Injector Pump out of spec should i even run it? - page 3 - IDI Engine - VWDiesel.net The IDI, TDI, and mTDI source.
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#30 by wolf_walker on 05 Mar, 2013 19:28
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The TD one's are a different break pressure, you need NA that match what your pump is expecting.
I'd buy a rebuilt set from someone like this, I hardly trust Bosch anymore.
http://oregonfuelinjection.com/index.php?pid=35#VW_REBUILT_INJECTORS
Not that playing with yours is a bad idea at all, but if you are trying to get it running right
and you haven't been around them for awhile, removing a variable might make things go
more smoothly. -
#31 by vw-tim on 05 Mar, 2013 19:34
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The TD one's are a different break pressure, you need NA that match what your pump is expecting.
I'd buy a rebuilt set from someone like this, I hardly trust Bosch anymore.
http://oregonfuelinjection.com/index.php?pid=35#VW_REBUILT_INJECTORS
Not that playing with yours is a bad idea at all, but if you are trying to get it running right
and you haven't been around them for awhile, removing a variable might make things go
more smoothly.
Thank you! I think ill just go with them and not even waste my time messing with what i have right now. -
#32 by 745 turbogreasel on 05 Mar, 2013 19:48
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The rebuilder will be doing the exact same thing, except using new nozzles.
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#33 by 8v-of-fury on 05 Mar, 2013 19:53
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The TD one's are a different break pressure, you need NA that match what your pump is expecting.
Nothing internal of the pumps require a certain break pressure of injectors. With the higher break pressures you simply need more static timing. The internal pump pressures, plunger size and stroke are all the same between NA and TD. -
#34 by wolf_walker on 05 Mar, 2013 19:54
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The rebuilder will be doing the exact same thing, except using new nozzles.
Yep, and they have done it many, many times before and have an eye for correct spray pattern and might notice a weeper.
Least that's the theory.
Nothing against VW-Tim, and everyone ought to learn sometime, but trying to get a new motor to run when one has very
little (I'm assuming) experience probably isn't the best time. Hell I don't rebuild mine, for $150 and I keep my hands clean?
No thanks to all that put together, take apart. If they pop nasty I get them rebuilt by someone. Maybe I'm getting old.
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#35 by wolf_walker on 05 Mar, 2013 19:59
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The TD one's are a different break pressure, you need NA that match what your pump is expecting.
Nothing internal of the pumps require a certain break pressure of injectors. With the higher break pressures you simply need more static timing. The internal pump pressures, plunger size and stroke are all the same between NA and TD.
"Need" as in to be able to function correctly when set to the spec in the book.
One can make a lot of things work that aren't quite right, I encourage following spec whenever possible unless there is a need
to do otherwise. Like necessity, or cost savings for instance. -
#36 by 8v-of-fury on 05 Mar, 2013 20:05
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spec in the book.
Well the spec in the book means nothing to an engine with any amount of kilometers/miles on it
. So therefore, it is deemed completely useless.. That is unless you are building a zero mile engine.
I do believe you are the one who thinks "hill-billy" tuning is the devil, but it is what is necessary in this instance..
Using higher or lower break pressure injectors depending on personal preference for emissions or power is not "making things work".
Volkswagen has used break pressures all over the map.. I can tell you for a fact, nothing about that is specific to the pump OR engine. -
#37 by wolf_walker on 05 Mar, 2013 21:22
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I disagree but only partly, and some of that is philosophical. And I have nothing against timing by ear because of wear or any other sort of creativeness. I've been driving these things since I was sitting on my father's lap, and most of them have been pretty tired one way or another. I'm pretty comfortable with making do. But I choose to strive for an ideal in all things.
I also try and not actively pass disinformation, but my opinion is worth exactly what everyone pays for it.
Sent from my SCH-I535 using Tapatalk 2 -
#38 by 8v-of-fury on 05 Mar, 2013 21:47
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My apologies, it was someone else who thinks timing by ear is voodoo/black magic haha.
I understand your ideal, but this instance is not "making do". NA's were offered with higher break injectors at one point or another in the 1.6 IDI's lifetime.
Spewing incorrect information is also a good thing to strive against, I am with you on that one. -
#39 by wolf_walker on 05 Mar, 2013 22:15
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No worries. I don't pretend to know it all.
I have a file somewhere with all the IDI injector part numbers, from VW, that I could locate and corosponding Bosch numbers. They are interesting to say the least. Also that most rebuilders just split them as NA and TD. And the pump changes. Oi...
Sent from my SCH-I535 using Tapatalk 2 -
#40 by vw-tim on 06 Mar, 2013 09:38
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I really appreciate all your guys input and help with all of this!
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#41 by wolf_walker on 06 Mar, 2013 10:20
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It's what we do dude.
I like to see these old cars on the road, and when people are left
to figure it out themselves they more often than not end up with a
bad opinion of VW-D's. I STILL run into people that bought an early
1.5L car new and insist every VW-D does nothing but blow headgaskets and
overheat and don't start if it's even chilly out, etc, etc, etc.
None of them can account for the last like, million miles I've driven
them with little to no incident. For the record I've only had two die in service, and they
were both batteries that crapped out of the blue in grocery store parking lots.
I took a fire hydrant in the drivers rear door of an 85 TD Jetta once in the rain @60mph
after being cut off and trying to evade, and drove the car six miles home.
They got heart. Treat em right and they will
take care of you and yours.
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#42 by 8v-of-fury on 06 Mar, 2013 12:51
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They got heart. Treat em right and they will
take care of you and yours.
Character too, but mine doesn't like to treat me right.. haha. -
#43 by vanbcguy on 06 Mar, 2013 13:32
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They got heart. Treat em right and they will
take care of you and yours.
Character too, but mine doesn't like to treat me right.. haha.
There's a reason my car is named Jezebel... she has a way of playing tricks on me for sure. Though she usually gives me some warning first. -
#44 by wolf_walker on 06 Mar, 2013 18:31
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They got heart. Treat em right and they will
take care of you and yours.
Character too, but mine doesn't like to treat me right.. haha.
Heh.. Character for sure.
I'd like to say it's why I still drive them, and I do drive something else now and again for a year or so.
But I always come back. Rattles and leaks and annoyance galore with aging chassis, questionable road
manners, declining parts quality, etc, etc, always back.
I've owned and been around some of the best cars every made, every iconic Euro car from E30's to
Saab 99's and everything in-between, lots of diesels, some fast gassers, some not, etc, etc. While
an 80's redblock Volvo is close, and so is a W123 Merc-D, there isn't anything cheaper or simpler or
easier or more reliable if one does there part than an IDI VW-D in my experience.