OMG its HUGE...

[growler_south]

IT arrived today. I knew the the RHB5-VF8 was a big turbo, but HOLY FUCKING SHIT BATMAN this is insane! YEs, that is a full-size CD, not a CD-single. If my transmission ever breaks I could just point the outlet backwards and use it as a jet engine. I'm hoping to keep my existing exhaust turbine housing, as then I wont have to make up a new O2 housing and manifold flange adapter, but that will depend on my existing housing mating nicely with the turbine wheel on this turbo.

Excited about new toys. Afraid I'm turning into a boy racer. Complete with bad taste in cars.

Comments

[daltxfurry.livejournal.com]

*blink*
*blink*

Uh.....for those of us not motorally or mechanically inclined, could you dumb that down a bit? :-)

[growler-south.livejournal.com]

Big new turbo for engine make Growler go *squee!* despite potential difficulty in making it fit. However, once fitted, Growler's car will go *SQUEEEEEEeeeeeeeeeeeeeeeeee...* into the distance. Possibly with some sort of 'WarpDrive' effect.

;-)

[daltxfurry.livejournal.com]

Ahhhh....okay.......my inner hetero male is all giggly and dancy now. :-)

[growler-south.livejournal.com]

My inner hetero male is confused about why your picture makes me go WOOF!! and is starting to realise he's trapped in the body of a big homo... *grin*

[daltxfurry.livejournal.com]

My outer homo is licking the computer screen because of your picture

[growler-south.livejournal.com]

Oh come on, its a nice turbo but its not THAT nice.

This bike, however, should keep you amused:

[daltxfurry.livejournal.com]

Uh....i was licking YOUR pic...not the turbo's pic.... :-)

[gregorbehr.livejournal.com]

I think you need to take your inner hetero shopping for something domestic, like new sheets or something gay!

Really now, you worry me. Next thing you'll be building stuff out of wood and watching football.

[wenchwoman.livejournal.com]

cor, you got a big 'un.

;)

[beastbriskett.livejournal.com]

OMG-- that's quite a big--housing ya got there...

[growler-south.livejournal.com]

Im not sure whether to be excited or concerned by the size of my gaping ports though...

[furr-a-bruin.livejournal.com]

Never been much into turbos - have you heard about Honda's new direct injection engines? They're typically Honda - more fuel efficient, lower emissions and more power. ;)

It's fascinating because depending on whether the engine is in lean-burn, stoichiometric or high-output mode, the timing of the fuel injection varies. In lean-burn, it's near the end of the compression phase. Up until this engine, the best lean-burns could only go to about 40:1 air/fuel ratio, but this one goes 65:1. ;) In the other two modes, it's during the intake phase, though as I recall even there the timing is somewhat different.

[growler-south.livejournal.com]

Its a clever way of running a car- for power you burn the fuel, for economy you explode the fuel. Basically your engine turns into a diesel for economy.

I dont trust it though ;-)

[furr-a-bruin.livejournal.com]

Feh.

Honda knows more about gasoline internal combustion than any other company in the world. Who else makes everything from garden trimmers to 4 litre V-6es, and everything in between? :)

[boofbiker.livejournal.com]

I hope we get to have some fun in your garage. Oh and I am talking about the car this time. I am happy you got your new toy!!!!

[smellykaka.livejournal.com]

Won't it be a bit laggy?

[growler-south.livejournal.com]

No, I'm intending to use my existing exhaust side, the A/R of which is ideal for my engine. The only problem with the Piazzas stock turbo is the miniscule compressor- it tops out at 7psi, although the engine, injection and ignition systems can handle a lot more.

Even if I cant use my existing exhaust, this turbo is off a 2.0 Subaru , which has very similar engine characteristics to the Piazza 2.0.

I just hope it doesnt hit the wheelarch!

[smellykaka.livejournal.com]

Ah, that answers the other question I forgot to ask namely "is your fuelling up to it?"

How much boost do you expect to run on it?

(A/R?)

[growler-south.livejournal.com]

At 5500rpm at full 7psi boost, a stock Piazza injector is on 65% duty cycle. (its proper 4-channel sequential injection too, none of this 2-channel parallel injectors bollocks)

The stock Piazza Turbo engine, with its forged crank and rods, is good for 12psi. Add forged pistons and you can run 15psi as long as you use good petrol, although the electronic wastegate controller will reduce the boost if knocking is detected. 12psi yields a good 260hp, which is PLENTY for a short wheelbase RWD with all the weight in the front...

A/R= ratio of exhaust inlet area to radius from centre of turbine. Defines how much torque the turbine will see from any particular gas speed. With a bigger compressor side, the lag will increase a bit, but Piazzas never had lag anyway.

[smellykaka.livejournal.com]

12psi yields a good 260hp, which is PLENTY for a short wheelbase RWD with all the weight in the front...

Got intercooling?

And you do recall me putting my hand up for a white knuckle ride? :)

[growler-south.livejournal.com]

Factory intercooler. This is ISUZU after all, they build trucks. Over-engineering is their specialty. The Piazza would have sold a little better if they'd spent some time on the handling and dynamics, but ah well...

White knuckle rides all round I think, however I need to find a good large workshop for a couple of months to complete the bodywork in... Know anyone?

[smellykaka.livejournal.com]

White knuckle rides all round I think

Good-oh!

however I need to find a good large workshop for a couple of months to complete the bodywork in... Know anyone?

Sorting out workshops is not really in my area of expertise.

Anything more complicated than replacing a bulb or fixing a loose central locking actuator involves me paying Toyota to do it, and they're pretty easy to find :)

[growler-south.livejournal.com]

it is done. Old exhaust housing bolts straight on to new turbo cartridge, so no need to modify exhaust system. Just need to change the inlet pipes and water cooling pipes and I'm off!!

[smellykaka.livejournal.com]

Won't you have to fiddle with the wastegate actuator? or at least, the plumbing to it?

[growler-south.livejournal.com]

Nope, using my old wastegate actuator and bracket! and the plumbing's just a piece of hose going from the compressor outlet to the actuator can. Because its got an electronic boost controller, I dont need a pressure bleed line to increase the boost, I just need to put a resistor across the pressure sensor so it thinks its getting less boost than it is. Hurrah!