Replacement distributor options - Alfa Romeo Forum
You are currently unregistered, register for more features.    
 
Thread Tools
(Post Link) post #1 of 13 Old 09-04-09 Thread Starter
Status: -
AO Member
 
Cosmo's Avatar
 
Join Date: Jul 2006
Location: Surrey, England
Posts: 480
Images: 3
Replacement distributor options

I have a 1750 engine in my 68 Spider and the springs in the dizzy are broken and the posts that they attach to are bent so I need to sort it out. I'm thinking of the following options.
  1. Fix up my old distributor as standard or possibly with different springs/weights.
  2. New Bosch distributor with a remapped advance curve for modern fuel and fast road driving.
  3. A 123 electronic distributor with the settable advance curves.
  4. Lock my broken distributor and use something like a Megasquirt to program my own advance curve.

Options one & two look to be the simplest route - just bolt it up and set the timing, although a home brewed spring/weight set up may need some fine tuning. I like the accuracy of the 123 set up but I've heard that the supplied advance curves are not optimal for modern fuels. The last option may be somewhat cheaper but I suspect it might be a world of pain to set up correctly. Driving is mostly for fun on the road with a little track day action and I would also want to throw in a MSD-6AL or similar in the near future.

Any thoughts?
_______________
Cosmo is offline  
Sponsored Links
Advertisement
 
Status: -
AO Member
 
alfalevel's Avatar
 
Join Date: Aug 2008
Location: Australia
Posts: 33

Member car:

GTV 1985 2.0

Re: Replacement distributor options

Maybe..this, I'm looking at this Alfa Romeo Parts and Alfa Romeo Spares from EB Spares - Specialist Alfa Parts Dealers looks and reads great I presume you are in the UK? I want one, maybe for my GTV 2ltr.
alfalevel is offline  
Status: -
AO Member
 
alfalevel's Avatar
 
Join Date: Aug 2008
Location: Australia
Posts: 33

Member car:

GTV 1985 2.0

Re: Replacement distributor options

Sorry, you are UK. I lived in Fetcham near Leatherhead years ago, where are you in Surrey?
Cheers, Richard.
alfalevel is offline  
Status: -
AO Member
 
Mound Dawg's Avatar
 
Join Date: Apr 2006
Location: United Kingdom
Posts: 346
Images: 1
Re: Replacement distributor options

Have you spoken to Max?
Mound Dawg is offline  
(Post Link) post #5 of 13 Old 09-04-09 Thread Starter
Status: -
AO Member
 
Cosmo's Avatar
 
Join Date: Jul 2006
Location: Surrey, England
Posts: 480
Images: 3
Re: Replacement distributor options

Quote:
Originally Posted by alfalevel View Post
Maybe..this, I'm looking at this Alfa Romeo Parts and Alfa Romeo Spares from EB Spares - Specialist Alfa Parts Dealers looks and reads great I presume you are in the UK? I want one, maybe for my GTV 2ltr.
If you mean the distributor with the adjustable advance curve then that is actually made by 123ignition, as in my option 3 above. I have now found a further option as a variation of 4 - lock the distributor and use the programmable variant of the MSD 6AL ignition. But that only seems to offer 25* of maximum advance, not the +30* that you really need for the Alfa engine.

I'm not so far away from Leatherhead, in Farnham.
Cosmo is offline  
Status: -
AO Member
 
alfalevel's Avatar
 
Join Date: Aug 2008
Location: Australia
Posts: 33

Member car:

GTV 1985 2.0

Re: Replacement distributor options

Hi Jim, I would appreciate any ideas for an electronic ignition for my GTV?
cheers, Richard.
alfalevel is offline  
Status: -
AO Member
 
alfalevel's Avatar
 
Join Date: Aug 2008
Location: Australia
Posts: 33

Member car:

GTV 1985 2.0

Re: Replacement distributor options

Ok thanx cosmo for the heads up.
Cheers, Richard.
alfalevel is offline  
Status: -
AO Member
 
alfalevel's Avatar
 
Join Date: Aug 2008
Location: Australia
Posts: 33

Member car:

GTV 1985 2.0

Re: Replacement distributor options

Maybe your option 2 is the answer...I feel I might do this myself.
alfalevel is offline  
(Post Link) post #9 of 13 Old 09-04-09 Thread Starter
Status: -
AO Member
 
Cosmo's Avatar
 
Join Date: Jul 2006
Location: Surrey, England
Posts: 480
Images: 3
Re: Replacement distributor options

Quote:
Originally Posted by Mound Dawg View Post
Have you spoken to Max?
If you mean Max "They're all crap apart from the one we sell", then yes I have. I don't mind strong opinions - I have enough myself - but I would be mindful to add reason to my argument. Fortunately I did get to speak to Andrew at Castle Combe on Saturday who was able to explain the issues in a little more detail.

It would help me a lot to get some information on the specifics of the remapped Bosch advance curve that Max claims so much for.
Cosmo is offline  
Status: -
AO Silver Member
 
harryf's Avatar
 
Join Date: Sep 2002
Location: United Kingdom
Posts: 2,294
Images: 16
Garage
Re: Replacement distributor options

For my money I'd go with the 123 in your situation. There seem to be a lot of happy users out there.

I seem to recall there was discussion about a programmable curve version at some point in future which would let you do what you want.

But surely it has to be at least as good as the original system, plus it won't drift off with points wear.
harryf is offline  
Status: -
AO Silver Member
 
garry-graig's Avatar
 
Join Date: Dec 2007
Location: Vatican City State (Holy
Posts: 3,419
Images: 4
Re: Replacement distributor options

Quote:
Originally Posted by harryf View Post
For my money I'd go with the 123 in your situation. There seem to be a lot of happy users out there.

I seem to recall there was discussion about a programmable curve version at some point in future which would let you do what you want.

But surely it has to be at least as good as the original system, plus it won't drift off with points wear.
I agree,I have something similar to the 123 ignition in my Spider for the past 15 years and not one problem..
garry-graig is offline  
Status: -
AO Member
 
Mound Dawg's Avatar
 
Join Date: Apr 2006
Location: United Kingdom
Posts: 346
Images: 1
Re: Replacement distributor options

Quote:
Originally Posted by Cosmo View Post
If you mean Max "They're all crap apart from the one we sell", then yes I have.
Umm, it's more like "we don't sell those because they're crap" but I know what you mean...

The dizzy's we sell are usually built with the advance curve to suit the owner's engine spec but we did a get a bunch built up to suit most cars (ie, "fast road"). I've got some advance curve figures somewhere in work for one of these but they're a bit meaningless unless your an expert in these sort of things (I'm certainly not!). I'll post these here at some point when I can dig it out!

Jim Spackman
Alfaholics.com

Alfa 75 TS LE Veloce
Fiat 125 Abnormale
Mound Dawg is offline  
(Post Link) post #13 of 13 Old 13-04-09 Thread Starter
Status: -
AO Member
 
Cosmo's Avatar
 
Join Date: Jul 2006
Location: Surrey, England
Posts: 480
Images: 3
Re: Replacement distributor options

Quote:
Originally Posted by Mound Dawg View Post
I've got some advance curve figures somewhere in work for one of these but they're a bit meaningless unless your an expert in these sort of things (I'm certainly not!). I'll post these here at some point when I can dig it out!

That would be great, thanks.
Cosmo is offline  
Reply

Go Back   Alfa Romeo Forum > Supported Alfa Romeo Models > Technical & Vehicle Assistance > The Classic Alfa Romeos

Tags
distributor , options , replacement

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

 
For the best viewing experience please update your browser to Google Chrome