All - The little roller referred to is actually a fibre roller - not
leather. The problem is that over the years the roller gets stiff, won't
roll properly and the cam shoe wears a flat spot on it from the sliding
action. I've done the piece of brass throttle shaft fix a few times - works
well. When my carb rebuilder did my carbs, he simply replaced the cam
rod/shoe/roller assemblies with new replacement parts from Burlen. I'm sure
that the rollers in the new parts are metal, not fibre.
Further to Steve's post, when I was setting everything up, I f**ted around
for hours with different versions of ball-point pen springs / washers, etc.
Couldn't get the choke function to work really 'happily'. Went back to the
tried and true system that has worked for me for 30 years with my BJ8 -
lever return assist springs, just like the dealers used back in the day to
deal with the same problem. In my case, I use a couple of the throttle
return springs hooked to the hydraulic pipe right below the carbs, and the
choke levers. For ease of servicing, I sort of crimp the lower spring hook
so that it won't fall off the pipe when the top hook is released. It has
worked for me all those years - the 'weight' on the choke cable system is
just about right at the dash.
Earl Kagna
Victoria, B.C.
BJ8, BT7 tri-carb
----Original Message-----
From: John Vrugtman
Sent: Monday, November 21, 2011 5:39 PM
To: healeys at autox.team.net
Subject: Re: [Healeys] Cam shoe rod sticking
The leather he is referring to, is the small roller on the end of the
shoe portion of the
brass cam shaft, which rides on a lever of the jet housing, raising and
lowering the jet.
Pauls fix is to replace that piece of leather with a brass replacement.
Very clever.
Item 26 of page MD7 of the parts list.
John
64/66 BJ8s
On 11/21/2011 8:05 PM, Bob Spidell wrote:
> Sure would like to see some photos ... I can't visualize where the leather
> goes.
>
> Bob
>
>
> On 11/21/2011 4:41 PM, edic at tampabay.rr.com wrote:
>> Bob Johnson, Steve Byers and David Porter:
>> Last Saturday, 19 Nov., the Tampa Bay Austin Healey Club had a Tech
>> Session
>> at Paul Tsikuiss shop, Tsikuiss Classics, Lakeland Florida. Paul is a
>> charter member of our club and has been restoring cars for 31 years.
>> Our tech session was about carburetors.
>> Paul asked the BJ8 owners if they had to place one hand on the dash
>> before
>> pulling the choke cable, and if we had return springs installed. Of
>> course
>> we all answered that we did. He showed us why that is.
>> There is a leather piece that the cam sits on and when it is new it
>> rotates,
>> but after years of heat and cold, water and oil and whatever, it becomes
>> hard and the cam cannot rotate on it, so consequently the choke lever
>> does
>> not return to it resting place without the help of a spring. What Paul
>> did
>> to correct that problem was to: 1. Remove the brass cam shaft and polish
>> it
>> 2. Remove the leather piece and install a piece of brass tubing, he used
>> an
>> old throttle shaft cut to fit the opening and secured it with a nail,
>> head
>> on one side and peened on the other. If you dont have a throttle shaft I
>> believe he said a 5/16 brass tube cut to size would work. Each of us got
>> to
>> hold the carb he had set up and it worked perfectly, no springs will be
>> needed. Also, when he reinserted the cam shaft he lubricated it with
>> Dri-Slide. This is graphite in a liquid that once applied, the liquid
>> evaporates and the graphite stays, and no dirt will stick to it. This
>> Dri-Slide can be bought at gun shops. I hope I explained it well enough
>> because I am going to do it myself and I plan to do mine in the near
>> future.
>> Also, Paul showed us Nash Healey #1 that he had just finished restoring
>> and
>> it was magnificent.
>>
>> Mel Brunet
>> HBJ8L/39749
>> Land O Lakes, FL
_______________________________________________
Healeys at autox.team.net
Donate: http://www.team.net/donate.html
Suggested annual donation $12.75
Archive: http://www.team.net/archive
Forums: http://www.team.net/forums
Unsubscribe/Manage:
http://autox.team.net/mailman/options/healeys/kags at shaw.ca
|