Romans 2005 Toyota Echo

[Roman]

10 hours ago, Hyperblade said:

If your looking at light engines, you should run the numbers on a bike engines turboed... Pick the right cc you can even stay in under 2L class

The magical aspect of 1NZ setup apart from the weight. Is that parts are incredibly cheap, and theyre $500 engines. 

And new enough that youre not buying trashed old stuff.

But I must admit I sure do love the likes of the Dunne brothers MR-S with the turbo hyabusa setup.

That thing is wild! 

 

[~Slideways~]

Does the weight difference still add up when you've added all of the extra turbo stuff?

Really interesting idea though...

[Roman]

Well how much is turbo stuff? 

With a budget of 80kg for turbo stuff, that's a lot of turbo stuff to break even! 

In other news, today was an absolute bloody hoot! 

Handling was actually great, a little understeery but being so light in the front you dont get punished for it. Doesnt sledge much just tells you its not happening. 

A rear swaybar would be absolutely magic in this thing. A++ would overtake cautious beginners in the slow group again 
 

 

[ajg193]

You'd almost need new undies after the close call at 2:45

 

Also, is that safety car one of them newfangled GR Yarii?

[Roman]

Yeah yaris GR. There were a few there they look super sweet

 

Second vid feat: rocket ship jza80

[kyteler]

Enough blue smoke coming from those Toyotas you'd think it was Mitsi Fest. 

[AllTorque]

Nice dorts. 

 I hope you’ve found what was rattling around at every corner.

[~Slideways~]

15 hours ago, Roman said:

Well how much is turbo stuff? 

With a budget of 80kg for turbo stuff, that's a lot of turbo stuff to break even! 
 

haha yeah maybe not 80kg's. But at least some of the lightness will be in the plastic intake etc, probably only talking a few extra kg's if you make a simple aluminium one though.

I wonder how strong the engine is? I know Mighty Car Mods's's Yaris didn't last long, who knows what condition that was in beforehand though.

[Roman]

Its the pencil spec rods that are the problem and they shit the bed around 160hp.

Its not a coincidence that the trd turbo version and the aftermarket supercharger setups all have near exact same power cap.

Apart from that someone with a hearty turbo setup split the block in half at about 500hp haha.

[Spencer]

We have a exhaust on this yet? eat up those 4ages with all those exhaust side gainz.

[ajg193]

This guy got 448,000 miles out of his first clutch on his Yaris

 

400,000 out of the brakes

https://www.yarisworld.com/forums/showthread.php?t=45522

[87creepin]

Are the blocks strong despite being aluminium?

[Roman]

There are plenty of engines that make medium-big turbo hp (for displacement) despite alloy block

The only upper barrier i've heard of is someone splitting the block at ~500hp.

[Evan]

You’re just going to have to wrap you block in carbon and shoot for 600hp then.

[Roman]

19 hours ago, Spencer said:

We have a exhaust on this yet? eat up those 4ages with all those exhaust side gainz.

Nah still standard junk on it

[Roman]

There's been a 2012 Toyota Aqua 1NZFXE engine on Trademe for $520 a while...

50,000km old, but says it doesnt include any extras just sold as bare block essentially. 
It's been relisted lots of times over, so I figured it might have been picked dry of parts since the pictures were taken. 
The only thing I really need that might have been taken was the water pump. But even if it wasnt there, still a decent price for a low km engine I guess.
Since it was for sale from a wrecker near my work office in Auckland, I thought I'd pop my head in while I was up there yesterday and see what's left.

I asked the guy if I could take a look at the motor, so we go over, and way down the back it's been sitting on a pallet completely untouched.

Still has coilpacks, electric water pump, EGR junk, wiring loom, etc etc... and he said he'll include all that stuff if I buy it.
Sweet!

After some fairly one sided chats involving his enthusiasm to be rid of it, he haggled himself down to selling for $400 with no warranty. 
Done deal!

So for now it's just going to be put in storage at my Dads place in Auckland until my shed is built. 
But I've already got the 1NZFE cams and sump ready to swap across, so will see if I can do that up there in the meantime.

Gonna be good! 

Prius + echo combined, what an absolutely astounding motorsport pedigree 



 

[ajg193]

https://www.tvnz.co.nz/shows/seven-sharp/clips/meet-the-gearheads-who-gather-to-celebrate-their-love-of-the-trusty-toyota

 

I spy @Roman on tv

[Roman]

Ahh so the "does it take slow corners faster than other car" question.

