Punto (Mk2/2b) Mk2 Sporting Turbo

[shakey_hand_man]

love it..

 

[jip0]

what i would do to be able to do this to mine

looks awesome bet its amazing to drive

 

[karbineftw]

If you removed the abarth kit, and the awesome wheels you could make this into a right sleeper. Would be sick Chavs wouldn't know what hit them

 

[Munkul]

cheers people

Shakey - cheers, remember, you were the one who helped me with a load of stuff when this project was still in the theoretical stage

Theres no way i would remove the abarth kit whats the point in making a car look worse?

Well today i fitted my BOV

Went for a quick drive, found out that connecting it to the same vacuum line as the boost gauge was not a good idea - threw the gauge reading way out! I knew better, but i was lazy.
So connected it up to the breather vacuum instead, and blanked off the crankcase-manifold pipe.

Went for another drive, found out that it didn't open, tweaked the adjustment screw a load but it did nothing.

It then developed a misfire. Bummer. Fixed the misfire by gluing some silicon pipe over a split in a HT lead boot.

Dismantled the BOV, found nothing wrong with it. Reassembled it with sealant on the diaphragm just in case it was that.

Wired in the Greddy FCD.
Started up, ran lean as feck. Tested the voltages it was putting out and it had gone totally haywire - putting out 12v on the 5v wire, WTF! Opened up the casing and played with the components on the circuit board. Put it back together and it tested fine. Plugged it back in and the engine ran just fine after that.

We tweaked the map again to compensate for the loss of fuelling (the stock ecu now thinks there is only 1bar of pressure instead of the 1.18bar that it thought there was before, so injects less fuel, something that i dont think many FCD users remember). Now the map sensor fault doesnt come on when cruising above 3000rpm, so it seems to be doing the job it is supposed to :top: as long as it doesnt go haywire again, then i think that this completes the turbo conversion fully

The BOV still doesnt open, though. Kinda stumped as to what it is - unless the breather vacuum doesnt flow enough pressure... will find out soon enough when i look at the spare manifold on monday.

 

[shakey_hand_man]

No probs..

BOV should use vacuum signal from after the throttle body, mine is on the manifold and uses same line as boost gauge but its a piston type..

-Andy

 

[Munkul]

i know... the breather pipe i mean is the one coming off the manifold, i thought it was rather pointless leaving it o the crankcase breather since it vents to atmosphere anyways i think the BOV is knackered now though.

 

[midget4hire]

Not related to the turbo upgrade, but which strut brace did you get for this? Not sure which will fit and as my engine bay is pretty much the same as yours

 

[Munkul]

Its an OMP alloy brace. I didnt buy it new, but strutbracer.com or ebay will offer plenty of choice for braces for the correct engine in a mk2.

Well things havent moved much with the car.

After a few days, the FCD fried itself along with the MAP sensor - guess it was halfway to being knckered after all. But i dont think a new one would sort it anyways. Im just running it without a FCD at the moment.

The BOV turned out to be knackered so a new genuine SSQV was bought - but the 1.2 doesnt SEEM to generate enough vacuum to operate it anyways. So far i havent been bothered to change the spring for a light one but it hopefully will sort it.

Ive decided the only way forward with the car is to install standalone management, and run a single set of larger injectors. This gives me way more potential for future upgrades - if i pull this off then i might go crazy with cams etc....

Firstly i needed a different inlet manifold - the Mk1 manifold will allow me to run a cable throttle instead of the fly-by-wire that the standard management uses. I also can use the larger 48mm 1.6 throttle body.

Hardware bought and stripped:

stripped down to the injectors which were being a pain, so i left them in for the time being

Compared to the mk2 TB - marea TB is 48mm, Mk2 TB is 43mm. Marea one also has the idle control valve and stepper motor built in, which is getting junked.

Full Megasquirt MS-II management system has been ordered, Im just waiting for it to arrive so i can get on with building the PCB up!

 

[blu73]

as always, i like your direction

 

[Munkul]

wheels are finally being done. I havent seen them in the flesh but T.E.D. seem to be making a nice job

 

[Fiatpuntomk2b]

seen them on punto mk2 earlier
they will look mean on your punto ,its the sort of thing im looking for
what size are they ??

 

[T.E.D. Jordan]

As matthews spent the entire weekend building up the megasquirt PCB, I'll answer - they're 16"

Jordan

 

[Munkul]

:yeahthat:

In the past few days, my desk has went from this:

to a fully working basic MS-2 setup

Then modified with wasted spark and boost control mods

Now running MS-2 Extra firmware and capable of handling a variety of extra options. I have a few more mods still to do, such as knock sensor input and warning LED outputs, but its more or less finished

 

[ChrisUK]

:slayer:

 

[StevenRB45]

impressive stuff

 

[arc]

great work mate.

 

[1.8Stilo]

sweet, whats it running now..

 

[blu73]

Great work, i really want to check this car out in the flesh sometime

 

[Munkul]

cheers

Today Jordan persuaded me that i had to buy one of his universal Cobra Sport backboxes that he's had for years for £40.

So i did the silly thing: i bought it and spent the rest of the day fitting it.

Mocked up:

No pics of MunkulTech bodgery, but it was kinda thrown together with bits of 2 1/4" pipe bends lying around.

Looks tidy though

And what an improvement over the supersprint! Boosts harder, pulls like an express train, and sounds a bit silly. It pops and bangs like crazy on downshifts I estimate its running at least 150bhp now because it feels faster than it did when it was RR'ed at 145bhp, although it now has a sports cat. The boost now peaks at 0.7bar near the limiter, whereas before it only boosted to 0.6bar, thats with no other change!

I dont care for the letterbox tip (who does?) but its a full T316 stainless box with reweldable tips, so when i get a proper stainless system made up from the turbo-back, i can re-use the backbox and have the tip changed at the same time the mid-section is still 1 3/4" so it really needs changed as well to make it a full 2 1/4" system.

worlds worst video, doesnt do it justice really

[nomedia="http://www.youtube.com/watch?v=cPWpf2znvcI"]YouTube- New Cobra backbox[/nomedia]

 

[1.8Stilo]

sweets... is the same as what i had on my stilo, miss the *silly* sound soooooooo much