Search results

Dirk, being a design engineer and mechanic I can really relate to your thinking process! There are times it actually hinders me. I submit that if you had a spider gear problem you would hear or feel it no matter which axle you rotate. The spider gears travel around each other in the same manner...

One point to take into consideration is which motor you have. I have a Canadian M37 that has the 251CI motor in it. The American trucks had a 230CI motor in them. According to Vintage Power Wagons the 251 motor will take higher RPM and cylinder pressures than the 230. This is because the rod big...

For the adapters that have the 1/2" drive socket offset from the hex socket end, how do you calculate your actual applied torque? The added leverage of the offset will give a higher torque on the fastener than your wrench is showing. The adapters that have the 1/2" drive socket directly above...

Hi Toby Good to see you have the nice boom truck. I did not remember seeing it when we visited you. Looks like it is all wheel drive also. I understand the up-front cost of a M543A2. I watched a guy use one to load a Detroit 6V-53 for me and told my son we will own one. About two years later...

Toby, find an M543A2 and actually if you consider your time worth anything now and on future projects you will use it for you will save money and do the work much more safely and efficiently. With the things you do, you will wonder why you did not have it several years ago. You can pick the load...

One of ours made a noise traceable to the water pump bearings with the stethoscope. The bearings had failed but it did not leak coolant. With the belts loose see if the fan shaft has play in it when you move a fan blade fore and aft by hand. If you do not have one you can buy a mechanic's...

A mechanic's stethoscope might help find where the noise is the greatest if you do not have loose belts. New belts typically need re-tightened after a short time. Place the stethoscope probe in different places like each end of the alternator, water pump, turbo, etc.

I find it interesting and frustrating how many different experiences we see with oils and additives. After all of this gets said, who knows what is actually right for their application(s). I can say one constant here is that our 'friends' at EPA have removed all zinc from oils so for flat tappet...

Can you pull start it to get it running? Would let you warm up the engine and get oil on all surfaces again to prevent rust. Are all of the starter brush springs pushing down on the brushes as they should, or brushes hanging up in the holders? I have had one hanging brush cause that problem. The...

Seems antifreeze gets thinner in cold weather, but I think it actually is the dimension changes in parts and clamps due to the cold. School buses I worked on required that we use spring clamps so tension was maintained on coolant connections. And yes, I am guilty of polishing rough parts also!

No one has really mentioned the difference you will see in mud or deep snow if you remove the outer dual tires. Build-up ahead of the duals along with in the case of mud filling in between the wheels causes real problems. The rear duals filled with mud are like trying to pull rollers through the...

There is a brass piston in a barrel you can see externally in the top cover of the carb that is held up by engine vacuum against a spring, then drops down from the spring pressure when engine vacuum drops under acceleration to shoot an enrichment jet of fuel into the carb throat by means of a...

It is normal to be able to turn on lights with the acc. switch off. We have had several flasher units go bad. Check for power to it with the turn signal lever one way on the other. If no power to flasher unit, suspect the turn signal switch given it has power to it. If you do have power to the...

We religiously use anti-seize on every bolt or nut we install. Put it full length on every water manifold bolt, they get corroded in place in the aluminum manifold if you do not then the head twists off. It would be wise to pull the water manifold bolts one at a time and anti-seize them while...

Can't be as simple as a head gasket because no oil goes to the head. I agree with NDT.

I should have mentioned, go to 6066gmcclub.com to find a site with many articles and threads of discussion about the V-6 gas and diesel engines. You will probably find discussion there with members who have done the conversions like you want to.

Head gaskets are virtually unobtainable. I took an old one and drew up an ACAD drawing with the idea of having a shop CAD/CAM cut them out of soft copper, but have not done it. We found ours to be very fuel thrifty with good power. Be very careful if you ever use ether because it will blow the...

If you take your vehicle into those conditions you better have your cell phone (if it will have a signal) and credit card ready! Interesting to watch as long as it is not my vehicle.

I cannot comment about your interchangeability. I can say whether or not you need to replace it depends on how severe the pitting is on the worm surfaces. Is it general or only on one side, hopefully not on the load side of the teeth? I ran a Mopar 4.10 ring and pinion rear gear set with...

Rusty Stud, now for discussion about how much 'fun' it is getting the double reduction units out of and back into a housing----! About as much fun as pulling out a front loader power divider/gear set in a tandem. We did not really have good way to get a hold of it so you do not feel it may roll...