Bamford Rose engine wins AM Global challenge

[yeti]

Mike and the boys at Bamford Rose - you should be justifiably proud of yourselves; unless i am much mistaken Bamford Rose engines have now powered the Euro GT4 winners, the UK GT4 sprint winners in 2010/2011 and now their 4.7 V8 engine has powered the winner of the Aston martin Global Challenge. Nothing proves reliability like racing and it looks like no-one can touch your V8s and their special sauce

Link to Mike's area above with the full results and some pictures of the WINNING car

http://www.pistonheads.com/gassing/topic.asp?h=0&a...

[yeti]

stevewushu said:

Yeah but V8s are for kids right Yeti....

Oh there are grown up versions though Steve... a 4.7 Bamford Rose hand-made engine for example...

[yeti]

yeti said:

stevewushu said:

Yeah but V8s are for kids right Yeti....

Oh there are grown up versions though Steve... a 4.7 Bamford Rose hand-made engine for example...

This for instance, is an engine for a grown-uup

[yeti]

George29 said:

stevewushu said:

Yeah but V8s are for kids right Yeti....

that's why the DBR9 had a V12. The V8 racing cars, just like the road cars, are an entry level

Unfortunately the V12 can't be homologated anymore for the big GT stuff hence using the V8 Vantage these days. GT1 no longer exists, the epic Le Mans battles of Aston vs Corvette vs Ferrari 550 are over :cry

Like it or not, the Vantage GTE now represents our hopes at Le Mans. A well deserved podium last year was great and could easily have been a win, but that's Le Mans for you

[yeti]

George29 said:

What about the V12V GT3?

What about it? The V12 is no longer homologated for Le Mans.

The V12 will however be eligible to run in all FIA GT3 and national GT3 championships, the Blancpain Endurance Series, Nürburgring Endurance Cup and the Nurburgring 24 Hour.

[yeti]

Vantagefan said:

Don't worry George I have it...

V8 GTE:
1,000,000bhp
2,000,000nm
400kg

Good one

Weight is irrelevant as there are minimum weight requirements for the classes so they're all stuffed full of lumps of lead to increase ther weight to the minimum standard.

Power... Probably also boadly similar as they all breathe through air restrictors so that no car should have a power advantage.

Torque and reliability due to being unstressed on the other hand...

[yeti]

Vantagefan said:

In an attempt to revoke the rolly eyes I did try and dig out actual specs but could only find that weight is around 1330kg.

However, despite being underpowered and underperforming aginast the GT4 brother I could find the N24 spec. It weighedf the same as the GT4 car and as they raced against each other in the one make series without there being a gargantuan difference I'd happily assume the GT4 power was similar to this with the difference in the two cars being mostly acceleration and power mapping in throttle delivery:

Power output of 410bhp (305KW) at 7500rpm

So what it'll be is that all cars in the class have a maxiumum power of 410bhp (controlled with the use of air restrictors) and a minimum weight of 1330kg. That's how it works

The original 4.3 N24/GT4 cars were 420bhp because they were lovingly handbuilt at the factory by basically, the guys that became Bamford Rose So those race engines were 40bhp up on stock factory engines.

When the 4.7 came along, they simply used the factory floor production engine as a race engine at only 430bhp, up 10bhp from standard due to powerflow air filters.

The reason the BR handbuilt 4.7 engines (such as in Pommehogsters car) produce so much more power than factory is due to the return to their handbuilt attention to detail. The extra horsepower is pretty apparent from the starting line... the Bamford Rose engines cars versus the factory racing cars were affectionatley known as 'scalded cats' such was their nature to fly off the line

Edited by yeti on Monday 10th December 16:48

[yeti]

robgt said:

Can you imagine what a BR tweaked Vantage S would be like then ?
Honestly I am living the dream over here in sunny Hereford

And all that's sorted on yours is the breathing at the moment Rob... Imagine the results when they get at the engine internals as well

[yeti]

Rather looking forward to having what is basically a Le Mans GT1 winning engine in my car... only even bigger. And therefore better

[yeti]

So do the regualtions state that the car must have it's road-going engine i.e. a 4.7?

Or could the soon-to-be-developed 5.0 (or thereabouts) see it's way into a racing car in the future?

[yeti]

Does anyone know why Aston didn't jump straight to the 5.0 from the 4.3 launch car when producing the updated Vantage? Wondering if it's ever been mentioned on factory tours and so on.

What I found with my car... originally we were going to rebuild the 5935cc engine to BR spec and make around 100bhp/litre. Then BR said 'why not go to 6.5' and looking at the numbers, it costs no more. Pistons and so on are a unit price, slightly bigger ones cost no more and you get free power and torque

Does the 5.0 require a different crank maybe?

[yeti]

George29 said:

They probably chose the 4.3/4.7 to slow the Vantage down.

Actually you're probably right - even Aston and the global regulations they have to comply with would struggle to keep a 5.0 engine below 450bhp... Dangerously close to DB9 territory...

Jaguar supercharge their 5.0, doesn't mean Aston have to though

[yeti]

George29 said:

I'm sure it's a lot less work to bore out the 4.2 to 4.7 than to de-supercharge an engine though?

Eh?

It's the same block - my question was why not take the 4.3 straight to 5.0 and am now wondering if that's what will be in the Vantage replacement? If indeed they do replace it...

[yeti]

mikey k said:

Exactly my point marketing positioning it.
The BR 5.0 NA does not need a new crank.

So the Aston one won't either... So next Vantage probably 5.0 with 440bhp or so (DB9 at 510 so a decent gap). And a BR 5.0 making what... 500ish, a smidge more?

Love it