Mr Polson 10,214 Posted March 29, 2013 I have two Weber carbs, which I plan to use both of to build into one good one to put my XF (stock 4.1). Have noticed a couple of differences. One has a red cable coming off near the throttle, is this the TPS that later models with elec spark timing are meant to have? (My current carb doesn't have this but I've got EST). Guessing if it is I should use it? Other thing is what seems to be some sort of vent from the float chamber to atmosphere or something? Big circle thing that pokes out into the top of the secondary. Any benifits to having this, or should I use the top section that doesn't have it? Share this post Link to post Share on other sites
thunderbolt 150 Posted March 29, 2013 use the one that allows the secondary to open fully at full throttle (probably the one without the TPS wire) Share this post Link to post Share on other sites
Mr Polson 10,214 Posted March 29, 2013 I don't think either of them of do, I think the one on there now is an early XF and this is a late one. I'll check though. I was going to mix the two together if I have to, the one on there at the moment doesn't have that pipe thing in the top of the secondary. Share this post Link to post Share on other sites
thunderbolt 150 Posted March 30, 2013 my ute had the tps and the bowl vent tube maybe the ones from the 90s don't have it to make the secondarys work properly fill in the slot in the circle with a mig 1 Mr Polson reacted to this Share this post Link to post Share on other sites
dizzy616 183 Posted April 29, 2013 i have 2 90s carbys with a vent bowl tube Share this post Link to post Share on other sites
