Mystery motor, again |
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Mystery motor, again |
914werke |
Jul 12 2023, 12:24 PM
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#1
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"I got blisters on me fingers" Group: Members Posts: 10,072 Joined: 22-March 03 From: USofA Member No.: 453 Region Association: Pacific Northwest |
So I semi regularly get mtr's from abandoned projects
In some cases, seemingly fresh builds. Often with no info. Has anyone had success ID'ing the cam mfg and typ via pulling the pump? |
Superhawk996 |
Jul 12 2023, 01:08 PM
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#2
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914 Guru Group: Members Posts: 5,830 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch |
Interested in the response to see what others have found.
I have a mystery cam. There was nothing on the face of the cam to Identify it. Nothing on it even when it was removed from the engine but definitely had an aftermarket cam gear so not OEM. On the other hand, I know some of the older Web Cam's and Engle's did have ID of some sort- probably luck of the draw. |
Shivers |
Jul 12 2023, 01:15 PM
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#3
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Senior Member Group: Members Posts: 2,381 Joined: 19-October 20 From: La Quinta, CA Member No.: 24,781 Region Association: Southern California |
Some cam grinders did put the info on the end of the cam. I put a few in my V8’s and two did.
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914werke |
Jul 12 2023, 02:31 PM
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#4
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"I got blisters on me fingers" Group: Members Posts: 10,072 Joined: 22-March 03 From: USofA Member No.: 453 Region Association: Pacific Northwest |
The first check is that is or is not an unmolested stock cam with riveted gear.
After that Web(cam), for instance, had in the past stamped its grind in the exposed flange so it was ...sometimes possible to figure it out |
r_towle |
Jul 12 2023, 04:20 PM
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#5
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Custom Member Group: Members Posts: 24,574 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States |
I’ve had a few with no markings.
Setup a jig and measure, that is what I do. If you don’t want to crack the case, setup a jig on the head. Measure, then math. |
914werke |
Jul 13 2023, 08:56 AM
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#6
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"I got blisters on me fingers" Group: Members Posts: 10,072 Joined: 22-March 03 From: USofA Member No.: 453 Region Association: Pacific Northwest |
I’ve had a few with no markings. Setup a jig and measure, that is what I do. Right, but not everyone has the degree wheel, stand, dial indicators ect necessary. If you don’t want to crack the case, setup a jig on the head. Measure, then math. The hope is by simply pulling the pump (typical when resealing) you can easily determine a mystery motors cam. (IMG:style_emoticons/default/smile.gif) |
r_towle |
Jul 13 2023, 06:57 PM
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#7
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Custom Member Group: Members Posts: 24,574 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States |
Harbor freight for the dial indicator ( I don’t need a massive reason to go to HF)
Cardboard, patience and some sharp pencil for a degree wheel (you don’t need 360 degrees marked. |
targa72e |
Jul 13 2023, 11:28 PM
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#8
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Member Group: Members Posts: 262 Joined: 11-September 16 From: colorado Member No.: 20,392 Region Association: None |
I have printed degree wheel off the internet. I first sized it for what I was doing on computer and the then attached it to something a little more solid. Worked fine.
john |
Al Meredith |
Jul 14 2023, 11:34 AM
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#9
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Senior Member Group: Members Posts: 960 Joined: 4-November 04 From: Atlanta, ga Member No.: 3,061 |
Yes, if the original rivets are on the cam gear then chances are it is a stock cam BUT I have one on the shelf with a stock gear and rivets but it has been reground and has numbers on the end of the cam . If you take it out you will notice a smaller base circle.
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