glynherron Posted October 2, 2008 Report Share Posted October 2, 2008 Hi guys Long time away I know, but I'm now out of mourning for my beloved V8 Got myself a trusty S4s in MNY yummy!!!!!! Quick question to get the juices flowing...... It still has the exhaust back pressure valve fitted, although the hardware to open and close it are missing. Does the spring hold the valve fully open or fully closed?? It is lacking in power and noticed this when it was being MOT'd Thanks ps anyone got an engine cover as mine is missing!!!! Quote Link to comment Share on other sites More sharing options...
Backmarker Posted October 2, 2008 Report Share Posted October 2, 2008 Welcome back Glyn. Any pics to post? Can't answer your query, but hopefully see you soon Graham Quote Wing Commander Dibble DFC<br /><br /> North Midlands Esprit Group<br /><br />NMEG "the formidable squadron"<br /><br /> "probably the most active Esprit group in the world" Andy Betts, Castle Combe May 2007 Link to comment Share on other sites More sharing options...
Vulcan Grey Posted October 2, 2008 Report Share Posted October 2, 2008 without something to hold it open, it will be shut. Use a long bolt to hold it open or make a bracket that holds it open. Quote Travis Vulcan Grey 89SE Link to comment Share on other sites More sharing options...
DanR Posted October 2, 2008 Report Share Posted October 2, 2008 (edited) a picture paints a... Edited October 2, 2008 by DanR Quote DanR Link to comment Share on other sites More sharing options...
Advantage Posted October 2, 2008 Report Share Posted October 2, 2008 Neither the actuator or corresponding spring are fitted in that photo. If these are still in place but not working for whatever reason, the flap will be shut leading to a loss of power and a reluctance to rev cleanly. Quote Link to comment Share on other sites More sharing options...
DanR Posted October 2, 2008 Report Share Posted October 2, 2008 Yep, but shows you how to set it up for being permanently open. Quote DanR Link to comment Share on other sites More sharing options...
s4simon Posted October 2, 2008 Report Share Posted October 2, 2008 Or for a few bucks you can fit one of these. Quote Simon (94 S4) My Esprit will be for sale in late 2017 Link to comment Share on other sites More sharing options...
glynherron Posted October 4, 2008 Author Report Share Posted October 4, 2008 Guys, thanks for your replys, so thats one problem to fix! Its so good to be back!!! Photos will follow but needs repainting - god I pick em !! Thanks Dan and Simon for the pics Long bolt for now and a spacer when i know what other money needs spending and where!! TTFN Quote Link to comment Share on other sites More sharing options...
rocket63 Posted October 4, 2008 Report Share Posted October 4, 2008 Welcome back Glynn Quote Caught between a rock and a hard place in a catch 22 situation, So its 6 of one and half a dozen of the other. Your damned if you do, but your damned if you don't so shut your cock!!!!!!!!!!! Lotus Espirt Turbo S3 Lotus Esprit S4 Lotus Elise S2 Sport 130 Link to comment Share on other sites More sharing options...
andydclements Posted October 4, 2008 Report Share Posted October 4, 2008 I'm planning to fit one to mine but alter the controls in an attempt to use it as a noise control mechanism. The idea is, when it's closed the noise from the exhaust will be slightly reduced due to the increase in gas flow resistance. I can either control it electronically by the solenoid that controls the vacuum to the valve, or by direct control, either electronci stepper motor or good old cable. That way when I want to drive with less noise (residential area early morning or late at night) I can reduce the noise, then put it back to near normal when I'm on the open road. Anybody else tried anything similar? Bibs have you considered something to reduce your noise level to below 114dB? Quote Link to comment Share on other sites More sharing options...
ramjet Posted October 4, 2008 Report Share Posted October 4, 2008 The two mechanics over here in Melbourne both advise getting rid of the EBPV as they fail. Their answer is to remove the unit, remove the butterfly plate from the shaft and reinstall the unit. Problem solved and if the car gets looked at by anyone, it all looks legit. Quote All we know is that when they stop making this, we will be properly, properly sad.Jeremy Clarkson on the Esprit. Opinions are like armpits. Everyone has them, some just stink more than others. For forum issues, please contact one of us Moderators. Link to comment Share on other sites More sharing options...
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