JohnnyUK Posted October 4, 2017 Report Share Posted October 4, 2017 Well she is on the axle stands and the pump/ thermostat bolts are being soaked in WD40 until the weekend. I am paranoid about snapping a bolt on removal. Anyone had experience swapping out the pump? The YouTube vids always look to easy! Link to comment Share on other sites More sharing options...
Nobbie Posted October 4, 2017 Report Share Posted October 4, 2017 Did it myself a couple of months ago, I never felt worried about snapping any bolts, but depends on whether someone else has been in there first and bodged something or overtightened. Some of the bolts are tricky to access, so you might need some ingenuity. I put some pics on my running report "Nobbies Bargain Boxster" Good luck? Link to comment Share on other sites More sharing options...
jonogt6 Posted October 5, 2017 Report Share Posted October 5, 2017 Hi access is very tight, but I managed to change mine entirely through the engine access panel in the passenger compartment. I invested in a slim handled ratchet as I found that my standard one was too fat to allow the socket over several of the bolts The ratchet I bought was a Wera Zyklop 8004A quarter inch drive which did the job perfectly. None of the bolts were particularly tight do they came out easily. Good luck Jon Link to comment Share on other sites More sharing options...
RickLS7 Posted October 5, 2017 Report Share Posted October 5, 2017 I changed mine out last year (and the thermostat). As mentioned already, the bolts are not that tight, access to the top ones was the only difficulty. Link to comment Share on other sites More sharing options...
myfirstboxster Posted October 5, 2017 Report Share Posted October 5, 2017 Awkward job to do due to poor access ,hardest part for me was removing the old metal gasket ,you've got to halve it to get it out and it can be razor sharp so watch your fingers ! Link to comment Share on other sites More sharing options...
Nobbie Posted October 5, 2017 Report Share Posted October 5, 2017 10 minutes ago, myfirstboxster said: Awkward job to do due to poor access ,hardest part for me was removing the old metal gasket ,you've got to halve it to get it out and it can be razor sharp so watch your fingers ! Good point, I learnt the hard way? Link to comment Share on other sites More sharing options...
Boxstercol Posted October 6, 2017 Report Share Posted October 6, 2017 Thinking of changing the pump on mine as a preventative measure, but had planned on getting an Indy to do it. Is this a job that can be reasonably done on the driveway without ramps / axle stands. Also, any issues with bleeding the coolant after? Read some posts about having to get the cars back end in the air to help purging system of air locks. Link to comment Share on other sites More sharing options...
RickLS7 Posted October 6, 2017 Report Share Posted October 6, 2017 Don't even think of trying it without ramps or axle stands. I changed my coolant at the same time as replacing the pump. Make sure you get the same type as what's currently in the car, I never had any problems with air locks. Link to comment Share on other sites More sharing options...
JohnnyUK Posted October 6, 2017 Author Report Share Posted October 6, 2017 well the easy access bolts have cracked loose easy enough. Will drain engine tomorrow and drop the pump. Eurocarparts will do a pump, gasket and 5lt of coolant. Weekend discount gives 35% off! Also loosened a couple of the coil pack screws as oil tube rings are perished too... Mission creep setting in all ready!☺ Link to comment Share on other sites More sharing options...
JohnnyUK Posted October 7, 2017 Author Report Share Posted October 7, 2017 Original pump... 128000 miles! Not a bad innings. Coolant looks minging so I will try and flush it back through the rads. Might need some more antifreeze!? Link to comment Share on other sites More sharing options...
JohnnyUK Posted October 7, 2017 Author Report Share Posted October 7, 2017 ECP and weekend discount results in a KWP pump, gasket and 5lt antifreeze for £93... Not bad I think. Link to comment Share on other sites More sharing options...
RickLS7 Posted October 7, 2017 Report Share Posted October 7, 2017 I wouldn't fit any pump to a Boxster/911 that didn't have a composite impeller. KWP looks like a metal impeller, I would check online at the problems you can encounter with a metal impeller before fitting it. Link to comment Share on other sites More sharing options...
JohnnyUK Posted October 7, 2017 Author Report Share Posted October 7, 2017 will check it when I collect it. The cheaper option did not get great reviews. Somehow I don't expect to get another 100,000 miles on either!☺ Link to comment Share on other sites More sharing options...
