DiscoDave Posted October 28, 2017 Share Posted October 28, 2017 Hi chaps. Wondering if anyone has come across this situation I’m having. My Manta A with C20LET is sometimes burning oil. It does it as the car comes to a stop, like at a set of traffic lights, durning normal driving conditions, and at full running temp. Ok when cold. If I come to a stop smothly and gradually it won’t burn any oil, but if I stop normally or abruptly a big puff of white/blue smoke comes out the exhaust for a couple of seconds, then it goes away. Any thoughts? Quote Link to comment Share on other sites More sharing options...
mantaray Posted October 28, 2017 Share Posted October 28, 2017 Don't know about the C20LET, but it sounds like valve stem seals. Quote Link to comment Share on other sites More sharing options...
DiscoDave Posted October 28, 2017 Author Share Posted October 28, 2017 That’s my thoughts too. The oil must be sloshing around the rockers area. I’ve never stripped a red top head, I’m sure it’s like any other head. Quote Link to comment Share on other sites More sharing options...
399 road Posted October 29, 2017 Share Posted October 29, 2017 There's a baffle mod listed on SBD's website for inside the rocker cover. Check to see if this has been done. If it hasn't, you sometimes get that puff of smoke as oil runs into the inlet. Quote Link to comment Share on other sites More sharing options...
DiscoDave Posted October 30, 2017 Author Share Posted October 30, 2017 13 hours ago, 399 road said: There's a baffle mod listed on SBD's website for inside the rocker cover. Check to see if this has been done. If it hasn't, you sometimes get that puff of smoke as oil runs into the inlet. Interesting. That makes sense. But I’m surprised it needs baffles for normal road driving. I can understand for the track. I’ll check it out. Cheers for that. Quote Link to comment Share on other sites More sharing options...
DiscoDave Posted December 30, 2018 Author Share Posted December 30, 2018 Hi chaps, I’m going for it! Replacing the Valve Stem Oil Seals, hopefully it should fix my problem. But, do you think it’s worth doing the Piston Rings while I have the head off anyway? Dave Quote Link to comment Share on other sites More sharing options...
Paul Barrett Posted December 30, 2018 Share Posted December 30, 2018 Just try the stem seals first. Remove the rocker cover and make sure it’s not blocked up. The breather mod is an easy worth while thing to do on any xe/let. Quote Link to comment Share on other sites More sharing options...
DiscoDave Posted December 30, 2018 Author Share Posted December 30, 2018 Thanks Paul. The Breather Mod, is that the fitting of a Baffle? Quote Link to comment Share on other sites More sharing options...
Paul Barrett Posted December 30, 2018 Share Posted December 30, 2018 It’s removing the baffle and cutting it down to allow better breathing Quote Link to comment Share on other sites More sharing options...
DiscoDave Posted December 30, 2018 Author Share Posted December 30, 2018 Ah yes, I know the one. Just checked it, the baffle plate is still present and complete. I’ll be sure to do it. Just so I understand, the oil runs along the baffle and ends up getting into the small pair of breather pipes and subsequently into the manifold? Quote Link to comment Share on other sites More sharing options...
Paul Barrett Posted December 30, 2018 Share Posted December 30, 2018 Yes, block off the small one both ends anyway. then the larger one run to a catch tank rather than recycling it. Quote Link to comment Share on other sites More sharing options...
DiscoDave Posted December 30, 2018 Author Share Posted December 30, 2018 9 hours ago, Paul Barrett said: Yes, block off the small one both ends anyway. then the larger one run to a catch tank rather than recycling it. Ah yes, I know the one. Just checked it, the baffle plate is still present and complete. I’ll be sure to do it. Just so I understand, the oil runs along the baffle and ends up getting into the small pair of breather pipes and subsequently into Quote Link to comment Share on other sites More sharing options...
DiscoDave Posted December 30, 2018 Author Share Posted December 30, 2018 Thanks very much. I’ll be sure to do that. I started to take down the head, and found something interesting. Following removal of the rocker cover I noticed number one inlet valve stem oil seal (the only one on inlet that’s visible at this point) looked like it was sitting high. I managed to get a thin screw drive in (only just) and managed to rotate the seal freely. Pardon my slight ignorance to the xe/let, I am a tech, but I’m only just gaining experience with this engine after purchasing my Manta A 4 years ago with it already installed. I wouldn’t of thought the seal should rotate so easily. Anyway, I’ll have the head off in a few days, between doing everything else.... (working through my wife’s To-Do list). If it’s a popped off oil seal, it’ll explain a lot. Thanks again. Dave Quote Link to comment Share on other sites More sharing options...
Paul Barrett Posted December 31, 2018 Share Posted December 31, 2018 (edited) Ah yeah well that’ll be your cause then. id replace the lot if you are having the head off. May as well Re lap the valves too. Also so noticed your not a member. Get your hand in your pocket and become a member of the club and Get a project thread up Dave. Edited December 31, 2018 by Paul Barrett Quote Link to comment Share on other sites More sharing options...
DiscoDave Posted January 10, 2019 Author Share Posted January 10, 2019 I’ll Do that! Thanks for all your advice. Just renewed my membership. Can’t believe it expired in 2017! Thanks again Dave Quote Link to comment Share on other sites More sharing options...
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