WelshLamb Posted January 19, 2012 Report Share Posted January 19, 2012 What are these ports for? (Circled in red) I'm guessing fuel intakes? The engine runs and idles nicely, but when given a sharp rev it stutters slightly. So I'm hazarding a guess its some sort of extra squirt of petrol Quote Link to comment Share on other sites More sharing options...
Dr_evil Posted January 19, 2012 Report Share Posted January 19, 2012 From the looks of the plumbing on my old engine they appear to be going to a secondary fuel pump Quote Link to comment Share on other sites More sharing options...
Gordon R Posted January 19, 2012 Report Share Posted January 19, 2012 Years since I worked on SU carbs - not a balance pipe between the two carbs is it? Are the dashpots (unscrew caps and fill to level)properly filled with oil? Quote Link to comment Share on other sites More sharing options...
Dr_evil Posted January 19, 2012 Report Share Posted January 19, 2012 I was wrong, just checked my parts book Quote Link to comment Share on other sites More sharing options...
WelshLamb Posted January 19, 2012 Author Report Share Posted January 19, 2012 A quick bit of googling, and I'm now educated (a little) on dash pots, and carb oil! :blink: Never even knew such a thing existed! She's stuttering a bit, because the pots are empty. I unscrewed them weeks ago, pulled the rod thing out, didnt have a clue what it was for and screwed them back in , so will top those up tomorrow The two little pipes in my pic are fuel returns are "float chamber vent pipes" :blink: ...the float chamber vent pipes must each be fitted with a hose which is then brought forward and down to hang beneath the engine in clear air. Fuel vapours will exit via these hoses, and should a float fail and sink resulting in an overflow, the fuel is then dumped onto the road and away from the hot engine where a fire might otherwise result. Every day is a school day! :yp: Quote Link to comment Share on other sites More sharing options...
Dr_evil Posted January 19, 2012 Report Share Posted January 19, 2012 haha whats the ETA on this project then Looks like the engines sitting in the bay now Quote Link to comment Share on other sites More sharing options...
WelshLamb Posted January 19, 2012 Author Report Share Posted January 19, 2012 She's up and running everything is in place, exhaust is on etc (see rebuild thread) Just needs the wings back on and an MOT, then she's good to go! Quote Link to comment Share on other sites More sharing options...
Dr_evil Posted January 19, 2012 Report Share Posted January 19, 2012 (edited) You should do vertical truck stack exhausts ! I was gonna do them on my 109 http://s1086.photobucket.com/albums/j448/Chaotic_Crayfish/?action=view¤t=22082011013.mp4 Click for vid Edited January 19, 2012 by Dr_evil Quote Link to comment Share on other sites More sharing options...
WelshLamb Posted January 19, 2012 Author Report Share Posted January 19, 2012 Flippin 'eck! :lol: I was going to put the exhaust straight through with no silencer boxes on it, but with the amount of offroad kit on it, and special trax, decided it would be noticed by the fuzz possibly a little toooo much!! So have opted for just the one silencer Quote Link to comment Share on other sites More sharing options...
Dr_evil Posted January 20, 2012 Report Share Posted January 20, 2012 haha mine was just a straight through pipe onto a splitter then two stacks Wasn't exactly conspicuous after I'd finished with him, massive dents everywhere, looked like it'd been rolled on its roof and well…..an idiot behind the wheel using the lowest gear possible and revving it Flowmaster silencers are great! I've got one off the V8, bought new never fitted so gonna shove it on the disco along with the stacks using them as twin side exits The rover V8's with a Flowmaster 40 series sound amazing http://www.youtube.com/watch?v=TyoXMqIASUQ Quote Link to comment Share on other sites More sharing options...
Cosd Posted January 20, 2012 Report Share Posted January 20, 2012 If you ever need any info on engines a good mate of mine works for Burton car racing and is pretty knowledgable. Feel free to pme with questions and I'll ask him for you or put you in touch. Cos Quote Link to comment Share on other sites More sharing options...
88b Posted January 20, 2012 Report Share Posted January 20, 2012 Before you top up the dash pots with oil remove the piston covers ( the part the black plastic cover is screwed into ) and clean the inside. T cut works well. Remove the four screws holding the cover on , one in the pictue has an alloy tab on it, polish the inside and the piston, reassemble and top up the dash pots. 3 in 1 oil is good and allows the pistons to rise a little faster especially in cold weather. Quote Link to comment Share on other sites More sharing options...
WelshLamb Posted January 20, 2012 Author Report Share Posted January 20, 2012 Sounds like good advice there! I'll do that could I use carb cleaner in there?? I don't think I own any t cut!! Quote Link to comment Share on other sites More sharing options...
Mattw Posted January 20, 2012 Report Share Posted January 20, 2012 just wipe it over with a clea but oily rag. I wouldnt use carb cleaner incase if damages the rubber. If the rubber is perished / split / cracked it needs to be changed.... they are only a couple of quid each. I have heard a heavy oil is bettter than a light one for this. There is huge amounts of info on the MEZ website... Matt. Quote Link to comment Share on other sites More sharing options...
Gordon R Posted January 20, 2012 Report Share Posted January 20, 2012 Heavier oil in summer - lighter in winter. Quote Link to comment Share on other sites More sharing options...
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