Any thoughts on use of "roller rockers"?
Needle bearing type or bronze bushing?
Clark
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>From: Charlie B.[SMTP:cb1500@erols.com]
>Sent: Wednesday, September 03, 1997 3:08 PM
>To: triumphs@autox.team.net; Anne van Leeuwen
>Cc: triumphs@autox.team.net
>Subject: Re: Increasing TR6 oil usage after rocker oil feed modification
>
>Anne,
>
>I think the top end oilers are getting a bad rap. I've had one on my
>Spit for about 2 years now with no excessive oil consumption.
>
>I guess if you have bad valve guides, the extra oil provided by the
>oiler will find it's way into the combustion process. This would show up
>when the car is first started due to the extra oil seeping past the worn
>guides and then quickly burning off when the engine is started. See if
>your plugs have a sandy looking deposit on the business end--a good sign
>you're guides are going.
>
>The last engine I took apart for rebuild had severly worn rocker arms
>and shaft. Just replacing the parts on a four-banger was expensive. This
>rebuild will also be receiving one of my homemade external oilers. If
>"6" engines are anything like Spit engines, the rocker assembly is the
>very last area to receive lubrication.
>
>Hope that helps,
>Charlie B.
>Spitfire Pilot
>
>
>
>
>> Recently I installed an external rocker assembly oil feed line on my 1972
>> TR6 engine, after which oil consumption increased considerably. Before the
>> modification the engine used hardly any oil, now the level is dropping
>> steadily. Also after starting a still warm engine some blue smoke comes out
>> of the exhaust. I guess the oil is disappearing via the valve stems. I
>> checked for leaks: no problems at the connections.
>>
>> Does anybody have similar experiences? I've never seen the internals of the
>> engine: can somebody explain why this could happen?
>>
>> Anne van Leeuwen
>> anne.van.leeuwen@vitatron.com
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