HappyPappy

Here is a question for the 4.0 buffs, If a cam is off 180 degrees will that make the motor run hot? It was hard starting before, had to grind awhile before it fired up. Now should I reset the cam and dist before I put the new chain and gears on? Looks like the PO put it together 180 off timing. It ran OK other the running hot and hard starting.

freegdr

No motor will run 180 off ....

freegdr

Timing chaing mark alingment is not related to tdc dist alingment ....

HappyPappy

According to the manul, the cam pin should be around the 2 o-clock possition, mine is at the eight o-clock position. Sounds crazy but this thing ran

freegdr

Timing marks point at each other on chain when installing ,dist points to no 1 tdc compression stroke dont no where cam pin comes into play or what book you loking at

HappyPappy

Chilton! When I opened the engine up and tred to line up the marks they where way off. Crank mark was where it was supposed to be but the cam was 180 degrees off (11 o-clock pos).

freegdr

ok still motor wont run 180 out no way

95_xj_country

This is from a 95 xj factory service manual. It says to turn the crankshaft until the sprocket timing mark is at the position in the pic. And there should be 15 pins in the chain between the two timing marks.

HappyPappy

Right, mine says the same thing, but is there a missprint somewhere in the system. Without the gears being on, the cam sproket guide pin is shown at 2 o-clock, mine is at 8 o-clock, that is where the question comes in. I'll have to check it closer tomorrow, past my bedtime. Thanks for your feed back.

freegdr

nothing needs to be worried about pin if you want turncam gear around move pin to other side nothing will change

95_xj_country

Put cylinder 1 at tdc and make sure the two marks on the sprockets are pointed at each other. Then check the 15 pin thing

95_xj_country

Just put the cam bolt in and turn the cam with a wrench.

freegdr

This will trow timing marks 180 out all its gonna do

PatriotGT

are you sure it was on the compression stroke when you first
opened it up?
You know the crank makes two revolutions to the cams one.
Where was the rotor button pointing?

95_xj_country

How would it do that if you had the timing chain off? You would just be changing the position of the cam. That wouldn't work?