thought this might be of interest..

yella terra group buy

$800 AUD, dunno if that is a good price or not?

They've been selling for $500.00 on ebay.

Actually I think that might have been $600 delivered. Will try to find the ad.

EDIT:Okay, it's about AUD$550.00 delivered.

Go for your life, I personally don't think they bring that much benefit as I wonder about the additional weight that they carry, so I'd be hesitant on paying $550.00. Nice equipment though. Perhaps they are just a longevity thing? I prefer the JBracing ones, or even just bushed stock ones.

i was gonna say i saw them on ebay for like 500

OK..

Looks like they are trying to get a bit of a mark up on there..

Reckon the JB's are better value, not a huge fan of rollers in a reciprocating installation.

Yeah ebay dude has had excess stock for years, he's just ridding some unwanted and old stock. I think they used to sell for about $1000.00 (excluding the pushrods) so either deal you go it might be better priced.

Might be worth telling our kiwi mates? Not sure, don't really want to interfere with Yella Terra business.

the stockys do the job pretty well with good springs and
you best spend the money on titanium valves instead
which will be cheaper, not to mention halve the weight.

I would agree, I installed a set on my rally car and was getting terrible valve float at 7500rpm with good Jeff Taylor valve springs went back to standard rockers and it revs back to 8100rpm no problems.

not only are the rockers 20% heaver than standard allot of the extra weight is on the tip (roller) which increases the momentum.

I think I will just keep my set for the trophy shelf as they do look good.

if only all the stuff that looked good worked as well as it looked..

Hollow stem titanium valves with beehive (ford 4.6 quad cam v8) valve springs.

More weight = bigger springs, more stress on subsequent parts.

More weight + bigger, heavier valves + bigger springs = More + More + more stress on rocker shaft, rocker bolt threads, cam lobes, tappets etc etc.

Having said that I can't say I've ever run these. And I haven't heard of any catastrophic failures as a result of people running them.

If they reduce the rev limit and save the wear on the valve stems and generally promote longevity then I might buy a set for my stock A15 (when I have money )