Co-ordSport Performance Parts – Technical Blog

We recently had a customer enquiring about the noise coming from a Cusco diff when the vehicle was not warmed up…

The noise is completely normal, hat’s how a plated LSD works, there has to be some friction there. The oil reduces the friction to a moderate level, but it only really lubricates once the oil has got everywhere – it takes a while to get right in between the plates, etc. That’s why it’s tight when cold and noisier, then as it warms up and everything gets lubricated it is quieter (generally differentials lubricate on the basis of splashing – they are filled up to a certain point and as the crown gear turns around inside the casing, it splashes oil everywhere).

The noise can be the downside of having a mechanical LSD, the upside is having something that is strong and positive/effective. Helical gear / Torsen type diffs are quiet, but not as effective.

You have to use oils with special LSD additives for mechanical / clutch type LSD, as with normal gear oils the plates will really stick together very strongly and it will be very noisy.

Some oils may offer small differences in lubrication and noise, but it will all be marginal. Softer settings will reduce it too, but then the diff. will not be so effective. To be honest, Cusco LSD oils are one of the best in this respect. Cusco’s RS has lower initial torque, which will also reduce some of the noise.

There are some LSD brands that offer special coatings on LSD plates, such as KAAZ, that are quieter. But generally the noise just means it is working – later in life when the plates become worn they will not be so noisy, but the diff. will not be so effective either.

You can buy a range of our limited slip differentials and LSD oil on our PartBox online shop.

Read More…

• How KAAZ LSDs work
• How Cusco LSDs work
• How Wavetrac LSDs work

The Oe pump flows 1.6Lpm  @1bar  and 1.3Lpm @2bar and due to this low level, the capacity of the Oe pump will be reached around 160-170bhp.

They have fitted a gss340 Walbro pump into the assembly which can deliver enough fuel for up to 500 Bhp  and will work fine with the Oe inbuilt 3bar pressure regulator.

The new kit will be £89.60+vat RRP

Part Number : ITP273

Here at Co-ordSport we sell a wide range of vehicle components, for a large range of vehicles, those cars being used for all sorts of different activities. We try to stock and promote the best quality parts, offering the best value, at various levels, for differing requirements and budgets. Amongst those are JE Pistons, K1 Technologies and Wiseco pistons, which are all part of the Performance Motorsport (PMI) Group, a subsidiary of Dover Corporation, which encompasses many highly specialized companies in the field of motorsport engine components.

One of our very experienced specialist engine builder customers (a customer of and supplier to Co-ordSport for over 20 years!) recently built an Evo engine for rally use overseas, utilising Wiseco 1400HD pistons and K1T con-rods, the parts being supplied by ourselves. The engine produced good torque and power, but as is often the case, the driver/team constantly searched for some more extra advantage. They later fitted some lightweight pullies, and it is thought this may have affected the harmonics of the engine (whilst there can be advantages with less drag on an engine, you always have to consider that flywheels and pullies need a certain amount of weight to keep an engine smooth). Unfortunately, the block cracked, which allowed fluids into a cylinder and it is likely that this caused the engine to “hydraulic” (the upward bound piston, compressed the fluid in the cylinder/head chamber) and you can see below what happened to the con-rod and the piston.

It should be noted that the con-rod merely bent, and did not break and the piston also remained intact. Which has to be testament to the strength of these well known components/brands. Amazingly, the engine kept running and the team at first just thought it was merely over-heating due to a head gasket problem! But then we all know how strong that Mitsubishi 4G63 engine is – what a great design by MMC, parts for that engine are still amongst our best sellers! It’s legendary!

Some Pictures Shown below

 

A customer asked us recently about the different running temperatures of 72 vane discs. The customer was interested in the competition front brake kit for his new Evo X.  AP confirmed the APRacing race engineers generally see a 60/70°C drop in face temperatures when comparing the 48 vane and 72 vane versions, on for instance a sports prototype race car. But these cars use full brake ducting, which is not easy to implement on an Evo because the calipers are in the way, being leading mount.

 

 

 

Evo X AP Racing 48 vane competition kit plus similar kits for many other cars available at :: www.part-box.com

 

 

 

 

 

There are also many choices of disc face types from AP Racing.

- P=Plain ( no grooves or holes ) mainly used for road cars where low noise is vital.

 

- G4, G8, G12 & G24 = Grooved ( straight forward facing ). The number specifies grooves per face. Traditional style groove.

 

- CG4, CG8, CG12 & CG24  = Curved grooves ( backwards facing ) The number specifies grooves per face. Standard pattern.

 

- CR4, CR8, CR12, & CR24 = Curved grooves ( backward facing running out on O/D to clear debris. only use on thick wall discs ). The number specifies grooves per face.

 

 

 

RD = Radius Drilled ( cross drilled but with radiused run out to reduce noise & improve life compared with standard cross drilling. Usually used on road applications.

 

D & SD  = Cross drilled ( Drilled holes chamfered ). Still prefered with some pad materials but can compromise disc life.

 

GD = Grooved and Drilled ( usually used on road applications )

 

PG = Partial Groove. Shorter length groove pattern.

 

RA = J-Hook Design. Gives improved bite and debris clearance and reduces distortion/vibration, outer grooves run out to O/D. Thick wall discs only

 

GA = J-Hook Design. Latest design gives improves bite and debris clearance and reduces distortion/vibration, outer grooves do not run out to O/D.

