(Help) NGK TR55 plug gap
Thread Starter
Safety Car
Joined: Mar 2005
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From: Dardenne Prairie Mo.
(Help) NGK TR55 plug gap
I have done a search and didnt come up with much so I am going to ask this anyway what is the best plug gap for the ngk tr55 plugs on a stock motor with just a blackwing and ghl mag exhaust.
I was told to gap them at .040 by my tuner yesterday when i had my car dyno tuned but i wanted to see what everyone else is gaping theirs at before I install them tonight.
Thanks Randy
I was told to gap them at .040 by my tuner yesterday when i had my car dyno tuned but i wanted to see what everyone else is gaping theirs at before I install them tonight.
Thanks Randy
Drifting
Joined: Nov 2003
Posts: 1,898
Likes: 6
From: Sahuarita AZ
Originally Posted by RTSVET
I have done a search and didnt come up with much so I am going to ask this anyway what is the best plug gap for the ngk tr55 plugs on a stock motor with just a blackwing and ghl mag exhaust.
I was told to gap them at .040 by my tuner yesterday when i had my car dyno tuned but i wanted to see what everyone else is gaping theirs at before I install them tonight.
Thanks Randy
I was told to gap them at .040 by my tuner yesterday when i had my car dyno tuned but i wanted to see what everyone else is gaping theirs at before I install them tonight.
Thanks Randy
Le Mans Master
Joined: Nov 2000
Posts: 6,266
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From: Galloway Twp. NJ
Cruise-In VII Veteran
Originally Posted by torchredfrc
I use NGK TR55IX plugs and I leave them at their factory, out of box, gap which is 0.060 or 0.055 (not sure which).
Race Director
Joined: Oct 1999
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From: Phila PA, Bonita Springs FL
Stock motor & HP, .055-.060..
Add cold air intake, headers (+35-40 RWHP) .055
Heads/cam (add another +50 RWHP) .050
As you go up in RWHP by 50, close gap by .004..
Nitrous cars, cold plug & gap to .040
Add cold air intake, headers (+35-40 RWHP) .055
Heads/cam (add another +50 RWHP) .050
As you go up in RWHP by 50, close gap by .004..
Nitrous cars, cold plug & gap to .040
Race Director
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From: Fort Wayne IN
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General rule of thumb I've used for a N/A application is for every ~100 HP added, close the gap by .010, and with the addition of a hotter ignition, open it back up by .005.
Thread Starter
Safety Car
Joined: Mar 2005
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From: Dardenne Prairie Mo.
Thanks guys I call my tuner this afternoon and when he told me .040 we were talking about nitrous and fi cars so it was my fault and you are all right they are supposed to .055 just like everybody is saying.
Thanks Randy
Thanks Randy
