Pinto Turbo Conversion - Howto

Cosworth uses low impedance injectors. That can be a problem with Megasquirt, its not designed för low impedance så there are two options. Mount resistors in serie with each injector or get hold of high impedance injectors

For 240hp you need 350-400 cc/min
I´m not sure what the colors on the cosworth injectors stand for.

Hello all, my name is Jason, I live in New Zealand
Im going to be buidling a turbo pinto engine
Using a suck though carb setup
Has anyone done this sorta thing before?
Here is my exhaust manifold

Inlet manifold


Engine ( 205 block)

Yes i have tested that and it worked fairly well
Sadly it´s not possible to use a intercooler, i guess it will be a problem with detonations above 0.5bar. If you want to use more boost you will need some kind of waterinjection

Hello again, can you give me any more info on what to do?
What size turbo
Whats the best way to lower compression
Whats the best type of carb to use

Thanks

ESKIN8R skrev:

Hello again, can you give me any more info on what to do?
What size turbo
Whats the best way to lower compression
Whats the best type of carb to use

Thanks

You need a turbo with carbon seal. Not easy to get hold on, some turbos can be rebuild but elsewere you need to find a turbo that whas fittet to a car with suck through.

Look for pistons from a cosworth, with orginal rods you get compression around 7,5-1 with cosworthrods somewere around 8,6-1.

I recommend a singel weber DCOE 40 or 45

And what about the camshasft? I would like to use a specific cam for Pinto Turbo engines, but I have only found two sites that build it, and any of them reply my messages. One of them is ColtecRacing http://www.coltecracing.com/camshafts.html#pinto

Could anybody help me to find a good cam??

InFlammen skrev:

And what about the camshasft? I would like to use a specific cam for Pinto Turbo engines, but I have only found two sites that build it, and any of them reply my messages. One of them is ColtecRacing http://www.coltecracing.com/camshafts.html#pinto

Could anybody help me to find a good cam??

Why would you want a turbocam? It´s for silly people who want a boring engine. A ordinary camshaft for tuned engines without turbo works fine on a turbo engine. So buy one thats for street use (often called "fast road").

Mmmm... Well, I don't know, I thoght that a specificic cam could be better. Whar is the difference in final result? Why do you say "boring engine"?

What about this one?
Description: KENT CAMS FAST ROAD CAMSHAFT: SOHC PINTO INJECTION

Other Info: 1000-6250rpm .499" LIFT 263deg TIMING 110deg .008"/.010" CLEARANCE

InFlammen skrev:

Mmmm... Well, I don't know, I thoght that a specificic cam could be better. Whar is the difference in final result? Why do you say "boring engine"?

What about this one?
Description: KENT CAMS FAST ROAD CAMSHAFT: SOHC PINTO INJECTION

Other Info: 1000-6250rpm .499" LIFT 263deg TIMING 110deg .008"/.010" CLEARANCE

The difference betwen a turbocam and a ordinary is the overlapp, a turbocam have less overlapp, the meaning with this is to have boost earlier. But will result in a engine that lose some att higher rpm
Here in sweden we prefer to build a powerfull naturally aspirated engine and just lower the compression. Look at my simply but not entirely correct calculation

100hk before, 1bar of boost = 200hk
120hk before, 1bar of boost = 240hk
120hk before, 0.7bar of boost = 200hk

The camshaft you ask about feels a bit close to orginal. around 280 deg and 11-12mm lift will get a nicer engine

Will detonation still occur if I lower the compression ratio and Up the boost?
KENT CAMS FAST ROAD CAMSHAFT: SOHC PINTO (CARB)
2500-7000rpm .442" LIFT 285/280deg TIMING 108deg .010"/.012" CLEARANCE
Would that be a suitable camshaft to use ?

ESKIN8R skrev:

Will detonation still occur if I lower the compression ratio and Up the boost?
KENT CAMS FAST ROAD CAMSHAFT: SOHC PINTO (CARB)
2500-7000rpm .442" LIFT 285/280deg TIMING 108deg .010"/.012" CLEARANCE
Would that be a suitable camshaft to use ?

Lower the compression is a way to avoid detonation. But to low compression will make the engine weak at low rpm.
Fuel with higher octane is another
I suggest you mount a water injection system on a suction turbo system. Infact thats even better than having a intercooler.

The camshaft you listed should work just fine

Hi again
Thanks for all your replys
I have never heard of or seen water injection
Can you tell me more about it?
Thanks

Just finished my holidays!!

Mmm... I'm afraid I am one of those that want a boring engine... because I want it for daily use!! I want a road drivable car, not a drag!!
I have read a David Vizard's book that recommend one of these cams fot my purposes:

http://www.cranecams.com/?show=browseParts&lvl=2&prt=5&Vehicle_Type=Auto&Cylinders=4&Engine_Make=FORD&Year=1971&Engine_Size=2000%20C.C.&partNumber=142211&partType=camshaft

http://www.cranecams.com/?show=browseParts&lvl=2&prt=5&Vehicle_Type=Auto&Cylinders=4&Engine_Make=FORD&Year=1971&Engine_Size=2000%20C.C.&partNumber=142201&partType=camshaft

What should I expect if I use one of these? Which cam would you recommend me to get a "daily useable Pinto Turbo"? (These or any cam, of couse)

Just take one. Its better than orginal so i think it will work fine

Ok. I have a lot more questions...
How about gaskets? Could I use Cosworth YB gaskets, or better performance pinto gaskets? And the cooling system??

Yes you can. I don´t know if there is any better gaskets for pinto, but cosworthgasket works

We use standard cooling system

Mikael skrev:

We use standard cooling system

Standard Pinto cooling system with no overheating problems? Nice!!!!

AND CHEAP!!!!!!

Where could I fit a Cosworth 4x4 intercooler??

hi guys from Israel!
we are in the middle of a turbo project to!
we found this site reacently and since then we are enjoing the gr8 info and pics.
as most "pinto's" are turbo injection, we took a different approach ( maily cause we had a carb pinto 2L ).
tommorow i will start making the exhaust manifold.
until then...some pics of the" fuel managment system" and intake manifold.
who knows which carb is it?

https://2img.net/r/ihimizer/img219/2368/cimg0252bv7.jpg

https://2img.net/r/ihimizer/img219/7439/cimg0255ci1.jpg

https://2img.net/r/ihimizer/img214/1489/cimg0257af6.jpg

YAM

Looks like an Solex. Could it be an Soles 32dis designed for boost?

Yes it is.
From a renault GT 5 turbo.
As well as the turbo - GT25.
We dont know how it will perform, so the whole project is in jeopardi at the moment , but i was hired to make the parts fit, not my problem if it wont start because of this setup.
We purchase some diffrent sizes of jets for him from a Friend who owns a GT5, to make the tuninig as accurate as possible.
i will post more pics when we will have some more progress.
We are also planing to lock the DIF',lower the car and do some reinforcing on the old chasis...

Yam

Sorry for not posting the pics. It was raining yesterday and today so....no progress so far.

Yam

Could somebody write a little guide to fit a Megasquirt manage system on a Pinto Turbo Engine? Like the firs post about the engine and the fifth injector

I don´t think we have anyone in here that knows about megasuirt. I don´t like myself, it´s to much reading to make i work. And the program looks to be designen by a 10 year old child.