2.0TS -97 spark plug gap? - Alfa Romeo Forum
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2.0TS -97 spark plug gap?

Trying to sort out how I should set the gap on the plugs of my GTV 2.0TS -97.
Work shop manual says 0.6-0.7mm and only one spec is given, so I take it that it's valid for both plugs.
Some Googling gives me 0.9 for the large plug and 0.8 for the small one. Other internet sources states 0.8 for the large plug.

Any thoughts about this?

/RedTop
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I dont think need to re-gap plugs on the TS engine...you buy new ones that are already set at the correct gap. You also need to get the proper NGK Platinums ones which have these pre-set.

Avoid cheaper ones.
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Originally Posted by aamrit View Post
I dont think need to re-gap plugs on the TS engine...you buy new ones that are already set at the correct gap. You also need to get the proper NGK Platinums ones which have these pre-set.

Avoid cheaper ones.
And the correct gap is...?
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Alfa Romeo make the engine. If Alfa Romeo say 0.6-0.7mm, then that's it!

a 48.jpg

If they don't state different for large & small plugs, then they're the same.
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Quote:
Originally Posted by aamrit View Post
I dont think need to re-gap plugs on the TS engine...you buy new ones that are already set at the correct gap. You also need to get the proper NGK Platinums ones which have these pre-set.
Correct.
Quote:
Originally Posted by redtop_68 View Post
And the correct gap is...?
As above.
You buy the correct NGK Platinum plugs, which come pre set and can't be re-gapped.
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Originally Posted by redtop_68 View Post
And the correct gap is...?
You're asking the wrong type of question with this engine chum
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Originally Posted by Spider95 View Post
You're asking the wrong type of question with this engine chum
And btw, what oil should I use?

OK, this is the case:
I'm in the middle of changing my timing belt, and I discovered that the previous owner has fitted Champion RC6YCC as the main plug. This is not a platinum type, but a standard spark plug where you can adjust the gap. The correct thing would be to get new plugs of the correct type, and I will do that, but for now I just wan't to put the engine together as quickly as possible, and I don't have the time to get new plugs right now.

So as Sensingsys says the workshop manual states 0.6-0.7mm, however on the inside of the bonnet there's a sticker that says that this car uses platinum plugs and the gap should not be adjusted, just as aamrit and David C says.

After som consideration I will do like this:
I will adjust the gap on the Champions to a little less than 0.9mm, say 0.8. The car has been running fine, but 0.9 seems like a very large gap for a standard plug.
The side plug is the correct NGK PMR7A platinum type, so I will leave that one as it is.
I will also order new plugs, either platnium type as recommended by Alfa or iridium, which I have very good experience from in other engines.


EDIT:
After some more lurking on plugs i realize that the Champ RC6YCC fitted has wrong heat rating. Rating nr 6 on Champion corresponds to NGK nr 8, and vice versa NGK rating 6 as stated by Alfa corresponds to Champion 9 or 10.

See: http://www.sparkplugs.com/glossaryImages/430.jpg

Last edited by redtop_68; 15-06-12 at 06:38. Reason: More info
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Originally Posted by redtop_68 View Post
And btw, what oil should I use?
Given your location, the type of oil you use could be extremely important...........
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