Triumph Dolomite and Sprint Rocker Feed Kit - 1500/1300

[olr159w]

I saw this referred to in an article.

http://www.rimmerbros.co.uk/Item--i-GRID008569

I didn't know it existed; just curious, what does everyone think of this

[cliftyhanger]

Been around for donkeys years.
Firstly, an explanation of how the rockers are normally oiled. A little bit of oil is pushed up the oilway (via the cam)in the head at relatively lowish pressure, and in pulses. Should be enough to keep all the rockers and shaft fed.

These kits leave that oilway in place and also add a high pressure feed from the mail oilway in the block (takeoff is T where the oil pressure switch is) and allow a huge oilfeed under high pressure to the rockers. Seems useful.

However, it usually results in far too much oil to the rockers, and can result in massively increased oil consumption. I know of one fresh reconditioned engine ( very high spec) tat came with one attached, but burnt oil. Chap removed the feed, and all is well.
Next, that oil supply is taking oil from the crankshaft and bearings. Not clever especially on a 1500.

The feed cam be made to work properly, but to do so requires the oilway in the head to be blanked off, and it needs a restrictor on the hose so that you don't get a massive oversupply of oil.

Others seem to like them as they can quieten the rockers down, but I wouldn't touch one with a very long bargepole.

BTW, only suitable for the OHV engine, certainly not sprint or 1850....

[olr159w]

Interesting thanks. And it says Sprint on the RB site as well......

[grahamwatson]

Interesting thanks. And it says Sprint on the RB site as well......

RB use Triumph Dolomite and Sprint to refer to the whole Dolomite Range (as opposed to the 2000 range, for example) but it does not mean everything under that heading fits all models in the range, which can be confusing. They do usually indicate which models the part is for in the product description - in this case there is a reference to the pushrod engines, and they also warn of the risk of increased oil consumption.

[olr159w]

Thanks. Explains why I never heard of it. Dumb presentation by RB .

rgds

[Jod Clark]

The extra oil consumption is easily fixed using stem seals from some other engine, can't remember which but someone here will know. Easily fitted using the rope trick (or compressed air, my preferred method).

If your bottom end is adversely affected by the small decrease in maximum oil flow / pressure then its probably goosed anyway and you'd be better fixing that first.