Tim D. Posted January 27, 2020 Report Share Posted January 27, 2020 Hi All, Recently bought a very original 2500 TC saloon. The car runs the original oil filter set and I was interested to see how long it takes for the oil light to go ours when first starting (much longer than my TR6). Interestingly you also hear 3 knocks from the engine which cease when the oil pressure builds. Otherwise it all seems very good. Now, on saturday I started my TR6 for the first time in a few months. This has a recently rebuilt engine (approx 10K miles on it) and the spin on filter attachment. Fired right up with very little starter but then heard 2 knocks. Perhaps I am more sensitive because of the saloon. Car runs great oil pressure (40-50 psi at hot idle 80+psi over 2000 rpm). Could this just be a case of the oil system draining down after 2 months inactivity? Should I be worried? Tim Quote Link to post Share on other sites
harlequin Posted January 27, 2020 Report Share Posted January 27, 2020 Tim If it's big ends that you are worried about, remove plug lead No.6 and start up. If the knock is gone it's No.6 big end, if you still have the knock remove plug lead No.5 and so on. George Quote Link to post Share on other sites
Tim D. Posted January 27, 2020 Author Report Share Posted January 27, 2020 Trouble is it only happens on startup after a long lay up Tim Quote Link to post Share on other sites
RogerH Posted January 27, 2020 Report Share Posted January 27, 2020 Hi Tim, don't have long lay-ups Roger Quote Link to post Share on other sites
Tim D. Posted January 27, 2020 Author Report Share Posted January 27, 2020 Very true! Quote Link to post Share on other sites
astontr6 Posted January 27, 2020 Report Share Posted January 27, 2020 1 hour ago, Tim D. said: Hi All, Recently bought a very original 2500 TC saloon. The car runs the original oil filter set and I was interested to see how long it takes for the oil light to go ours when first starting (much longer than my TR6). Interestingly you also hear 3 knocks from the engine which cease when the oil pressure builds. Otherwise it all seems very good. Now, on saturday I started my TR6 for the first time in a few months. This has a recently rebuilt engine (approx 10K miles on it) and the spin on filter attachment. Fired right up with very little starter but then heard 2 knocks. Perhaps I am more sensitive because of the saloon. Car runs great oil pressure (40-50 psi at hot idle 80+psi over 2000 rpm). Could this just be a case of the oil system draining down after 2 months inactivity? Should I be worried? Tim Hi Tim, My TR has had an oil cooler fitted from new but it has also a non return valve fitted in one of the flexible pipes, known as a flapper valve along with the spin on adaptor/filter. I have never had any knocking on start up! Even with the engine not started for months? You can get drain down from the oil pump, is this your problem? Bruce. Quote Link to post Share on other sites
Tim D. Posted January 27, 2020 Author Report Share Posted January 27, 2020 Also have an oil filter. Suspect it could be pump drain down. The oil pressure comes up pretty rapidly.. Tim Quote Link to post Share on other sites
Rob Salisbury Posted January 27, 2020 Report Share Posted January 27, 2020 After the long lay-up crank the engine with the ignition disconnected until you get some oil pressure, then it should be good to go. Cheers Rob Quote Link to post Share on other sites
Mike C Posted January 27, 2020 Report Share Posted January 27, 2020 5 hours ago, Tim D. said: Also have an oil filter. Suspect it could be pump drain down. The oil pressure comes up pretty rapidly.. Tim If you're using spin on filters, make sure the filter you selected is fitted with an anti drain valve. Quote Link to post Share on other sites
Tim D. Posted January 27, 2020 Author Report Share Posted January 27, 2020 How do you tell? tim Quote Link to post Share on other sites
Mike C Posted January 27, 2020 Report Share Posted January 27, 2020 You need to check the manufacturer's data sheets or check with other user's. When I first fitted a spin adapter I only considered the attachment thread and filter sealing ring diameter- big mistake. There's more to it than that: https://ryco.blob.core.windows.net/ryco/Files/library/news/oil_filter_valves_technical_tips.pdf In the end I settled on a Ryco Z37 which is commonly used by Australian Triumph enthusiasts - it has an anti syphon valve and internal pressure relief. Quote Link to post Share on other sites
harrytr5 Posted January 28, 2020 Report Share Posted January 28, 2020 Anti drain valve is for inverted filters our spin on filters hang down so should always have oil in there surely. I am not counting the original oil filter for TR5/6 as that of course is horizontal and does drain back. Regards Harry TR5 Nutter Quote Link to post Share on other sites
Waldi Posted January 28, 2020 Report Share Posted January 28, 2020 This valve prevents oil draining back from the gallery due to its elevated location. Waldi Quote Link to post Share on other sites
DRD Posted January 28, 2020 Report Share Posted January 28, 2020 13 hours ago, Mike C said: If you're using spin on filters, make sure the filter you selected is fitted with an anti drain valve. I thought the anti-drain valve was fairly standard on modern spin-on oil filters. I tend to use the Mann ones (W712) which have this. Quote Link to post Share on other sites
Mike C Posted January 28, 2020 Report Share Posted January 28, 2020 14 minutes ago, DRD said: I thought the anti-drain valve was fairly standard on modern spin-on oil filters. I tend to use the Mann ones (W712) which have this. It wasn't 10 years or so ago, I used a widely available filter for Nissan commercial vehicles that lacked the drain back valve -it fitted the Mocal adapter with no obvious problems. The easiest way to make sure is see what filters work for other TR enthusiasts- you can't take the filter internal valving for granted. Quote Link to post Share on other sites
Waldi Posted January 28, 2020 Report Share Posted January 28, 2020 I have the filter adapter and installed a large K&N filter, type HP-2009, which has an anti-drain valve, see picture of the box. The price difference between a good filter and a cheap filter is too little to even consider el-cheapo’s. Waldi Quote Link to post Share on other sites
ntc Posted January 28, 2020 Report Share Posted January 28, 2020 If the oil light does not go strait off with spin on filter then you have bearing wear or pump is not within tolerance. Quote Link to post Share on other sites
Tim D. Posted January 28, 2020 Author Report Share Posted January 28, 2020 Pressure comes up almost immediately. Way fast than the 2500 saloon I have with the old style filter. pump was blue printed recently so all good. Just wondering how the oil cooler might drain back when left for a while.. pipes are above the sump level. Tim Quote Link to post Share on other sites
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