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WD-40
Samba Member
Joined: May 31, 2006
Posts: 1178
Location: Iowa
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 Posted: Wed Sep 19, 2018 9:24 pm Post subject: "AJ" Engine cases without fuel pump provisions? |
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Cruising Craigslist tonight, I came across this engine:
It's an "AJ" block, which the list in the technical section describes as:
| Quote: |
| AJ 1975-79 1600cc 50bhp DIN, 48HP SAE-net. Fuel Injected. |
Note the lack of machining/provisions for a mechanical fuel pump. I had never seen this before. Was this unique to the Type 1 "AJ" blocks, and just for those couple of years?
I looked for reference photos for other fuel-injected engines, such as the "U0" engine code:
| Quote: |
| U0 1968-1973 1600cc - fuel injected for USA |
... but it appears as though the fuel-injected Type 3 retained it, and utilized an adapter on an oil pump-like base to provide crankcase breather fittings.
Even the later "1600i" fuel injected engines from Mexico retained the fuel pump studs, and used them on a fuel pump shaped stand to support the revised 4-tube intake manifold.
(additional photo in this document: http://www.vw-beetles.org/Files/Info/BtlMexTechnicalandDiagnostics1.pdf)
The engine on Craigslist has some questionable changes (such as replacing all of the head intake/exhaust studs with bolts), so I initially wondered if they had just not yet pulled the tape covering the hole off after painting. I did some searching though, and found this photo in the classifieds of another "AJ" engine, which also appears to not have mechanical fuel pump provisions.
I also found this AJ case on eBay... can't get any more clear of a photo than that.
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KTPhil 
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Joined: April 06, 2006
Posts: 34012
Location: Conejo Valley, CA
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| Posted: Wed Sep 19, 2018 9:33 pm Post subject: Re: "AJ" Engine cases without fuel pump provisions? |
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| WD-40 wrote: |
U0 1968-1973 1600cc - fuel injected for USA
... but it appears as though the fuel-injected Type 3 retained it, and utilized an adapter on an oil pump-like base to provide crankcase breather fittings.
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FYI, that device on the Type 3 FI engines was used for the Auxiliary Air Regulator (AAR), a warmup device that provided extra air at cold temps to raise and stabilize the idle when cold. It does not play a role in crankcase breathing; the bimetallic coil spring sits inside to react to oil temp, but it does not pass any crankcase air.
Last edited by KTPhil on Thu Sep 20, 2018 10:44 pm; edited 1 time in total |
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modok
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Joined: October 30, 2009
Posts: 26787
Location: Colorado Springs
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| Posted: Thu Sep 20, 2018 12:47 am Post subject: Re: "AJ" Engine cases without fuel pump provisions? |
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I don't really keep track of engine code letters.
They were late 70's, German made, as21 alloy, FI, probably were all in bugs because.......that's pretty much the vehicle they made at that time with this kind of engine.
Probably don't see many today because they are all hoarded or blowed up already. I have three of them myself. |
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jpaull
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Joined: February 22, 2005
Posts: 3465
Location: Paradise, Ca
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| Posted: Thu Sep 20, 2018 4:11 am Post subject: Re: "AJ" Engine cases without fuel pump provisions? |
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I would be very skeptical of the type of work coming from someone who paints a engine like that and then takes a picture advertising it for sale.
Its like they decided to sell it 2 hours ago, hosed it off, sprayed paint over everything in sight, and took a picture listing it on craigslist before the paint is even dry. I hope the engine is not more then $100, and hope they are not advertising this as "rebuilt". |
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Lingwendil
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Joined: February 25, 2009
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Location: Antioch, California, a block from the hood
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Slow 1200
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Joined: July 02, 2004
Posts: 2105
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| Posted: Thu Sep 20, 2018 7:25 am Post subject: Re: "AJ" Engine cases without fuel pump provisions? |
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| WD-40 wrote: |
Was this unique to the Type 1 "AJ" blocks |
yes
| WD-40 wrote: |
and just for those couple of years?
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79-75=4  |
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mark tucker
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Joined: April 08, 2009
Posts: 23937
Location: SHALIMAR ,FLORIDA
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| Posted: Thu Sep 20, 2018 12:26 pm Post subject: Re: "AJ" Engine cases without fuel pump provisions? |
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| wow thats purdy!!! I wouldent wory about the fool pump boss if I needed it I would just machine it for one. |
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Olli from NJ
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Joined: May 10, 2007
Posts: 302
Location: Milton,DE
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| Posted: Thu Sep 20, 2018 1:09 pm Post subject: Re: "AJ" Engine cases without fuel pump provisions? |
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Sure looks like a broken fin on the 3/4 head.
