Baz81 Posted February 21, 2006 Posted February 21, 2006 I've been searching through sites looking for as much Info as I can on the EJ20 as knowledge is power, and I came across a new product from Jun. A high flow oil pump. Now being a victim of an oil starved engine myself I think that this should be a must have engine upgrade. I've attached the link to the site so you can have a peak. http://www.junauto.co.jp/news/index-e.html?000050 Just a small update: found this closer to home for £185 http://www.performancesubaru.co.uk/product...=162&cat=56
harvey_smith Posted February 27, 2006 Posted February 27, 2006 Have you considered the Roger Clark modified oil pump which is the choice on many of the top engines in the UK ?
neilswrx Posted February 27, 2006 Posted February 27, 2006 what about the g goode one is this one any good?
Highlander68000 Posted February 28, 2006 Posted February 28, 2006 The 'Modified' pump is completely different to the Jun pump. RCMS, GGR, API and Performance Subaru offer modified pumps. I am reliably informed that these pumps are 'tweaked' to prevent any problems with the pressure valve sticking open and to ensure that the impellor housing does not come loose. They do not flow any more oil than the more-than-adequate original. The Jun pump is a high flow pump, which is different to the above. Loss of flow in high-G situations is another problem which should be addressed for car that will be used regularly in that situation. Engine rebuilds benefit from using STi9 (?) bearings and are highly recommended by many of the tuners (that's what they tell me anyway).
insane clown Posted February 28, 2006 Posted February 28, 2006 22b andy put me a roger clarke oil pump in and can say you can almost hear the difference!!, car seems quiter now, even though 130000 miles on it, i'll have to fish out the bill for it for price including fitting[]
Highlander68000 Posted February 28, 2006 Posted February 28, 2006 £175 just for the pump from RCMS (+p&p) Insane Clown - the old one must have been buggered or Andy has put different oil in. The roger clark pumps (like all the others) are nothing more than OEM pumps with modifications to the pressure relief part of it (which makes no noise that you could ever hear). There are no modifications to the impellor or the housing.
P1 NUT Posted March 1, 2006 Posted March 1, 2006 Asked GGR about the one they are selling on ebay and he informed me that it is the same one as they have on their 500bhp demonstrator. Its going for £160 with £8 postage.
mocomracing Posted March 1, 2006 Posted March 1, 2006 We stock the RCMS modified pump for £170 all in so the GGR price is quite good in comparison and from my understanding they are both very very similar if taken apart to examine the components.
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