Outer Limits 4x4 Board

I have a 92 80 series with a 3F. It has stripped the timing gear.

I need help im not sure how to get what is left of it off the end of the cam? I have removed the sir clip

Any help would be very much appreciated. Also when i go to fit the new gear is it as simple as just lining up some dots on the two cogs?

Thanks in advance for your help Darren

You need to take the cam out and put it in a press. It is a bastard of a job. I used a 50 ton press and it was putting in some effort before it popped off.
You might be able to grind the side of remains of your existing ( dont hit the camshaft with the grinder ) one to release the pressure and it should come off easier.

I used the press to put the new one on too, with a little bit of engine oil to stop it galling on the way down.
replacement timing gear is around $70 from Terrain Tamer

Easy to line up the timing marks off the gears

If the timing gear broke when the engine was running, you might have to pull the head and get the valves checked as they may have contacted the pistons

Clanky wrote:If the timing gear broke when the engine was running, you might have to pull the head and get the valves checked as they may have contacted the pistons

I was under the impression they have valve retention? is there any way of checking before i bother going ahead pulling head off or fixing it?

Clanky wrote:You need to take the cam out and put it in a press. It is a bastard of a job. I used a 50 ton press and it was putting in some effort before it popped off.
You might be able to grind the side of remains of your existing ( dont hit the camshaft with the grinder ) one to release the pressure and it should come off easier.

I used the press to put the new one on too, with a little bit of engine oil to stop it galling on the way down.
replacement timing gear is around $70 from Terrain Tamer

Easy to line up the timing marks off the gears

Is removing cam as simple as lossening rockers and sliding it out the front of motor?

Thanks for your help cheers Daz

loosen off the rockers and you will also need to remove the lifters too

hulsty wrote:loosen off the rockers and you will also need to remove the lifters too

& dizzy & fuel pump

thank you very much guys. Is oild pump going to be an issue?

Also how do i remove the lifters?

thanks

DAZ wrote:thank you very much guys. Is oild pump going to be an issue?

Also how do i remove the lifters?

thanks

Oil pump should be no problem as it is driven by the end of the distributor shaft (slot). Distributor has to come out as it is gear driven off the camshaft.
Lifters may come out the pushrod hole if it is big enough. Some engines you can , some you cant. If you cant, head has to come off. Use a magnet or maybe your finger if you are lucky.

I didnt understand you question about valve retention. They are all retained, but if the timing sequence is out such as the case with a broken timing gear, valves can be open when they are not meant to be in relation to the crank and the piston comes up and gives them a big kiss. Left unchecked, a bent valve will eventually fail and you will need a rebuild or new motor

pull the side cover off the block behind the dizzy to get access to the lifters

pcman wrote:pull the side cover off the block behind the dizzy to get access to the lifters

Hell yeah, I forgot about that old skool cover there.

Thanks again people i understand all that I think lol

i went to an engine builder in town yesterday he said $120 drop off cam and he will give it back with new timing gear fitted. He said a 3F the valves are so far away from pistons they will not hit. I refer to valve retention as they have no interferance with piston no matter how far out timing is.

I hope to get this job done next week. will post update Thanks all for your help Darren

Sounds like you have it sorted. Lets know how it goes

FYI update "if i dont laugh ill cry"

Worked on the 80 tonight and removed

Grill, headlights, condenser, radiator, A/C pump. Power steer pump, air cleaner, rocker cover, dizzy, side cover, rocker gear, push rods, put my finger in lifters slid them up, pulled cam out front and plop one, of the lifters fell in grrrrrrrr im guessing its in the sump

is the sump easy to remove? dose it clear every thing or do i need to lift the motor?

Thanks if you can help

drop cam off tomorrow to have new timming gear fitted

cheers Daz

FYI to thoughs following this thread and interested

firstly thanks to thoughs that offered some advise etc it helped heaps thanks.

i got the 80 back together tonight but it would not start so i rotated the dizzy 180 deg and it sort of fired when adjusted fully one way.

I removed the bolt from the dizzy and tured it a little past its adjustment it started and ran very nice. Im guessing im out one tooth or what ever it is and ill have the timing right.

The only complaint i have is they fitted a solid steel timing gear instead of the bakerlite type gear it had so it has a gear drive noise now.

cheers Daz