Bcl's Monster Unleashed @ Forum Dyno Day

[xlnt6]

Falcoon,

No it's not the same motor, it is a similar spec though (internally). BTW that 1100 hp ended up making over 1200 hp !! Brian's uses a smaller version of the same turbo, making it more suitable for "street" applications, and of course has an exhaust system as well. All that means it doesn't quite produce those figures quoted above, but I'm sure you'll agree it's enough to get you down the local milkbar when required.

The 1200hp engine was to be used in a drag application, but I believe Simon's put it up for sale, if anyone's interested !!! PS. If you need to ask how much, then you can't afford it .......

Cheers

Robin.

[bcl]

Isn't this the 1100hp motor Nizpro originally posted video on their website?

522kw = 700hp - is 400hp driveline loss an acceptable figure?

<{POST_SNAPBACK}>

Robin is fairly close in his reply.

Simon’s motor made around 1260hp at the crank.

My motor is making close to 1000hp at the crank, around 800rwhp (with around 20% drivetrain loss), but that dyno last weekend was reading low, as noted for the high powered cars, and my runs were in 5th, not 4th, and so will generate less torque through the dyno and give a lower kw reading.

My target output was not the 1250hp made by Simons R&D motor, and 1000hp was deemed to be more than adequate as a maximum target, with capability to reduce power by boost control as required.

With larger turbo and higher duration cams than the standard T, the variable cam timing option of Motec was mandatory to keep good low down torque, and flexibility around town. Simon believes he has achieved that, plus off boost he said it feels more like a 4.4 litre rather than a 4 litre. With larger turbo exhaust housing for freer gas flow, plus cam timing changes, that is exactly what I expected.

The cams are not as wild as in Simons motor, but even so you’ll notice from the dyno graph that the power is still rising (notwithstanding the dip) at around 7000revs, 234kph in 5th.

Internally, every other component of the motor is the same as Simon’s motor, including a very expensive billet crank. The extractors are the same as Simons, and similarly utilizing a split-pulse entry into the turbo exhaust housing, for vastly superior turbo spooling.

The injectors used are the same as Simon’s.

The turbo is slightly smaller than used in Simons motor, as the compressor wheel is slightly smaller, and the exhaust housing is a lower A/R ratio.

So it makes very close to the 1000hp target.

To go to 1250hp would be a simple matter of inserting the wilder cams and larger turbo, but there’s no point for me, it would lose some drivability and obviously dealing with 1000hp is more than enough to deal with.

The fluid reservoir next to the exhaust will probably be replaced by an aluminum item, as the heat is already causing some warping, and no doubt the stock plastic item will crack.

Brian

[ktford]

what is happening with the bonnet venting then big Bri?

Scotty

[Flukey]

More like a Great Big Hairy Rip Roaring Sabre Toothed Tiger in Cuddly Koala Guise.

Actually, big tyres and twin exhausts hint to something more than stock

[bcl]

what is happening with the bonnet venting then big Bri?

Scotty

<{POST_SNAPBACK}>

I spoke to a company before xmas about a carbon fibre bonnet, with vents, but haven't followed it up. They were very keen. It's just something else on the to-do list.

Brian

[Flukey]

So Brian, when do you expect to have it finished or is it a never ending project?

[bcl]

I do want it back within the next couple of months, but it will be an ongoing project.

However, due to new business commitments I don't have much spare time.

Brian

[mbjunior99]

Can't wait to see it finished!! Awesome car ... wish it was mine

[WBT56]

Brian, I would move the reservoir, not replace with alloy. The heat soak from the alloy will boil the fluid and kill the plastic master cylinder above your feet. Ben.

[cobrav8]

You would be best off fabricated a heat shield out of aluminum, backed with something like a piece of hardiplank and then an air gap between the shield and the resevoir. (or in fact have the shield protecting the whole area).

I have something like this around my headers on my Cobra to stop my footwells from boiling!

You will probably find that driving the car will cool things down much better than on a dyno anyway.