Mallory dizzy

[daveparry]

Hi, Can anyone tell me the correct model or part number for the Mallory that fits a Chimaera 4.0ltr, I know someone who is going over to the USA and may be able to get me one if only I knew for definate which one.

Thanks Dave

[rev-erend]

I think it's :

Mallory Unilite 4768901

but doing a google search on Mallory Unilite reveals a pottential issue in that the centrifugal ignition advance (spring) needs to be tailored to be the same as the TVR set-up.. others with Land Rovers had running issues..

Depending on your engine size the figures are something like :
As an example, the centrifugal advance, no vacuum for the 9.35:1 engine is; 8-12/1200, 14-18/2400, 20-24/3600.
the 5.0 engine takes less that a 4.0 engine (max advance here is 26~28 degrees at 3600 rpm)

Here is a UK supplier for price comparison - they are supplied with springs
http://www.v8tuner.co.uk/product.php?id=165

Hope it helps.

Edited by rev-erend on Tuesday 6th January 15:50

[daz the plumber]

can you what you will acheive when fitted to a standard set up, i thought these were more for lpg

[MADMAX2]

i heard they dont perform too good and phers go back to standard dizzy

[daveparry]

Hoping to gain better more powerfull spark to aid combustion after fitting ACT smooth bore induction kit with K&N filter and an AM20 air flow meter, having had the car on a RR it appears to be slightly overfueling. Most of my info comes from the guys at RPi who have an enviable reputation in my opinion. Top gear Sdi etc!

[daz the plumber]

they would try and sell you anything ,even your granny lol.i called them some months back to purchase a pair of engine mounts, i was on the phone for nearly one hour ,they tried to sell me a chip, power amp, leads ,plug extenders , fuel regulators and the list goes on , my ears were ringing .lol

[rev-erend]

daz the plumber said:

they would try and sell you anything ,even your granny lol.i called them some months back to purchase a pair of engine mounts, i was on the phone for nearly one hour ,they tried to sell me a chip, power amp, leads ,plug extenders , fuel regulators and the list goes on , my ears were ringing .lol

Strange you say that - as I was with a true RV8 guru and he called RPI (Chris) - super salesman..

[rev-erend]

I seem to remember that TVR power were advertising the fact that they could recondition distributors - would be a safer option.

Also - at those kind of prices, it's probably worth considering going to a distributorless system - I know Mark Adams was fitting the Omex (200) system a few years back .. that was you get a fullly mapped ignition system with coil packs .. much greater accuracy and a torque increase .. I think 20 ft lbs was mentioned at the time.

[daveparry]

Please go on, I have heard about but not much, what is involved in converting to a coil pack system?