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Matching my engine to an Injection Pump
by
coolclay
on 23 Jun, 2013 14:06
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So long story short, I purchased my '81 Rabbit Pickup in 2008 and have driven it cross-country 3 times
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The whole time assuming my engine was the stock 1.6. Now I am changing out the injection pump, and realize that I have bosch pump # 0-460-494-005. According to online sources this pump is designed for the 1.5L (78-80) and that the correct pump for the '81 1.6L is 0-460-494-077.
Now of course it's likely the engine is not stock but I am having trouble identifying whether my engine is a 1.5 or 1.6. The head says 81 and has 2 nipples and 058-103-373M. So does the 81 on the head indicate it is actually an '81 1.6 and I should change the IP to 077? Or should I stick with what I've been driving it with for the past 4 years.
Can anyone out there help me figure out what I am dealing with! Thanks bunches!
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#1
by
8v-of-fury
on 23 Jun, 2013 14:11
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Doesn't really matter.. They will all run it just fine.
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#2
by
damac
on 23 Jun, 2013 15:49
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Doesn't really matter.. They will all run it just fine.
I put a 1.5 pump on my 85 jetta for a few months just to see and I didn't notice any difference
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#3
by
wolf_walker
on 23 Jun, 2013 15:58
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We don't know what the difference really is, and it isn't readily apparent in use, even though the people that designed the things clearly made a lot of distinctions between injection systems on various motors. To be more specific.
I have an obscure 80's Audi 80 1.6L pump on my NA 1.9L that "runs fine" too, but it isn't optimal.
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#4
by
coolclay
on 23 Jun, 2013 16:22
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Good to know! So can anyone tell me if my engine is actually a 1.6 based upon a head that says 81 and has 2 nipples and 058-103-373M?
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#5
by
8v-of-fury
on 23 Jun, 2013 17:53
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There are a few things that differ the two.. Head-bolts are a for sure, and the crank bolt is another 50/50 tell-tale. They have been wrong though.
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#6
by
wolf_walker
on 23 Jun, 2013 19:21
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Isn't it stamped on the back of the block 1.6?
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#7
by
theman53
on 23 Jun, 2013 20:00
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Also I know the 1.6 codes pretty well, stamped on the front.
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#8
by
bajacalal
on 23 Jun, 2013 23:15
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It could just be the housing of the injection pump too, with the old build tag on the housing, and different internals. But who knows. I've heard there is something shops are supposed to do to the build tag to indicate the pump has been changed internally but I doubt it's done often. I have a housing from who knows what on my Dodge because one of the springs broke inside and trashed the housing.
Also, where is this online source of information that tells you what vehicles each part fits? I want to know.
And yes, the blocks should have the displacement cast into them somewhere, in big numerals, but you may have to crawl up under the engine to see.
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#9
by
wolf_walker
on 24 Jun, 2013 10:10
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It could just be the housing of the injection pump too, with the old build tag on the housing, and different internals. But who knows. I've heard there is something shops are supposed to do to the build tag to indicate the pump has been changed internally but I doubt it's done often. I have a housing from who knows what on my Dodge because one of the springs broke inside and trashed the housing.
Also, where is this online source of information that tells you what vehicles each part fits? I want to know.
And yes, the blocks should have the displacement cast into them somewhere, in big numerals, but you may have to crawl up under the engine to see.
I could have sworn it was on the backside of the block in tall cast numbers.
On the PN's, there's lots of little references, I usually search a specific number and find the app. I don't have a single go-to, other than ETK of course.
I found some Italian site with a TON of Bosch nozzle and injector numbers awhile ago.
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#10
by
8v-of-fury
on 24 Jun, 2013 16:11
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Also, where is this online source of information that tells you what vehicles each part fits? I want to know.
All the Bosch
VE stuff is interchangeable as they all share the same Bosch pump family,
VE.
I have mixed and match many many many pieces to get my own stuff going in the past when needed.. It all turned out the exact same, and they all ran great.
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#11
by
8v-of-fury
on 24 Jun, 2013 16:15
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All the Bosch VE stuff is interchangeable as they all share the same Bosch pump family, VE.
Some stuff needs modifying if you want to go crazy.. lol
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#12
by
coolclay
on 26 Jun, 2013 15:19
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#13
by
wolf_walker
on 26 Jun, 2013 17:35
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That's a part number, unless its a casting number masquerading as a part number. Germans do that sometimes.
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#14
by
RabbitJockey
on 27 Jun, 2013 12:12
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i have a 1.5 yellow dot pump on my 1.6 rabbit and it runs fine.