|
 |
Technical Info
Click on thumbnail to enlarge photo
This is my page of volkswagen vanagon technical info and general odd stuff.
Oh
No My Cylinder Heads are leaking.....
To
hopefully stop the new cylinder heads from leaking, I had them
ceramic coated, before installing them, when I did the last top end
rebuild on my 90 westy.
Photo of a ceramic coated VW vanagon cylinder head.
The coating is almost white. The combustion chamber and the outer
sealing surface has been coated.
In addition a high heat epoxy coating has been applied to the coolant
hose connection and the surface where the thermostat housing is mounted.
The coating still has to be lapped off the valve seats.
Sounds of Vanagons (to be taken with a
grain of salt)
Many people are asking about the meaning of the different sounds
emanating from their vans. I compiled a list of the more interesting sounds my
VW vans have made over the years.
1. Loud clicking with intermittent horrible grinding from the rear at slow speed. Very scary. Cause: Usually, just some sand or dirt in one of the rear brake drums. Repair: Usually disappears by itself after a few miles.
2. Deep heavy rumbling, first only in turns, then increasing in frequency. Cause: Bearing failure. Repair: Identify and replace the bearing.
3. Grinding sound when accelerating up a steep hill, but disappears on flat ground. Cause: Worn CV joints. Repair: Replace CV joints.
4. High-pitched squeal every time brakes are applied. Cause: Front brakes unevenly worn. Repair: Service front brakes.
5. Quiet scraping sound, when you apply brakes first time in the day. Cause: Rust on the brake discs. Repair: Just brake a few times to wear off the rust.
6. Mysterious creaking sound from the front, when driving over bumps. Like bullfrogs living under your van. Can become a totally obnoxious irritant. Cause: Front upper swing arm bushings dry. Repair: Usually not an emergency, but bushings should be replaced in time.
7. Loud banging when going over bumps. Like someone hitting with a hammer. Cause: After-market shock absorber didn't fit tight on mounting bolts. Too much play. Repair: Replace shock and make sure mounting fits tight on upper and lower mounting bolts. Replace bolts if worn.
8. Even, steady grinding sound from the back when motor idling. Cause: Low transaxle oil. Repair: Fill transaxle with oil and say a prayer.
9. Loud ticking and tacking from the back when you first start up. Cause:
Hydraulic valve lifters. Repair: Change oil, fill to the top. Drive at moderate
speed until it disappears. If not, use oil additive to lubricate lifters.
10. Most horrible squealing from the engine when revving. Cause: V-belts.
Repair: Adjust tension on belts or better replace with new ones.
11. Loud thundering when you first get on freeway. Cause: You forgot to take down the pop-top. Repair: Pull over, and try again.
I experienced all of these interesting sounds. If your van makes a mix of all
of these, it probably is pretty happy.
Click to go Home