new 800+ horsepower Ilmor engine?
 

Recently saw a post stating that Ilmor will be coming out with an 800+ engine by the Miami show 2012.

Anyone have any additional details about the engine and the rumor in general?

I personally volunteer for testing... will even be so kind and drive to get them at no charge :D

Mee too. I'll test european conditions for free. Just put them in a good test bed, like an Outerlimits 43SV or Skater 388. I'll spend looong weekends and holidays just testing testing testing. Free labour, what's not to like???

or NorTechs new 477 V bottom..

Dont think they'll be out that early. If they do come out they'll most likely be in an Outerlimits.:D

An SV29 with an 800+ hp V10 surely would be sweet and different:cool-smiley-027:

Getting to 800 hp from 725 is a little over 10%. Given that the engine is 513 cubic inches, would it still be a normally-aspirated engine? Adding a blower for such a small gain doesn't seem worthwhile, but getting 1.56 hp/cu in is pretty strong. Maybe it's being done through more rpm?

Alexi at boostpower can accomplish this N/A at the same RPM level but at a high cost.

IF these mods are "institutionalized" at the factory the cost would likely be much lower.

When all is said and done it seems that this is not the right platform to start with 800HP N/A as a final goal.

As a full rebuild when tired maybe, but a large cubic inch BBC would cost way less to achieve a good natured 800 na horsepower.

Uncle Dave

Had the same thought. Maybe something with variable valve timing like the 650, or a forced induction 650 style deal.

We'll see I guess. Those Ilmor guys seem pretty clever.

I think the 725 is it for N/A. The drive will handle 1000hp so I'm reasoning no significant engine upgrades, VVT or 4 valve as examples. That leaves forced induction for cost and minimal engineering qualification. I would speculate 850-900 HP supercharged. Minimal cost to Ilmore.

Now if Fiat wanted to spend boat loads (no pun intended) on new multi valve heads...for the Viper V10, well thats a differenct story. Especially if they contract Ilmore for all engineering design.

I spoke with Ian at Ilmor today on other matters, and this came up. "No plans for more power in the near future." Oh, well...

If you were to take a guess, what would he do, supercharger or turbos?

It's my understanding that the V10 is hard to get reliable results from at sustained high hp levels (900+). (I emphasis sustained, as there seem to be lots of builders who get big numbers in drag and road racing configurations, but that is entirely different.)
That being said, it would make sense to go with a screw-type/Whipple supercharger instead of going through the expense to engineer a marine-rated turbo system. It's such a limited market when you get into the really high hp levels, it's hard to get development costs back with small production runs. Given emission regulations, I don't know if a turbo package would be better or not...

Chief, Sterling and Merc have developed twin turbo systems. I don't see why Ilmor can't do it.

I still say they are working on a bb v8 engine.. these guys are pretty smart, and know it would be a smart move to compete with mercury.

Ilmor is defined by the V10. If they can get 725hp out of a 505ci n/a engine they should be able to get over 900hp out of a 700+ci V10 motor.

But you could be right CR, time will tell. Whatever direction Ilmor decides to go in though, V8 or V10, they will succeed.

Knowing the ridiculous 2000+ HP numbers you see out of Vipers for racing applications, I find it surprising 900 is difficult for a marine application.

Could they be waiting on the new viper v10 engine to debut in the 2013 viper?

I know a v8 700+ ci motor is expensive by itself. Wonder what the price tag would be on a 700+ ci v10?!:eek: Just about everything will need to be custom, and nothing off the shelf, other than maybe pistons, rods and bearings ect. Like a 4.5x4.5 or 4.6x4.5 bore/stroke deal. 747 ci has a nice ring to it:D

The v10's that pushes 2000 hp is running race fuel, and are mostly used for the strip. Not exactly a daily driver. Heck, several good builders are pushing 2500-2600 hp on 454 small blocks, just look at what Tom Nelson is doing. Car and boat engines are completely different. 725 hp from a n/a 511 cid OHV motor, on 91 is no small feat.

Now, a DOHC v10 would be interesting.

My point is that a bone stock V10 is pushing 600...getting to 700 with some modifications is a pretty simple situation on pump gas. These engines DO respond amazingly to mods and a skilled builder can make that happen.

Yes, but if you take that 600 hp stock engine and put it into a boat, it will not last long. Make that 600 hp engine live in a boat, and then make it live and run pushing 725 hp. Nothing easy or simple about that.

Give me a break. My Viper is making well over 550 at the crank and all I have is headers. Squeezing out 50 more HP through minor modifications is not going to severely weaken an already stout engine.

Taking a new Viper engine, making it breathe and making some small changes does not make a grenade waiting to happen at 700.

Might not be easy or simple but Ilmor seems to make the engines live no matter the loads placed on them at all the HP levels. I would not hesitate to put an Ilmor in a new boat or buy a pre-owned boat with an Ilmor.

That's exactly what's impressive about Ilmor's 650 and 725 engines.