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Re: [Fot] Indexing plugs

To: 'Kas Kastner' <kaskas@cox.net>, john hasty <jhhasty@gdhs.com>, 'Bill Babcock' <ponobill@gmail.com>
Subject: Re: [Fot] Indexing plugs
From: <rodkent@cox.net>
Date: Mon, 7 May 2012 11:32:43 -0400
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Hi, I don't think there is much to be gained by indexing on our motors, however 
I have always felt it important to use copper washers to regulate the thread 
ingagement in the head. I think its important not to have any of the bottom 
threads of the plug appearing in the combustion chambers, those sharp edges can 
act like a glow plug, a good cause of pre ignition.thx
---- john hasty <jhhasty@gdhs.com> wrote: 
Yes, Bill....that's where my dealing with indexing came from, TZ250
Yamaha's....we found indexing them towards the rear transfer ports worked
best.  


John H. Hasty
Attorney At Law
Guthrie, Davis, Henderson & Staton, P.L.L.C.
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Charlotte, North Carolina 28203-5113
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-----Original Message-----
From: Bill Babcock [mailto:ponobill@gmail.com] 
Sent: Saturday, May 05, 2012 11:20 PM
To: Kas Kastner
Cc: jhhasty@gdhs.com; MadMarx; fot-bounces@autox.team.net; fot
Subject: Re: [Fot] Indexing plugs

Mostly a carryover from high perfornace two stroke motors where transfer
port swirl could play havoc with a spark. Or at least people thought it did.
One more thing to fiddle with. 
On May 5, 2012, at 6:57 PM, Kas Kastner wrote:

> Indexing to me was making sure that the ground electrode was not in a 
> position where the piston could not close the gap and kill the engine.
More Power?
> You're kidding! TR-3,4 engines do not have that problem unless you run 
> a pop-up.
> 
> Never be beaten by equipment
>> From: jhhasty@gdhs.com
>> Date: Sat, 5 May 2012 08:17:40 -0400
>> To: tr4racing@googlemail.com
>> CC: fot-bounces@autox.team.net; fot@autox.team.net
>> Subject: Re: [Fot] Indexing plugs
>> 
>> Making the open end of the electrods all point to the intake valves
>> 
>> Sent from my iPhone
>> 
>> On May 5, 2012, at 4:45 AM, tr4racing@googlemail.com wrote:
>> 
>>> What does indexing mean?
>>> 
>>> Gesendet mit BlackBerry von Vodafone
>>> 
>>> -----Original Message-----
>>> From: sherry robyn <sherryjimmy6116@att.net>
>>> Sender: fot-bounces@autox.team.netDate: Fri, 4 May 2012 20:27:08
>>> To: Friends<fot@autox.team.net>
>>> Subject: [Fot] Indexing plugs
>>> 
>>> Just curious, has anyone seen a documented increase on the dyno from
>> indexing
>>> plugs on Triumph four or six cylinders?
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