pfenlon Posted May 9, 2020 Report Share Posted May 9, 2020 Any tips on removing these little scoundrels please. Quote Link to post Share on other sites
Motorsport Mickey Posted May 9, 2020 Report Share Posted May 9, 2020 Hi Pete, One oversize socket ( or tube) onto the outside of the rocker bush circumference, then press it out using another smaller socket or tube the other side in a vice. Mick Richards Quote Link to post Share on other sites
pfenlon Posted May 9, 2020 Author Report Share Posted May 9, 2020 Thanks will give it a go. Quote Link to post Share on other sites
pfenlon Posted May 9, 2020 Author Report Share Posted May 9, 2020 and as if by Magic, took 20 mins thanks for the tip, best Pete Quote Link to post Share on other sites
stillp Posted May 9, 2020 Report Share Posted May 9, 2020 Fitting the new ones might be a bit trickier... Have you got the reamer Pete? Pete Quote Link to post Share on other sites
james christie Posted May 9, 2020 Report Share Posted May 9, 2020 Needs to be an ajustable reamer to get them nice and tight.... james Quote Link to post Share on other sites
Ian Vincent Posted May 9, 2020 Report Share Posted May 9, 2020 In my experience, they don’t always need reaming. i used a vice to press the new bushes in but I found it helped to file the leading edge so that they press in squarely. Rgds Ian Quote Link to post Share on other sites
ed_h Posted May 9, 2020 Report Share Posted May 9, 2020 I reamed mine, but with a fixed reamer. I dont remember the size, but it was the measured shaft size + 0.002. Ed Quote Link to post Share on other sites
BlueTR3A-5EKT Posted May 10, 2020 Report Share Posted May 10, 2020 (edited) 5/8" if I remember correctly. - Same as trunion pin. What I did find was that aftermarket rockershafts varied in size and one was full of manufacturing crud. (noted elsewhere on TR6 rocker shafts) Here is the ones I did on 24th January 2020 page 12 Cheers Peter W Edited May 10, 2020 by BlueTR3A-5EKT Quote Link to post Share on other sites
ed_h Posted May 10, 2020 Report Share Posted May 10, 2020 Like jewelry... Quote Link to post Share on other sites
pfenlon Posted May 10, 2020 Author Report Share Posted May 10, 2020 Well, I haven't fitted the new bushes, for I'm having the rocker tips refaced tomorrow. Didn't know they needed reaming though, will try one, and if that fails, its off to TR Bitz, and get Johnny to do them. Quote Link to post Share on other sites
pfenlon Posted May 10, 2020 Author Report Share Posted May 10, 2020 20 hours ago, stillp said: Fitting the new ones might be a bit trickier... Have you got the reamer Pete? Pete No! see last post, Quote Link to post Share on other sites
RogerH Posted May 10, 2020 Report Share Posted May 10, 2020 Hi Pete, the bushes usually do need reaming. When you take them to TRBitz take the shaft as well. Roger Quote Link to post Share on other sites
michaeldavis39 Posted May 10, 2020 Report Share Posted May 10, 2020 Do TR Bitz do the full rocker shaft refurb as I was thinking of sending my complete rocker assembly away for rebuild with the usual upgrades of hardened shaft and bushed rockers? Michael Quote Link to post Share on other sites
Nigel Triumph Posted May 10, 2020 Report Share Posted May 10, 2020 Don't know if TR Bitz can do this but Ivor Searle certainly can. They did a nice job on the rocker assembly for the 2.5 litre engine I built last year. Nigel Quote Link to post Share on other sites
michaeldavis39 Posted May 10, 2020 Report Share Posted May 10, 2020 Thanks Nigel I've not heard of Ivor Searle so a great heads up. Is it also worth removing the spring tensioner from between each rocker arm and replacing with spacers would you say? Michael Quote Link to post Share on other sites
Nigel Triumph Posted May 11, 2020 Report Share Posted May 11, 2020 15 hours ago, michaeldavis39 said: Thanks Nigel I've not heard of Ivor Searle so a great heads up. Is it also worth removing the spring tensioner from between each rocker arm and replacing with spacers would you say? Michael Ivor Searle are based in Soham, Cambs and are the biggest engine independent remanufacturer in the country. Here's their website: https://www.ivorsearle.co.uk/ They do modern engines and a lot of classic engine work. The TSSC are an agent for Ivor Searle and my rocker shaft was done through their club shop. Nigel Quote Link to post Share on other sites
michaeldavis39 Posted May 11, 2020 Report Share Posted May 11, 2020 So I take it that you sent your complete assembly to them and told them what you wanted doing. Around what sort of price did the work cost? Just so I can plan ahead with costings of various parts thank you. Michael Quote Link to post Share on other sites
