Brian Jackett Posted September 4, 2001 Share Posted September 4, 2001 I attended a track day and was advised to overfill the oil to allow the oil pump to not run dry when hard cornering. I did this and half way through the day and engine Oil started to leak between the auto box and engine. I assume it came out of the back of the engine. This did this for a while after the track day but slowly stopped leaking and now if I thrash it down a motor way and do some hard driving it does not leak the oil level is now 1 mm above full before it was 7mm above. Has anyone experienced this or have any advise. regards Brian Quote Link to comment Share on other sites More sharing options...
Flipfinger Posted September 4, 2001 Share Posted September 4, 2001 Oooh, I bet they loved you on the track, spilling oil out everywhere! Quote Link to comment Share on other sites More sharing options...
Branners Posted September 4, 2001 Share Posted September 4, 2001 The supra tends to catch most of the oil on the sump guard, mine stored up a good 3l when I blew the front crank oil seal at Bentwaters. Im just glad I blew the front crank oil seal and not the rear one cos that means engine oot. JB Quote Link to comment Share on other sites More sharing options...
Guest Ash Posted September 4, 2001 Share Posted September 4, 2001 Whoever advised you to do that was a tad mistaken. Remember that the MKIV is not some souped up Cortina. It was designed as a high performance car from the outset. The sump design already includes an internal splash-guard that prevents the oil suddenly sloshing away from the pick-up. Yours, J Quote Link to comment Share on other sites More sharing options...
Guest Martin F Posted September 4, 2001 Share Posted September 4, 2001 And just to add to this thread of MKIV trivia............. The petrol tank also includes an internal baffle (careful!!) to stop fuel starvation when cornering hard. Next question....... What is the internal diameter of the radiator hoses ?? Quote Link to comment Share on other sites More sharing options...
Guest Ash Posted September 4, 2001 Share Posted September 4, 2001 Internal diameter of the top and bottom hose is 33 mm. Yours, J Quote Link to comment Share on other sites More sharing options...
Guest Martin F Posted September 4, 2001 Share Posted September 4, 2001 Man that was so quick, i couldn't even refresh in time. :biggrin: Thanks Ash. Now where's that Goodridge catalogue...... Quote Link to comment Share on other sites More sharing options...
Guest Ash Posted September 4, 2001 Share Posted September 4, 2001 The MKIV impossible I can do all at once. The miracles take a little longer, however. Yours, J Quote Link to comment Share on other sites More sharing options...
Paul Booth Posted September 4, 2001 Share Posted September 4, 2001 Quote: from Brian Jackett on 1:41 pm on Sep. 4, 2001[br]I attended a track day and was advised to overfill the oil to allow the oil pump to not run dry when hard cornering. Well................. nope, I'm speechless. Quote Link to comment Share on other sites More sharing options...
Branners Posted September 5, 2001 Share Posted September 5, 2001 its a recommendation that Chris Wilson makes which is why its a common held belief. JB Quote Link to comment Share on other sites More sharing options...
Paul Booth Posted September 5, 2001 Share Posted September 5, 2001 Does Chris sell high performance crank seals, by any chance? Quote Link to comment Share on other sites More sharing options...
Branners Posted September 5, 2001 Share Posted September 5, 2001 he sells everything, but he also track runs most of his cars, which included a mkiv with BPU mods, and when I say 'track run' I mean he really pushes them to the limit, he is as fast as most motorbikes on the Dono circuit in his Skyline. Quote Link to comment Share on other sites More sharing options...
Paul Booth Posted September 5, 2001 Share Posted September 5, 2001 Whoopeee. It's still dangerous telling people to overfill their sump. It doesn't matter that you tell them to overfill it by 250ml, by the time it gets on to the 3rd person, it's become 2.5l and everyone's blowing crank seals. Quote Link to comment Share on other sites More sharing options...
Guest Ash Posted September 5, 2001 Share Posted September 5, 2001 The MKIV oil pan is designed so that at the FULL mark the oil-pan is virtually full to the brim. For this reason, the oil cannot possibly slosh around in the pan. Just above the level of oil, plate that covers a large proportion of the surface area of oil. This plate further resists oil movement. However, it *is* very good advice to check your oil-level prior to a track session and to make absolutely sure it is at the FULL marker. If anything I, personally, would top it up so the oil-level is a fraction over rather than under. I think that is the gist of what Chris is saying. What I suspect is maybe Brian overdid it a tad. And if the car was not on perfectly level ground, when he was checking the level, that may have thrown things out too. Yours, J Quote Link to comment Share on other sites More sharing options...
Branners Posted September 5, 2001 Share Posted September 5, 2001 that might explain why mine blew the front crank oil seal then. I have a different dipstick in mine and it seems to take and extra 0.5l to fill to the max point on the dip stick and I had the oil changed a week before I went on the Bentwaters track day. I will remember to check and double check the levels next time. JB Quote Link to comment Share on other sites More sharing options...
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