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S4 Elan BDG
Posted:
Tue Aug 06, 2019 1:49 pm
by TomR
Well, finally fired up the Cosworth in the Elan. First time the car is capable of moving under its own power since about 2004! Sounds beautiful. Runs fine but the alternator's not charging and the CAI tach doesn't seem to recognize the Motec output.
Given I'm running a tiny Li battery I think I'll get the alternator working before driving it anywhere, and I still need to put new seals on the front AR brake calipers, but I'm crossing my fingers to get the car to LOG39 which is just 30 min from my house this year.
Wooooo...
TomR
Re: S4 Elan BDG
Posted:
Tue Aug 06, 2019 5:58 pm
by el-saturn
just to get some kind of reply (=question) tom: are BDGs the 2,0L jobs?? sandy
Re: S4 Elan BDG
Posted:
Tue Aug 06, 2019 6:06 pm
by Slowtus
el-saturn wrote:just to get some kind of reply (=question) tom: are BDGs the 2,0L jobs?? sandy
https://historicmotorsportcentral.com/2 ... bd-engine/
Re: S4 Elan BDG
Posted:
Tue Aug 06, 2019 6:08 pm
by Seamus
Re: S4 Elan BDG
Posted:
Tue Aug 06, 2019 6:50 pm
by Slowtus
Is there an echo in here...
Great minds click alike.
Re: S4 Elan BDG
Posted:
Tue Aug 06, 2019 7:46 pm
by disquek
That's great news!
Alt - check the energizer connection (the dash light).
Tach - likely your motec has both a high and low tach output option. Try the other!
-Kyle
Re: S4 Elan BDG
Posted:
Wed Aug 07, 2019 12:04 pm
by Certified Lotus
Tom, looking forward to seeing your car at LOG!
Re: S4 Elan BDG
Posted:
Wed Aug 07, 2019 12:48 pm
by TomR
Alternator was easy, a pin got pushed back into a plug housing that wasn't immediately obvious.
I haven't checked into the tach yet but I was thinking it was a setup issue as Kyle says. I'll take it to LOG without a tach if necessary - i'm not likely to exceed the redline on this engine!
Would have driven yesterday but the clutch wouldn't disengage. I just think the concentric slave needs to be bled which I'll do today.
Re: S4 Elan BDG
Posted:
Wed Aug 07, 2019 1:34 pm
by disquek
This thread needs pics ....
Re: S4 Elan BDG
Posted:
Wed Aug 07, 2019 2:12 pm
by TomR
Been playing with this build for a long time, plenty of pictures. My plan was to do a post-build thread once I know it is a success
But here is a recent pic of the engine swap twins.
Tom
Re: S4 Elan BDG
Posted:
Thu Aug 08, 2019 2:03 am
by Chrispy
I'm more interested in your LS1 MX-5!!
Re: S4 Elan BDG
Posted:
Thu Aug 08, 2019 1:25 pm
by TomR
I think that means you're on the wrong forum:-)
They are an interesting contrast. The Miata is 500kg heavier than the Elan but has nearly twice the HP. when I have them both sorted I'll probably choose between them and let one go.
Maybe use the proceeds to get a nice early original Elan for my old age...
Tom
Re: S4 Elan BDG
Posted:
Thu Aug 08, 2019 1:36 pm
by disquek
Have you weighed it with the BDG in it?
Mine weighed 1500 even with about 1/4 tank of gas.
-Kyle
Re: S4 Elan BDG
Posted:
Wed Aug 21, 2019 6:48 pm
by TomR
It's looking hopeful that i can indeed get the Elan to the LOG under its own power:-) Drove it a few miles this morning without walking or putting out fires (so much for postponing the heat shield). Just needs carprts and such now.
I'm not registered but expect to drive it up Saturday and park in the public lot of anyone wants to see it.
Cross your fingers!
Tom
Re: S4 Elan BDG
Posted:
Sat Aug 24, 2019 3:02 pm
by murt30097
The Motec output requires a resistor (to power I remember). I used a 1kohm resistor for my setup. Do a quick Google to confirm.
Paul