Project Car / Motorbike thread. Let's see 'em.

fairy1

fairy1

Banned
You might just want to inject water with no meth, Methanol is used in petrol engines as it has a greater cooling effect than petrol and increases octane at the same time. If you inject water only it will provide more cooling for your exhaust valves and it ups the effective compression slightly as the water does not combust.
24 PSI will be plenty, if you can get a brass/stainless misting nozzle for a greenhouse you can get decent mist from 10PSI. If you spray pre turbo it will be smashed by the impeller and atomized further, as long as you don't spray a direct jet at the impeller it won't suffer from erosion.

You could also run a simple injector setup using an injector a TPS and a fuel pump. You can get an injector driver from Jaycar for sweet FA and use a TPS as an input to fire the injector, it won't be as good as a variable setup but it will work.

Also if you use a petrol fuel pump or injector you will have to put a small amount of machinists oil in the water.
 
B

brisneyland

Likes Dirt
Thanks for the info mate, appreciate it.

Re: sub ambient temps, I'm not sure. It's feasible on a well tuned system. I'm not necessarily looking for the cheapest setup I can find, happy to spend some money on a decent setup. The IC spray was cheap and dodgy because I know it's not worth spending money on at this point :D

I don't think the quantity of water/meth required to bring temps down is all that huge - water can absorb a TON of energy in just raising it's temp from say 50ºC (if the reservoir is under the bonnet) to about 100º, and the TONS more in changing state to a gas - I learned all the equations to calculate this sort of stuff in first year uni but forget them (as I thought they'd be useless in later life - d'oh!).

Once the system is up and running I'll obviously have a better idea about consumption. I can ditch the spare and possibly fit a flexible tank in there that should get me 30 or so litres.




No mods on the engine as yet - it's a 2.0 TDI from an '08 Golf GT. 125kw/350nm stock. I don't think an aftermarket boost controller would integrate with the factory computer very well. My plans involve an aftermarket flash and DPF delete mid next year - should be good for about 40kw extra I think. If I can get a water/meth kit running well before I get it flashed, I should be able to get a bit more power out of it. I think one of the limiting factors with the tune will be EGTs, which the water/meth will drop a bit and hence enable more powah.

The DPF delete should get me better economy too, and the water/meth will reduce the particulate load as well, helping me mitigate the effects of ditching the DPF. ;)
 
GOD12A

GOD12A

Likes Dirt
Heya BRIS!!

Sweeto man, looks like ya done ya homework :)
I have seen water/meth do really well on big hp/boosted rotaries, but it wouldnt be my first choice.
You did mention lower EGTs with water/meth which is true. It also keeps the combustion and turbo exhaust side rather free from carbon buildup which is a plus.

Mark :)
 
Futile

Futile

Likes Bikes and Dirt
Alright guys, I am thinking about a project car to work and build on for a while, until the whole actual license thing comes into play.

My next door neighbor has the works for car building, (don't remember what it's called, but it's basically just a full car lift, basically the massive one's you see at car workshops)

Anyway, I get to use this when I want anyway.

Currently, I am sitting on 8 acres, and my next door neighbour is on 12 and at the back of our property's there is a massive long dirt road (which is completely flat) that is used for speed testing.

Maximum speed we have reached on it was 210km/h in a Datsun 1200 coupe with 300 horsepower. (the thing goes like all hell)

But, onto the actual question, what would be a decent car to tinkle with and muck around with for a year or so, I was thinking maybe an old '88 Skyline?
Or something similar?

