Thread: Dizzy Install 95 Disco 3.9 V8i

Originally Posted by AussieLandRover

I need help on installing my new upgraded dizzy in my 95 Disco 3.9 V8i.

What I need to know is which is the number one piston on the V8i and then how to install the dizzy.

I hope I can get a quick answer to this one.

I have tried searching but could find nothing and the manual CD was no help either.

Already replied in you other thread

No1 is alwyas the furthermost forward cylinder

Google cut and paste, to make my life easy

The process to install a distributor is as follows: Crank the engine over until the number one piston is coming up on the compression stroke. You can remove all the spark plugs and crank it over with your finger in the #1 spark plug hole and wait until you feel the compression start to build up. Both valves will be closed.
Next, watch for the timing mark to come to TDC. Stop the cranking there. Now set the distributor so that the rotor is pointing at the #1 position on the distributor, ie. where the #1 spark plug wire would be when the cap was in place.
Insert the distributor into place and make sure the gear is engaged. Then push it into place. The distributor gear is a bevel gear which means that the distributor shaft will rotate when you push it into place. You need to watch to see how much it turns and then compensate by backing off the position on initial insertion so that it is perfectly lined up when it is fully seated.
The oil pump shaft may be driven by the bottom of the distributor. If it is then it may be difficult to get the distributor to line up with the hex shaft in the oil pump at the same time you have the gears lined up. When you are absolutely sure you have it ready to go in and have the gears engaged, just rotate the engine a slight bit until the oil pump shaft lines up and it will go in easily.
Recheck the position by going thru the cranking process described above and make sure that the rotor points to the #1 position on the cap when the crankshaft is lined up on TDC on the compression stroke.
Remember, the crankshaft is lined up on TDC twice as the distributor turns around, once on TDC when the piston is coming up on the exhaust stroke and once when it is coming up on the compression stroke!! Don't get the two positions confused. Make sure you are on TDC on the compression stroke

Numerous ways to asertain compression stroke, either take the rocker cover off and note which valve closes on what revolution, pull the plug and with your thumb over the hole, it will try push past, hence compression or do what I do.......Just line the timing mark up, stick it in, if it runs its good, if it backfires its 180 degree's out

How do I tell it's the compression stroke ?

Example piston is up to plug then is hard to turn when it comes down ?

Look up^^^^^

Thanks mate all done and all working and much better then berfore

Which "upgraded" dsitributor did you fit? Was it a Scorcher?