[Vwdiesel] Injectors Bosch. ---( a little nozzle talk for beginners )H.Hagar h_hagar at prcn.org
Sun May 2 12:20:34 EDT 2004
Seems like yesterday that Loren had to tell me that nozzles were available for injectors. ----- Now that I have done and tested a bucket full of the "Masterpieces" ---the worry was for nothing. Everybody here can do those Bosch injectors --that's how easy they are to do. Hell I only use torque wrench ---- to be fuzzy . Mark Shepherd asked about nozzles ---so this is to answer him. The nozzles are clearly marked with a number. The number is a Bosch number and it is different from the VW number. Here is a sample of numbers Bosch DN 0 SD 193 VW 068 130 211. that is the proper nozzle for the 1.5L NA. For the 1.6L NA and turbo use SD 293. Are there other nozzles available ? yes. like a SD 273. So what is the difference in the nozzles ? very little except price. It has to do with the geometry of the pintle and seat. Think valves , the angle of seat and so on. The angle of seat will change how much fuel is injected in relation to lift of pintle. Slow release makes for a nice quiet engine , less marbles --smaller marbles. By the way a full squirt takes only about 1 Ms That's fast. Have I tried say a nozzle made for a 1.5L in say a 1.6L Turbo ? I drive it every day works like a dream. Using Hillbilly tuning ---I can not detect any difference between nozzles. So they all work. I have tried them all. My advice is to try to get the Throttling nozzles --- nice slow injection. They may be hard to get. I am still looking. There you go Mark Shepherd ------ To get the nozzles cheap is another issue. If you have a brother in law in Brasil thats were to ask. I pay 14.30 dollars canadian for each. Can injector pintles be lapped in like say exhaust valves ? --yes indeed I know a mercedes guy who claims it is done in Germany. If in doubt get NEW nozzles ---- and keep track of mileage. From first hand experience new nozzles , saved me a LOT of time. No dripping and reliable opening pressure. Hagar. PS: It is raining this morning so I got time to write.
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