BBVX,
You posted about noise in front. Now you say you're getting a new REAR diff?
Some info the lifters might find helpful. I've previously posted that when I got my Proton, it had 912's in the rear and was lifted to be level. That is BAD because.......
1) the VX has a factory rake, the front is between 1.5 and 2 inches lower than the rear.
- If you don't maintain the rake you whack the alignment.
2) Leveling with 912's in back equates to approximately a 4 to 4.5 lift on the front, which will cause serious stress on all the front diff components. You're CV's will be approaching a 45 degree angle. Even the CV boots don't like this and might tear, let in road gunk and destroy your CV's ....ask Proton Smoke (3 inch lift), he paid about $1700 to have ONE side replaced!
Another AWOL member,"Big Meat VX", advised dropping the front axle 1/2 inch per 1 inch of lift if you go more than 2 inches.
If you lift, do it in moderation.
Yal,
If it only happens in a certain gear, it's probably NOT your engine.
Check what RPM and gear it occurs at. Then, hold it in any gear and bring it to that RPM If it doesn't happen in all gears at the same RPM. That should eliminate the engine.
P.S. When testing, don't hold it at hi RPM's (over 3000 RPM) in any gear for a long time.
EX: 1st gear @ 5500 RPM for >10 seconds
Next, note what speed(s) the noise is present, get the vx into that range and take your foot off the gas and shift into neutral. Your RPMs will dropand if the noise drops with the engine RPMs then it's engine related. If the noise drops with the VX's speed in neutral, then it's driveline related.
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