Distributor confusion/identification help

lorri789 · Dec 16, 2014

Hi geezers,

I wish to replace my dizzy and came away a little confused. The dizzy that came out is a 35DLM8 version with the 2 pin amplifier.

Weird thing is, my engine is a a 36D number.

So which do I buy? I can use a converter cable I believe for the wiring, but which dizzy is for me?

3.9 Efi
Non cat
1992
En: 36D

Saint.V8 · Dec 16, 2014

Found this in my 1990-1994 manuals....

Hope it helps

classic kev · Dec 17, 2014

IIRC you need to check the numbers on the dizzy you have got as they should tell you what the advance curve is. The 35DLM distributors are all essentially the same but the advance curves have variations depending on the engine. I'm sure I read something about it somewhere but I'm afraid I can't remember where. HTH.

lorri789 · Dec 17, 2014

Okay, ta much. I better have another look.

what do the numbers 4251VA 1792 mean?

Anyway, I found a part number on it: ERR....0744. i should of noticed it but it was just displayed funny.

wammers · Dec 17, 2014

lorri789 said:
Okay, ta much. I better have another look.

what do the numbers 4251VA 1792 mean?

Anyway, I found a part number on it: ERR....0744. i should of noticed it but it was just displayed funny.

ERR0744 does not exist on Microcat.

Saint.V8 · Dec 17, 2014

(American Site) but it lists ERR0744 as the dizzy for the classic 4.2 V8's

1993 Range Rover Distributor (Classic 4.2L LWB)

And the online 4.2 Workshop Manual lists it as the ERR0744 part number (attached picky)

But MicroCAT lists the 4.2 as ERR4739

wammers · Dec 17, 2014

Saint.V8 said:
(American Site) but it lists ERR0744 as the dizzy for the classic 4.2 V8's

1993 Range Rover Distributor (Classic 4.2L LWB)

And the online 4.2 Workshop Manual lists it as the ERR0744 part number (attached picky)

But MicroCAT lists the 4.2 as ERR4739

ERR0744 not listed on Microcat and does not compute at Rimmers. Have not gone through Microcat in detail there are lots listed. But the only two pin one i saw for the 36D is no longer available according to Rimmers. Being an auto it will be the HC engine so that is the dizzy he needs.

Saint.V8 · Dec 17, 2014

Try

simonbbc.com they do V8 dizzy bundles

cooltide · Dec 17, 2014

You need a 35DLM8 with the amp riding piggy back. If you reuse your amp you need to paste mating face with heat sink silicone grease.

You can also use the 35DM8 with the amp mounted on the wing but it wouldn't have been original fitment on your car.

Would also recommend Simon BBC

cooltide · Dec 17, 2014

Be sure to scribe old dizzy where the rotor arm is pointing before you pull it out.
Use as reference to install new one correctly and make sure it engages the oil pump drive gear properley with the flat screwdriver style fitting on the bottom.
Where the neck widens on the dizzy stem sits flush with the front cover when engaged.
Then advance it a degree every day you use it (anti clockwise) till you notice pinking under load and operating temp. Then back it off the last adjustment to achieve best timing.

wammers · Dec 17, 2014

cooltide said:
Be sure to scribe old dizzy where the rotor arm is pointing before you pull it out.
Use as reference to install new one correctly and make sure it engages the oil pump drive gear properley with the flat screwdriver style fitting on the bottom.
Where the neck widens on the dizzy stem sits flush with the front cover when engaged.
Then advance it a degree every day you use it (anti clockwise) till you notice pinking under load and operating temp. Then back it off the last adjustment to achieve best timing.

Or you could of course set the timing correct from the off.

cooltide · Dec 17, 2014

wammers said:
Or you could of course set the timing correct from the off.

5 deg btdc dealership default but not necessarily correct. Safe with a few horses left bolted in the stable

lorri789 · Dec 17, 2014

Great. Thanks for the help. I'll just be doing the timing from the off and go from there.

I just do the timing by sound and then test it under load and adjust as necessary. Only then do I get me strobe out. I do like me strobe.

ERR(0)744 has been superseded by ERR4739...I think.

The extra zero was added later btw. The original code was ERR744

wammers · Dec 17, 2014

cooltide said:
5 deg btdc dealership default but not necessarily correct. Safe with a few horses left bolted in the stable

It is correct, it's just that sometimes a little tweak for best effect helps, but best to start from a known point.

Distributor confusion/identification help

lorri789

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