had17462 Posted January 26 Report Share Posted January 26 Hi all still finding bits to build up the chassis etc come across this feed pipe are they worth fitting 6 cylinder ,also what’s this copper pipe for please let me know if you know regards Nick Quote Link to post Share on other sites
trchris Posted January 26 Report Share Posted January 26 Hi Nick It’s been mentioned that fitting a rocker feed pipe lowers the oil pressure to the bottom end of the engine l removed mine when l had the 4a after engine build as l also believe this to be the case ,l haven’t one on the 6 cylinder and won’t fit one.. The copper pipe looks like it’s from a 4 pot engine Chris Quote Link to post Share on other sites
BlueTR3A-5EKT Posted January 26 Report Share Posted January 26 Copper rigid pipe left of the image is the oil pressure gauge delivery for a TR2-4A. Not fitted to a 6 cylinder TR. ptno. 200646. Here. https://www.moss-europe.co.uk/en-gb/oil-system-tr2-4a-1953-67-tr24--17--06--01 Quote Link to post Share on other sites
had17462 Posted January 26 Author Report Share Posted January 26 Thanks again guys Nick Quote Link to post Share on other sites
stuart Posted January 26 Report Share Posted January 26 Don’t fit the head feed pipe unless the banjo bolt is reduced to 1mm aperture or your causing more problems than it would ever solve, just leave it on the shelf Stuart. Quote Link to post Share on other sites
Richard B 2.5PI Posted January 27 Report Share Posted January 27 Only fit if you have blocked off the oil feed from the block. Quote Link to post Share on other sites
stuart Posted January 27 Report Share Posted January 27 30 minutes ago, Richard B 2.5PI said: Only fit if you have blocked off the oil feed from the block. Why would you do that? Stuart. Quote Link to post Share on other sites
Andy Moltu Posted January 27 Report Share Posted January 27 The one on the left is part of the pipework that supplies the oil pressure gauge on the 4 pot engines. The one on the right is an after market oil feed pipe to the rockers. Get a lot of bad press because they have the potential to pour lots of oil to the top end resulting in high oil consumption if any wear in the valve guides and potentially dropping oil pressure and starving the bottom end. Restricting the banjo bolt to 1-1.5 mm by filling with a dob of braze and drilling to size does the trick. But is it necessary - some engine builders believe the extra oil to the rockers dribbles down aiding cam longevity. But it may be be that it was a "solution" to the problem of poor quality reprofiled camshafts when new blanks were out of supply and the reduced base circle that resulted in premature wear. Did it help? Quote Link to post Share on other sites
Andy Moltu Posted January 27 Report Share Posted January 27 7 minutes ago, stuart said: Why would you do that? Stuart. Blocked with gunge, head gasket with missing or misaligned oil feed hole? Quote Link to post Share on other sites
stuart Posted January 27 Report Share Posted January 27 12 minutes ago, Andy Moltu said: Blocked with gunge, head gasket with missing or misaligned oil feed hole? Poster seemed to imply doing it deliberately. Stuart. Quote Link to post Share on other sites
Richard B 2.5PI Posted January 28 Report Share Posted January 28 Personally I would never fit one; as they are "spawn of the devil". However I know someone who removed theirs from a 6'pot and then found that there was no oil coming up from the block as the OE feed had been closed. I don't know why, but the previous quote about poor quality cams makes sense. I agree with the earlier posts that fitting one without changes to the system, results in excessive oil supply to the head. Quote Link to post Share on other sites
Tom Fremont Posted January 28 Report Share Posted January 28 I recommend them, have done over 140K miles on my CP spec driver on Webers, no valve guide wear nor change in oil consumption in that time unless slightly lower now at 1 US qt per 3000-4000 miles depending on type of driving ( X-country loafing -> lower consumption ), oil pressure 65 psi@ 2000 rpm when hot in summer. Rocker arms are bronze bushed and shaft is hard chrome plated. The engine just won't wear out... My engine builder likes them too. He's done everything from Offenhauser to Packard Indy car engines, has a Bonneville racer 325+ MPH he built, dirt racer too and ultra precision machinist to boot. You do have to ensure the banjo fitting is tight against the head seat, may require (2) copper washers to prevent the bolt from bottoming. Quote Link to post Share on other sites
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