Nobbie Posted October 8, 2017 Report Share Posted October 8, 2017 8 hours ago, JohnnyUK said: will check it when I collect it. The cheaper option did not get great reviews. Somehow I don't expect to get another 100,000 miles on either!☺ I suspect a lot depends on how you drive it. Most of my driving is done at high revs so I went for the expensive one. I suspect the cheaper ones are fine for everyday use, but probably don't last too long if you regularly use the full rev range as the bearings will probably not be as good quality and it seems to be this component that fails when a water pump breaks. Link to comment Share on other sites More sharing options...
RickLS7 Posted October 8, 2017 Report Share Posted October 8, 2017 I fitted a Laso pump, had good reviews from guys in the trade. When the bearings wear on a water pump, the impeller makes contact with the block on our engines. A metal impeller will then create aluminium fragments which spreads throughout the engine. You can see why Porsche fit a composite impeller as standard. Link to comment Share on other sites More sharing options...
T911UK Posted October 8, 2017 Report Share Posted October 8, 2017 KWP is metal, Laso or Genuine are plastic Link to comment Share on other sites More sharing options...
JohnnyUK Posted October 8, 2017 Author Report Share Posted October 8, 2017 Decisions decisions! I am all for saving £20 but don't want to be underneath again in 8000 miles because the bearing has gone. That said, the significant play in the old pump does not translate to any visible lateral movement in the impeller. Will discuss if they will swap when I go to collect! Link to comment Share on other sites More sharing options...
Boxstercol Posted October 8, 2017 Report Share Posted October 8, 2017 2 hours ago, RickLS7 said: I fitted a Laso pump, had good reviews from guys in the trade. When the bearings wear on a water pump, the impeller makes contact with the block on our engines. A metal impeller will then create aluminium fragments which spreads throughout the engine. You can see why Porsche fit a composite impeller as standard. An Indy told me that Laso are the original equipment supplier to Porsche for the water pumps. Also, think there is a 'how to' video on YouTube from someone who replaced their waterpump & apparently it was the original pump - in the vid it was quite clear that it was a Laso pump being removed (had the branding on it....). Where did you get your Laso pump & how much was it? Link to comment Share on other sites More sharing options...
RickLS7 Posted October 8, 2017 Report Share Posted October 8, 2017 Bought it from Eurocarparts, it was £147 in April last year. Link to comment Share on other sites More sharing options...
Jason986S Posted October 8, 2017 Report Share Posted October 8, 2017 9 hours ago, RickLS7 said: Bought it from Eurocarparts, it was £147 in April last year. Although they do a middle of the range one for half that (not claiming it to be as good - but just a point). Link to comment Share on other sites More sharing options...
PaulQ Posted October 8, 2017 Report Share Posted October 8, 2017 10 hours ago, Boxstercol said: An Indy told me that Laso are the original equipment supplier to Porsche for the water pumps. Think the originals are made buy Pierburg All the cheap ones seem to have metal impellers. Link to comment Share on other sites More sharing options...
JohnnyUK Posted October 8, 2017 Author Report Share Posted October 8, 2017 My choice was middle, you never pay the list price because of a discount! £127 vs £104 for the cheapest. Then a 35% discount. Link to comment Share on other sites More sharing options...
bagss2 Posted October 8, 2017 Report Share Posted October 8, 2017 14 hours ago, Nobbie said: I suspect a lot depends on how you drive it. Most of my driving is done at high revs so I went for the expensive one. I suspect the cheaper ones are fine for everyday use, but probably don't last too long if you regularly use the full rev range as the bearings will probably not be as good quality and it seems to be this component that fails when a water pump breaks. Exactly this. Wise-Nobbie speaketh the truth.... The 'cheapest option' ECP pump was fitted to my car by an indie in the South-West for the PO. I drive my car like Stuttgart intended and the pump lasted a mere 15 months and 9k miles before making the death-noise (I had it changed before it actually failed). Don't buy a cheap one, anyone.... Cheers, Baggers. Link to comment Share on other sites More sharing options...
JohnnyUK Posted October 8, 2017 Author Report Share Posted October 8, 2017 A number of manufacturers claim to supply the factory. KWP also claim to use plastic impellers on certain pumps. Guess I will know tomorrow ☺ Link to comment Share on other sites More sharing options...
edc Posted October 8, 2017 Report Share Posted October 8, 2017 How many real cases of metal impeller pumps grinding the case say have people actually seen? We've all heard the rumour but I've never seen a case. Link to comment Share on other sites More sharing options...
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