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NGK TR6 or TR55 ???

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Old Apr 1, 2002 | 09:25 PM
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Default NGK TR6 or TR55 ???

Looking at installing plugs on a stock motor.
I have been getting a little detination since the car was new. I was told that the TR6 was the way to go with this problem otherwise go with the TR55.
Any input ?

Also : What should I gap either one of these plugs at ?


Thanks

:seeya
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Old Apr 1, 2002 | 09:43 PM
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Default Re: NGK TR6 or TR55 ??? (Anthony Cleveland)

I installed the TR55's in my 99FRC, I noticed a smoother Idle right away! :D sorry, I can't comment on the TR6's :cheers: :chevy
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Old Apr 1, 2002 | 11:15 PM
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Default Re: NGK TR6 or TR55 ??? (Anthony Cleveland)

Anthony,
I am dumb as a stump on this issue, but I will tell you a well respected C5 tech said NO WAY on the 55's in any C5 he would own.......so, take that for what it's worth. :D
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Old Apr 1, 2002 | 11:23 PM
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Default Re: NGK TR6 or TR55 ??? (Anthony Cleveland)

Ok , so what about the TR6 's ???
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Old Apr 1, 2002 | 11:33 PM
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Default Re: NGK TR6 or TR55 ??? (ZO6LS6)

Anthony,
I am dumb as a stump on this issue, but I will tell you a well respected C5 tech said NO WAY on the 55's in any C5 he would own.......so, take that for what it's worth. :D
Did he say why?? many owners here use them :confused:
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Old Apr 1, 2002 | 11:49 PM
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Default Re: NGK TR6 or TR55 ??? (3VETTES@HOME)

The TR55 is an excellent replacement for the stock platnium tip plug. Great for use with cam/head cars.

The TR6 is colder then the TR55 and well suited for high heat applications such as NOS, superchargers etc.

If you are suffering from detonation with stocker or even a cam head car, then maybe you have other issues such as tuning or poor fuel.

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Old Apr 1, 2002 | 11:57 PM
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Default Re: NGK TR6 or TR55 ??? (Anthony Cleveland)

IMHO If you are having detonation problems a colder plug will just cover up a bigger problem. It is also possible that your platinum pucks have fallen off and increased your gap enough to cause problems. Get some TR-55s and gap them at the stock gap or a little less and see if that fixes it. If not you have another problem that you should fix not cover up :cheers:

Jerry
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Old Apr 2, 2002 | 12:07 AM
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Default Re: NGK TR6 or TR55 ??? (Anthony Cleveland)

Let me back up. The only time this car will detonate is "sometimes" in the summer when its humid and really hot here in TX. I do not believe there is a problem here.

I am still unclear on which plug to pick. A guy at the track that was running crazy times with his stock SS told me about the TR6's gapped at .45, otherwise I would have already purchased the 55's.


Thanks for the input !


[Modified by Anthony Cleveland, 10:27 PM 4/1/2002]
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Old Apr 2, 2002 | 12:34 AM
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Default Re: NGK TR6 or TR55 ??? (Anthony Cleveland)

It sounds to me like you should go with the 55s and close the gap a little. The 6s are for guys with power adders :cheers:

Jerry
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Old Apr 2, 2002 | 01:02 AM
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Default Re: NGK TR6 or TR55 ??? (9D9LS1)

The TR55 is an excellent replacement for the stock platnium tip plug. Great for use with cam/head cars.

The TR6 is colder then the TR55 and well suited for high heat applications such as NOS, superchargers etc.

If you are suffering from detonation with stocker or even a cam head car, then maybe you have other issues such as tuning or poor fuel.
Agree
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Old Apr 2, 2002 | 02:24 AM
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Default Re: NGK TR6 or TR55 ??? (Anthony Cleveland)

Anthony I have the TR6's in mine with no NOS or blower, and have no probs. Gapped at .035 due to using the Nology wires. Otherwise I would gap these plugs at .043.
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Old Apr 2, 2002 | 09:43 AM
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Default Re: NGK TR6 or TR55 ??? (racetchr)

racetchr,

What made you go with the 6's ?

Oh, I will be using the 10.4mm Taylor Thundervolt Wires.......


[Modified by Anthony Cleveland, 8:16 AM 4/2/2002]
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Old Apr 2, 2002 | 02:20 PM
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Default Re: NGK TR6 or TR55 ??? (Anthony Cleveland)

Both are good plugs!
You will not notice the difference between those 2 kinds of plugs.

However I don't think that this plug will eliminate your detonation problem!!
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Old Apr 2, 2002 | 02:43 PM
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Default Re: NGK TR6 or TR55 ??? (Greenbeast)

Nice Toyota... :D :chevy :seeya
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Old Apr 2, 2002 | 06:05 PM
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Default Re: NGK TR6 or TR55 ??? (Anthony Cleveland)

Greenbeast is right. There isn't a noticeable diff in the two plugs. However, I do a lot of highway/high speed driving and found that the 55's showed signs of heat stress. TR6 being a shade colder, haven't had this problem. Using the Taylor wires I would gap at .043. Just my opinion.
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Old Apr 2, 2002 | 09:17 PM
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Default Re: NGK TR6 or TR55 ??? (Anthony Cleveland)

racetchr,

Yea, I had a long talk with the owner of LS1 Motorsports. He spends hours and hours at the track in vettes and Z28's. He said that the TR6 was the way to go. He said that they have actually seen a few more miles per hour at the track with these plugs in stock heads compared to the T55. He got really technical with me, far too tech. for me to explain the reasons to go with a colder plug. But your explanation above was a part of it.
So all and all I ordered the Taylor 10.4mm Wires and the TR6's. Im sure that when its all said and done it really does not make any difference which quality plug you use.

Thanks for the help !
:seeya
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Old Apr 2, 2002 | 09:49 PM
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Default Re: NGK TR6 or TR55 ??? (racetchr)

Stock gap setting is 0.060 (sixty thousands)

Rule of thumb is for every 50hp you should decrease the gap setting by 0.004 (four thousands).

So there are the following three NGK plugs to use on a C5:
Stock heat range
TR55 set @ .059 I've set the gap to .050
TR5 set @ .039 Never used

one step colder than stock
TR6 set @ .035 I've set the gap to .035 while running N20

NGK recommends changing the gap by plus or minus 0.010
Also, as the plugs wears, the gap opens up.


[Modified by C5 YA, 8:50 PM 4/2/2002]


[Modified by C5 YA, 8:55 PM 4/2/2002]
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Old Apr 2, 2002 | 11:27 PM
  #18  
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Default Re: NGK TR6 or TR55 ??? (Anthony Cleveland)

I'm runnin' the TR55's and they have performed flawlessly so far..over 10,000 miles on them and they are clean as new:D
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