C4RL0
Member
Registered: 30th Sep 06
Location: Cumbria
User status: Offline
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In the process of rebuilding my LET before it finds a new home in the Corsa. First on my list is the oil pump, am I right in saying that I have to take the bottum pulley off for this? The main bolt in the pulley looks like an E24, is this right? Just so i don't go buy the wrong tool.
And what is needed for the oil pump, any special tools? Can anyone give me a short brief on how to change it.
Another quick question, I bought a new standard oil pump. I am going to be running nearly 300bhp, do you think I should buy the uprated oil pump with steel internals from Regal?
Any help much appreciated 
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Scholesy88
Member
Registered: 25th May 10
User status: Offline
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pretty sure you need the e24 and the rest will just be a 10mm spanner where did you get your oil pump from as i bought a brand new one for my 20xe only last year and am wanting to swap it over to my project which is let
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Danny W
Organiser: East Midlands
Premium Member
Registered: 14th Nov 05
Location: Northamptonshire
User status: Offline
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Cant remember if its an E20 or E24 so cant help you with that
no special tools are needed for the oil pump an it is a fairly easy job to change, once the pulleys are marked and the cambelt removed, you'll need to remove all the pulley's and tensioners, then remove the backing plate, the sump will need to come off too, i think its 5 10mm bolts then hold the pump on.
make sure the mating faces are clean when replacing and you'll need a new gasket
Standard GM pumps will be fine and will cope with 300bhp, although you can buy uprated internals for them from the likes of SBD or Regal
SBD also sell a nylon relief valve to replace the standard metal one (i think Beardy off here has started making copies too) its not a requirement but i have heard a lot of people say the standard one can stick when worn or dirty oil passes through, i replaced mine for peace of mind.
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