Jap engines......

[topcatcustom]

Christ listen to all you oldies go!!!! I knew I should have waited a few more years to get into V8's

1300bhp supra: http://www.youtube.com/watch?v=HSsjwAU1gI8&feature=player_embedded

1400bhp skyline on dyno: http://www.youtube.com/watch?v=c0-UqLfzkAE&feature=related

There are LOADS of supras and skylines packing over 1000bhp, might not go as long inbetween services as a BBV8 (like 1000miles lol) but still, shows how good these engines are!

[Darkspeed]

Porsche 917 engine I think (big fan in the middle to cool the cylinders?), saw a crank for one on racecarsdirect a while ago, wanted 64k for just the crank! don't know if he got it, but a 917 with a history is £400k+ to someone!
Mike

Quite correct - its a 917 Turbo engine
That particular engine is going in a Can-Am 917 being restored - absolute work of art

Crank £64K eh - wonder what the couple of head studs I have on my desk now are worth

917 with Le-Mans History makes a few more pennies than 400K

Andrew

[Lehto]

Yees.... japanese and their peak powers, with 2second turbo lags. When do these engines start making power? 5000rpm? How narrow is the powerband? 2000rpm?... Not really all that good horses now...

Plus the RB26 block is cast iron so it weights a lot. Its heavier than your cast iron 350 chevys. RB26DETT engines is about 250kilos...

[ChrisJC]

The other point about those silly BHP figures is for how long....

1400BHP = approx 1MegaWatt.
Given a petrol engine is about 33% efficient, that means that 2MegaWatts of heat are being generated. There is absolutely no way that the cooling system is going to get rid of it, so the entire engine is going to heat up _very_ rapidly.

I challenge those boys to run at 1400BHP for 60 seconds.........

Chris.

[stevieturbo]

The other point about those silly BHP figures is for how long....

1400BHP = approx 1MegaWatt.
Given a petrol engine is about 33% efficient, that means that 2MegaWatts of heat are being generated. There is absolutely no way that the cooling system is going to get rid of it, so the entire engine is going to heat up _very_ rapidly.

I challenge those boys to run at 1400BHP for 60 seconds.........

Chris.

How many forms of motorsport can you name where any vehicle will be used at maximum power for 60 seconds ?

Even tractor pulls dont last that long.

The only one would be Nascar, and thats a different kettle of fish.

That said, if you look at some of the local time attack cars, which will see a lot of WOT usage.

Some of them are lowly 2.0 4cyl cars, making 700+ and easily last race after race. ( of course...some dont last lol )

[kiwi303]

The other point about those silly BHP figures is for how long....

1400BHP = approx 1MegaWatt.
Given a petrol engine is about 33% efficient, that means that 2MegaWatts of heat are being generated. There is absolutely no way that the cooling system is going to get rid of it, so the entire engine is going to heat up _very_ rapidly.

I challenge those boys to run at 1400BHP for 60 seconds.........

Chris.

A lot are fully ceramic coated in and out, so a shitload of heat is passing out the tailpipe instead of soaking into the engine bay.

Pleny of skylines and such making crazy figures down here, even a RB30DET in a 70's Fairlady Z doing 7 secs down the 1/4 mile in STREET LEGAL trim.

As to the block weight, only the RB30 is cast nodular iron all the others RB 20, 25, 26 are all cast ductile iron, lighter and thinner, the RD28 diesel is an RB30 block with a thicker bore and shorter stroke crank.

If you want english language info on jap engines, join some of the antipodian forums, Skylinesdownunder, Supras Australia, Datsun NZ.

[Richard P6]

I was talking to a chap in S'oton who had managed to get his Evo to 800bhp with a 0-60 of 2.8 seconds or so he reckoned.

I thought it was great and my son, who was with me, drooled all over it.

Until, he said that he only drove it to work once a week because it used £10.00 of petrol to get there, if he took it steady.

Bad news is he 1. Only lived 7 miles away, 2. it used another £10.00 worth to get home 3. he had to drive it like his granny to get it that frugal, and 4. this was about 5 years ago when petrol was only 79p litre!

I worked out (I was in the LPG installers at the time) that my car, a 2.4L A6 Audi would do the 7 miles for 58p

[stevieturbo]

If his Evo uses that much fuel during normal driving, then its a complete POS or been tuned totally wrong.


Such fuel consumption claims are just BS, or if true, see above.


Its perfectly feasable for a 2.0 turbocharged engine to make 800bhp and return sensible mpg too.