Fuel economy D1 cux versus gems

[best4x4]

On the 14CUX setup I first slapped the Volvo Injectors in. I noticed no issues driving on the highway. It was only when cruising thru neighborhoods or moving under 40MPH that the CEL came on, and when I checked the LED read out I had injector faults. 34/36 if I remember correctly. I reset the faults, and highway driving no issues once again, but driving around neighborhoods or parking lots = bingo 34/36 again (I never noticed it having any issues from the drivers seat). I did some talking with a friend who does a lot of Defender 14CUX work and he said to try the higher fuel pressure regulator from a VW/BMW (will look the P/N up). I ordered one, slapped it on, repeated the same type of driving conditions = those faults never came back.

Yeah I never had touched the fuel temp sensor when that 95 D1 decided to not start (not the same 95 I did the injectors on btw). It was a 95 I got F&*^*d over on.... I just got it running, and stopping in time to send it off to be parted out due to no title status....... Only to have the dude I bought it from (same guy that sold the rusty RRC that Metallica band member supposedly owned......) message me like 2 days after it went off for scrap oh I found the rebuilt title.... To little to late... it went off heaven and I wiped my hands clean of that D1!

My 94 RRC had the little schrader valve, but only because I switched the rail from a D1 lol. The higher PSI fuel pressure regulator should work on any 89-95 14CUX and any D1 without AEL say 96-97 (97 was a split non AEL/AEL year so ya gotta verify what ya got under the hood). I haven't found one for the threaded style fuel pressure regulator on 97-99 AEL equipped D1's.

Fuel Pressure Regulator PN = PR60 44PSI the OEM P/N should be a PR80 38PSI

 

[DiscoClay]

It was a 95 I got F&*^*d over on.... I just got it running, and stopping in time to send it off to be parted out due to no title status....... Only to have the dude I bought it from (same guy that sold the rusty RRC that Metallica band member supposedly owned......) message me like 2 days after it went off for scrap oh I found the rebuilt title.... To little to late... it went off heaven and I wiped my hands clean of that D1!

#Sad, #SaveOurDiscos ;-D It's sad to learn of yet another 1st year NAS heading to the boneyard. I heard guys saying they have/had 94 NAS D1's but Rover says they didn't offer them until 95 (the only NAS pre-GEMS Disco) and I wonder if those are actually early arrival 95's? Either way, there are not many 14cux NAS rigs any more. Mine is an R380 with blessedly manual seats.

My 94 RRC had the little schrader valve, but only because I switched the rail from a D1 lol.

Yeah, that's funny: them excluding it on the RRC. You'd think the belt, boots, and jewelry would be the same.

The higher PSI fuel pressure regulator should work on any 89-95 14CUX
Fuel Pressure Regulator PN = PR60 44PSI the OEM P/N should be a PR80 38PSI

Sweet, so to confirm: that PR60 unit is a BMW part number and it's the same physical/mounting/plumbing configuration?

 

[DiscoClay]

Huh, I never thought to look for an adjustable regulator because of that damned o-ring & nipple fitting. I'm sure it's got an ANSI/SAE name but I don't know what it is... That said, I just found a chinese cheapo regulator with an adapter that looks suspiciously like the nipple & mount plate, on amazon (https://www.amazon.com/BAGARAATAN-Universal-Adjustable-Regulator-Connectors). I have attached a pic with it in there, middle lower right.

I may have to give it a go.

 

[best4x4]

#Sad, #SaveOurDiscos ;-D It's sad to learn of yet another 1st year NAS heading to the boneyard. I heard guys saying they have/had 94 NAS D1's but Rover says they didn't offer them until 95 (the only NAS pre-GEMS Disco) and I wonder if those are actually early arrival 95's? Either way, there are not many 14cux NAS rigs any more. Mine is an R380 with blessedly manual seats.

Yeah, that's funny: them excluding it on the RRC. You'd think the belt, boots, and jewelry would be the same.


Sweet, so to confirm: that PR60 unit is a BMW part number and it's the same physical/mounting/plumbing configuration?

The 95 D1 that went to heaven was clinically dead when I got it. Dude let a friend have it, ripped entire brake system out (dude was clueless), and it was a rust bucket ( was lied to about the rust.....). I tried to make it into a trail truck, so I got it running, restored the brakes back to OEM setup, and it ran and drove. However I waited nearly a year for a title that never came, I was tired of it sitting vs continuing with making it into a trail truck, dude needed a good 3.9L so I sold the entire thing at a loss, but at least it's parts live on in other LR's.

Yes it's a BMW/VW part. Exact same config as the LR unit 100% PNP (plug n play). My 97 non AEL is sporting one as we speak.

Yeah when I slapped a 4.6L P38 V8 into my 95 I did a HUGE combo of parts. It retained the 14CUX wiring harness/config, however I used the GEMS 4.6L Plenum, TPS, IAC, GEMS PCV config, GEMS brake booster line, and a GEMS line for the EVAP . Then I used D2 Bosch Valve Covers to move the oil filler to the other side by the alternator as it was always in the way of the darn top coolant hose. My friend made custom harnesses that connected the 14CUX TPS & IAC to the GEMS hardware so the 14CUX harness wasn't cut or modified in any way. Worked like a charm and it was cool as it all looked and functioned like OEM. Kinda the best from 14CUX/GEMS/Bosch.

Yeah that does look like it could mount onto our fuel rails.

 

[Jimmy]

I heard guys saying they have/had 94 NAS D1's but Rover says they didn't offer them until 95 (the only NAS pre-GEMS Disco) and I wonder if those are actually early arrival 95's? Either way, there are not many 14cux NAS rigs any more. Mine is an R380 with blessedly manual seats.

