spark plug issues
11-14-2003, 02:02 AM
#1
Senior Member
True Car Nut
Thread Starter
Join Date: May 2003
Location: Lethbridge, Alberta, _______Canada._______ West Coast Bonneville Fest ___05,06,07 Survivor___
Posts: 8,135
Likes: 0
Received 0 Likes
on
0 Posts
spark plug issues
K well my car usually runs un evenly at idel and resulting in poor mpg, a certified mechanic that my dad knows said that with these cars you MUST go with only AC delco plugs and wires, i have the cheap Delcos in there and cheapo wires 8mm, he mentioned something about the correct heat range, so okay what plug has the correct heat range for my car, also should i go with AC delco wires or MSD? 8mm or 8.5mm???
11-14-2003, 02:17 AM
#2
Junior Member
Posts like a Ricer Type-R
I just posted some info from NGK (the maker of AC Delco Plugs) a few days ago. They told me with regards to heat ranges (talking about the NGK V-power plug which I'm addicted to):
On an unmodified L67, the proper heat range would be the TR55 V-Power.
On a Modified L67 (with regards to boost) use the TR6.
These are both copper plugs, which the L67 prefers. Don't use Platinums of any type, and not sure about Irridiums.
You should use the STOCK plug that GM recommends or the TR55 NGK V-Power in an un-modified L67.
On an unmodified L67, the proper heat range would be the TR55 V-Power.
On a Modified L67 (with regards to boost) use the TR6.
These are both copper plugs, which the L67 prefers. Don't use Platinums of any type, and not sure about Irridiums.
You should use the STOCK plug that GM recommends or the TR55 NGK V-Power in an un-modified L67.
11-14-2003, 02:51 AM
#3
Senior Member
True Car Nut
Thread Starter
Join Date: May 2003
Location: Lethbridge, Alberta, _______Canada._______ West Coast Bonneville Fest ___05,06,07 Survivor___
Posts: 8,135
Likes: 0
Received 0 Likes
on
0 Posts
and if i have future plans for MSD coil packs? TR6?
11-14-2003, 02:53 AM
#5
Senior Member
Posts like a Corvette
Join Date: Oct 2002
Location: N.W. Indiana
Posts: 1,206
Likes: 0
Received 0 Likes
on
0 Posts
Not need to go to TR6 if you plan on getting MSD coil packs. You only need a colder plug if you have a dramatic increase in horsepower. I wouldnt even get the coil packs unless you plan on modding your motor. Otherwise your stock spark & recommended plug is fine.
11-14-2003, 02:56 AM
#6
Junior Member
Posts like a Ricer Type-R
I beat you! 
To back this up and clarify:
BOOST levels are the #1 reason for needing to go with colder plugs. When you finish your pulley swap, intake, and exhaust, change to TR6 (or one heatrange colder of the plug of your choice).
To back this up and clarify:
BOOST levels are the #1 reason for needing to go with colder plugs. When you finish your pulley swap, intake, and exhaust, change to TR6 (or one heatrange colder of the plug of your choice).
11-14-2003, 02:58 AM
#7
Guest
Posts: n/a
the amount of squeeze is what determines your heat range. defintly use prem. fuel.
if you go with a smaller pulley, chip, or anything like that, then go colder. cylinder pressures and timing are the main things to look at when to or not to go colder.
if you go with a smaller pulley, chip, or anything like that, then go colder. cylinder pressures and timing are the main things to look at when to or not to go colder.
11-14-2003, 01:25 PM
#9
Senior Member
True Car Nut
Thread Starter
Join Date: May 2003
Location: Lethbridge, Alberta, _______Canada._______ West Coast Bonneville Fest ___05,06,07 Survivor___
Posts: 8,135
Likes: 0
Received 0 Likes
on
0 Posts
i belive thats what i have but my wires are cheap 8mm i paid like 20 bucks for 6 of em at Auto Value! lol
Thread
Thread Starter
Forum
Replies
Last Post
buickpower3800sc
Performance, Brainstorming & Tuning
4
03-15-2003 04:27 PM
95BonnevilleSESC
1992-1999
7
10-08-2002 11:00 AM