9 replies to this topic

[BradleyRogerson]

Yo! never posted on here before but i do enjoy having a good look through the forum and i couldnt find anything to help my problem so i thought id just ask :) 
anyway.. iv just this week swapped my engine out of my 83 mayfair for another 998 (later model) and last night when i was in work it was overheating, this morning when doing a compression test i noticed my spark plugs are ridiculously hot! and id say my timing is abit out. could this cause the problem? my dad said he's had this problem with his willys jeep before.. is my timing to over advanced? to retarded? 
Cheers 
Brad :)

[Cooperman]

Could be too far retarded and/or running too weak.

[BradleyRogerson]

would i turn it to the left to advance it then? could it be over advanced? also when i put the engine i took the dizzy drive out and put it back in around "2oclock" position could it be a tooth out maybe?  

 

[Cooperman]

Turn distributor clockwise to advance and anti-clock to retard. The rotor arm rotates anti-clockwise, so moving the distributor clockwise means it fires sooner, hence more advanced.

The position of the distributor drive shaft does not control the timing as the distributor body turns after the locking bolt(s) are loosened and the distributor body position is what controls the timing of the sparks at the plugs.

The reason for the position of the distributor drive shaft slot as shown in the workshop manuals is to optimise the actual position of the distributor in respect of where the leads run and, on some cars, the clearance of the vacuum advance retard to other items on the engine.

[jaydee]

If it was tooth out on the drive it probably wont even fire

Check the timing with a strobe, set it at 8-10 degs with vacuum disconnected. Reconnect vacuum and see how many degrees more it reads, you need about 20 - 30 degs with vacuum on.

Then test drive.

[Cooperman]

Whenever the distributor is removed and replaced it is necessary to re-set the timing. Even if the dizzy shaft is not removed the dizzy must still be accurately re-set.

Too far retarded and the engine will run very hot. Too far advanced and it will suffer from pre-ignition which can and will cause the piston rings to snap, score the bores and ruin the pistons if run at an incorrect setting for any length of time.

[BradleyRogerson]

right i'll look in to that tomorrow, i think i have a strobe in the garage somewhere. i know this may sound stupid but how hot should the spark plugs get? i know they'll be hot cause they're in the engine but the ceramic bit is roasting cant even touch it for a while... yesterday i turned the dizzy clockwise to advance it the revs dropped so i turned the idle up but still runs hot so im guessing the timing is just all wrong..

[BradleyRogerson]

still overheating :/ dont think its the timing as it drives fairly alright, i took the stat out and i thought it fixed it but as it was driving on the express way it boiled over but was only showing half on the temp gauge. i've also flushed the engine... 
on the a+ engine is the piping different? i know the piping on them come out of the head and run towards the rad and back in to the right hand side on the bulkhead, is this just because they had the larger brake servo in the way? because iv fitted the later servo but just lengthened the heather pipe and gone over the top of it.. could this be my problem? to high and causing an airlock? although it didnt cause me and issues with my old engine. any ideas guys?

cheers 

[jaydee]

You should have a pipe coming from the cylinder head to the bulkhead (actually to the heater matrix) please check.

[BradleyRogerson]

yeah i do thats the one i lengthened