Compared some GPS data. This is just peak to peak points rather than actual speed change as the data is on two separate devices that cant be overlaid.

On the slow parts its pretty bloody close, which I think is amazing given the only suspension mods are  Zebra sourced springs from a Toyota BB and second hand 185 wide tyres

This is compared to 205/50/15 AD08R on the Carina.

3 out of the 5 corner sections, the minimum speed is near identical, and on the other two it could possibly close up the gap with some less gumby lines... has been a while! 

Just gotta get those peaks higher with good gearbox and big block. Haha
 

[Roman]

So checking out new motor.

Has water cooled egr valve and water cooled crank case vent tube.

Guess they try do everything possible to stop knock or misfire with a big egr amount.

Interesting stuff, that, can fuck right off.

The electric waterpump arrangement looks easy to wire up, 4 pin plug with two big and two small wires. Will be 12v, earth, then i suspect pwm input and maybe a return signal or just voltage for pwm perhaps.

It looks like it would be easy to retrofit a mechanical pump setup or vice versa. Id like to keep the ewp for nerdy reasons but i suspect mechanical is lighter and more reliable. It will come down to how tricky it id to mount an alternator I guess. As the belt arrangement might be better with the mechanical pump in place. As it gives more belt wrap and acts like an idler between aircon pump and alternator.

The intake manifold is interesting with a tiny tiny e-throttle unit and a shit looking manifold. This too can GTFO obviously. The egr pipes are all in the intake manifold though which is good. Nothing intrusive in the head.

This later motor has a flat response knock sensor so it wont max itself out by 5000rpm like the other one does.

The main trickiness of this swap, apart from mounting an alternator.

Looks to be figuring out the water lines and probably just blocking a bunch of it off. Will draw some shitty diagrams to compare to regular motor next time im up.

[Roman]

Boring update, which greatly contrasts to this very exciting car

The model after my shape (NCP91) has a 1NZ motor that has roller rockers in the head. 
So this means they have way less lift on the cam because its multiplied by the rocker ratio. 
So it looks like they only have something like 4-5mm lift vs 9mm for the normal head cams. 
So what might be an interesting is put the low lift long duration prius cam from the non rocker engine (about 270deg duration, approx 4mm lift) into the rocker motor. 
Might be a super easy way to get some sweet duration and lift for cheap on the NCP91
Which should also have reflashable factory ECU. So might be quite easy to do some doorts in that shape car.

But while thinking about all this, people said that the rocker head only comes on the Japanese new engines. 
And I realized the prius motor swap I'd seen, was someone from America. 
So thought I'd better check and make sure I didnt have the rockers. I didnt, phew. 

But I was blown away at how clean this thing is under there! 
I guess its a 50,000km engine on a hybrid where the motor only runs part of the time... so the real run time kms will be a little lower. 
Hopefully it doesnt have ring sealing issues like some of them did. As they have very low tension rings for less friction. 

Might be solvable by fitting a vacuum pump on the crank case so there's a higher pressure differential on top and bottom of the piston. 

Yet again, prius is basically a pure bred race motor, already setup with piston rings for dry sump. haha

 

I have ordered a valve spring and titanium retainers kit for it. 
This cost more than the whole motor did, but will be worth it to see if I can stretch it to 8k rpm haha.


Also, this motor has the exhaust manifold at the back of the head, and then the exhaust runs backwards obviously. 
So I've been revisiting the idea of trying to use cad to design an equal-ish length manifold thats made from as few parts as possible.

If I could get away with having the pipes run perpendicular to the flange, backwards, I'd only need 2 90 deg bends per runner and they would be within about 50mm length from longest to shortest. 

Also noteworthy that this design has each runner sitting flat on its own 2d plane, so each runner could lay perfectly flat on a table. So you could print an A3 drawing of the outline and then cut the bits to shape and tack it together without any fiddly indexing of pipe angles etc.




Trying to get them a bit more equal (within about 20mm) need some longer bends for the center two, but still only two bends per pipe. Would just need to be cut from 180 deg bends not 90s. 



So might be a good first project for an exhaust manifold when I learn how to weld one day.
Or otherwise easy to just cut all the parts and have someone else weld it up.
Not sure how to make an economical/easy collector though but will scratch my head a bit more and try figure something out.