which spark plugs?

[papitotito]

i just got my freshly rebuilt f motor back into my fj40 and when i went to napa to purchase spark plugs the guy told me and showed me two different spark plugs. one had a shorter end than the other. how can i tell which spark plugs i need?

 

[dfmorse]

I use Champions in my FJ40; but here is what u need:

From Haynes manual 313, page 92; NGK B5ES; gap around 0.032 inch.

NGK.com - Cross Reference Search Results

...

 

[71/monarch]

I've got champions in my forty and NGK in my pig.
dfmorse cover it, you should be good.
good luck

 

[IDave]

The reason he showed you two different plugs is because the older F135 engines require a shorter plug than the later F145, F155 and 2F engines.

It really helps to tell us what engine, etc you have when you ask questions.

 

[papitotito]

my motor is a 1973 f motor.

 

[IDave]

In that case, you need the longer plugs. I am a big believer that the OEM Nippon Denso U Groove plugs will not disappoint.

 

[papitotito]

thanks Idave.