps, the Mitsubishi Magna VR-X with manual trans (believe it or not, the Magna has stunning throttle response). The JMM Falcon's crisp throttle response is immediately followed by a mountain of torque, which is greatest between 2000 and 4000 rpm. Performance falls away toward 6000 rpm - a result of the standard camshafts.

Despite weighing 1700kg+ and with two people onboard, we hand-timed the JMM BA to 100 km/h in the mid-to-high 6s. That's decidedly quick and, unlike other modified performance cars, we found it very easy to get off the line. Just don't be too eager when you pop the clutch...

According to JMM, a stock BA Falcon makes about 140kW at the wheels on their Dyno Dynamics chassis dyno. Autos are generally a couple of kilowatts below the 140 mark and manual versions are a couple of kilowatts above. Once brought up to DEV3 spec, output jumps to a claimed 180kW at the wheels – just 8kW behind what they've seen from a stock XR6 Turbo under the same conditions.

The subtleties to the upgrade are also impressive.

The engine fires into life with just a tiny amount longer cranking on the starter motor and the high-flow exhaust is completely resonance-free and quiet at cruise. Give it a bootfull and the exhaust howls, but it's not offensively loud. The engine is also happy to trundle along in carparks in second gear with absolutely no surging, stalling or general misbehavior. Jim Mock suggests filling the tank with premium unleaded for maximum performance and, as we noticed, there's no sign of detonation.

Okay, so that's the result of modification - what exactly are the modifications?

The Jim Mock Motorsport DEV3 BA upgrade builds on the modifications involved in the DEV1 and DEV2 kits.

DEV1 begins with a 2 ½ inch cat-back mandrel exhaust with two large-body mufflers. The precise details of the system are a secret as DMM has invested a lot of R&D in achieving a broad torque curve without resonance or excess noise. Note that the exhaust for BA Falcon utes is slightly different to those for sedans and wagons.

DEV1 also includes a high-flow air intake, which comprises a Tickford over-the-radiator snorkel and a pod filter hidden inside the standard airbox. A custom plastic adaptor is required to secure the filter to the airbox. JMM defends their choice of installing a pod filter inside the factory airbox by citing their dyno development figures.

Another interesting component of the DEV1 kit is performance spark plugs sourced from America. Again, these are dyno tested.

The entry-level DEV1 upgrade for BA 4.0 Falcons retails for just AUD$895 (AUD$50 more for utes). JMM have seen this kit reach 148kW at the wheels – about 8kW more than stock.

DEV2 – the mid-level kit – employs everything found in DEV1 and adds JMM's latest “Scavenger” headers along with a high-flow cat converter and adjoining 2 ½ inch pipe. The headers are the result of extensive dyno testing and JMM tells us their design ended up being about halfway between their scavenger and race series headers used in SOHC 4.0s. We're told that the Ford six is extremely sensitive to combustion chamber scavenging. Note that the headers are also HPC'd to keep heat away from the nearby engine bay wiring.

DEV2 adds a significant AUD$1085 to the price of the DEV1 kit, bringing the total to AUD$1,990 (AUD$2,040 for utes). However, the power gain justifies the extra cost – JMM claim about 168kW ATW. That's a full 20kW more than DEV1 and 28kW more than stock.

Note that a slightly different version of this kit is also available – the DEV2A upgrade. DEV2A incorporates a 3 inch mandrel exhaust and cat converter (an early prototype is shown here), instead of the 2 ½ inch arrangement used in the usual DEV2 kit. The bigger exhaust adds AUD$310 and provides an extra 4kW, for a total of 172kW at the wheels.

DEV3 – the kit that we tested on the JMM BA Falcon XT – introduces one relatively expensive component. A UniChip interceptor module. JMM is tight-lipped about the specific air-fuel ratio and ignition timing changes they've made, but cam timing and electronic throttle control strategies remain unchanged.

In addition to providing improved drivability thanks to the UniChip, the DEV 3 upgrade ups the ante to 180kW at the wheels (see graph). The UniChip module contributes AUD$1400 for an all-up cost of AUD$3,550 (50 bucks extra for utes).

