Camshaft guessing game, Let's play... Options

[groot]

I have no idea what camshaft this is, so I was hoping somebody could identify it for me.

I measured the lift to be between .283 and .289" at each lobe.

There's a ridge that goes 1/2 way around the cam just before the second bearing.

Here's a pic...

[Thorshammer]

Over the past 20 years I have purchased 40-50 cams from Elgin. Now this pales in comparison to what others buy. I am sure Jake buys cams in the 100's. But for me, it's alot.

The broken camshaft I had, was clearly a defect in workmanship. My dyno cams(2 pairs) (also Elgin) lasted many hours on the dyno, while this one lasted less than an hour. Thanks Dema, No quarter given none expected.

One important thing everyone must know, Dmitry Elgin does not develop camshaft profiles. They are developed by Dave at Megacycle cams. Then Elgin pays for the cam master and the grinding begins. Then he replicates the cams as many times as possible.

Elgin may be an okay machinist, but a cam developer, he is not. Go to whomever you want to. If it works for you use it. If you have had success, use it. If your motor builder can make it work, Yes again, use it.

Heres how I based my decision to not use Elgin any longer. Piss poor customer service, threw my broken cam shaft out, and charged me full retail for the replacement. Thats Bullshit. He does not design his own cams. Lastly, the 911 cams spin in opposite directions, this causes the 1,2,3 bank to have different rocker arm geometry than the 4,5,6 cylinder does. This I have confirmed via cam doctor. The cam grinder I use now (Steve Gruenwald at Integral Cams) understands this difference and the cams are ground using 4 different programs (CNC) or 4 different masters. Elgin claims this makes no difference. I strongly disagree. This is why the left bank of cylinders runs cooler and acts as if it needs one step leaner main jets. After checking the carb settings repeatedly, even swapping the carbs left to right on the dyno, it still ran less than optimal on the left bank. Now I have the answer. My new cams are waiting to be installed and the dyno time will commence. This should confirm that Elgin does not have a clue. You would think with what I recently spent, he could buy himself a clue??

Erik Madsen

PS:

I knew a guy one time that did development work on type 1's. Everyone thought he was a whack, cause he had different grinds for making power, cam grinds for different engine combinations to keep them cool and, even different weight cars, he did alot of work. Kind of like what Jake is telling you guys. Oh, by the way, the guy that did type ones.... Gene Berg.