I am currently looking into the ignition requirements for a 2.0 Pinto engine i am fitting into a Tiger build for someone. The engine is fully reconditioned and as standard. Twin Weber 45 DCOE's are being fitted and i have been supplied with a standard vacuum advance distributor straight from a scrapyard.

Now my understanding of it was that as there is no vacuum take-off with the twin Webers that a non vac advance dizzy is required to give the proper advance curve but i believe the standard unit has been utilised with the vac advance simply left disconnected (which i thought would give a considerable loss of power??)

So whats people's opinions on this subject?? I guess there are 3 options (but please tell me if there is a 4th)

1. Stick to the standard dizzy with vac advance.
2. Find a non vacuum advance dizzy
3. Bin the lot and fit Megajolt

Are there any differences on the expected power outputs and driveability with the above options??

What are the costs like for the megajolt (i'd probably buy the kit and solder it up myself unless i can find a built unit cheap enough) as the guy is on a pretty tight budget.

Edited to say a change of cam is highly likely when budget allows so need to take this into account also.

[Edited on 31/12/07 by Paul TigerB6]

Bin the lot and go with Megajolt i'd say!.
Everything else is pretty much a comprimise.

The Megajolt itself can be had for around £80 and the coil pack and trigger whell and Crank Position Sencor and associated wiring can all be found in the Scrapyard or often appears on ebay for about £40 or less.

When we had Twin 40's I don't think the jetting was ever quite right and they were practically undrivable with the standard dizzy.
I don't think the Fast Road cam helped either, but with the Megajolt it was just so much better, like the car we'd always hoped for.

Should you change to a fast road cam later then "tuned" dizzys would need re-setting up whereas with the Megajolt you can do it all yourself.
Although saying that I seem to remember Jacko on here did manage to find a tuned Dizzy that was very good and easily adjustable, it might be worth doing a search or looking through his old posts.

the vac unit on the dizzy is just an economy device for part throttle running ,
If you leave it disconnected the engine will run well and perform ok but not quite aswell as a optimised non vac dizzy

A Megajolt kit from the Usa is only £35 +£10 Pnp (+ import duty "IF" your unlucky )with Tps function.

The kit is very easy to build, I really enjoyed building it boxing day.

the New V3 software is very cool aswell.

A set of bike ccarbs can be had for less than £50 they dont look as good as a set of Webers but produce the goods. And come with a free Tps

[Edited on 31/12/07 by big_wasa]

I've got Megajolt and bike carbs, the MegaJolt is so easy to set up and modify and will always be better than a dizzy.
New V3 can have a second map switchable on the fly

Definately sounds like the way to go then, subject to budget. I'll get the car built up as far as possible and see how the budget goes as i think i have pretty much most parts bar a few little bits such as hose clips, plug leads, coil, nuts and bolts etc.

Recon i can do the megajolt for around £100 then including coilpack, EDIS4, trigger wheel etc and obviously wont need to buy a new coil.

No 4 option
ring H&H ignition solutions on
tel 01384-261500
that's what i did and got a nice new dizzy all modded to fit my modded pinto engine + new coil pack etc for just over £100 that was 2 years ago
Jacko

No. 5 option.

Bin the lot (including carbs) and fit Megasquirt 'n' Spark -extra all connected to a set of throttle bodies.

Get proper ignition and injection as well then!

Cheers,
James

I vote MJ.

MS is nice but a whole lot more expense.

e-mail this geezer: martinptownsend@aol.com

for your trigger wheel requirements.

£ 10 inc p+p for 36-1 wheel, laser cut, nice, quick service, you won't buy cheaper.

same price for custom size e.g. crossflow with larger centre hole. (I dare say if you wanted something mega big then cost of steel may come into it + cutting time)

Megajolt its going to be after a chat with the owner yesterday. Thanks for the info on the trigger wheel - looks a whole lot simpler / neater (and probably hardly any dearer) than welding on a 1.8 cvh trigger wheel.

So next question, where's the best place to order the self assembly kit from?? I can get the whole lot direct from Autolabs but may have to pay import duty and VAT which may push it over £60 and take maybe a bit longer than getting it from someone over here.