Pinto Turbo Conversion - Howto

Hello! I've just found this forum.

I'm from Spain, and I am also collecting information and parts in order to make my Pinto Turbo, to fit my '88 Sierra 2.0is. I would like to get about 200-230 bhp.
I will use a Cosworth bottom end with 205 block and a big valve head.

I don't know what head gasket and what camshaft could be a good option to fit in. Could you help me with this items?

On the other hand you talk about add a set of 4 new injectors that works when a pressure switch send a signal. I have thought about keep on EFI injection system, but change the original injectors and fit a set of dark blue or dark green set from a Cosworth, and manage EFI with a Megasquirt ECU (English people says that I can virtually plug and play it, but I don't know how to do it step by step).

Oh, the last quetion (at this moment). Where dou you think the air flow meter is better situated? Between the air intake and the turbo, or between the turbo and the inlet manifold?

Sorry for my bad "English" and many thanks for your help!!


Very impressive Swedish cars!!

ohh spain welcome =)

the english is very good i think and u will sure get some answers soon!

Yes, a few of us don't like fibreglass and prefer engine tuning... But only a very little few. So we have to look for help in English... or even in Swedish!!
I have seen something about a Pinto Turbo conversion running a Megasquirt ECU, but my Swedish is already too little to understand it (about ten words )

hehe..
we have a turbo conversion guide in english to, but Mikael can surely answers your questions..

Yes, I have read the English Pinto Turbo conversion, but it is not exactly what I would like to do. I would prefer learn more about Megasquirt way.

ok, just wait and u will get the info u need i think!

Oh, no problem, mate. I am not in the hurry, as I am still collecting parts to do it. Just for learn step by step.

Hi and welcome!

Standardgasket works fine actually. I tested 1.3bar so far and no problem.
If i where you i would look for a camshaft that has approx 280-290 duration and 11-12mm lift.

A lot of people here in sweden have Megasquirt in their cars and it seems to work fine. I have installed MS in my Capri (not tested yet), really simple byt demands some electrical talent. You can just cut of and change the electrical socket to a 37 pin socket and remove the airflowmeter and mount a airsensor instead. Hard to explain and i cannot help you more than that.

the airflowmeter is best mountet on the suction side. But you don´t need that with megasquirt which need the following sensors

1. Throttle position sensor
2. Air temp sensor
3. coolant temp sensor
4. MAP sensor (built-in)
5. idling solenoid (not required)
6. Lambda sensor

For more help look here

http://www.megasquirt.info/

This is just what I needed! But I have to study a lot!
Are there standard ignition maps for an engine like I want to do?

What about injectors?
I want to change original ones for a set of Cosworth injectors, but what colour?
I wish about 200-240 CV, at 1 or 1,2 bar.
In that case, what will be the correct colour? Dark blue from a 4x4, greens or greys?

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