Aftermarket injectors

[furgo]

I recently saw a mention of these new (not NOS) aftermarket injectors for buses (L-Jetronic) on a thread:

Standard Motor Products (SMP) FJ6 injectors (*)

This picqued my curiosity, as previously I thought no one made such injectors anymore, and that the only option was either to recondition old Bosch injectors or to get hold of some NOS ones. Also, I'm not sure if SMP is the maker or a reseller.

I could not find any information online about their specs on the SMP site to compare them with the stock injectors (**), so I was wondering if someone had had any experience (good or bad) with them.

But also on the more general topic: are there other known good aftermarket injectors that are still available?

(*) The picture here seems to be misleading, as on the SMP site they are blue injectors with the non-curved hose. Yet the SMP site has its own e-catalog thing that does not allow direct links to products, hence the Amazon link - the pic might not be accurate, but at least we get the price.
(**) The SMP catalog site has a vehicle check tool that tells me they'd be a fit for a '79 2.0L bus, though.
_________________
'79 Westy, P22 interior, FI 2.0 l Federal, GE engine (hydraulic lifters)

Decode your M-Plate

[raygreenwood]

[furgo]

Thanks Ray. Then also probably SMP is the only company making aftermarket injectors for the bus. I've read on other threads that Lucas made some injectors at some point too, but that was for Vanagons. Good to hear it's a well-established company, which hopefully shows in the quality of their injectors

When I first wrote the post, I had contacted SMP with an enquiry on the injector specs. Here's what they've just sent me:

[raygreenwood]

[furgo]

[ivwshane]

Anyone running these? Any more feedback on them yet?
_________________
77 westy 2.0 FI
69 ghia coup 1600dp
70 single cab

[furgo]

As this has been revived from another thread, here's some more info about part numbers:

Standard FJ634 - same form factor (and presumably) specs as OEM, L-Jetronic connector. Listed applications: Jaguar XJS (91-84), Nissan 300ZX (86-84), Nissan Maxima (86-85), Volkswagen Campmobile (74), Volkswagen Transporter (79-74), Volkswagen Vanagon (83-80)
https://www.standardbrand.com/en/ecatalog?partdetail=FJ634

Standard FJ697 - different pintle style and hose barb than OEM, L-Jetronic connector. Listed applications: Fiat 124 (83-80), Fiat Brava (81-80), Fiat Strada (82-80), Fiat X-1/9 (83-80), Lancia Beta (81)
https://www.standardbrand.com/en/ecatalog?partdetail=FJ697

Standard FJ6 - different pintle style and hose barb than OEM, curved hose, L-Jetronic connector. Listed applications: Porsche 914 (75-74), Volkswagen 412 (74), Volkswagen Super Beetle (76-75)
https://www.standardbrand.com/en/ecatalog?partdetail=FJ6

Echlin CRB218532 - same form factor (and presumably) specs as OEM, L-Jetronic connector. Same OEM molded plastic color (teal), same OEM pintle cap style. Listed applications: none explicitly listed, but the NAPA website says: "Fits your 1979 Volkswagen Type 2"
https://www.napaonline.com/en/p/CRB218532 => Reportedly these are FJ6 injectors with the wrong picture on the online catalog
_________________
'79 Westy, P22 interior, FI 2.0 l Federal, GE engine (hydraulic lifters)

Decode your M-Plate

[cellobus1]

I have been running Sorensen injectors from Bus Depot for a couple years now and I haven't had any problems with them. The curved hose must be removed.
_________________
1976 unrestored daily driver Standard bus, "Stella"
formerly, 1959 Standard bus
formerly, 1973 transporter which was 4 years old when it taught me to drive

[furgo]

It looks like GP Sorensen is part of the SMP group. As it seems Bus Depot were/are selling the FJ6 injectors, the Sorensen ones are probably the same part.
_________________
'79 Westy, P22 interior, FI 2.0 l Federal, GE engine (hydraulic lifters)

Decode your M-Plate

[choogenboom]

Adding from my recent experience. I just bought "intermotor" by SMP FJ7 injectors as "new old stock" on ebay. They appear to be remanufactured and are marked with "d1620ba" which seems to be a Lucas part? Only one or two other hits on google for the part number and its all people like me asking "does anyone know what these are?". If you look close at the picture here https://www.standardbrand.com/en/ecatalog?partdetail=FJ7 you can see the same d1620ba part number. Maybe it was custom made for SMP and they are not sharing the detailed specs?

