[Fot] Piston ring end gap

[Kas Kastner]

I cannot remember NOT having to file the ring gap on an 87 MM engine. ) 
Nothing like a nice little 6" mill file for this job although they do make a 
little machine to make certain the ends are square. So they are not 
square???   Plenty of gap and make sure the gaps don't line up....and forget 
it. If not enough, they will sure as h--- break and it is good bye 
compression and hello blowby.
----- Original Message ----- 
From: "Tony Drews" <tony at tonydrews.com>
To: "MadMarx" <tr4racing at googlemail.com>; <fot at autox.team.net>
Sent: Saturday, April 05, 2008 2:30 PM
Subject: Re: [Fot] Piston ring end gap


> Thanks.  I should mention that this is for an 87 mm motor.
>
> - Tony
>
> At 04:07 PM 4/5/2008, MadMarx wrote:
>>Be careful with that.
>>Better more gap then less.
>>I run something around 0.016 and have no blow by.
>>The larger the bore, the more gap you need.
>>
>>Cheers
>>Chris
>>
>>----- Original Message -----
>>From: "Tony Drews" <tony at tonydrews.com>
>>To: <fot at autox.team.net>
>>Sent: Saturday, April 05, 2008 10:57 PM
>>Subject: [Fot] Piston ring end gap
>>
>>
>> > This is for a TR-4...
>> >
>> > I'm in the process of installing pistons and rings.  I ended up with
>> > new liners this time around, and as a result, I actually have to FILE
>> > the rings to get the proper end gap.  The instructions recommend
>> > 0.008" to 0.014" end gap.  My inclination is to go for 0.008, but it
>> > occurs to me that they may expand enough due to heat for that to
>> be a problem.
>> >
>> > Has anyone had problems with broken rings with an 0.008" end gap?
>> >
>> > (Jack is out of town or I'd ask him...)
>> >
>> > Thanks,
>> > Tony Drews
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