Tell me what you think

-Jordan.
 
mr flat

mr flat

Likes Dirt
floody said:
Cool project. 351 Windsor seems an interesting choice for something that will see sustained high rpm though?
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in our experience the windsor is acytally a much nicer revving engine, plus being budget motors we only rev them to what our fixed ratio diffs allow which on a long track is only about 7000 rpm so its not really that relevent, the main goal with our engines is smooth torque from 2800 - 5000 rpm.
cheers
 
Futile

Futile

Likes Bikes and Dirt
mr flat said:
jordan, budget? previous experience? what will you use the car for? taste?
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Budget will probably end up being around the 1k - 1.5k mark.
Car will be used as a toy that can be used for testing, tuning etc.
For the purpose of experience gain, I DO like utes, but there out of the picture to the incredibly light back end's and the amount of tree's I live around ;)

Ahh, i'd probably be leaning towards a coupe, hatchback, small sedan.
Much like a datto 1200.
 
mr flat

mr flat

Likes Dirt
Futile said:
Budget will probably end up being around the 1k - 1.5k mark.
Car will be used as a toy that can be used for testing, tuning etc.
For the purpose of experience gain, I DO like utes, but there out of the picture to the incredibly light back end's and the amount of tree's I live around ;)

Ahh, i'd probably be leaning towards a coupe, hatchback, small sedan.
Much like a datto 1200.
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go small sedan as coupe , hatchback means higher price usually , thought toyota corrolla ? like 72? or maybe datsun 1600 but the price is creeping up again, gemini , escort 4 doors are going cheap atm and aftermarket support for them is amazing.
cheers jack
 
Igofastdh

Igofastdh

Likes Bikes and Dirt
mr flat said:
[PIC]
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Thas mad as Jack! Pics required as it comes. (Y)

PLUCAS said:
I call it the TTRX
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Is coming along nicely! The rear end still looks a lil too fat in comparison
(You probably will fix that thou :p)

PLUCAS said:
I couldn't afford one of them either

So far

Super Duke wheels (rear still in my office)
Pirelli Diablo Rain tyres
Husaberg 550SM 48mm WP Forks
DR650 Rear shock
Home made Brembo front brake concoction
Veypor Datalogging dash
Scorpio alarm

it is now 5 inches higher than stock and wheelies like a friggin demon
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Pics required! Sounds so sick now!
 
floody

floody

Wheel size expert
mr flat said:
in our experience the windsor is acytally a much nicer revving engine, plus being budget motors we only rev them to what our fixed ratio diffs allow which on a long track is only about 7000 rpm so its not really that relevent, the main goal with our engines is smooth torque from 2800 - 5000 rpm.
cheers
Click to expand...
Ahh ok, yeah shouldn't have the high rpm, high load block splitting issues in that case. And I guess what you lose over a Cleveland in breathing you more than gain back in a reliable oiling system.
 
mr flat

mr flat

Likes Dirt
floody said:
Ahh ok, yeah shouldn't have the high rpm, high load block splitting issues in that case. And I guess what you lose over a Cleveland in breathing you more than gain back in a reliable oiling system.
Click to expand...
the ruling in our class dictates iron heads which mainly means modified stock heads, the cleveland heads make big flow bench numbers but only later in the rev range purely because of the cavernous inlet tract inside the cleveland heads but at anything under 5000 rpm they have quite a low air speed as opposed to the windsor heads with smaller better shaped inlet tract meaning much higher air speed at similar revs meaning much greater torque production and better rev range response, plus in a 500 hp class the windsor heads with a good polish breath 470 hp on the flow bench which is more than adequete especially with the torque and revs we are aiming for.
cheers jack
 
mr flat

mr flat

Likes Dirt
allot of potential but i'd ditch the 1.3 pretty quick, saw a few 4age black tops going for 400 to 600 with full ecu and loom, so thats just one option,

and as far as pricing on ae86s atm check a few forums out i reckon you'll be in for a nasty surprise due to there cult following.
cheers jack
 
floody

floody

Wheel size expert
KE55s are a dead end I'm afraid.
Recirculating ball steering, leaf springs, flexy body, naturally very front heavy, I wouldn't.
 
Futile

Futile

Likes Bikes and Dirt
floody said:
KE55s are a dead end I'm afraid.
Recirculating ball steering, leaf springs, flexy body, naturally very front heavy, I wouldn't.
Click to expand...
How are they front heavy, with only a 1.3 engine?
Wouldn't it be really light and easily driftable?
 
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