NO. can't just change the crank, I don't have the specific differences, (nor the reasoning behind the change). suffice to say it's more than the number of bolt holes on the butt end.
http://www.vfaq.com/mods/early-late-engine.html
NO. can't just change the crank, I don't have the specific differences, (nor the reasoning behind the change). suffice to say it's more than the number of bolt holes on the butt end.
http://www.vfaq.com/mods/early-late-engine.html
found more info
What is a 6-bolt engine?
What is a 7-bolt engine?
A 6-bolt engine is one that has a 6-bolt flywheel - that is, there are 6 bolts holding the flywheel to the crankshaft. A 7-bolt motor has 7 bolts there.
Along with the flywheel change, there are many other internal changes between the two engines. The crankshafts are different sizes, as are the rods and crankshaft seals. 6-bolt motors have 'big' rods, while 7-bolt engines have 'small' rods. The journal and bearing widths different, although the bearing diameters are the same.
There may also be other changes between the two engines, and the parts are not interchangeable.
So while mine is apart any advice on the dreaded "crankwalk" since I have a 7-bolt? I dont plan to make this a super race engine. It's just going to be my go getter truck til I can buy another one. I really want a V6 4WD and do a VR-4 swap. Or another 4 banger with no title and drop a 318 or hemi in it. There's a truck in my area but he wants 2900. It's super clean but out of my price range atm.
don't worry about Crankwalk, If you don't have it, your's is good.
Yea 198k and my bearings looked new and my cylinders dont even have ringstep. My bottom end was in very good shape. What were the symptoms? My engine did have a intermittent deep knock (sounded like bottom end) up til the belt broke
From the VFAQ Site.
http://www.vfaq.com/index-main.html
huge resource, you just have to adapt the knowledge to the Truck, because it all about 2.0 cars.
Apparently, the factory had a bad run of CRANKSHAFTS, not bearings. The crankshafts were machined just slightly out of spec, and as a result the main center thrust bearing on the crankshaft wears prematurely. When this happens, the crankshaft will move or "walk" every time the clutch pedal is depressed. Some people have complained of difficulty in getting the car into gear (manual transmissions) and the diagnosis has been the same: a "walking" crankshaft. Well, it seems my crankshaft walked so much that it pushed the crank sprocket and the trigger plate forward and caused the trigger plate to come in contact with the crank sensor.
Ah yeah my thrust bearing was fine when I tore my bottom end down. BUT it could still be possible the crank is a bad one since mine is an auto it never got pushed hence it wouldnt walk. I'll check crankshaft endplay once I get the new bearings in just to be safe. That's kind of a mandatory step of building an engine anyway.
Reply With Quote
Bookmarks