the brick hits the dyno

[rockerarm]

tencentlife, how much time do you spend on installing those CB cams. Do you dial them in as per the spec card using degree wheel/dial indicator? Also on your valve spring compresser, does the all-thread just sit in a "seat" in the flat stock, so that it does not rotate with the all-thread? What did you use for the piece that contacts the valve spring retainer? Thanks again, in advance, Bill.

[tencentlife]

The compressor thing has nuts welded to the crossbar. The "cup" that engages the spring retainer is made from a holesaw, I put it in the lathe and parted off the top with a little lip.

[rockerarm]

tentcentlife, what type of valve adjust screws are you using, or have currently used. Seems I read a while back that engines with hydraulic lifters should use the stock adjusters only based on the elephant feet or courier swivel feet need the "lash" to allow the oil to get into the moving parts. Personally, I am installing the Scat courier swivels with the use of a reground Web Cams stock cam/lifters on a type 1 engine for my '71 bus. Just curious if the WBX hydraulic cam engines are using anything other than OEM adjusting screws. Thanks, Bill

[tencentlife]

Seems I read a while back that engines with hydraulic lifters should use the stock adjusters only based on the elephant feet or courier swivel feet need the "lash" to allow the oil to get into the moving parts.

Yeah I've seen that nonsense too. Swivel-foot type adjusters don't need lash to keep lubricated, they work great with hydro lifters.

[rockerarm]

Have you heard of Bob Hoover who has been over on the samba for years. Has some mods to the stock case, lifters, rockerarms, and shafts to mimic the later type iv engines. Do not know if the wbx engine also has these factory improvements. I left the dealer in 1987. Did a lot of warranty work with wbx head gaskets and the seal between the trans and final drive, which allowed atf into the ring gear. Were good times back then. Need to catch up!! Later bro, Bill

[Piledriver]

Have you heard of Bob Hoover who has been over on the samba for years. Has some mods to the stock case, lifters, rockerarms, and shafts to mimic the later type iv engines. Do not know if the wbx engine also has these factory improvements. I left the dealer in 1987. Did a lot of warranty work with wbx head gaskets and the seal between the trans and final drive, which allowed atf into the ring gear. Were good times back then. Need to catch up!! Later bro, Bill

The T4 has lifter oil supply passages that run across the top of the lifter bores ---not blocked by the lifters.

The WBX needs all the same oiling mods the T1 does. (Hoovers "HVX" oiling mods)
The factory got "around" the indirect lifter oiling on the WBX by having ~3mm x17mm cut "waist" in the hydro lifters, providing a flow path.

On the WBX, if you go to T1 or T4 solid lifters, it's back to indirect oiling unless you make some tweeks.

[tencentlife]

The WBX needs all the same oiling mods the T1 does. (Hoovers "HVX" oiling mods)
The factory got "around" the indirect lifter oiling on the WBX by having ~3mm x17mm cut "waist" in the hydro lifters, providing a flow path.

You could do the HVX mods to the wbx case and it couldn't hurt, but whether it "needs" them? My experience says no. I've thought about trying it but in my engines I do other things to improve the oiling, and it is a better system to begin with, so I haven't run into any problem that the Hoover mod could cure, a solution in search of a problem. The hydros work flawlessly, and with the waisted lifters the oiling of the 1-2 top end is constant and it gets excellent lubrication.

[Piledriver]

The WBX needs all the same oiling mods the T1 does. (Hoovers "HVX" oiling mods)
The factory got "around" the indirect lifter oiling on the WBX by having ~3mm x17mm cut "waist" in the hydro lifters, providing a flow path.

You could do the HVX mods to the wbx case and it couldn't hurt, but whether it "needs" them? My experience says no. I've thought about trying it but in my engines I do other things to improve the oiling, and it is a better system to begin with, so I haven't run into any problem that the Hoover mod could cure, a solution in search of a problem. The hydros work flawlessly, and with the waisted lifters the oiling of the 1-2 top end is constant and it gets excellent lubrication.

I don't disagree that the waisted hydro lifters work as intended, just answering the question...
The "waist" duplicates the functionality of at least some of Hoovers mods.
If you are running T4 solids or T1 lifters... you lose that oil path from the "waist", and Hoovers mods become more important.

The WBX oiling system is the essentially same as a T1 save for the integrated full flow filter, and the lack of the pressure based oil "thermostat" feed to an oil cooler in the pressure bypass.

Same for the rocker arms-- No grooves in the shafts, identical to T1.

[buildabiggerboxer]

Guys, i WILL only mod the lifter oiling if my customer nags me, but on all the cases ive done lately,welding is required, as the oilways 'breakout' into daylight......be carefull.
my own motors, air cooled and wasser, run with no problems without it, apart from the lifter mods as tencent says when running bushes. the rocker gear mods are old school anyway. i like to nick a grove to the side of the rocker to spray and cool the springs.