for those running TR55s...
Thread Starter
Instructor
Joined: Mar 2002
Posts: 153
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From: Orlando FL
for those running TR55s...
Just stopped by Pep Boys to see if they carried NGK TR55 copper plugs (I know - I should be watching the race) and not only had the guy at the counter never heard of the TR55 plug, he said replacing the platinum plug would negatively impact the "late model vette's" computer. I told him I'd never heard of that and he said "check it out". So I am asking the experts. Any merit to this? Thanks.
Le Mans Master
Joined: Oct 1999
Posts: 8,205
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From: Tucson AZ
Re: for those running TR55s... (RogueC5)
There are MANY folks running TR55s, seemingly without problem. I think he meant well, and was being helpful; however, he was off base on this one. I am about to switch to them myself. Good luck. :)
Le Mans Master
Joined: Jan 2000
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From: Poway CA
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Re: for those running TR55s... (RogueC5)
I had trouble locating TR55's as well. None of the mainstream auto retailers will sell you a plug that their book does not call out! I finally found them at a little run-down parts store for $1.40 each! But the counter guy was a Corvette racing guy and he knew exactly why I wanted them.
What we need to know is what make/model calls for TR55's in their book! Then we can go in and say "I need a set of plugs for my 74 Pinto" and they won't try to sell you $10 platinum plugs!
What we need to know is what make/model calls for TR55's in their book! Then we can go in and say "I need a set of plugs for my 74 Pinto" and they won't try to sell you $10 platinum plugs!
Le Mans Master
Joined: Nov 2000
Posts: 6,266
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From: Galloway Twp. NJ
Cruise-In VII Veteran
Re: for those running TR55s... (SDVette)
No problems here!
what do you expect from pep boys! YOU probably know more about cars than the guy behind the counter!:rolleyes:
I found the TR55's at my local NAPA auto parts store. :cheers:
what race?
[Modified by RPOZ4Z, 1:50 PM 3/16/2002]
what do you expect from pep boys! YOU probably know more about cars than the guy behind the counter!:rolleyes:
I found the TR55's at my local NAPA auto parts store. :cheers:
what race?
[Modified by RPOZ4Z, 1:50 PM 3/16/2002]
Drifting
Joined: Aug 2000
Posts: 1,698
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From: Chapin SC
Cruise-In II Veteran
Cruise-In III Veteran
Re: for those running TR55s... (Buckmaster)
He's wrong but I'm not sure why you want to switch anyway. Cartek recommended the TR55s for my engine but that's after significant mods.
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Le Mans Master
Joined: Apr 2000
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Re: for those running TR55s... (FRISKY)
The 55's come at .055 I believe. Most run them there.
There is a TR5 at .050 I believe, but not 100% whether it's exactly the same plug. I think the factory used some TR5's once upon a time.
There is a TR5 at .050 I believe, but not 100% whether it's exactly the same plug. I think the factory used some TR5's once upon a time.
Le Mans Master
Joined: Feb 2002
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Re: for those running TR55s... (RogueC5)
I tried TR55 coppers in my '95 and it idled rougher and didn't run as well as expected. Two well regarded local 'Vette mechanics told me to only use either AC Delco 41-906's (the orig equip platinum plug), or AC Delco Rapidfire platinums (Rapidfire #3 is the cross referenced one for my LT1).
I pulled the NGK's and put in a new set of stocker AC delco 41-906's and it ran really well, noticeably better than with the NGK's. But I used copper based anti-seize compound on the AC delco plugs whereas I had used a generic non-metallic based anti seize on the NGK's, don't know if that had anything to do with it but copper based anti-seize is supposed to be best for a good ground connection to the head.
It might be interesting to see if the guys having good results with NGK's are using the stock plug wires or hotter aftermarket wires. Might have to do with how the plugs work in harmony with the particular type/resistance rating of the plug wires...
I pulled the NGK's and put in a new set of stocker AC delco 41-906's and it ran really well, noticeably better than with the NGK's. But I used copper based anti-seize compound on the AC delco plugs whereas I had used a generic non-metallic based anti seize on the NGK's, don't know if that had anything to do with it but copper based anti-seize is supposed to be best for a good ground connection to the head.
It might be interesting to see if the guys having good results with NGK's are using the stock plug wires or hotter aftermarket wires. Might have to do with how the plugs work in harmony with the particular type/resistance rating of the plug wires...
Race Director
Joined: Aug 1999
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From: GARDENA Ca, State Of Konfusion
St. Jude Donor '05
Re: for those running TR55s... (95_C4_convertible)
One thing I noticed after installing the TR-55, my dyno curve became very smooth, before it was kind of jagged! Maybe I had a bad Delco plug.
Drifting
Joined: Apr 2001
Posts: 1,773
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From: Norman Oklahoma
Re: for those running TR55s... (FRISKY)
What gap?
Jerry
Drifting
Joined: Apr 2001
Posts: 1,773
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From: Norman Oklahoma
Re: for those running TR55s... (J-C-5)
But if you ever need one, email me. I know a darn good one. He is awesome! :yesnod: :lol:
Jerry
