landrover598 Posted August 9, 2007 Share Posted August 9, 2007 Can somone confirm if RTC4741 is a vented or non vented fuel cap ? IIRC, grey caps are non vented, am i right ? I needed to replace the one from my landy, as i broke it, and wanted to get a geniune, non leaky one, So as mum was off work today, she went to the stealership, armed with my list of requirments (2 pin, locking, vented, black), and came home with a grey RTC4741 and £41 lighter Quote Link to comment Share on other sites More sharing options...
mmgemini Posted August 9, 2007 Share Posted August 9, 2007 I can't confirm the part number. I can confirm that black caps SHOULD be vented. Mine wasn't. I had to strip it and drill a vent hole..... Aparently there was a batch of black caps sent out non vented..... mike Quote Link to comment Share on other sites More sharing options...
western Posted August 9, 2007 Share Posted August 9, 2007 Fuel cap, locking NON-vented RTC4741 vented one is RTC4740 hth Quote Link to comment Share on other sites More sharing options...
landrover598 Posted August 9, 2007 Author Share Posted August 9, 2007 So i'll send it back and ask for STC4072. Just out of interest, how does the tank vent, with a non vented cap ? and where is the vent in the cap? as i'll pull this one apart to double check. Quote Link to comment Share on other sites More sharing options...
western Posted August 9, 2007 Share Posted August 9, 2007 confused me & EPC with >>>>> STC4072 did you mean RTC4740 on my vented tank/cap the vent hose comes from just above the fill pipe to the top of the fill neck, just under the cap, not sure how a non-vented cap/tank is done. Quote Link to comment Share on other sites More sharing options...
landrover598 Posted August 9, 2007 Author Share Posted August 9, 2007 confused me & EPC with >>>>> STC4072 I got that from Paddocks site, not the best source i know my vent pipe goes from the top of the tank, to just under the cap on the neck as you've described. Quote Link to comment Share on other sites More sharing options...
western Posted August 9, 2007 Share Posted August 9, 2007 I got that from Paddocks site, not the best source i know my vent pipe goes from the top of the tank, to just under the cap on the neck as you've described. you need RTC4740, otherwise fitting a non-vented one is gonna cause all sorts of problems. there's a small ball valve inside the cap workings that lets in vent. Quote Link to comment Share on other sites More sharing options...
Guest diesel_jim Posted August 9, 2007 Share Posted August 9, 2007 So i'll send it back and ask for STC4072.Just out of interest, how does the tank vent, with a non vented cap ? and where is the vent in the cap? as i'll pull this one apart to double check. A mate in his V8 90 had a non vented cap and "vent Kit" fitted. it consisted of a T piece to attach where the little thin pipe is just inside the filler cap, than a l;ength of pipe vent up to the roof (truck cab) and hooped over on itself. so the tank could vent through the pipe, but not leak unless the 90 was ay very silly angles (which it often was.... Bruce Stidsons 90... remember Pete-bathtub?) Quote Link to comment Share on other sites More sharing options...
landrover598 Posted August 10, 2007 Author Share Posted August 10, 2007 STC 4072 was the correct part number for the vented cap, and also £15 cheaper than the non vented Quote Link to comment Share on other sites More sharing options...
western Posted August 10, 2007 Share Posted August 10, 2007 that's taken over from RTC4740 then, good it's sorted. Quote Link to comment Share on other sites More sharing options...
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