Olli |
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mcdragracer
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Joined: December 30, 2007
Posts: 714
Location: Cally
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| Posted: Thu Sep 20, 2018 1:37 pm Post subject: Re: "AJ" Engine cases without fuel pump provisions? |
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| Looks like could be a used motor they painted all silver, looks real fancy though! |
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Ebel
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Joined: June 07, 2015
Posts: 564
Location: New york
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| Posted: Thu Sep 20, 2018 4:04 pm Post subject: Re: "AJ" Engine cases without fuel pump provisions? |
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| It’s a rattle can rebuild. Happens with machining tools too. Usually not worth what they want. |
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Zundfolge1432
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Joined: June 13, 2004
Posts: 12467
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| Posted: Thu Sep 20, 2018 7:19 pm Post subject: Re: "AJ" Engine cases without fuel pump provisions? |
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| mark tucker wrote: |
| wow thats purdy!!! I wouldent wory about the fool pump boss if I needed it I would just machine it for one. |
Once upon a time we did that. Case all the same inside and weld a tit on case for another stud. Can’t verify but heard rimco did this as well but that was eons ago. |
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Glenn
Mr. 010
Joined: December 25, 2001
Posts: 76937
Location: Sneaking up behind you
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| Posted: Thu Sep 20, 2018 7:25 pm Post subject: Re: "AJ" Engine cases without fuel pump provisions? |
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| Slow 1200 wrote: |
| 79-75=4 |
75, 76, 77, 78 and 79 = 5 years 
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Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
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Rome
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Joined: June 02, 2004
Posts: 9651
Location: Pearl River, NY
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| Posted: Thu Sep 20, 2018 7:59 pm Post subject: Re: "AJ" Engine cases without fuel pump provisions? |
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| Quote: |
| Busted fins, head bolts, etc |
Some of the "etc" would be a flat plate oil pump cover instead of the original one with edges for strength; bolts to attach the oil pump & cover instead of studs and nuts, the cast-in "ear" at the lower right bottom of the case for attaching the sled tin with the M6 screw is broken off. No case seam sealant smear/snot which most people don't wipe off after a rebuild implies the case was not apart just prior to the silver painting.
The now better-informed buyer beware. |
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VW_Jimbo
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Joined: May 22, 2016
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Location: Huntington Beach, CA
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| Posted: Thu Sep 20, 2018 8:48 pm Post subject: Re: "AJ" Engine cases without fuel pump provisions? |
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Looks like the 8mm top rear stud, on the case seam, is pulling. Just a few too many threads showing. Makes it hard to read the case number.
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Jimbo
There is never enough time to do it right the first time, but all the time necessary the second time!
| TDCTDI wrote: |
| Basically, a whole bunch of fuckery to achieve a look. |
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GFY's Xevin and VW_Jimbo!  |
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WD-40
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Joined: May 31, 2006
Posts: 1178
Location: Iowa
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| Posted: Thu Sep 20, 2018 8:50 pm Post subject: Re: "AJ" Engine cases without fuel pump provisions? |
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| KTPhil wrote: |
| FYI, that device on the Type 3 FI engines was used for the Auxiliary Air Regulator (AAR), a warmup device that provided extra air at cold temps to raise and stabilize the idle when cold. It does not play a role in crankcase breathing; the bimetallic coil spring sits inside to react to oil temp, but it does not pass any crankcase air. |
Aha! That makes more sense! I was trying to figure out why there were two hoses going to the "breather". Thanks for the correction.
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ach60
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Joined: May 14, 2001
Posts: 4139
Location: Santa Maria
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| Posted: Thu Sep 20, 2018 8:54 pm Post subject: Re: "AJ" Engine cases without fuel pump provisions? |
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The only problem I see is that it's missing the GEX Sticker
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WD-40
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Joined: May 31, 2006
Posts: 1178
Location: Iowa
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| Posted: Thu Sep 20, 2018 9:01 pm Post subject: Re: "AJ" Engine cases without fuel pump provisions? |
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| jpaull wrote: |
| Its like they decided to sell it 2 hours ago, hosed it off, sprayed paint over everything in sight, and took a picture listing it on craigslist before the paint is even dry. I hope the engine is not more then $100, and hope they are not advertising this as "rebuilt". |
But look at how they masked and two-tone painted the oil pressure sender! That's attention to detail right there! 
| Lingwendil wrote: |
| Lot of red flags on that engine. |
| Olli from NJ wrote: |
| Sure looks like a broken fin on the 3/4 head. |
| mcdragracer wrote: |
| Looks like could be a used motor they painted all silver, looks real fancy though! |
| Ebel wrote: |
| It’s a rattle can rebuild. Happens with machining tools too. Usually not worth what they want. |
| Rome wrote: |
| Quote: |
| Busted fins, head bolts, etc |
Some of the "etc" would be... |
| VW_Jimbo wrote: |
| Looks like the 8mm top rear stud, on the case seam, is pulling. |
Don't worry, I wasn't going to buy it. I just found the case interesting.
The posting is gone now, but I believe it was $600, and if that didn't scare you away, it had an awkward and concerningly worded "as-is" disclaimer in the post. I should have saved a screenshot.
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WD-40
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Posts: 1178
Location: Iowa
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| Posted: Thu Sep 20, 2018 9:03 pm Post subject: Re: "AJ" Engine cases without fuel pump provisions? |
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Here's the other angle, since you guys are having so much fun with this.
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vince1
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Location: Burgundy, France
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WD-40
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Joined: May 31, 2006
Posts: 1178
Location: Iowa
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| Posted: Fri Sep 21, 2018 10:13 pm Post subject: Re: "AJ" Engine cases without fuel pump provisions? |
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The Craigslist ad was reposted!
| craigslist wrote: |
v w bug motor - $600
have a 74 and up bug long block for sale 1600 duel port fuel injection. new push rod seals , heads cleaned and tested, valves adjusted o5, bearings ok, new rods bearings ,new plugs, new lifters,new sump screen , rear seal, no leaks, crank filled with 30 wt. oil, motor sold as is as seen, with no returns. cash only. |
So yes, it has been rebuilt...
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