Search results

It was a great weekend! Nick did well, only giving way in his class to our 205 (which is alot further down the development road and lighter) and certainly finding more confidence and rhythm in driving it. Quick clip from between the hairpins: http://youtu.be/1sbUmeCmBVk

Lots of good saloon entries for Wiscombe next weekend, should be a great watch!

I don't make manifolds, I only design and develop them for my needs. The Clio one you're probably thinking of is a Pure Motorsport product, I helped with the design, but it's their product, made by their supplier to their design and as said a one off will be dearer. If you're around Southampton...

He's got a Sadev H dog box, hopefully will be ok

Nick's Sprint car

They always do on the engine dyno with steady state loading, motorised throttle control and a huge water brake as a flywheel. Reserve judgement until it's heard in the car ;)

From seeing both engines within a few days, I don't think Ian's and this one do follow the same lie below 6k, hence my early reservations about Ian's dyno results. Part of the reason I referenced that 205 engine, is that it feels massively stronger and cleaner from low rpm than Ian's. As I said...

I'm not that confident about the comparability of the dyno figures for Ian's engine, John read and I only ever record mean observed torque figures on that dyno and convert to power ourselves (power=(torque/5252)*rpm), the software on that dyno does not accurately or consistently convert to power...

Entirely reshaped ports and chambers with the piston crown designed to suit, larger valves with thicker stems (for increased reliability/durability) on oversize valve seat inserts.

Will there be a bus laid on to get back to the topic? :p

That's an epic capture Ian! It's not unusual for engine note to change with cleaner mapping. With the engines I know well I let my ear tell me what the AFR should be at various speed/loads; the JRE Duratecs sound like the throttle's opened another 10% when they hit the sweet spot! Little...

Good video, very neat :)

Building an engine this far away from the OE spec is always going to mean a reduction in rebuild intervals. Rebuild/inspection scheduling IMO should be done on the basis of prevention, rather than cure. Picking up early signs of wear or fatigue can often prevent expensive failures, which vastly...

The chap's that failed, was home built, has just been rebuilt from a previous failure, both times using poor quality rods and pistons. Not really relevant to a discussion about a professionally built high precision engine with custom designed high quality components, except to illustrate the...

I can't comment on Nick's plans for pricing, but it will be reasonable in the context of the design and development that's it this engine; it's a mile apart from the off the shelf shopping list engines most companies produce, almost every new part has been made specifically for it. As regards...

I was following the live timing and once you got going you were taking time out of the Corners, which I was very glad to see, then saw the weird times and wondered what was going on. They had penalties early that got removed too, all very odd! Currently they're 4th and 5th OA, 3rd is Richard...

I'd strongly recommend going oversize to get the correct clearance, new pistons/rings in old bores with just a hone is a bodge, it will almost always end with early wear and short life expectancy.

You need to be very careful about welding the head, the heat could easily pull all that line boring out of true... very careful. Great to see though, E46 M3 style valve operation.

To quote our friend Mr Read: "It's not luck, it's engineering"

Fair enough :D This is getting a bit into clutching at straws, because without seeing everything together, in detail; observing this is not a whole picture. The pick up may already have been choked before the ultimate failure and provoked it, that's a common cause of oil starvation in any...

Here are a couple of examples, on the left is a British made good quality rod (Robson for 1600 Zetec SE), with untagged bearings that span after oil pump failure and the driver kept going back to the pits. The rod stretched and bolts bent, but didn't fail, because the cap held together. On...

Agree. I don't think bolt failure would be primary in this case and "bolt failure" with these budget rods is usually a mis-diagnosis of the cap splitting, due to the poor design/manufacture around the bolt seat creating a stress point. The broken bolt(s) always bent, which indicates bending...

I'm very proud of the work I do with John, I'm sure you can understand why! The reason he brings me in to map with him is that we achieve exceptionally crisp results working together, the development cycle benefits both of us; but we operate as a bubble and nobody else gets access to the...

I've got to clear that one up Ian! Alvin emphatically does not do John's engines, we often hire Alvin's dyno, but it's only John and I who map the engines, there's an important distinction to be made.

This has gone way off topic and I'm probably best advised to leave it as it was, but I think you've missed the major point here Dan. Chip says he'd hope to get close to what one of my engine with the same components; well there is most of the difference, you can't buy most of the components I...

Torque means you can develop power at lower rpm. Making an engine breathe better without attention to the effects of pulse tuning, will give you an engine that needs to rev to make power. Make an engine breathe well, with effective pulse tuning and a good burn, you'll get good power at lower...

Don't want to de-rail here too much, but to be clear; Dan@519... are you talking about the TU5J4 and JP4? If you are, then I'd agree that most people seem to hit the wall at about 200bhp, but my top spec engines are genuinely getting over 220bhp and 150lbft, on our calibrated and DIN corrected...

None of our guys have built the car from scratch to be a front runner, they've all started out basic and evolved the car. That's the way to do it really, the costs don't seem so bad over time and you get the most out of the car through each development phase and learn it better. Jason Cooper's...

List 1B are slicks to Combe Saloons drivers! Typically worth around 1.5-2 secs on a race lap of Combe we've found. Will's 1:14.397 was on secondhand Dunlop 180 width 15" A46D slicks. There are circa 500bhp 2 litre turbo cars running in that championship, that are regularly beaten over the line...

Can I concur with that of sorts? I always feel that it's important to remember that it is a leisure activity, to be enjoyed! Things do get pretty serious in the circuit championships at the front and the racing is often more enjoyed in the mid-field to the back, where there's less pressure to...