[peazz]

So, what would it take to get my hands on an aluminium crank case from the new 2.5l lump and get it put onto my 8V, is it at all possible or would have Audi done it in such a way to make it near impossible?

- P

[T-800]

So, what would it take to get my hands on an aluminium crank case from the new 2.5l lump and get it put onto my 8V, is it at all possible or would have Audi done it in such a way to make it near impossible?

- P

Are you on drugs?

[Cobstar]

Anything is possible with time and money. But wouldn't it be cheaper and "safer" to tune the current block which is a known quantity?

My prudent head says the aluminium block needs proving as reliable first.

[peazz]

 already tuned my car as much as I willing too right now, running nearly 460hp / 650nm, the problem I find with these cars is they are so nose heavy, I am just trying to brainstorm ideas to lighten up the nose a bit

EDIT: We already have ally bonnet, carbon wouldn't shed that much (at least to justify the cost)

Edited by peazz, 12 February 2017 - 01:43 PM.

[Roy]

[T-800]

Perhaps your a prime candidate for ordering the FL RS3...........

 

Most can't see the point if they've got an 8V already....

 

Seems like you'd benefit from spending the extra 25K to swap.......

[Hal]

carbon wouldn't shed that much (at least to justify the cost)

And you think the cost of an alloy ccase (which I doubt would be a straight swap anyway) would be cost effective...??

Edited by Hal, 12 February 2017 - 02:18 PM.

[T-800]

The Ali one won't be exactly the same
All the internals will be different
The dimensions on the out side will be different
The Gearbox mating points might not be the same
It might not accept the current cylinder head
The cooling system will be different

The oil ways could be different.

Then there's this issue of actually buying one full stop...

You don't actually know if the new one is magically transformed because it's carrying 26kg less anyway

Edited by T-800, 12 February 2017 - 02:45 PM.

[terminator x]

Do you think 25kg less will make a big difference?! Go on a diet and lose it that way.

TX.

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[deepspacemillar]

Wait for the reviews, peazz, at the very least. If I read correctly, the 25kg weight saving isn't all in the engine block anyway. It also depends on how and where the engine is mounted, wheel geometry, tyres, etc as to whether you'll even be able to perceive the difference

[invisiblekid]

Won't it be a different turbo too? I can't imagine they'll push the current turbo to almost 400bhp.

 

If you want to shed weight from the front, then the brakes & wheels would be an easy options and save more unsprung weight.

Edited by invisiblekid, 12 February 2017 - 07:42 PM.

[Benno]

17kg saving in unsprung mass from mostly over the front of the axel will make a HUGE difference. How anyone can say otherwise is astounding.

 

Maybe go strap 17kg of lead in your engine bay and go see what happens, if you feel otherwise. 

 

Whether or not it's the same set up is another issue and all I see are assumptions in the replies. Lets try just dealing in fact and if you don't know why bother posting?

 

peazz, it's not a silly question at all, was thinking the same thing myself. 

[Benno]

What happened to the magnesium sump weight saving, now alloy crankcase?

[mfurse]

Anything is doable with enough time money and effort...however I think the new engine is a very different design over the existing iron engine. Extract from the TTRS press launch:


"At the heart of the TT RS model is a brand new transversely mounted turbocharged 2.5-litre five-cylinder direct injection petrol engine, development of which kicked off under the guise of Audi's former R&D boss, Ulrich Hackenberg, prior to his retirement late last year.

Bringing it into line with the German car maker's four-cylinder engines, the new powerplant adopts an aluminium block in a move that, in combination with other changes centred around the induction system, sees it shed a claimed 26kg over the older iron block unit it replaces.

At 2480cm3, the overall swept volume remains the same as before, although the adoption of Audi's pateted valve lift system and a dual injection system that injects fuel into the inlet manifold as well as into the combustion chamber is claimed to bring significant improvements in overall efficiency.

In its initial state of tune, with its turbocharger running maximum boost pressure of 1.4 bar, the new five cylinder produces 294kW, providing it with a specific output of 119kW per litre. By comparison, the earlier iron block engine used by the final incarnation of the first generation TT RS delivered 29kW less at 265kW, endowing it with 107kW per litre. "


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[deepspacemillar]

17kg saving in unsprung mass from mostly over the front of the axel will make a HUGE difference. How anyone can say otherwise is astounding.

 

Maybe go strap 17kg of lead in your engine bay and go see what happens, if you feel otherwise. 

 

Whether or not it's the same set up is another issue and all I see are assumptions in the replies. Lets try just dealing in fact and if you don't know why bother posting?

 

peazz, it's not a silly question at all, was thinking the same thing myself. 

 

It is of course non-trivial sprung weight off the front axle and always a better choice if you can get it. But, it depends where that weight is and how it is distributed as to how much of a difference it really makes.

Whether it is the same setup is part of the issue to debate - this will determine the difficulty and therefore the costs.

 

"Lets try just dealing in fact" - this whole thread is informed conjecture, including the original question AND the best answer I could muster below.

Anyway, I digress;

 

In answer to the original question - I think it's going to be difficult to get hold of an actual engine unless you manage to find one in an insurance write-off. Audi don't just sell their engines out to people as far as I'm aware, only replacement. It's worth asking at a dealer to see, but I think the chances are slim to nil.
However, assuming you can get hold of one, the cost of the block alone is likely to me in the range of £6000+ at a guess.
You then have to get it fitted, which is usually a fair amount of work - this obviously depends on rates, but £500+ would be a rough guesstimate.
This is assuming the engine is a straight swap of course, we know the engine has - a new turbo, new injection systems (which necessitates new pipework in the engine bay and probably changes to fuelling systems as a result), new sump, redesigned induction. Do you get the turbo with the engine? If not, that's another couple grand...
It could well have also different cooling systems, mounting points, ECU, exhaust manifold/downpipe etc.
The more of these things that differ, the more likely this project is nonsensical.

 

Of course, swapping the non-factory engine in also incurs other penalties too;

- You will need specialist or at least more expensive insurance

- Any and all warranty on the car is probably nuked

- You may need to get it MOT'd for it to be roadworthy? (Not sure on this process myself)

 

I can't answer these things in detail, and I'm not sure many people can. You'll probably have to get a mechanic to look at both RS3's and give you his own guess.

 

I would from an engineering porn perspective love to see this come to fruition, but frankly, for the costs involved this seems completely overkill.

Edited by deepspacemillar, 13 February 2017 - 10:37 AM.

[T-800]

^^^^^^^^^^^^^ +1

 

Now here speaks a man of some sense and understanding.

 

You my friend will go a long way on here..........

[terminator x]

17kg saving in unsprung mass from mostly over the front of the axel will make a HUGE difference. How anyone can say otherwise is astounding.

Maybe go strap 17kg of lead in your engine bay and go see what happens, if you feel otherwise.

Whether or not it's the same set up is another issue and all I see are assumptions in the replies. Lets try just dealing in fact and if you don't know why bother posting?

peazz, it's not a silly question at all, was thinking the same thing myself.

There are no facts though as the car doesn't exist. Will you stop posting about it?

TX.

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[Benno]

Sure, if it makes you all feel better. I sincerly hope it does. The engine doesn't exist hey… 

 

There are no facts though as the car doesn't exist. Will you stop posting about it?

TX.

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[terminator x]

So what did you think of it when you analysed it in your workshop?

TX.

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[terminator x]

Stick just to the facts though eh.

TX.

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