72 FJ40 timing and others

Joined
May 19, 2005
Messages
7
Hey guys - I was recommended to this site from a different board. A friend of mine who knows nothing about vehicles has a 1972 fj40 that recently broke down. Long story short it ended up in my garage. The truck has been converted to fuel injection from an 89 Chevy s10 as well as HEI ignition. I replaced the fuel pressure regulator and it ran great for about a month. Broke down again. This time it had a bad intake valve on #1 and we are waiting for the head to get back from the shop. He was told the engine is from a 1974 when he bought it. BTW - great info on here for adjusting the valves. I know nothing about these trucks, so I have a couple questions. Please don't flame me for the 1st - I searched this for a while, and I know it is asked all the time, but couldn't find what I needed. Does anyone have a picture of where the timing marks are on this truck? I know it is supposed to be above the starter back by the flywheel, but I can't find it. Main problem being that the truck is only used for off-road and never cleaned, so it is covered in dried mud. A picture would be great if anyone has one. Question #2 - What are the torque specs and sequence for the head, rocker arm assembly, and intake/exaust manifolds. TIA to anyone who can help me out with this.
 
Joined
Jun 20, 2003
Messages
339
Location
Watertown, NY
do you see the hole in the housing above the starter? There should be a needle type apendage in it, put a timing light on it and the flywheel has a hole that will show you where it is. I would picture, but don't have an F anymore.
 
Joined
May 19, 2005
Messages
7
Thanks for the help. I think I found out. Hard to tell with the mud, but its a hole cut in half by the "needle"? Looking at the starter from the front the hole is towards the engine about the level of the solenoid? Sound about right? I forgot one other question as well. With the conversion to fuel injection and HEI - should there be a vacuum advance? This has one, but I would think the ECM would control the advance/retard of the timing. Has anyone else done this? Thanks again.
 
Joined
Feb 1, 2002
Messages
467
Location
Indianapolis, Indiana
 
 
 
dmleonard said:
Thanks for the help. I think I found out. Hard to tell with the mud, but its a hole cut in half by the "needle"? Looking at the starter from the front the hole is towards the engine about the level of the solenoid? Sound about right? I forgot one other question as well. With the conversion to fuel injection and HEI - should there be a vacuum advance? This has one, but I would think the ECM would control the advance/retard of the timing. Has anyone else done this? Thanks again.
Depends if the ecm is actually controlling the timing, which is not required. Is there a gm ignition module on it? These are commonly mounted inside the distributer for fully electronic conrolled vehicles, but those distributors do not have vacuum.
 
Joined
May 19, 2005
Messages
7
Yes - the distributor does have an ignition control module. It is an msd, not gm though.
 
Top Bottom