Often, but not always, what hapens to cause extra noise is that the
contact patch between the valve stem and the rocker arm wears and the
area outside the contact patch does not wear. I've seen older rockers
with about a .010 groove worn in them. of course when that has
happened, the feeler gauge doesn't feel the right things.
At 08:28 PM 9/21/2007, Jeffrey Barteet wrote:
>Hi, Folks,
>
>Long time no post!
>
>I see where British Parts Northwest ( http://www.bpnorthwest.com ) has
>this new 25D4 distributor for $145. It's a drop in replacement for TR
>3-4a and includes everything except for the dizzy cap.
>
>Almost seems too good to be true. ( Danger, Will Robinson!) I'm not sure
>if if you could have your original dizzy recurved for that. Anyone tried
>it?
>
>Is it a Lucas item ? If it IS a Lucas item, is that good or bad? <wink>
>
>Next subject: Rocker Assembly.
>
>My rockers seem noisy to me even after I've checked my valve
>clearances....twice. ( Yes, I backed off and re-torqued the rocker arm
>pedestals too. ) This assembly has about 110K miles and I'm getting that
>pronounced 'sewing machine' sound from the valve gear.
>
>ISTR several listerati have used 'Rocker Arm Specialists' in Anderson,
>CA. That correct? They're showing a TR 3-4a rocker assembly rebuild on
>your core for $165.
>
>Do they replace the shaft or just rebush the rockers? ( I'm assuming
>they rebush the rockers at the very least )
>
>
>When it's all done, does it still sound like a sewing machine, just a
>quieter one?
>
>Happy Motoring!
>
>-jeffrey
>_______________________________________________
>vinttr4@geneseo.net
>
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uncle jack
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