Summernats 19 Thread

[hamish]

Yeah, but it's based on a sb chev, it just has a few extra cylinders.... it's a small block V12

[Dave]

and they don't have a V12 class...



psst a thumper series turbo will set you back $US4k before you even think about doing any sort of wheel/housing combo, and the biggest one they make is only rated to 2,200hp which probably wouldn't be happy making the 1500-1600 rwhp on pump fuel that you would want to make before you took your car to summernats..

I normally would have said a procharger (like an f3r), but I figured one of the big ass turbos would have to make more HP, so add another 10g and make it a twin turbo of some sort. B.t.w. If you made 2200 at the engine it would be about 1900hp at the rears :worship:

[itsnotagsr]

For the uninitiated amongst us (ie me) what makes a good HP heros type engine? I mean what is it about the old school engines that enables them to make that much power above standard?

[RotaUte]

For the uninitiated amongst us (ie me) what makes a good HP heros type engine? I mean what is it about the old school engines that enables them to make that much power above standard?

Cubes + Boost

[XEFalconUte]

I would say large displacement, which is why American and Australian V8 motors are so popular, and why smaller cube Japanese motors don’t get a look in. Most of these motors were initially designed either in the fifties or using tech from the fifties.

Unfortunately allot of the internal components used in these engines are of fifties vintage in design philosophy as well. Most use cast crank, rod and cast piston assemblies, but one place the engineers usually didn't skimp on when the blocks were initially designed was the use of cheap cast iron in the block, (There are of course exemptions to this, such as the thin wall Cleveland block). This leave you with allot of standard production blocks that are stable at high rpm/high boost situations.

It's easy enough with a large pocket book to purchase valve train assemblies for most of these pushrod engines that are stable to 10k rpm. Especially with the American engines rotating assemblies that are stable to a similar rpm figure are only a phone call away, and at a much more reasonably price than comparable assemblies for the Japanese engines.

In short, as much as most people hate to admit it, all things being equal there aint no replacement for displacement.

Have Fun

Simon

edit: this is the long version lol

[Southo]

TRYHRD in flames Video...

be quick, won't be up for long once you leechers start hammering it lol

http://www.specracing.com.au/stoney/P1010888.MOV

[GSRman]

If you made 2200 at the engine it would be about 1900hp at the rears

true, but its incredibly unlikely that you could get a combo in a small block to make 2200 on pump fuel using that turbo.. eg, its rated to flow enough LB of air at a particular pressure ratio, its unlikely you could get it to that point on a small block.

jason - just in case i've mirrored it here...

http://www.sl666.net/misc/TRYHRDHP.MOV