articfriends

In the next year I'm going to flog on my next project , 500efis with good good heads, highly modified intakes etc. I will be running shaft rockers on them when done BUT on the dyno I will be experimenting with standard rockers using different ratios to try to zero in exactly where cam needs to be, ie-looking for lets say 675 hp, add ratio, has gain, needs bigger cam, add ratio, loses power, cams too big etc. I will also be advancing and regtarding the cam. Custom cam or not, unless you duplicate a exact, proven combination IF your looking for most power its going to take some work!

Black Baja

That's the nice thing about a solid cam. Just tighten the lash and see if it picks up. On a mild solid roller you can tighten the intake all the way to zero.

mike tkach

well i have learned from this thread.off the shelf peanut butter will last forever but custom blend peanut butter may not last as long!things that ma you say hhhmmmm.

mike tkach

next time i get a pizza i will add some jiffy and read my briggs&stratton manual.should make for a relaxing night.

SB

Sometimes it's not about how peanut butter is made, but who's spreading it

phragle

Sure you can use the briggs and stratton to power the industrial grade pizza dough mixer, but if it leaks even one drop of oil into the dough, the heath dept. is going to be so far up your azz it wont be worth it....

MILD THUNDER

I used peanut butter instead of epoxy, to convert my Dart Rectangle heads to peanut ports. Once it hardens, it holds up to ethonal just fine. But, it has to be Peter Pan brand. Jiffy, sets up way to quick. Like, in a jiffy.

Precision

Dynoing in full marine dress IS the correct way to dyno. If the guy that specd the cam knew anything about how a cylinder head actually worked Tim could have made more power. But in the end he was bamboozled by a kitchen table salesman with a thesaurus. (Sorry Tim). In the end his build and many others would be better off using cam lobes that have been proofed and vetted in the real world in hundreds if not thousands of engines.

Thanks to this custom cam mentality by said salesman I'm now in the position to say I told you so to two different customers that had to try these "magic cams". Neither made the power that they were claimed to, and are as agressive as we I would expect to see in class drag racing. Fortunately for this snake oil salesman he has been paid and made the handsome proffit. Unfortunately for me and my customers I now have to fix his mess.

This all could have been avoided if I had said no. We are not using any kind of experimental junk in your engines.

I understand that you have your reasons for thinking that the custom cams are the best thing since sliced bread, but I have the data to prove otherwise.

Lastly. Why isn't Bob in here defending himself? Why are you doing it for him? I spoke to two other engine builders that use to use Bob and have had a SERIOUS change of heart in the last 7 days. It would bother me if the guy I was protecting let me take the brunt of the lashings.

F-2 Speedy

GeeeeZ, I'm gonna ban myself

articfriends

I do have a set of dyno time only isky solid rollers I may also use when dynoing my next project IF cam warrants it.