haggis Posted November 16, 2020 Report Share Posted November 16, 2020 Hi all, just looking around to see about replacing my rocker shaft and arms, and I noticed Rimmers do an uprated shaft and rockers that are bushed and need honing to fit, anyone have any experience of them? Any good? I did once see some orange roller rocker arms for modified engines, I think jigsaw used to sell them, anyone know if these are still available anywhere? Just weighing up my options. thanks hag Link to comment Share on other sites More sharing options...
Iain T Posted November 16, 2020 Report Share Posted November 16, 2020 Haggis, I've just changed my rockers ( see Tappet Noise post). I finally used the bushed rockers and shaft from Moss and had the bushes honed to give 1-2 thou clearance from the measured shaft, they vary slightly in diameter hence the bushes need machining to match. In my opinion the correct way to go but not the cheapest. All up mine cost £350 including stripping old assembly and reassembling with new parts, roller rockers will set you back close on £1000 for no perceptible gain. Iain Link to comment Share on other sites More sharing options...
Colin Lindsay Posted November 16, 2020 Report Share Posted November 16, 2020 Moss Europe do them as well but they're £1000 for the 6-cylinder and £800 for Spitfire / Herald... https://www.moss-europe.co.uk/roller-rockers.html You can get lots of them in the USA, it seems much cheaper once all the additional costs are taken into consideration, a firm called Goodparts is very highly recommended. Link to comment Share on other sites More sharing options...
Iain T Posted November 16, 2020 Report Share Posted November 16, 2020 The place that machined my rockers had three sets of TR4 roller rockers in from a client. The rollers turned up unassembled and some didn't fit on the shaft! Also one set had 3 inlet and 5 outlet rockers?!?! I'm sure the Moss ones are fine but a lorra dosh! Link to comment Share on other sites More sharing options...
Anglefire Posted November 16, 2020 Report Share Posted November 16, 2020 I bought a new rocker shaft from Paddocks - bushed and assembled though no springs so you have to replace with existing or new - or use the fixed spacer type ones - I didn't bother given the use of my car. £140 plus delivery and the dreaded. https://www.jamespaddock.co.uk/rocker-shaft-assembly-mk111iv1500-with-bushed-rockers144962xk Link to comment Share on other sites More sharing options...
haggis Posted November 16, 2020 Author Report Share Posted November 16, 2020 Thanks guys. Wow, £1000 for roller rockers, that’s crazy. I’m gonna go for the uprated items I think. Thanks for all your help. hag Link to comment Share on other sites More sharing options...
Dougie Posted December 21, 2020 Report Share Posted December 21, 2020 Just found this thread after posting one on rocker arms - I had one break.. is that unheard of or not? Would you expect them to have bushes? Mine doesn’t seem to? Link to comment Share on other sites More sharing options...
Pete Lewis Posted December 21, 2020 Report Share Posted December 21, 2020 just bear in mind the std system has only lasted 50 years yes its a wear zone a lot of work done in rockers and rubbing faces but theres little advantage other than cost in going silly for a std road going car Pete Link to comment Share on other sites More sharing options...
ed.h Posted December 21, 2020 Report Share Posted December 21, 2020 Not sure why honing should be necessary. Reaming to size is easier and quicker, and can easily provide the necessary size accuracy and precision. Ed Link to comment Share on other sites More sharing options...
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