A bit of a mystery about a set of four 1.8L injectors compared to known info. Known is VW/Bosch part 022906301C/0028150112, with spec of 18.1 lbs/hr or 190.2 cc/min. See top of pic (blue module).
This other set (bottom of pic gray module) has same VW number but has Bosch number 0028150102 (not 112); Mr Injector test results show 200 cc/min. Looks same as known. Can find no reference for a Bosch injector ending in 102.
Questions: 1. Might the second set just be stamped wrong or are older, being superseded by 112?
2. Any undesirable or unwanted results from flow slightly higher than spec? Would it run rich?
Way out of my wheelhouse here, so community experience and wisdom much appreciated!
Jeff's table is still the best reference tool going IMO: http://www.914world.com/bbs2/index.php?showtopic=78993&st=0&p=1105007&#entry1105007
a quick google search of that Bosch number shows an ebay ad for fitment to a 75-79 VW Bug.
These systems aren't measuring resulting mixture at all, hence no O2 sensors. So, it will inject fuel based on upstream inputs only; no down stream trimming.
Are you thinking about a mix and match set or running all 102 vs 112s?
I guarantee you that your old injectors are not spraying evenly. My engine smoothed out so much with new flow matched injectors... made a little more power too.
Anyway, running a matched set is definitely the correct way. At worst you'll just need to trim fuel a bit. But remember that .9lbs/hr is max flow rate. Dynamic flow measurement allows you to match fueling curves at part throttle loads which is where your bigger flow difference is likely to be.
When I had those 7 tested, one of the three that failed was spot on at max flow, but the curve was way low; meaning that cylinder would be lean as hell during regular driving.
@http://www.914world.com/bbs2/index.php?showuser=224 Ed; any insight or experience on this mystery?
Bill “Mr. Injector” informs me that the two are equivalent (hence same VW number).
@http://www.914world.com/bbs2/index.php?showuser=104 another 1.8 equivalent part number for your table?
from my trusty aus site
https://aussieinjectors.com.au/injector-by-number/
the 102 injectors are not attributable to any particular make or model of car.
not sure what that means.
similar info
definitely some kind of very close substitute.
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