spark plugs

Q&A regarding engines, turbos, and intercoolers and power upgrades

Postby toayoztan » Tue Sep 18, 2007 12:45 am

gpmarzan wrote:
WarTowels wrote:I've got some bkr7e's waiting to go in. I'm also wondering if they can be dropped in or if I need to gap them.

-Towels


you gap them


Not always you have to. Otherwise, i think generally just have them gapped at "31". On higher boost/power some run them tighter. However, i'm running 1 bar with the CT27 and I just keep the bkr7e at stock specs (~31 i believe).

Bryan
Members don't see the above ad. Register now - it's free!
2017 Pilot Elite
2014 Juke NISMO RS
1994 Supra TT 6spd
1993 Alltrac - http://www.alltrac.net/phpBB2/viewtopic.php?f=44&t=37466
1977 Celica GT Liftback
2015 Grom
1977 GL1000
User avatar
toayoztan
GTFour God
 
Posts: 6734
Images: 1
Joined: Wed Aug 11, 2004 5:51 am
Location: Oklahoma

1993 Toyota Celica

Postby WarTowels » Tue Sep 18, 2007 5:01 am

I guess I'll just check the BGB and buy a gapper since I don't know what the plugs came at stock.

-Towels
2003 S2000
1985 300TD
User avatar
WarTowels
Gold GTfour God
 
Posts: 6443
Joined: Tue Aug 17, 2004 4:30 am
Location: I live in a garage.

Postby toayoztan » Tue Sep 18, 2007 6:12 am

WarTowels wrote:I guess I'll just check the BGB and buy a gapper since I don't know what the plugs came at stock.

-Towels


Do yourself a favor too and buy yourself feeler gauge set. Skip out on the round metal plug gapper tool.

Bryan
2017 Pilot Elite
2014 Juke NISMO RS
1994 Supra TT 6spd
1993 Alltrac - http://www.alltrac.net/phpBB2/viewtopic.php?f=44&t=37466
1977 Celica GT Liftback
2015 Grom
1977 GL1000
User avatar
toayoztan
GTFour God
 
Posts: 6734
Images: 1
Joined: Wed Aug 11, 2004 5:51 am
Location: Oklahoma

1993 Toyota Celica

Postby etantshi » Tue Sep 18, 2007 5:09 pm

toayoztan wrote:
WarTowels wrote:I guess I'll just check the BGB and buy a gapper since I don't know what the plugs came at stock.

-Towels


Do yourself a favor too and buy yourself feeler gauge set. Skip out on the round metal plug gapper tool.

Bryan


Agreed. You don't want a crooked electrode.
-----
André B.
1991 ST185 (down but not out)
1990 ST185 (lost, but not forgotten)
1996 RZN140 (the daily)
2004 Yamaha R6 (needs a battery)
etantshi
GTFour God
 
Posts: 5749
Joined: Fri Sep 03, 2004 1:05 am
Location: Augusta

Postby WarTowels » Tue Sep 18, 2007 9:48 pm

Will do. Thanks guys.

I'll pick that up when I buy my first set of jack stands.

I will miss my old tree stumps... :lol:

-Towels
2003 S2000
1985 300TD
User avatar
WarTowels
Gold GTfour God
 
Posts: 6443
Joined: Tue Aug 17, 2004 4:30 am
Location: I live in a garage.

Postby etantshi » Wed Sep 19, 2007 12:30 am

Tree stumps!? I thought only the necks down here did that. lol It seems to have spread up north.
-----
André B.
1991 ST185 (down but not out)
1990 ST185 (lost, but not forgotten)
1996 RZN140 (the daily)
2004 Yamaha R6 (needs a battery)
etantshi
GTFour God
 
Posts: 5749
Joined: Fri Sep 03, 2004 1:05 am
Location: Augusta

Postby WarTowels » Wed Sep 19, 2007 10:17 pm

Psssh. We have more trees than you do.

-Towels
2003 S2000
1985 300TD
User avatar
WarTowels
Gold GTfour God
 
Posts: 6443
Joined: Tue Aug 17, 2004 4:30 am
Location: I live in a garage.

Postby gt4tified » Thu Sep 20, 2007 11:25 am

etantshi wrote:Tree stumps!? I thought only the necks down here did that. lol It seems to have spread up north.


