Is there a straightforward way of identifying if a Pinto engine has an unleaded head?

If it's an injection head (egg shaped inlet ports), then it will be unleaded. Otherwise, there is some info here on the markings to look out for.

is the head still bolted to the engine or not?

if the former I cannot help. As Austin Powers would say, pintos are not my bag, baby

[Edited on 26/10/09 by 02GF74]

Alas, the engine is still all sellotaped together... will just assume it's leaded!

Cheers!

Just use LRP. It wont hurt if its unleaded will it?? Ive run leaded engines on unleaded before, and have had no noticable detriment. Have run it for ages too.

Taken from the link in Bilbo's post:

SOHC Pinto Engines
All engines produced after 01/89 are suitable for use with unleaded fuel. For all other engines, an identification mark (adjacent to No 4 spark plug) must be present to designate suitability for unleaded. These are:
* 1.6 - M, MM or N, NN
* 1.8 - S, SS
* 2.0 - P, PP or R, RR


No need to dimantle.. just look for P, PP or R, RR "adjacent to No 4 spark plug"

Like this.
Rescued attachment Unleaded.JPG

Ta very muchly!

quote:

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Originally posted by MakeEverything
Just use LRP.

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This is the stuff i use in my old bikes

Plus i used it my old Porsche for many years with no problems.

Mike

[Edited on 26-10-2009 by miikae]