Re: Spark Plugs for FJ20

[Williams, Ritchie (Vertex Hamilton)]

>From what I understand hotter plugs are more prone to detonation under extreme operating conditions so the colder plug is more suitable for competition. Colder plugs are more prone to fouling though & can be harder to start. I have heard of competion engine being started & warmed up on warm plugs & then changed over to the cold plug for a race. The colder plug actually makes the engine run hotter once going & vice versa. Regards --  Ritchie Williams Manager - Design Technology Vertex Pacific Limited 696 Te Rapa Rd Private Bag HN3044 Hamilton New Zealand ph  64 7 8493 999 fax 64 7 8498 764 e-mail [EMAIL PROTECTED]       Mark Alford wrote: What if you run a plug that is too hot? Will it burn pistons/valves etc or cause other damage? Should you run colder plugs in engines that are being raced due to higher temps? Sorry for all the questions, just trying to get the fine details sorted once and for all. Mark. ----- Original Message ----- From:Rowe, Adam To: [EMAIL PROTECTED] Sent: Wednesday, January 16, 2002 5:41 PM Subject: RE: Spark Plugs for FJ20  If you run too cold a plug you also can cause misfire as you are reducing the combustion chamber temperature.  Which makes it similar to the situation when you first start the motor up, ie. cold. -----Original Message----- From:  Mark Alford [SMTP:[EMAIL PROTECTED]] Sent:  16/01/2002 16:24 To:    [EMAIL PROTECTED] Subject:       Re: Spark Plugs for FJ20 Is it maybe to stop plugs fouling???? Anyone? Mark.   ----- Original Message ----- From: Geordie Smith <mailto:[EMAIL PROTECTED]> To: [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> Sent: Tuesday, January 15, 2002 5:10 PM Subject: RE: Spark Plugs for FJ20 What's the advantage of using a hotter plug then? -----Original Message----- From: [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> [mailto:[EMAIL PROTECTED]]On Behalf Of Anthony La Malfa Sent: Wednesday, 16 January 2002 4:40 PM To: [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> Subject: Re: Spark Plugs for FJ20   I use BP7ES.... they are a colder plug... and I've been told better for reducing detonation.... well thats what I had in my car when I had the DYNO Dun at the Nats   Anthony GOD-20L ----- Original Message ----- From: Mark Alford <mailto:[EMAIL PROTECTED]> To: Ozdat discussion list <mailto:[EMAIL PROTECTED]> Sent: Wednesday, January 16, 2002 1:55 PM Subject: Spark Plugs for FJ20 Hi all, I have noticed some discussion both on this list and others regarding spark plugs to suit FJ20 engines. I have been using NGK BP7es now for a while and have not had any problems. I noticed however that many people are using the hotter NGK BP6es.   Which plugs should I be using? Is there any performance benefit from using the hotter plug or vice versa? Any ideas? Mark.   --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/membersozdat@datascribe.com.au/ ---------------------------------------------------------------------   --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/membersozdat@datascribe.com.au/ --------------------------------------------------------------------- --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/membersozdat@datascribe.com.au/ --------------------------------------------------------------------- --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/membersozdat@datascribe.com.au/ --------------------------------------------------------------------- --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/membersozdat@datascribe.com.au/ --------------------------------------------------------------------- --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/membersozdat@datascribe.com.au/ --------------------------------------------------------------------- --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/membersozdat@datascribe.com.au/ ---------------------------------------------------------------------