Phil Horsley Posted December 29, 2019 Report Share Posted December 29, 2019 Hi Everyone & Merry Christmas, I am in the process of rebuilding my 3.5L V8 in my Grinnall Body style 2, it's been a long saga which you will have read in my reports in the TR Action. I was installing some new rockers and rocker shafts and found more what appear to be broken plastic 'cups' approx. 3/4" across when together, I have found these bits in the rocker compartment near the oil exit ports on both extremities of both heads, I would estimate to make up about 8 complete now. Maybe they are valve stem seals off the inlets although I don't think this engine didn't have them? I'm concerned that bits of these may be the clogging up the oil ways and lead to the original problem of the distributor cog grinding away? Any ideas anyone please? Happy New Year to you all Quote Link to post Share on other sites
Chilliman Posted December 29, 2019 Report Share Posted December 29, 2019 No experience of those engines Phil but I would have thought you are right about them being valve stem seals..maybe an aftermarket product? Certainly not going to be doing any beneficial in the oil system... Quote Link to post Share on other sites
iain Posted December 30, 2019 Report Share Posted December 30, 2019 They do look rather like these.........which are valve stem oil seals for that engine Quote Link to post Share on other sites
Phil Horsley Posted December 30, 2019 Author Report Share Posted December 30, 2019 Thanks Guys, Interesting how they have hardened into cup shapes, probably heat, certainly the engine hasn't had any significant smoking problems so I don't think they will need replacing? My main issue is oil pump, the oil is coming through but really gurgling like when you first use a hose pipe, I'd have thought it should be more constant? I've put some wire down the feed ports to the rockers and blown through with a air line but it remains the same, maybe that's how it should be, oil pressure has always been good on the engine, so it's all a bit weird here's a video: Any further thoughts welcomed. Quote Link to post Share on other sites
Chilliman Posted December 30, 2019 Report Share Posted December 30, 2019 Is that not just because of the slow rpm of your drill? Between each revolution and pumping action there is enough time for that top oilway to empty of oil & fill with air...it doesn't have the classic hallmarks of a failed oil pump. Quote Link to post Share on other sites
Phil Horsley Posted February 15, 2020 Author Report Share Posted February 15, 2020 Thanks John very reassuring, also I have been told when the rocker bar is back in place, the pressure and flow will also improve? Quote Link to post Share on other sites
Motorsport Mickey Posted February 15, 2020 Report Share Posted February 15, 2020 Phil, "oil pressure has always been good on the engine" what oil pressure would that be then ? Mick Richards, Quote Link to post Share on other sites
Waldi Posted February 29, 2020 Report Share Posted February 29, 2020 Looking at the film I see entrapped air bubbles. If it remains like this even after a minute or so, when all air should be purged out, I could well be that the suction side has a ( small) air leak. When I tested mine (on a TR6) it gave a steady flow. Thick cold oil and a low level could also do this. Waldi Quote Link to post Share on other sites
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