Nigel Triumph Posted May 11, 2020 Report Share Posted May 11, 2020 23 minutes ago, michaeldavis39 said: So I take it that you sent your complete assembly to them and told them what you wanted doing. Around what sort of price did the work cost? Just so I can plan ahead with costings of various parts thank you. Michael As above, I had the job done via the TSSC, who offer a 'reconditioning' service done by Ivor Searle. Their process is strip, chemically clean, inspect, reface rocker tips, re-bush the rockers (I assume reamed to size), then reassemble on a new shaft. The price to TSSC members is £170 for a 6 cylinder set, less for 4 cylinders. It's a simple way to get this job done, though DIY would of course be much less expensive. I don't whether Ivor Searle deal direct with the general public or only through agents. For my day job, as a classic car magazine photographer and writer, I spent a day in February at Ivor Searle to shoot a feature on a classic engine overhaul.They have a factory building that specialises in classics engines, separate from their huge modern engine remanufacturing plant. It's a very impressive operation and I would be very confident about the quality of their work. There were several TR, Stag and smaller Triumph engines going through their plant while I was there, plus MG, Austin Healey, Jaguar and many more. Nigel Quote Link to post Share on other sites
trchris Posted May 11, 2020 Report Share Posted May 11, 2020 Hi Michael I used (via TRGB) Ivor Searle for a crank regrind and little end replacement on my 4a as Nigel says they have a separate unit for classic engines TRGB do an exchange rocker shaft with rockers, which I would think is done by Ivor Seale, off the shelf. Chris Quote Link to post Share on other sites
michaeldavis39 Posted May 11, 2020 Report Share Posted May 11, 2020 Great information guys appreciate it muchly. Has anyone put the spacers in between the rockers or have you kept them as standard with the springs as I've read spacers are better but have no experience of this? Michael Quote Link to post Share on other sites
BlueTR3A-5EKT Posted May 11, 2020 Report Share Posted May 11, 2020 On 10 May 2020 at 3:19 PM, pfenlon said: Well, I haven't fitted the new bushes, for I'm having the rocker tips refaced tomorrow. Didn't know they needed reaming though, will try one, and if that fails, its off to TR Bitz, and get Johnny to do them. Based on a TR 2/4A rocker shaft being 5/8". (20/32") . A 19/32 to 21/32 expanding reamer will cost £15 plus delivery. Then you will also have the reamer to do TR2-4 front wishbone to trunnion bushes. ...and the bushed idler conversion on sidescreen cars. https://www.tracytools.com/straight-taper-reamers/19-32-21-32-adjustable-reamer Peter W Quote Link to post Share on other sites
Motorsport Mickey Posted May 11, 2020 Report Share Posted May 11, 2020 33 minutes ago, michaeldavis39 said: Great information guys appreciate it muchly. Has anyone put the spacers in between the rockers or have you kept them as standard with the springs as I've read spacers are better but have no experience of this? Michael Michael, If you stripped the rocker cover off almost every car in a paddock at a race car meeting you will find almost (I can't swear for everybody) all will have binned their springs and replaced with spacers,...does that give you a clue ? The spacers are consistent in their spacing range (even allowing for heat expansion) and cannot adopt a pulse effect where an overrev can cause a rocker to adopt a sideways motion (because of side forces of tappet feet not being 100% parallel to the valve tip or rocker on an overhead cam engine) as rockers controlled by springs can, causing the rockers to shuffle along the rocker shaft (not in inches you understand). They do need fitting carefully ensuring a gap for expansion is allowed at either end of the spacer tube. They are just allround better. Mick Richards Quote Link to post Share on other sites
Richard71 Posted May 12, 2020 Report Share Posted May 12, 2020 Where would be the best place to source the solid spacers, the usual places? Richard. Quote Link to post Share on other sites
stuart Posted May 13, 2020 Report Share Posted May 13, 2020 13 hours ago, Richard71 said: Where would be the best place to source the solid spacers, the usual places? Richard. Racetorations would probably be your best bet. Stuart. Quote Link to post Share on other sites
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