Cylinder Head

[kelvinnoel]

Can I get a little information, I,ve a chance to buy a head of a rs 2000 escort with a fr31 cam ,but it has small spark plugs in it I don,t think this is a problem , will it fit or am I just wasting money

[Guest mcramsay]

Will it fit what?

[kelvinnoel]

2litre Sierra pinto engine 1985

[Snapperpaul]

RS 2000 head is just a standard Pinto head, you should check if it has some porting done and larger valves or it has no more value than a standard head.

The fact it has small plug inserts leads me to believe it has been skimmed a lot for higher compression. I have a head with plug inserts and 10mm plugs this is to stop the Pistons hitting the plugs at TDC.

Check the cam as I did not think there was an FR31. The head I have cam with an RL22 and I am using an RL31 on that engine with 10.7 to 1

Edited May 21, 2017 by Snapperpaul

[Snapperpaul]

I stand corrected there is indeed an FR31, described as mild road with a 260 duration

You would not be needing high compression ratio with this cam and 10 to 1 would be the limit negating the need for plug inserts.

 

There is nothing wrong with plug inserts and they give you more options for later tuning.

 

I would still check what work the head has had as the RS2000 head was originally just a standard one

[kelvinnoel]

Thanks for the input guys very much appreciated