Quote:
Originally Posted by beatr911
tjts1, nice photo. Some of those injectors don't look so effective. It would be interesting to know what improved injectors are available for older vehicles, like the BMW example that was mentioned. You know, like a plug and play upgrade guide for us with the old pintle style.
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The ones I'm familiar with are European cars with Bosch injectors for one kind or another. Fords from the late 90s used the 4 hole Bosch injectors and a handful of GMs as well. All Bosch injectors no matter what car they went into were one of 2 standardized physical sizes. Ignoring the spray pattern for a moment, a 20# Bosch injector from a Ford Crown Vic will work just as well in a Volvo, Saab, BMW, Mercedes etc as long as they also used 20# injectors. The spray pattern makes a minor difference in fuel economy, peak power and drivability but is not absolutely critical. Seek out injectors from a car with a similar port design and single cyl displacement as your own. So for example a 20# Bosch injector from a 4.6 liter 32 valve V8 (575cc cyl) 1999 Ford will make a good replacement for a 2.3 liter (575cc cyl) 4 cyl 16 valve 1989 Volvo that also requires a 20# injector.
The EV1 style injector with a single needle like pintle was designed in the 60s while the EV6 hit the market in the mid 90s. There is a good bit of R&D between the two yet one will swap right into the place of the other.
Injector size and aplication lists.
Stan Weiss' - Electronic Fuel Injector (EFI) Flow Data Table
WitchHunter Performance - Injector Cleaning & Flow Testing Services
ASNU Fuel Injector cleaning by post
More injector info.
ZETEC RACING CLUB › News › ZX2 Fuel Injector Guide
Most of this stuff applies to Bosch injectors but similar generational changes happened with Denso and other Japanese manufacturers. I just don't know the specifics.