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Re: Roller Rockers - source

To: triumphs@autox.team.net
Subject: Re: Roller Rockers - source
From: Egil Kvaleberg <egilk@sn.no>
Date: Thu, 24 Oct 1996 07:25:16 +0200 (MET DST)
On Wed, 23 Oct 1996, you wrote:

> Richard Good of Good Parts has aluminum roller rockers for
> the TR6 in 1.55 and 1.65 to 1 ratios (stock 1.46).  They fit
> on the stock TR6 shaft.  $499 list for the TR6, seems he sells
> TR4 as well, I suspect they are the same!

Triumphttune of UK also sells roller rockers, perhaps they are the same?
They are 1.65 ratio, I'm not sure if the shaft and pedestals are stock. 

Does anyone have any experience with roller rockers?

I am considering them as an alternative to a higher lift cam (I am
currently running a TR5-cam), and I am imagining that roller rockers would
give less loads on the valve train compared to a standard setup for a
given lift. 

Cam bearings may wear in a major way when a high lift cam and strong valve
springs are fitted (and a TR5 PI-cam is considered high-lift). This can be
a source of oil pressure problems. It seems the centre bearings might be
more prone to wear than the wider end bearings. The only cure is to line
bore and fit Spritfire 1500 type bearing shells. 

> He is in PA, I have a number somewhere,

Found it?

Egil
-- 
Email: egilk@sn.no  Voice: +47 22523641, 92022780 Fax: +47 22525899
Snail: Egil Kvaleberg, Husebybakken 14A, 0379 Oslo, Norway
URL:   http://home.sn.no/home/egilk/


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