Injection Cylinder Head

[Guest alexpink]

Looking for a pinto injection cylinder head for my upgrade plans over winter.

Edited October 25, 2015 by alexpink

[jaimo]

There really rare these alex keep trying auction site as I picked up one for a bargain price

[Guest mower man]

Just have a std 2litre head ported properly and a decent cam ,will get you near 150 on a single 38 dgas and even better on webers mick

[Guest alexpink]

Mick, do you have an estimate of how much it would cost to get it ported?

[cb750]

Burton Power heads are around £600 for a ported head with new guides, valves, springs, cam bearings. CNC machined. I think stage 3 has the bigger valves.

[Guest mower man]

Mick, do you have an estimate of how much it would cost to get it ported?

Pm sent

[Gusty]

Hi,

 

There is an u leaded head on eBay .

 

Cheers

[Snapperpaul]

Injection heads are fetching £175 to £200 nowadays and are the best base for further work.

 

Porting is an art and the only way to know what you've got is to have a flow bench print out

 

In reality the injection head can produce good results by simply having bronze valve guides fitted ( you can grind out the cast bulge) using larger inlet valves and having the port throat under the valve seats widened to suit, then skim to increase compression.

Some cams may need valve Spring seats cutting back for double springs and more fitted height.

 

In reality doing the work on an injection head will cost a couple of hundred quid on top of the purchase price

 

So you mission should you choose to accept it is to look for a ported injection head ready ported with big valves for around £400

[Guest mower man]

The same treatment on a std 2 litre head gives the same results ! mick

[Snapperpaul]

Not quite Mick as the injection ports are higher so shortside turn is more rounded

Even porting a standard non injection head properly you would need to fill the bottom part of the port to match an injection head

 

Any DIY head work will give better results with an injection head

[Guest mower man]

My head mods were carried out by a trusted engine builder tuner/ modifier who has many years of experience and provided the hp I required at a reasonable cost they included porting and reshaping , skimming / chamber s eaqualised/ bronze guide / valve reshpe and a rejet ign tweak rr session it could be 80% done at home in perhaps 2/3 months with a few k's worth of equipment I suppose but the equipment would have been many times the cost ,I rest my case mickj

[Guest 2b cruising]

Now now boys. My dad is bigger than yours.

I rest my head. LoL

Edited November 10, 2015 by 2b cruising

[Guest mower man]

Now now boys. My dad is bigger than yours.

I rest my head. LoL

Nothing to do with your post just trying to show that cyl head work is not easy or cheap mick

[richyb66]

Going back to the basics, isn't the main reason people want injection heads because they'll run unleaded fuel as standard and thereby save the cost of having hardened seats fitted to a standard.

 

Granted they probably do flow better but I think this is really a secondary consideration. Getting heads flowed and bigger valves fitted is all well and good but, much as I'm a fan of the Pinto, it's still only got 2 valves which must impose some limits.

 

Surely Zetecs are at a stage now that their cost per bhp makes them a far more cost effective option where you're not limited by class regulations or the desire to wring as much as possible out of a SOHC. Complete engines are available for little more that the cost of a head skim and 3 angle valve grind.

 

Apologies to alex for the thread hijack - good luck with your hunting.

[Guest Gargoil]

Agreed, but it's not all about bhp figures. Undoubtedly the Zetec is a more efficient and cheaper to source engine, but as a learning tool, for the basics, the pinto is a great place to start. Uncomplicated and with a safety margin where valves and pistons are concerned it means a learner (as in engine maintenance) has a bit of a comfort zone, to work with. Also, there are still a lot of bolt on goodies, to keep the interest level high.

Besides sometimes you need a lump of cast iron in the nose, just to keep the front wheels on the tarmac.....