And down south.....waaaaaay down south too! lol

Nothing but solid mahogany for me!
ST185 JDM GT-FOUR RC- "White Trash"
[url=http://imageshack.us][img]http://img231.imageshack.us/img231/8264/dynographsmallstretchedmu9.jpg[/img][/url]
gt4tified
GTFour God
 
Posts: 3151
Images: 5
Joined: Wed Mar 30, 2005 3:22 pm
Location: Trinidad, W.I.

Postby furpo » Tue Sep 25, 2007 1:15 am

First post for a while on here and I am already pointing out shit.

Electrodes on spark plugs are made as thin as possible because it is easier for an electron to leap away from a thinner surface than a thicker surface. A precious metal electrode is thinner than a copper electrode because it can handle the heat of combustion in a thinner state. This allows you to run a larger gap which generally helps if you have an idle problem. It does not give you a bigger spark as the spark energy is determined by the coil. If you have made no modifications to your engine you want to run the plug type and gap recommended by the manufacturer. If the manufacturer recommend a precious metal plug and you use a copper plug you will need to tighten the gap.

The only reason you want to go to a colder running plug is because you are seeing signs of the plug overheating. This can be seen as 'chalking' around the electrode.

Roger
don't mind me, i always need help
furpo
Club Member
 
Posts: 897
Joined: Mon Sep 13, 2004 12:45 am
Location: new zealand

Postby Corey » Thu Sep 27, 2007 8:16 pm

I've noticed that the NGK has wires for the 90-91 and 92-32 ST185s.

Whats the difference?

Looking in the service manual for a 90 alltrac.

Recommended Gap .8mm or .31"

According to NGK site, their "oem replacement" plugs for the 90 celica alltrac come in .32"

Also, NGK shows that the BKR6EP-8 Double Platinum plug is the OEM standard replacement for our cars. the '90 service manual supports this -
"Recommend Spark Plug: ND PK20R8 or NGK BKR6EP-8"

It also states that plugs should be replaced every 100k km. which is a hell of a lot more than 2-3 oil changes. but i guess that is with their recommended platinum plugs


Thanks

Corey
Image
User avatar
Corey
GTFour God
 
Posts: 4118
Images: 49
Joined: Sun Feb 11, 2007 12:12 am

1989 Toyota Celica

Postby CDN-GT4 » Thu Sep 27, 2007 11:20 pm

After being around MR2's for the last 8 years, I'll never buy anything other than OEM ignition components. Even if wires are expensive they last for years and years.

This is on the BCMR2 site and I've been using NGK BKR7E's.

MKII TOYOTA MR2 / L4 / 2.0 / 3SGTE
Plug Gap 0.032

SPARK PLUGS
G-Power Platinum BKR6EGP 7092
Laser BKR6EP-8 2215
Iridium IX BKR6EIX 6418

NOTE
Boosted MKII 3SGTE running 14+ PSI
Recommended Plug Gap .028
Recommended Plugs NGK BKR7E 6097
CDN-GT4
Club Member
 
Posts: 445
Joined: Sat Aug 06, 2005 6:46 pm
Location: BC, Canada

Postby smog7 » Fri Sep 28, 2007 12:32 am

so Iridium IX BKR6EIX 6418 should be gaped at 0.032?
-omar
my car doesn't leak oil, it just marks its territory
rally tarmac 1990 st185
User avatar
smog7
GTFour God
 
Posts: 3025
Joined: Wed Sep 27, 2006 8:34 pm
Location: central coast, ca

Postby Corey » Fri Sep 28, 2007 12:46 am

Im not sure.

Oem manual says .31 for platinum NGK's, while NGK's site says .32 for the same plug on a 90 celica alltrac.

im going to go with the manual. but i dont know what it should be for iridiums.
Image
User avatar
Corey
GTFour God
 
Posts: 4118
Images: 49
Joined: Sun Feb 11, 2007 12:12 am

1989 Toyota Celica

Postby CDN-GT4 » Fri Sep 28, 2007 1:34 am

It should be fine. 0.31~0.32 won't make a noticeable difference if you're on stock boost levels.
CDN-GT4
Club Member
 
Posts: 445
Joined: Sat Aug 06, 2005 6:46 pm
Location: BC, Canada

Postby Corey » Fri Sep 28, 2007 6:32 pm

any ideas on why NGk has different lead sets for the 90-91 and 92-93? on 935motorsports, the 90-91 is more expensive too :shrug:
Image
User avatar
Corey
GTFour God
 
Posts: 4118
Images: 49
Joined: Sun Feb 11, 2007 12:12 am

1989 Toyota Celica

PreviousNext

Return to Performance and Power

Who is online

Users browsing this forum: No registered users and 1 guest

cron