Andrew Hooper Posted February 15, 2011 Share Posted February 15, 2011 I may have missed a thread, but has anyone else read this bit in Lowflying. The reason the 'wedge' is there is to act as a counterweight in the unlikely? event of the throttle cable breaking. Without it the throttle could stay wide open. The mind boggles! Link to comment Share on other sites More sharing options...
Stationary M25 Traveller Posted February 15, 2011 Share Posted February 15, 2011 Don't have this feature on the larger diameter butterfly ! Looked at removing it at the weekend, and it wasn't there ! The spring on the outside of the TB would do a better job of keeping it closed if the cable broke ! Edited by - Stationary M25 Traveller on 15 Feb 2011 16:55:28 Link to comment Share on other sites More sharing options...
Stationary M25 Traveller Posted February 15, 2011 Share Posted February 15, 2011 D'oh ... double posting. BC seems very slow today ... is it just our wet-string village BroadBand ? Edited by - Stationary M25 Traveller on 15 Feb 2011 16:41:43 Link to comment Share on other sites More sharing options...
myothercarsa2cv Posted February 15, 2011 Share Posted February 15, 2011 Hi Andrew. I wrote the article - thanks for the feedback. Since Oilyhands has no problem doing this to his customers cars, I'm not overly worried myself. As Ian says, if the cable breaks, the spring will close it - the cable only opens it. If the spring breaks, well, wedge or no wedge, I bet it wouldn't close. Do a google image search for throttle body and report back here when you've found another TB with this useless feature Link to comment Share on other sites More sharing options...
MARK LE LAY Posted February 15, 2011 Share Posted February 15, 2011 Having read this article in LF, one thing that sprung to mind (excuse the pun) is that the solder infill may eventually work loose and get injested into the engine ! I suppose care will need to be exercised when soldering, to ensure that the material is clean and makes a decent bond, perhaps if the solder is allowed to flow so it forms a slight lip on both sides of the disc which will retain it in place if it did come loose. Just a thought. Link to comment Share on other sites More sharing options...
myothercarsa2cv Posted February 15, 2011 Share Posted February 15, 2011 Hence the chamfering If you open out the edges you should be able to form an hourglass type plug - it won't go anywhere then Link to comment Share on other sites More sharing options...
Andrew Hooper Posted February 15, 2011 Author Share Posted February 15, 2011 Mine was a 1600, but has been re-built as an 1800. It still has the original throttle body though, with the counterweight - I must say removing it does seem a cheaper option than buying the larger throttle body. Link to comment Share on other sites More sharing options...
myothercarsa2cv Posted February 16, 2011 Share Posted February 16, 2011 Give it a go Do you have the plastic or alloy TB? Link to comment Share on other sites More sharing options...
CageyH Posted February 16, 2011 Share Posted February 16, 2011 I thought the wedge was there to smooth the airflow to help prevent kangarooing on Rover metros and 200s Link to comment Share on other sites More sharing options...
MADMALC Posted February 16, 2011 Share Posted February 16, 2011 In addition David Vizard suggests thinning the leading edge of the butterfly and thinning the spindle to help maximise the area of the 'hole'. Did it on a mini with twin SUs, don't know if it made any difference but I felt better. Link to comment Share on other sites More sharing options...
Andrew Hooper Posted February 17, 2011 Author Share Posted February 17, 2011 Quoting myothercarsa2cv: Give it a go Do you have the plastic or alloy TB? Ally - anyone got one to spare? Link to comment Share on other sites More sharing options...
JetSepter Posted February 17, 2011 Share Posted February 17, 2011 Mark - wouldn't the solder vaporise as soon as it got into the cylinder? Or is the problem that it might hammer the valveseats before it got that far? Just wondering, 'cos I had the same thought as you when I read the article. Link to comment Share on other sites More sharing options...
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