And the 3 inch exhaust upgrade? Well, at the time of writing, JMM were yet to see any extra power over their 2 ½ inch system. At around 180kW at the wheels, we're told the DOHC Ford six is crying out for a new set of camshafts. JMM is currently working on this.

For now, though, the DEV 3 kit is a very well behaved and cost-effective upgrade for anyone with a naturally aspirated BA six. Fear not – you are guaranteed to feel the difference over a stocker!

Ford's atmo engine does have some potential!

Article By,

Michael Knowling

Auto Speed,

Edited 26/12/06 07:04 AM by NOS XR

[Guest]

They seem to be on the money with the stock numbers, but that only a exhaust system a tune and a filter to add some 40rwkw, has anyone done it?

[y-b-jls-4]

Fantastic article for us n/a ba-bf xr6 owners. $3500 is nothing for all that power I'm hoping to give them a visit soon. That power figure will be even higher on a bf as they had 190kw to start with....

[Ninka]

Fantastic article for us n/a ba-bf xr6 owners. $3500 is nothing for all that power I'm hoping to give them a visit soon. That power figure will be even higher on a bf as they had 190kw to start with....

←

Sorry mate, but as the engine is the same 4 ltr unit as the BA, all Ford have done is extract a little more by increasing the efficiency of what is available, thus leaving LESS to the tuner to extract

[Guest]

Sorry mate, but as the engine is the same 4 ltr unit as the BA, all Ford have done is extract a little more by increasing the efficiency of what is available, thus leaving LESS to the tuner to extract

Best I can tell your right on the money. Anyone tuned a BF and got bugger all???

[SavageF6]

If what they did to my EF is anything to go by, these guys know their Ford 4.0 N/A

Edit: in fact the car goes so good, I've still got it. Their cams and race headers are worth far more than what they charge.

Edited 26/12/06 12:00 PM by Spruce

[bfnaxr6]

Sorry mate, but as the engine is the same 4 ltr unit as the BA, all Ford have done is extract a little more by increasing the efficiency of what is available, thus leaving LESS to the tuner to extract

Best I can tell your right on the money. Anyone tuned a BF and got bugger all???

←

Autotecheningeering got a hold of my BF xr6, put a set of paccie headers and 2.5" stainless exhaust and pulled 154rwkw on a dyno dynamics, went back for a tune a couple of months ago and grabbed another 15kw from it for a total of 169rwkw. quite a healthy boost over standard.

[falcon73]

The pod in the filter is basically the same set I have but I have added a 3 inch smooth intake pipe and of course different brand filter called DRIFT same as k/n apparently, good gains just by doing this then add the exhaust from an xr8 pacies hi flo cat an pwoer jump is great, havent got any tunes yet will take a while.

Any type of info on the n/a build up is good

Gives good ideas I have done alot myself to keep costs don but anyway you look at it still good value for money for the dev3

[Guest]

Autotecheningeering got a hold of my BF xr6, put a set of paccie headers and 2.5" stainless exhaust and pulled 154rwkw on a dyno dynamics, went back for a tune a couple of months ago and grabbed another 15kw from it for a total of 169rwkw. quite a healthy boost over standard.

When the BA is said to have 8kw less than a BF I had my system fitted and gained 156rwkw (with pod filter and 75mm TB).

Edit and tuning netted 14rwkw more. Do the math = 170rwkw.

I can't wait till the next dyno comp at Autotech, the dyno there seems to run at about the industry standard I should see numbers in the 170's + more.

After I fit my new balancer I'll talk to Con about Cams.

[YPURV4]

My mate has a AU N/A with a dev 4 kit I think he has 150 rwkw but its not just the rwkw number that make's it good it is how they have set the car up e.g. diff ratio's,cams,tranny when my T was stock with 190 rwkw his thing was giving me a run for my money.

You see I had more power but the way his hit power and how the hole car was set up it was very quick car, jim mock do great work not just with N/A either look at brendons EF turbo with 600hp.