371 cams into GL1100

[Ansimp]

slabghost » Tue Dec 17, 2013 2:20 pm[/url]":16i850x5]
Personally I think the valves should be set as specified for the cam used. 75 cam set valves to 75 specs to get the intended lift and duration for that cam. I also prefer to set valves a bit loose so they last a bit longer before needing adjusted and tight tends to allow valves to burn.

+1

 

[gingerbreadman]

slabghost » Mon Dec 16, 2013 9:20 pm[/url]":32b5d9yb]
Personally I think the valves should be set as specified for the cam used. 75 cam set valves to 75 specs to get the intended lift and duration for that cam. I also prefer to set valves a bit loose so they last a bit longer before needing adjusted and tight tends to allow valves to burn.

Our rule of thumb waaay back right after my pet dinasoar died, on our street drag cars was, if we wanted more MPG we'd leave 'em loose; but if we wanted more go, we'd subtract 1 to .003 from the spec.s of the car/engine. Could mean the difference between a win or loss!
I would think what everyone SHOULD be talking about is the difference of solid vs hydrolic "lifters", because the older ones were solid and the newer ones were hydrolic. Again, my knowledge hearkens back to my street racing days, but you can not pair up solid lifters with a hydrolic cam, nor a solid lifter cam with hydrolic lifters. Instead of a bump stick you'd end up with just a weird lookin' cast iron stir stick. Heavy to use, too!

 

[dan filipi]

I don't see any point in talking about hydraulic lifters vs solid lifters when talking about 1000 through 1200. They all have solid lifters, the only difference is 1200 has hydraulic adjusters.

 

[gingerbreadman]

dan filipi » Wed Dec 18, 2013 2:47 pm[/url]":34fdeho5]
I don't see any point in talking about hydraulic lifters vs solid lifters when talking about 1000 through 1200. They all have solid lifters, the only difference is 1200 has hydraulic adjusters.

OK, Dan, I've been taken to the wood shed about that one. I've argued about that on SGW site and especially with our good friend Capt Midnight about "lifters" on an overhead cam engine, because technically ya can't have "lifters" above the camshaft.
Now, ya talk about adjusters, and that just doesn't make sense ta me cuz I'm just ignorant! I don't get how an adjuster can be hydraulic. Maybe y'all can learn me sometime 'bout them. oh2:

 

[gingerbreadman]

slabghost » Mon Dec 16, 2013 9:20 pm[/url]":1g2al2k4]
Personally I think the valves should be set as specified for the cam used. 75 cam set valves to 75 specs to get the intended lift and duration for that cam. I also prefer to set valves a bit loose so they last a bit longer before needing adjusted and tight tends to allow valves to burn.

That, too, makes total sense. It might also affect the mileage a little, maybe not. I can't imagin .001 making any difference in much of anything.

 

[dan filipi]

Lol, captain midnight.....You and I can have a discussion in private about him sometime but I see him as a dirty word around here. Enough said about him on this forum.

Yes 1200 uses a clever way of maintaining tappet clearance. The rocker center shafts are concentric to enable the rocker to move in and out in a sense.
There is a hydraulic "piston" that turns the center shaft. Quite ingenious.
In the 1200 repair manual there's a picture of the parts and might explain better how the system works than I can.

 

[gingerbreadman]

dan filipi » Thu Dec 19, 2013 1:36 pm[/url]":jtkblc98]
Lol, captain midnight.....You and I can have a discussion in private about him sometime but I see him as a dirty word around here. Enough said about him on this forum.

Yes 1200 uses a clever way of maintaining tappet clearance. The rocker center shafts are concentric to enable the rocker to move in and out in a sense.
There is a hydraulic "piston" that turns the center shaft. Quite ingenious.
In the 1200 repair manual there's a picture of the parts and might explain better how the system works than I can.

TOTALLY COOL!!! I'll look it up in my automatic......er, manual, thanks!
I can see, as little as you got into it, how that design of "in and out" of the rocker (Ted Nugent) could really rock! :music2: Like the SBC engine have stock rocker ratio of 1.5, and you can order through just about anybody 1.6 ratio rockers. If you do the complete set of 18 rockers, and nuthin else, you can turn an old '80s dog of a sled into a respectable street light chaser! Fun, too.