If this is your first visit, be sure to
check out the FAQ by clicking the
link above. You may have to register
before you can post: click the register link above to proceed. Registration to this Forum is open to Members of The Stag Owners Club (SOC) and Affiliated Overseas Clubs. Non members with an interest in the Triumph Stag may avail of a 30 day trial membership of the Forum. Details in the FAQ section. Registration is not necessary if you just wish to view the forums. To start viewing messages,
select the forum that you want to visit from the selection below.
Welcome back. A number of us have fitted Multipoint EFI as it offers better performance as well as drivability and economy. Single point (throttle body injection) offers marginal performance advantage as it uses the existing restrictive inlet manifold. EFI installation is complex, extra fuel pump, return lines, sensors, ECU,wiring loom, possibly crank sensors and mapped ignition. Multipoint is the way to go which is why all car makers have dropped the single point injection. Stagdad’s Multipoint kits will be the system to use.
I have just today got my 4th Stag engine running on efi.
They are all multi point systems using home built inlet manifolds, two on full engine management, two on ex Rover SD1 injectors and electrics and original distributors (like the one I am currently working on)
I have also run a couple of Stag engines on systems retaining the original inlet manifold although these were also multi point systems, but to be honest apart from losing the choke there was nothing to be gained over a good carb set up hence the move to fabricated inlet manifolds.
Neil
Neil
TV8, efi, fast road cams and home built manifolds. 256bhp 240lbft torque
Welcome back. A number of us have fitted Multipoint EFI as it offers better performance as well as drivability and economy. Single point (throttle body injection) offers marginal performance advantage as it uses the existing restrictive inlet manifold. EFI installation is complex, extra fuel pump, return lines, sensors, ECU,wiring loom, possibly crank sensors and mapped ignition. Multipoint is the way to go which is why all car makers have dropped the single point injection. Stagdad’s Multipoint kits will be the system to use.
Bit early for April fools John. A kit of that complexity and fabrication time scale just wouldn't be viable. Totally agree if you are going to put the effort in to fit all the other bits don't stop short by using the old inlet manifold.
Thanks for the feedback. The reason I asked about the throttle body is because I read about someone fitting it in the SOC magazine but can't find it now. Another factor is that these come relatively cheaply to me because I import containers full of customers parts from the USA about every two months so I have no shipping cost.
Another factor is I have five 67/68 Mustang fastbacks in various stages of restoration from just starting to just finished and if it didn't work on the Stag I could put it on one of these.
We are around 70% along the way with my Stag restoration. My wife wants to be using it almost as a daily so I have converted it from manual to auto (I can hear the groans now) and I will fit EFI of some description. It won't be sold, I have had it nearly 34 years!
thats a beautiful piece of work Mike - stop getting distracted!
I'll try!
I'm surprised no one else has had a go with the individual throttle bodies, however to be fair it isn't the easiest conversion to EFI and fabricating/machining the individual manifolds was really hard!
I keep walking past it in my garage and still stop and spend some time trying to work out the best way of completing the throttle linkage to all 8 throttle bodies.
I've found an Australian company that specialises in EFI components and I do need to get on and order a few things for the linkages.
Last few years has been difficult, my youngest (9) been seriously ill in 2017 (Okay now presently), and myself moving job early last year, has taken off the focus a bit, and a couple of new cars to the stable too!
I'll try!
I'm surprised no one else has had a go with the individual throttle bodies, however to be fair it isn't the easiest conversion to EFI and fabricating/machining the individual manifolds was really hard!
I keep walking past it in my garage and still stop and spend some time trying to work out the best way of completing the throttle linkage to all 8 throttle bodies.
I've found an Australian company that specialises in EFI components and I do need to get on and order a few things for the linkages.
Last few years has been difficult, my youngest (9) been seriously ill in 2017 (Okay now presently), and myself moving job early last year, has taken off the focus a bit, and a couple of new cars to the stable too!
Mike,
Whilst researching for another project, I came across this linkage kit on the Jenvey website - any use, or at least does it spark any ideas?
As far as I can tell there is no Stagweber setup? I see Chris has put some very scant details on facebook but that's about as far as it seems to have gone so far - nothing on his website where you would expect him to be advertising it, if it was anywhere near ready
Paul - 3 projects, 1 breaker - garage built and housing 2 white Stags. One runs, one doesn't
Comment