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NA10X injectors in 91 Jetta?
by
motomike33y
on 22 Dec, 2009 12:33
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Just got hold of some new NA10X injectors. I believe they were for 1.5 but I want to use them in my 1.6 1991 NA Jetta. Anything special I need to do? Different pop pressure? timing? thanks if anyone knows.
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#1
by
theman53
on 23 Dec, 2009 07:57
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I think but am not sure that the 1.5 had a higher pop pressure, but I think you can use those nozzles as they should be the same. As long as you set it to 155bar I would think it should be fine. I am sure andrew or saurkraut or someone on here will have a difinative answer.
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#2
by
motomike33y
on 23 Dec, 2009 12:38
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I thought it was supposed to be 130 or 135 BAR for the non-turbo, normal aspirated like mine? I've never checked them, but am contemplating building or buying a pop tester to check all my old injectors.
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#3
by
theman53
on 23 Dec, 2009 19:45
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This is something I have only read about so take it as such.
I thought the 1.5 early pumps were a little different and the injectors opened at 170-180 bar? Maybe I am off on that. I know the 1.6 turbos were 155 and the n/a s are 130. I think that they all took the same nozzles so as long as the breaking pressures are correct for your engine you should be fine.
I thought the 91 was an eco. Eco had a turbo just not a true turbo pump. I don't know what the eco had for injectors though.
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#4
by
wolf_walker
on 23 Dec, 2009 20:27
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And let's not forget that Bosch lists TWO different numbers for NA 1.6L VW diesels.
I haven't been able to stay on hold long enough on the Bosch tech line to ask them why.
I put A2 injectors in my A2 motor/A1 pump caddy, wrong, right? Nobody knows.
But I'd like to.
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#5
by
motomike33y
on 27 Dec, 2009 17:05
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I've got an older pump off a rabbit, because it would work and the 91 stock pump wouldn't. I have'nt checked the pump timing, but probably next weekend will have some time, then I'll put it together with the 10x injectors and we'll see what happens. starter doesn't spin it like I'd like, but we'll see.
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#6
by
Rabbit on Roids
on 29 Dec, 2009 13:02
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the injectors should have a number on the side somewhere "xxx bar". if they havent already been rebuilt and are in the right bodies, that will tell you more about what to time them at.
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#7
by
dennis
on 29 Dec, 2009 14:59
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NA10X injectors fit 1.5 VW, and 2.4 VW in a Volvo.
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#8
by
motomike33y
on 30 Dec, 2009 09:55
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just got them off ebay-they are remanufactured by bosch-say NA10X. Also some remanufactured that say NA11X. will try to pop test them if I can rig up an adaptor.
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#9
by
dennis
on 30 Dec, 2009 12:10
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NA11X = 1.6 Turbo 85ish.
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#10
by
motomike33y
on 03 Jan, 2010 16:33
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NA10X pop tested at around 2100 psi, the NA11X at around 2300 psi. the injectors I took out popped between 1900 and 2000(the two that worked, the other two dribbled too much to get pressure up to pop). I'm still trying to get my dial gauge working right to set the injection pump timing, but I'll shoot for about .95 mm and go with the NA10X injectors and see what happens.
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#11
by
motomike33y
on 07 Jan, 2010 16:14
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turned out there were only 2 NA10X, rest were 11X, so I'm going to see about opening up a couple a shimming them down-hopefully this weekend
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#12
by
dennis
on 08 Jan, 2010 06:05
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I am currently negotiating a 2.4 Turbo DIesel for my Volvo 240 Wagon. The current NA 2.4 uses NA 10X injectors, so I thought I would look up the 2.4 turbo injectors. NA40X. Never seen these before. FIgured they would be NA11Xs.
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#13
by
wolf_walker
on 08 Jan, 2010 16:59
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That's 144 and 158 BAR respectively, aren't the NA's supposed to be 130 or 135 BAR?
I'm sure it'll run but it has to be screwing with the timing.
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#14
by
motomike33y
on 10 Jan, 2010 16:36
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My Bentley's says the ME engine injectors should be between 130 and 138 bar. what's the conversion between bar and psi? I've never had to deal with it before I started playing with these injectors. Maybe I can detune the NA11X injectors with different washers-since I have several that are too high a pop pressure for my use. any idea what the timing problems would be with the higher pop pressure? Would car even start/run? it's been too cold to do much outside where the car sits so I'm brainstorming ideas.