NGK TR7 & TR8's (Projected or NON Projected)?
#1
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
I just got my TR7 (3526 BP7EFS) plugs and TR8 (7317 R5724-8) plugs and they are projected tips just like my tr6. I heard someone say they are non projected. Explain? Are these fine for big shots? 175+
#2
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
I called ngk and he recommended a non resistor B8EFS-1049 plug. This is a non projected tip plug. He hasnt heard of much probelms with this non resisitor plug from our type of cars. What do you guys do for 200-250 shot?
I am leary of using a projected tip tr8.
I am leary of using a projected tip tr8.
#6
11 Second Club
Join Date: Jun 2005
Location: Was New Orleans, but swam to Baton Rouge
Posts: 1,537
Likes: 0
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech10year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
I can tell you that the tip is shorter on the BP7EFS plugs. When I placed them in my car I noticed they were about an 1/8 of an inch short compared to a TR6.
Trending Topics
#16
FormerVendor
iTrader: (4)
Join Date: Jul 2005
Location: Glenolden, PA
Posts: 1,954
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
B - 14mm thread diameter
P - Projected Insulator Type
7- Heat Range
EF - Tapered Seat .708" reach
S - Standard 2.5mm D Electrode
The P makes it a projected tip. Try BR7EF.
Nick