Gizmo Posted August 20, 2019 Report Share Posted August 20, 2019 New to your forum so 😀 Gotta say a massive hiya guys 👍 Just doing a full Resto on a gt6 mk2 n oh boy it’s fighting me lol, was hoping to go for the first fire up with the rolling chassis the weekend but came across a push rod head scratch. I’ve replaced everything apart from the pedestals on the top end ( rocker, rod, springs etc ) and carefully mirrored the old one but the push rods are rubbing on the casting where they come through the head, ( approx 3- 4m/m ) mainly on three exhaust rockers. I can’t space them from the pedestals as this would throw the rocker of central to the valve. These parts were bought from rimmer bros Just wondered if anyone has come across this before ?? Thanks 👍 Link to comment Share on other sites More sharing options...
Pete Lewis Posted August 20, 2019 Report Share Posted August 20, 2019 Sounds like you have been sold the wrong handed rockers or the fitted order is incorrect ?? so the offset is incorrect , theres no other reason I can think of Pete Link to comment Share on other sites More sharing options...
JohnD Posted August 20, 2019 Report Share Posted August 20, 2019 WElcome Gizmo! And, pictures, please! Without a look at what you describe, even the gurus can't advise. John Link to comment Share on other sites More sharing options...
Gizmo Posted August 20, 2019 Author Report Share Posted August 20, 2019 Hiya guys thanks for your response, After posting this today i put the old rockers ( nothing worse than old rockers lol ) back on and no problems at all so I contacted Rimmers who have been really helpful n after a few hours of emails pics and phone calls they said their stock are all the same and have offered a refund upon returning them. Mmmmmm so looked on James paddock and they us the same part number as rimmer so do that mean same dodgy batch ? Any one got any ideas or have a good set I could buy, plus I’m after a Lucas distributor with tacho drive Cheers 👍 Link to comment Share on other sites More sharing options...
JohnD Posted August 20, 2019 Report Share Posted August 20, 2019 If supplier is taking them back, pictures even more useful, in case they sell them again! J. Link to comment Share on other sites More sharing options...
Gizmo Posted August 20, 2019 Author Report Share Posted August 20, 2019 Link to comment Share on other sites More sharing options...
Gizmo Posted August 20, 2019 Author Report Share Posted August 20, 2019 I’ve more pics with them in place if it helps anyone, , kinda disappointing now as not sure what to do, can I regrind my old ones ? Link to comment Share on other sites More sharing options...
johny Posted August 20, 2019 Report Share Posted August 20, 2019 Surely you need 6 of each type 109023 and 109024 both of which Rimmers list? However if they cant get it right Canleys have them and much cheaper..... 1 Link to comment Share on other sites More sharing options...
JohnD Posted August 20, 2019 Report Share Posted August 20, 2019 Are the old ones pitted where they bear on the valve stem? It's a controversy. Some say the faces were hardened, so that they just wear the faster if that is worn through. Others disagree. Grinding the surface down will reduce the adjustment available, but the screws are probably long enough. No harm in trying, if you inspect them from time to time. Don't forget that a feeler gauge will bridge a pit, and gve you a false reading. Some just accept pitted rockers and use a "ClickAdjust" tool that will still set the gap correctly. Those new rockers do not look right! And your measurement proves it - send it to your supplier! JOhn Link to comment Share on other sites More sharing options...
Pete Lewis Posted August 20, 2019 Report Share Posted August 20, 2019 I would say most rockers are gas flame hardend it was how things were done back then, Easy to fettle the ridge caused by wear , leave the stem contact zone alone but remove the feeler bridge effect Try to keep rockers and pushrods and followers paired. As they wear together Pete Link to comment Share on other sites More sharing options...
JohnD Posted September 3, 2019 Report Share Posted September 3, 2019 Pete, I don't understand, please explain? The valve stem wears a pit, not a ridge in the rocker, so do you refer to something else? John Link to comment Share on other sites More sharing options...
Colin Lindsay Posted September 3, 2019 Report Share Posted September 3, 2019 On 20/08/2019 at 18:44, johny said: Surely you need 6 of each type 109023 and 109024 both of which Rimmers list? However if they cant get it right Canleys have them and much cheaper..... There are two different rockers in that photo; the new one is a closer match to the one to the right. Do you have the approximation of the left-hand one in the top photo? As Johnny says there are two different rockers, left hand crank and right hand crank or odd and even. You can see the offset of each in my photo at the bottom. Hope it helps in illustrating. Incidentally the part number is the same regardless of supplier, so Paddocks and Rimmers may have different manufacturers of the same part. Link to comment Share on other sites More sharing options...
johny Posted September 3, 2019 Report Share Posted September 3, 2019 Think Gismo must have sorted it out Colin.... Link to comment Share on other sites More sharing options...
RogerH Posted September 3, 2019 Report Share Posted September 3, 2019 1 hour ago, JohnD said: Pete, I don't understand, please explain? The valve stem wears a pit, not a ridge in the rocker, so do you refer to something else? John Hi John, you may well find that that pit, coincident with the end of the valve stem, is not wear (as in worn away) but the hardened surface pushed into the softer parent material. Therefore if you carefully grind away the unused area of the arm tip then you still have a hardened contact surface. Roger Link to comment Share on other sites More sharing options...
JohnD Posted September 3, 2019 Report Share Posted September 3, 2019 Surely, surrounded by a ring of softer base material? And, if you grind away the unused area, an island of hard material in a sea of soft. The analogy might be a chocolate covered marshmallow. The final result might be an engineering hoodoo! Not reassuring! John Link to comment Share on other sites More sharing options...
dougbgt6 Posted September 3, 2019 Report Share Posted September 3, 2019 24 minutes ago, JohnD said: a chocolate covered marshmallow Always the last one left in the Quality Street Tin. db Link to comment Share on other sites More sharing options...
Colin Lindsay Posted September 3, 2019 Report Share Posted September 3, 2019 That photo reminds me of the horror pictures of teeth you see in the Dentist's. Probably after too many Quality Street. Link to comment Share on other sites More sharing options...
poppyman Posted September 3, 2019 Report Share Posted September 3, 2019 Do you have to be posh to live in a Quality Street? or is that just to afford a visit to the Dentist...... Tony. Link to comment Share on other sites More sharing options...
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