[1carnut]

I had the car out today in the fall colors. Here are some pictures and a Youtube video link for some of the drives today

Ecoboosted Lamborghini Jalpa First Drive Video

I have posted some other videos on my YouTube channel- 1carnut

 

[1carnut]

The 2022 Italian Happening in Detroit was a great success today. Jalpa 370 got first place for Lambos at the show. There was a beautiful White Espada that was immaculate. Simply amazing car. Two newer hurracan’s from the local dealer were also there. More fall color shots.

Freeway driving the Ecoboost is great. Plenty of reserve to pull faster and faster. Top off Fall season driving is awesome.

 

[Raging Soul]

Hi John, Congrats on get the car for the Happenings..

Great chatting with you and thanks for sharing the insight on the build. A very impressive accomplishment!

all the best
RS

PS I can’t figure out how to post up the short vid 😊

 

[1carnut]

It was great meeting you at the show Raging Soul. Thanks for the kind words. Looking forward to the next get together. Just had one last Jalpa blast today. It was 30 degrees with a windchill of 23F, we took the Lambo for a spin through the Wayne County Lightfest in Detroit- and we did it topless. With the new engine and alternator, the cars lights were bright, and the heater blower was spinning nicely on high. Happy Holidays to all in Jalpa Land.

 

[Lee T]

Congrats on finishing that monster of a project. Sometimes I want to yank the Jalpa motor out and build from scratch something else. It is so frustrating getting work done on the block. Aluminum is porous as hell and the cams being hard mounted in the heads make it very problematic. I should be done setting up my new shop in about 2 weeks and plan to start on the motor. Good luck. The only problem is that once you finish this, you will crave another project. For me the quest is the most fun. Lee

 

[1carnut]

Some day I hope I can use the words “I should be done setting up my new shop in about 2 weeks”. That will definitely help with your project.

Thanks for the words of support during my build. I think a Jalpa is never truely finished. I went down a small project rabbit hole with a ash tray replacement box to mount my OBDII port. As soon as I finished the cover, and had it 3D printed, I decided I needed to change the 3.5 to a 2.3 to match my new displacement, so I will print one that says 2.3. I just might print the second version in Metal to see how that looks.

No lamborghini ashtrays were harmed in the making of this project.

 

[Lee T]

That looks great. Now you can punch out the ecoboost to 3.5 L and not have to change the symbols.

 

[1carnut]

Or I could just change the symbols. Here is the “final” cover installed unless I try to better colormatch/ paint / dye the cover. Jalpa 2.3 is now born with a check engine light and Accessible OBDII port

 

[Lee T]

Pretty Cool. Looks like you like to Fab as much as I do.

 

[Sledge4.2]

i like fab too, but i dont have the skills, props to both of you! I love this thread please post more and Lee get on with your updates too!!!

 

[1carnut]

Good to have you still stopping by the Jalpa forum. I hit a roadblock and am asking for help from all the people in Jalpa land. I cannot get my tach to fire. Yes it worked with the old engine, never had any problems. I have spent hours researching Jaeger tachs, checking the forums, etc. Here is the problem—

Obviously I have a four cylinder PCM controlled engine in the car now
Unfortunately there is no PCM output for tach
I bought a Split Second tach adapter (switchable output for signal multiplication)
I made a jumper to elegantly splice into the coil signal on the PCM
Set the dipswitches in the tach adapter to multiply the signal
I cant get my tach to register.

Does anyone have a scope trace of what the tach signal from the Bosch CDI ignition module looks like on a working Jalpa, or a scope trace on the tach signal (brown wire) in the dash? Specifically Is it outputing 12V wave or a higher voltage signal?. There is some mention on the Porsche forums (early cars used a version of our CDI module) about higher voltages on some tach. So before I buy a different tach adapter with a higher voltage output, or before I start adding pullup resistors to “improve” the converted signal, or before I send the tach to Palo Alto Speedometer for a conversion and restoration, I wanted to check with the experts here? Any thoughts.

I dont quite have the courage to hook up the takeout OEM engine with the takeout OEM bosch CDI module, and try to momentarily run the engine on my engine stand just to get an idea of what the tach signal is. I’d rather buy a couple more tach adapters and play with pull up resistors, then to go through that trouble. Although it would be epic as to run a Jalpa engine with no exhaust manifolds.

Thoughts and advice is welcome.

 

[Sledge4.2]

you are out of my league my man, the only advice i can give is to call palo alto speedometers. They rebuilt my jaegermeister units, and were incredibly knowledgable in how these instruments work.

 

[Sledge4.2]

you are out of my league my man, the only advice i can give is to call palo alto speedometers. They rebuilt my jaegermeister units, and were incredibly knowledgable in how these instruments work.

 

[raymond]

The tacho is a wave signal, the MSD Box output doesn't fit therefore you need the tacho adapter, the original signal from the distributor worked.

 

[Lee T]

There is a guy in New York that can make any Jaeger tach work with anything. Check my old posts . He rebuilds, modifys and works on all jaegar.

 

[1carnut]

Thank you guys, checking on both of those suggestions.

 

[Laust]

I have not put a scope on my Jalpa tachometer, but had an easy transition (tachometer-wise) when converting from the Bosch CDI box to Electromotive’s TEC3 unit, which I believe is a 0-12V square wave.

I had some trouble with my Espada tachometer, but found D&M Restorations Tachometer Repair and Restoration in South Carolina who replaced the internals, so it worked well with Electromotive’s TEC3r unit. I am sure they could be helpful to you too.

A small detail to watch out for on the Jalpa Tachometer is the OE plastic needle, which over time bends up to (and interferes with) the glass. It can be upgraded to a lightweight aluminum needle.

 

[1carnut]

Thanks for all of you suggestions, after trying three tachometer adapters, I will be sending mine out for rebuilding / retrofitting as nothing is driving the tach. Here is what I have tried, and here are some of the oscilloscope traces—-

Split Second Tach adapter- outputs either a 5V or 12V square wave with cylinder multiplication options

TachAdapt- outputs either a 12V square wave or by pulling jumper, a 24V square wave with cylinder multiplication options

DIY Auto HV tach adapter- outputs a higher voltage non square wave

 

[1carnut]

12V square wave from tach-adapt box as well as split second adapter that did not drive the tach

 

[1carnut]

24 Volt square wave from the tach-adapt box that did not drive the tach