123 distributor

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Roger Eriksson
Posts: 1
Joined: Sun Jul 30, 2017 11:20 am
Sweden

123 distributor

#1

Postby Roger Eriksson » Sun Jul 30, 2017 11:58 am

I have installerad à 123 disributor in My E-type 4.2. It is the latest model 123 with bluetooth where you can insert the curve yourself. Which values are apropriate. I have vacum connected and crankshaft at 10 regress.

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christopher storey
Posts: 3769
Joined: Sun Mar 09, 2008 3:07 pm
Location: cheshire , england
Great Britain

Re: 123 distributor

#2

Postby christopher storey » Sun Jul 30, 2017 8:58 pm

Roger : welcome to the board. For the present, i should adopt the standard curve for the 4.2 engine . Here is a link to it in the knowledge base

https://www.dropbox.com/s/rh8ugx7prwcds ... s.pdf?dl=1

This is actually for the S2 4.2 but there is no difference from the S1 for European specification cars with 3 SU carburetters . You need to look at page P.Y.s.3 for the details. Please note that the speeds and the degrees shown are all distributor rather than engine speeds. Therefore, to get the crankshaft speed information, you need to multiply everything by 2 . so that e.g. 2 -4 degrees at 650 rpm is 4 - 8 degrees at 1300 engine rpm, and 6.5 - 8.5 degrees at 1250 rpm is 13 to 17 at 2500 crank rpm and to all the figures shown you need to add also the static timing before Top dead centre ( usually 9 degrees crankshaft BTDC for 8:1 Compression, and 10 degrees BTDC for 9:1 cars) )

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juicerider
Posts: 47
Joined: Tue Oct 20, 2015 1:15 am
Location: Perth WA
Australia

Re: 123 distributor

#3

Postby juicerider » Wed Aug 02, 2017 1:16 pm

Yeah nice distributor, I put one on mine too.
Is your tachometer still accurate?
I had to also fit an RVI to RVC conversion board, so that it read correctly, but now it's more accurate than it was originally.

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