But good news is they worked well. I have a bit of a unique situation in that I have a 1971 Porsche 914 1.7L installed in a 1976 T2 bus. Best I can tell the 1971 1.7 engine was originally a D jet and the1975 2.0 bus engine was a L Jet and when the conversion was done they kept the original 1976 L jet system. The injectors that came with the bus are Bosch 0280150100 with a 185 cc/min spec flow rate. The FJ7 are spec'ed at 200 cc/min. I tuned the AFM (macro tune by removing cover and adjusting door clock spring preload, micro tune with mixture screw) using a CO meter and ears/nose to what seemed to be a happy mixture.

The FJ7 are listed as compatible with
Alfa Romeo Spider (89)
Jaguar XJS (91-84)
Triumph TR7 (81-80)
Volkswagen Beetle (79-75)
Volkswagen Campmobile (73-71)
Volkswagen Super Beetle (79-77)
Volkswagen Transporter (73-72)

If anyone has good specs on the d1620ba I would love to see them added here, thanks!

[metahacker]

the "nicest" injector you're going to find for a Jetronic bus would be the Bus specific Bosch EV14 injectors you can get from injector-rehab

https://injector-rehab.com/shop/kgparts-products/vw-fuel-systems/

i don't know why they don't have the Bus hose-end versions listed in the ecommerce store, they said they were available on the phone and those are the ones you want (the stock replacement hose-end EV14 not the fuel rail version)

they have the fuel rail version shown there..and i'm using those..but you don't want those. they don't fit as-is.. had to make a custom AN6 fuel line and use banjo fittings .. and tweak the tin in a couple spots with a hammer. i believe the rails used to fit, then they made a couple revisions based on Vanagon WBX people's feedback/confusion and changed to ORB fittings and ... well, everything got too big to fit and they haven't test fit them since making those changes. anyways. the hose end ones go in just like stock and are cheaper, no need to fool with the rail. no real advantage.

so, what you want is their custom hose end custom Bosch EV14 injectors that they make.
like these: https://injector-rehab.com/product/vw-vanagon-4-ho...-set-of-4/
but for Bus

if you are wondering what is so special about the EV14, check out this video and fast forward to 9:30

Link


as you can see, an OG injector is spraying a poorly atomized cone,
the replacement injectors are doing better,
but the EV14 is creating a super atomized fog ..

basically this is Bosch's most current/best design injector
and they can modify to be hose-end and install like stock Bus Jetronic

here's a much shorter videlo showing a quick comparison with the 914 injectors

Link

[raygreenwood]

[airkooledchris]

[metahacker]

i have the fuel rail configuration EV14 injectors from injector rehab
and yes it's all installed and running

i rebuilt the motor and it went on with that

i had to make some changes - replaced the 4 fittings (normally it has ORB-to-AN going to AN to 90º barb on each side) with a simple 6AN ORB banjo fuel line that goes straight into the rail...that was necessary to make it all fit, at all.

i would strongly recommend the EV14's from that company for any Type 4 Bus, but their special hose-end versions instead..those install 100% like stock...

no need to bother with the fancy fuel rail conversion... UNLESS one is doing something special, like a Turbo...where the ability to swap out different size off-the-shelf injectors would be very useful....in that case, the fuel rail is worth the extra effort... or if you want to convert the whole car to AN fittings, then they are great for that. (PS the rails come in anodized teal....eek. ;) )

as far as injectors go, the EV14 is a well known entity as this point, a recognized top modern injector design..most injector nerds would probably say the go-to best for the money?

as for detailed test results, just got the new build back together & haven't taken it on any trips yet

can report back later, but i am hoping for improved idle/ transitory mid-range e.g. responsiveness and smog test results

in theory, it could also improve cooling, since the intake fuel charge is a vital component of cooling in an air-cooled engine, and inhaling fog instead of a triangle stream could make for an improvement

none of it should be very dramatic but we'll see

and ray yes one has to bypass the resistor box for this. they are saturated injectors, not peak/hold like the old ones.

i bought a spare resistor box from ebay...and that cool ass homie airschooled Robbie had the connectors to rewire/repin the connector to just daisy chain everything together, so the 12V wire feeds all the connectors (like it was before, but without resistors in between). i believe one could also just cut their existing wires at the resistor connector and twist them together and put some electrical tape on it, if they want to do it "a la autozone parking lot" style. :) but that is essentially all that is happening.

[wrxnofx]

I bought these from Napa: https://www.napaonline.com/en/p/CRB218532

Their site says they don’t fit which is garbage. If memory serves I got the number off of Ratwell’s page.

The hose is that 90 degree elbow thing but you just straighten it out and stick it on the fuel rail which keeps it from kinking.

_________________
1977 VW Type 2 Bay Window Westy FI