rider Posted January 10, 2017 Share Posted January 10, 2017 (edited) My injectors have never been touched and as far as I am aware they are running fine with no fuel leaks and power output seems fine. But with 20 year old seals fuel leaks are likely to start sometime, anytime. The Toyota part number for the injectors is 23209-49025. Does anyone know what volume these injectors are rated to? Also, if you replace with say a larger capacity injector do you then need to also have the car mapped for the higher fuel delivery rate. But would the fuel injection rate vary significantly if you are still running the original fuel pump? Aside from those questions the price on OE injectors ranges wildly online but is seems you can get a full 6 set (remanufactured) for around £225 delivered taxes paid. Or you can get the O ring set to change on the existing injectors for around £50. Would it be better to buy in a new set of injectors ready for the day when the old seals fail or would a simple seal kit be the prudent option to keep everything running as before? Edited January 10, 2017 by rider (see edit history) Quote Link to comment Share on other sites More sharing options...
Nic Posted January 10, 2017 Share Posted January 10, 2017 J-spec GTE injectors are 440cc. Getting your injectors cleaned and flow tested by a specialist would be cheaper (something you should also do before fitting brand new injectors). Bigger injectors would need an aftermarket ECU and mapping. Quote Link to comment Share on other sites More sharing options...
rider Posted January 10, 2017 Author Share Posted January 10, 2017 Thanks Nic. I had a useful chat with mrinjector who does a lot of seal kits but not for these. He did mention that the side injectors can be really difficult to part from the fuel rail and quite often one or the other gets damaged. He did mention the Denso viton O rings are the best in the business and often he sees them as good as new even when 20 years old. So the recommendation was if it isn't broken don't look to fix it. I'll probably buy the seal kit, Whifbitz stock them, and leave doing anything until the seals fail. With mrinjectors comment about damage, would it be wise to have a spare fuel rail to hand? I'm sure someone who has done an injector or seal replacement would have an idea on that. Quote Link to comment Share on other sites More sharing options...
berg Posted January 10, 2017 Share Posted January 10, 2017 If you send them off to be ultrasonic cleaned, most places replace seals etc at the same time The last set i sent off cost me around £70 all in for the 6 to be ultrasonic cleaned, they also changed all the o-rings etc as part of the process Quote Link to comment Share on other sites More sharing options...
rider Posted January 11, 2017 Author Share Posted January 11, 2017 Bargains can still be had, bought a fuel rail full of injectors from a US breaker for $49. When they arrive I'll send them off to get cleaned, tested and resealed so I have a rail ready to simply swap out whenever. Quote Link to comment Share on other sites More sharing options...
Mike2JZ Posted January 11, 2017 Share Posted January 11, 2017 New seals can be had from toyota fyi Quote Link to comment Share on other sites More sharing options...
Nic Posted January 11, 2017 Share Posted January 11, 2017 Bargains can still be had, bought a fuel rail full of injectors from a US breaker for $49. When they arrive I'll send them off to get cleaned, tested and resealed so I have a rail ready to simply swap out whenever. US or J-spec? Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted January 11, 2017 Share Posted January 11, 2017 US injectors are a different flow rate to J-Spec and cannot (or at least SHOULD not) be interchanged. I have never had much luck with rebuilt or re flow profiled injectors, I always buy brand new, branded ones. Used injectors do not sit well on a shelf for long periods. Quote Link to comment Share on other sites More sharing options...
rider Posted January 11, 2017 Author Share Posted January 11, 2017 US or J They will presumably be US spec, listed as 440cc 23250 46040 which is listed as interchangeable, equivalent to 23209 49025. http://www.paulr33.com/powerfc-faq/inj_side-en.htm High Impedance: 13.5 ohms Flow Rate: 440cc/min @ 3 BAR For the price, they are near enough throw away anyway. Quote Link to comment Share on other sites More sharing options...
rider Posted January 11, 2017 Author Share Posted January 11, 2017 US or J Presumably US spec listed as 440cc 23250-46040 for which there are quite a few sites cross reference as equivalent to 23209-49025. http://www.paulr33.com/powerfc-faq/inj_side-en.htm Quote Link to comment Share on other sites More sharing options...
Nic Posted January 11, 2017 Share Posted January 11, 2017 23209-49025 are j-spec injectors so they should be OK to use, you'll know by the colour of them. Quote Link to comment Share on other sites More sharing options...
rider Posted January 11, 2017 Author Share Posted January 11, 2017 I contacted the US breaker and asked to confirm the spec and part number and said they were off a jspec which is why they are so cheap as they need to go for export. Possibly jspecs are already making their way into the USA ahead of the 25 year ruling to be stripped for parts? Quote Link to comment Share on other sites More sharing options...
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