Um, what? 1994 here... R380, manual seats, and no sunroofs.

 

[DiscoClay]

Um, what? 1994 here... R380, manual seats, and no sunroofs.

Sorry Jimmy! you are the guy I was thinking of but I didn't rem your username
You have the [IMO] holy grail of RV8 D1's: the most De-Lucased, anti-rust, most reliable configuration of any NAS disco...*ever.

No sunroofs, manual tranny & seats; the only things missing are window cranks and a carburetor!

*In Fantasy Football fashion, I will add: The Navistar Powerstroke HS2.8VNT was never offered in a Rover, nor is it EPA "certified", but I can say it is the best rover-derived engine [IMO] ever and if it were, it would take top spot

 

[KingKong8247]

Sorry Jimmy! you are the guy I was thinking of but I didn't rem your username
You have the [IMO] holy grail of RV8 D1's: the most De-Lucased, anti-rust, most reliable configuration of any NAS disco...*ever.

No sunroofs, manual tranny & seats; the only things missing are window cranks and a carburetor!

*In Fantasy Football fashion, I will add: The Navistar Powerstroke HS2.8VNT was never offered in a Rover, nor is it EPA "certified", but I can say it is the best rover-derived engine [IMO] ever and if it were, it would take top spot

I recently picked up a 94 here in NJ. R380, manual seats, sunroofs and a bunch of rust

 

[DiscoClay]

I recently picked up a 94 here in NJ. R380, manual seats, sunroofs and a bunch of rust

Nice!

Its an exceptionally rare beast

Grok gives a nice overview:

The story behind the 1994 NAS (North American Specification) Land Rover Discovery involves a bit of an anomaly in the timeline of its introduction to the U.S. market:

• Early Introduction: While the official launch year for the NAS Discovery in the U.S. is often cited as 1995, there were indeed vehicles sold in late 1993/early 1994 that are sometimes referred to as 1994 models. These were part of an initial batch intended for the U.S. market.
• Model Year Overlap: The automotive industry often introduces new models towards the end of the calendar year with the next year's model designation. Thus, cars built in late 1993 could be sold as 1994 models, even though the model year officially starts in January. This practice can lead to a situation where cars built in the latter part of one year are considered models of the following year for sales purposes.
• Documentation and VINs: The 1994 NAS Discoveries would have Vehicle Identification Numbers (VINs) that correspond to the 1994 model year. This is why they are recognized as such by owners and collectors despite the official marketing starting later.
• Production and Sales: Land Rover might have begun producing these vehicles in 1993 with the intention of having them available for sale in the U.S. at the end of that year or very early 1994. This timing would allow dealers to have stock ready for the model's introduction, which was marketed as the 1995 model year, but due to production schedules and market entry strategies, some were sold as 1994 models.
• Modifications: These early models would have all the necessary modifications for the U.S. market, including dual airbags, which were added to comply with U.S. safety standards. They would also have come equipped with the 3.9-liter V8 engine.
• Collector's Item: The 1994 NAS Discovery models are indeed rare and sought after by collectors because they represent the very first introduction of the Discovery to the U.S. market, even though officially, the launch was marketed for the 1995 model year.

 

[best4x4]

I remember the HUGE party LR San Antonio had in 94 when the D90 & D1 came to the US. The 94 La Ruta Maya An Expedition of Discovery was also a big part of the party. I am lucky enough to have an actual patch from the event which I got from the party for answering questions the Service Advisor asked me about the 94 Land Rover Discovery.

All the 95 D1's I've ever owned had manufacturing dates of 94. I currently have a white 95 D1 and I'll probably get some La Ruta Maya stickers made for it.

La Ruta Maya LR Discovery

 

[DiscoClay]

Yeah. Mine too.. I think it's build date is Sept 94 but I don't remember exactly. I was referring to model years rather than build dates

How cool was THAT party? It was the dawn of a new era for Land Rover and it was looking pretty great from a NAS perspective!

*imo: it didn't ultimately work out that well, with LR's core identity watered down to nothing but a tincture of it's epic history ...but then we have no idea what the future holds in the moment, and that was a very cool moment!

 

[DiscoClay]

The 95 D1 that went to heaven was clinically dead when I got it. Dude let a friend have it, ripped entire brake system out (dude was clueless), and it was a rust bucket ( was lied to about the rust.....). I tried to make it into a trail truck, so I got it running, restored the brakes back to OEM setup, and it ran and drove. However I waited nearly a year for a title that never came, I was tired of it sitting vs continuing with making it into a trail truck, dude needed a good 3.9L so I sold the entire thing at a loss, but at least it's parts live on in other LR's.

Yes it's a BMW/VW part. Exact same config as the LR unit 100% PNP (plug n play). My 97 non AEL is sporting one as we speak.

Yeah when I slapped a 4.6L P38 V8 into my 95 I did a HUGE combo of parts. It retained the 14CUX wiring harness/config, however I used the GEMS 4.6L Plenum, TPS, IAC, GEMS PCV config, GEMS brake booster line, and a GEMS line for the EVAP . Then I used D2 Bosch Valve Covers to move the oil filler to the other side by the alternator as it was always in the way of the darn top coolant hose. My friend made custom harnesses that connected the 14CUX TPS & IAC to the GEMS hardware so the 14CUX harness wasn't cut or modified in any way. Worked like a charm and it was cool as it all looked and functioned like OEM. Kinda the best from 14CUX/GEMS/Bosch.

Yeah that does look like it could mount onto our fuel rails.

It looks like the only thing missing is a Tornado chip

 

[best4x4]

Yeah I never did get a set of chips for it, but I did have it running on a 4.2L V8 ECU