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Triumph TR6 - SLIDE ON ROLLER ROCKERS

Anyone tried these ?? They look interesting
Charlie

http://cgi.ebay.ca/Triumph-TR6-GT6-TR-250-Roller-Rocker-Set-Free-S-H-TR-6_W0QQitemZ250174050944QQihZ015QQcategoryZ10076QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
Charlie B.

They look like the same ones that Ted Schumacher sells and if so, I have a set. Here is my take on them. I found set up to be a bit fiddly, but then I was running solid spacers and had to shim to ensure good alignment of the roller and the valve end. Also had to do some machine work on the rockers at positions 1 and 12 as they fouled the rocker shaft pedestals.

Do note that some aluminum valve covers will foul roller rockers. Mine did, so it was off the car and onto the mill for a little machine work and then flush plugs welded in to replace the recessed bosses that had been machined away. Other than that so far, so good. If you have baffled an aluminum cover, you may have to redo the baffle too as the rockers are much wider than the steel units and could foul the baffle.

Having said that, if they had been available at the time, I would have coughed up the extra brass and got a set from Richard Good. His are pretty much a no fuss, no muss install. No need to take all the shaft pedestals off and reassemble/shim/other tedious stuff. If nothing else, they are pretty a work of art. I still bet that I would have had to do the valve cover and baffle though.
Steve Pike

Charlie,
I've been running a set similar to those on my MGB for over 17k miles (daily driver status). A couple of things to keep in mind:
Always replace the rocker shaft. Otherwise you'll be replacing the bushings and shaft shortly afterwards. Don't stay with the spacing springs, fit the spacer bushings instead. The springs will start to wear circular grooves in the sides of the rocker arms. Don't ask me how I know! The bronze bushing is good, the needle rollers that some come with won't last that long on the street since needle bearings like to rotate, not oscillate.

They can be a bit fiddly at first to adjust. You have to get the 'feel' for them. I slide the feeler gauge side to side vs. pulling / pushing in and out. Be aware that the roller tip may not be concentric on its axle. Some of mine are off a little - maybe as much as .002". Once set they hold their adjustment for a long time. They do put less side to side pressure on the valve stem so the valves and guides should last longer.

Sorry, can't tell you who supplied mine. They came on a car I acquired and there was no documentation with them, but they were new.

HTH,
Tom
Tom Sotomayor

This thread was discussed on 17/10/2007

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