Author Topic: Custom cams, Volunteers needed (Read 15508 times)

Justin · « **Reply #45 on:** December 16, 2005, 05:27:06 am »

Please let us know on the solid lifter cams, thats all I have running and laying around for parts is solid lifter. I have yet to see a Hydralic head here in michigan, and I have looked at 7 different diesel vw's in the past year

later
Justin

QuickTD · « **Reply #46 on:** December 16, 2005, 07:03:02 am »

It is nearly impossible to make a performance cam from a stock blank for a solid lifter engine, there simply isn't enough adjustment range in the shims to obtain the proper clearance if the base circle diameter is reduced. The lift/duration of a reground performance cam are modified by reducing the base circle (think of it as increasing the height of a mountain by digging the valley deeper). The hydraulic lifters have sufficient travel to take up the extra clearance. With solid lifters you might luck out if the head had previously used shims toward the thin end of the range. If the head required thick shims to begin with you would probably run out of adjustment with the performance cam. To build a proper solid lifter cam you would probably need to start with a blank cam, making it a very expensive proposition.

Justin · « **Reply #47 on:** December 16, 2005, 09:36:31 am »

autozone sells new camshafts for hydralic head diesel for $146. If you could source them direct and then get them ground it might be worth it, lets say you have a hydralic cam laying around is it large enough to regrind and use it in a mechanical head? would it hold up?

later
Justin

935racer · « **Reply #48 on:** December 16, 2005, 04:16:21 pm »

QuickTD, good to know about the solid lifter detail, I hardly ever see solid lifter diesels and almost never work on them.

Audi80 · « **Reply #49 on:** December 17, 2005, 05:32:03 am »

How about lash caps? I was going to send my solid cam to regrinder.

QuickTD · « **Reply #50 on:** December 17, 2005, 06:45:42 am »

Quote from: "Audi80"

How about lash caps? I was going to send my solid cam to regrinder.

Sure, that would work it's just a bit more trouble. If the base circle is measured before and after the regrind, the proper caps can be selected. The retainers are pretty close to the end of the stem in a VW diesel, "normal" lash caps might require modification to fit without contacting the retainers.

Anyone could use a passenger performance cam if they used lash caps. It's just not an easy "bolt on" like the hydraulic cam would be.

Author Topic: Custom cams, Volunteers needed (Read 15508 times)

935racer

Audi80