AJAS Posted July 25, 2023 Report Share Posted July 25, 2023 Hi all. I've been looking at changing hoses for ethanol types so have read up the various discussions on the forum. Having looked at the installation on the car, the pump outlet fitting is a screwed in metal pipe which has a hose fitted with a jubilee clip which then connects via an adaptor to a 'proper' hose which has correct screw fittings. I would like to replace the pump outlet fitting to a screwed adaptor that can connect directly to the 'proper' hose fittings. I've spent some time googling but can't find the pump outlet thread size. Does anyone have any ideas? Thanks in advance Tony Quote Link to post Share on other sites
Mike C Posted July 25, 2023 Report Share Posted July 25, 2023 Personally, for old components I'd use a thread gauge or unscrew the fitting and take it to parts shop. I've been caught in the past with old components having several alternative thread options when originally manufactured t. Quote Link to post Share on other sites
Waldi Posted July 26, 2023 Report Share Posted July 26, 2023 If it is a Bosch pump you can find it on the Bosch data sheet for your pump. The pump NRV is situated in the outlet ferrule and is worth inspecting. It’s purpose is to avoid loss of fuel pressure once the pump is stopped. Waldi Quote Link to post Share on other sites
AJAS Posted July 26, 2023 Author Report Share Posted July 26, 2023 Thanks both. I was hoping to get the parts in advance so I can do a straight swap. I'll look for the Bosch data sheet. T Quote Link to post Share on other sites
Paulfc Posted July 26, 2023 Report Share Posted July 26, 2023 Am I not correct in thinking that the use of hose clips on the output from the pump is a somewhat dangerous thing to do? I’ve always believed the hose connection to the pump output should be swaged due the pressure generated. Paul Quote Link to post Share on other sites
Waldi Posted July 26, 2023 Report Share Posted July 26, 2023 Hi Paul, some PI-owners believe a pair of hose clips is sufficient; I prefer the crimp-ferrule type for rubber hoses. I think that is what Tony (the OP) is planning to do. Waldi Quote Link to post Share on other sites
Mike C Posted July 26, 2023 Report Share Posted July 26, 2023 14 minutes ago, Waldi said: Hi Paul, some PI-owners believe a pair of hose clips is sufficient; I prefer the crimp-ferrule type for rubber hoses. I think that is what Tony (the OP) is planning to do. Waldi My car had a pair of SS Jubilee clips with the heads spaced 180 degrees apart on each hose joint when I bought it in 1996 and I've had no problems since. 10 years ago or so I calculated the FS on the WP using data from the available Jubilee manual at the time and it was something like 4 . I'm not worried at all leaving my current arrangement as is. Quote Link to post Share on other sites
BlueTR3A-5EKT Posted July 26, 2023 Report Share Posted July 26, 2023 My 996 has a M10 x 1 mm pitch thread Quote Link to post Share on other sites
AJAS Posted July 26, 2023 Author Report Share Posted July 26, 2023 Peter, perfect answer! Thanks for your and others responses, much appreciated Tony Quote Link to post Share on other sites
trchris Posted July 26, 2023 Report Share Posted July 26, 2023 When l had my pipes made at a local hydraulic supplier he said why weren’t l using normal hose clamps after l said because these run at 105psi he replied have a look at your compressor hoses and see what used on those l went emmmmm Chris Quote Link to post Share on other sites
Mike C Posted July 26, 2023 Report Share Posted July 26, 2023 2 hours ago, trchris said: When l had my pipes made at a local hydraulic supplier he said why weren’t l using normal hose clamps after l said because these run at 105psi he replied have a look at your compressor hoses and see what used on those l went emmmmm Chris +1 Quote Link to post Share on other sites
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