Discussion in 'Turbo Trans Am Tech' started by 89ICBM, Feb 22, 2007.
Just thought I'd show off my rocker set up.
Hey Frank, what brand rockers are those? Did you use beehive springs?
Jan put on your glasses ... So Frank when is it goin to be done ??? hey my Stage 2 TTA is DONE !!!!! startin to piece it out when the header guy is done with it :biggrin:
The lash caps are in the second pic, they are underneath the roller on the rocker. They're just a small cap that fit over the valve stem. I'm not fimiliar with bee hive springs so I don't know what their pressures are but I can tell you the roller cam I have has a recommended sring open pressure of 350 #'s. You need to find out what your cam requires and what your srings are. The push rod guides are used to hold the push rod in place. Roller rockers sit higher so there is more push rod exposed this can allow the rod to become unstable and come out from underneath the rocker, the guides prevent this. I'll check for a pic here, if I don't have one here I probably have one at work,
Jan, just so you know the Harland Sharp roller rockers are set up so they dont require lash caps or guide plates(in case you were wondering if you needed them).
Thanks Steve, got nervous I was missing something but then I'm all set.
Thanks Frank for the explanation, did learn something (again).
Beerman Franks' Roller Rockers
Good show, Frankie Boy. We'll be getting together to do mine someday !
I'm now thinking of a TA Alum block and wondering how if it's OK to bolt Iron Heads to an Aluminum Block ?
I worked with Randy at Harland Sharp to develop these rockers. They are designed to be stock replacement with minimal modifications. I sent him a TTA head and some rocker arms for him to work with, then ran them on my GTA for over a year, with a 214/210 billet roller and K motion K-750 springs, before posting them on this board. The Harland Sharp rockers require about a .150" shorter pushrod(than if running stock rockers), removal of the baffle in the drivers side valve cover, and machining the stock hold down bolts(by either sending them in to Harland Sharp or by machining to their specs). Here's a few pictures:
Installed on my GTA:
All the parts that make up a pair of rockers including a modified bolt:
Package as delivered from Harland Sharp:
Your setup looks very nice Frank and I was not trying to knock it in any way, I was just letting Jan know that he doesnt need those items(guideplates and lash caps)for the Harland Sharp setup.
I'm using the Harland Sharpe rockers on my stage II build. Meaning 4.1 off-center with TTA heads. Were using the GN1 valves which are .100 longer than stock valve which gave me a wider variety of spring choices. Valves were machined to size by Champion. Spring pressure will be around 145 pounds on the seat and around 385 when open. Planning on making her see 7000 rpms. We have all ready did the mock-up on rockers and valves and the geometry was fine with no spacers under 1.6 harland rockers. I,m using a comp cam 218 218 custom roller cam from Dan Strezo. There is absolutely nothing cheap or wrong with these rockers when used in combination with a roller cam set-up. Thanks TTA 850 for your effort with these rockers and the other thing your doing as we speak.
I will be running a Comp Cam Xtreme 206/210 with Comps roller lifters and beehive springs, this was bought as a package from Full Throttle and can be run with or without roller rockers I was told. So the Harland Sharp roller setup will work fine with this I expect like Steve says above. I will use the stock valves etc.
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