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Lotus Exige S V6 Spark Plug Replacement Guide - Engine & Ancillaries/Gearbox - The Lotus Forums Jump to content


Lotus Exige S V6 Spark Plug Replacement Guide


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Straightforward process, but didn't see an obvious thread so took a few snaps whilst doing this tonight.  Time required: an hour or so including a cuppa. Firstly you will need: 6x NGK S

OK. I have not found specific information for ILFR7B8 , but here are general information from NGK about torque depending on spark plug type, size, and cylinder head : https://ngksparkplugs.c

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When they get tight just a very little bit more!  Torque is very low, below what my wrench goes to - likely under 30Nm.  I don't actually see a rating in the Lotus workshop manual, NGK or Toyota perhaps have one.

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OK.

I have not found specific information for ILFR7B8 , but here are general information from NGK about torque depending on spark plug type, size, and cylinder head :

https://ngksparkplugs.com/en/resources/spark-plug-installation

If LFR7AIX  is another compatible reference (according to

 ), we can suppose the appropriate torque is :

Torque Specs: Cast Iron: 18-25.3 lb. ft. Aluminum: 18-21.6 lb. ft.

(21.6 lb.ft = 29.3 N.m - corresponding to the 30 N.m you mentioned as an upper limit)

https://www.ngk.com/product.aspx?zpid=9875

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