 

RC = J-Hook Design. As RA design but with 3 hooks across face. The design gives improved bite and debris clearance and reduces distortion / vibration. Thick wall discs only.

 

Recieved some great feedback from a customer who has fitted a Deatschwerks universal fuel pump to his Mk1 Ford Focus RS.

” Over the past year the fueling of my car was all over the place and I couldnt get to the bottom of the problem. I was chatting with my Technician and he suggested that i should check the fuel tank for metallic swarf. So I removed the tank and took out the swirl pot and sure enough I did indeed discover some metallic swarf.

I contacted Paul Dolan with CoordSport and he sold me a Deatschwerks universal fuel pump which arrived very quickly to me in Northern Ireland the next day. The fuel pump is slightly bigger than the standard ford pump, so i set about modifying the housing with the help of Paul and Pete the Technician I have now achieved setup that works just as well as the OE does.”

Please note : the modification made was fitting a tee-piece and modify the shoulders of the pump and cut off where the fuel hose sits on top. The Tee-piece and the extra two brackcts are not supplied with the kit

“OE Blue top pump in swirl pot. ”

 

 

 

 

 

 

 

” Deatschwerks fuel pump sitting in swirl pot,as you can see there is a height difference. ”

 

 

 

 

 

 

 

” Inside of lid.”

 

 

 

 

 

 

 

 

 

” Had to modify where the shoulders of the pump sit and cut off where the fuel hose sits on top.”

 

 

 

 

 

 

 

 

 

“Ford have the main feed going back into the swirlpot for some reason, I ran it just going straight to the engine but had pick up problems. You can see the small plastic pipe which then goes into the swirlpot. The pipe that it goes onto can be seen in the 1st and 2nd pics. The swirl pot clearly needs the extra feed, to avoid the pump sucking the swirl pot dry.

 

 

 

 

 

 

 

” i used a tee-piece and fitted that and it all runs sweet now, with no pick up problems, even with the fuel gauge needle below the empty mark. ”

 

 

 

 

 

 

 

Deatschwerks Universal fuel pump available at :: www.part-box.com

Original blog with pictures can be seen at :: www.rsownersclub.co.uk

Genuine Ford replacement fuel pump filter available at :: www.part-box.com

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Luis Mota and Alex Ramos in Mitsubishi Lancer Evo IV won the first gravel event of the National Open of Rallys in Portugal, by only 0.5sec for the second classified.
With this victory, Luis Mota raises to 3th place in championship standings and now is 10 points behind the 2nd place.
The Competisport driver said at the end of the event:

It was not an easy win. The rally was well disputed, with several leading changes but in the end we manage to take victory. The car was flawless, and I have to thank the team for the great work they did.

Young Competisport driver Andre Mota was not so lucky:
For us the rally was a disaster. On the opening super special stage we lose a lot of time with a electrical problem and we did the last stage time. On the next day we start to push hard to recover lost time, but unfortunately on stage 5 we cut a corner too much and we hit a rock on the inside. After that, the car was really hard to drive, and we lost even more time.
Even so, we manage to get the 3th place on National Junior Championship and 11th on the Peugeot 206 cup.

With this result, Andre Mota and David Sousa are 2nd in the National Junior Championship standings and 6th on the Peugeot 206 Cup

Many people are having problems with the headlight washer jets on the Mk2 Focus RS falling out of there place. This only seems to occur on early Focus RS’s (’09Plates). This is because the early Mk2 Focus RS’s headlight washer covers do not have the 3rd (Middle) hole either side of the extension for the retaining wire/brace to clip into. The later versions have the retainer, you can upgrade/replace yours, with the new spec. Parts available from us as below.

Right hand side Focus RS Mk2 Headlight washer jet covers are available to buy online at -www.partbox.com

Left hand side Focus RS Mk2 Headlight Washer Jet covers are available to buy online at -www.partbox.com

Recent pictures of a satisfied owner’s Honda S2000 with the AP Racing Big Brake Kit and RAYS CE28N Wheels supplied by Co-ordSport:

1875 +50 Front (with 225/40R18 tyre)

1885 +47 Rear  (with 225/40R18 tyre)

Images are above.

Buy AP Racing Big Brake kit Online : Honda S2000 AP Racing Big Brake Kit

Buy RAYS CE28N Wheels Online : RAYS CE28N Wheels

 

The Nissan Navara is a little different to many other 4WD’s – the wheel fitment is more like regular cars, with a PCD of 6 x 114.3mm and a hub centre bore of 66.1mm.

Our RAYS dealer in France ‘ Urban Racing ‘ really wanted to fit RAYS wheels to his everyday driver – his Nissan Navara. The wheel he naturally wanted to use was from the RAYS range, the Gram Lights 57 JX6 – but that is only available in a PCD of 6×139.7mm, with a centre bore of 112mm.

A Quick discussion with our friends at ‘ TT Tools ‘ meant they machined up some precision spacer/adapters and Urban’s owner, Philippe, was able to equip his Nissan Navara with RAYS wheels – Perhaps the first Navara in europe, or even the world, with RAYS Gram Lights fitted ?

The above images show the car with the wheels fitted, the wheels and the adpater spacers.

Available in 16″ And 18″.

Available to Buy online : RAYS Gram Lights 57JX6 Alloy Wheels ( www.part-box.com )

Also Abailable Here : RAYS 57JX6 Wheels ( Gram Lights ) ( www.rays-msc.com )