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  #21  
Old 13th January 2020
RicThompson RicThompson is offline
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After Web Camshafts got a look at my SIFTON Titan cams they notified me that they did not have profile. They could do centers and create a profile which would be significantly more expensive. Cost prohibitive. I called Black Widow Cams and made arrangements with Web Camshafts to ship direct. Black Widow has done SIFTON Titan cams and will refurb entire set for under $600. The folks at Web Camshaft were very nice but they haven't done a significant number of HD cams.
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  #22  
Old 13th January 2020
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Thanks for the update. Please continue as you complete the process.

Was the $600 to do all 4 shafts?
Were all 4 in a "damaged" condition?
Was it their suggestion to do all 4 for a preventive measure?
Thanks in adv for the answers.
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  #23  
Old 13th January 2020
RicThompson RicThompson is offline
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Quote:
Originally Posted by Iron Mike View Post
Thanks for the update. Please continue as you complete the process.

Was the $600 to do all 4 shafts?
Were all 4 in a "damaged" condition?
Was it their suggestion to do all 4 for a preventive measure?
Thanks in adv for the answers.
$600 for all 4.
#4 had actual hardened layer chunk missing, #3 had pit. Web Camshafts inspection revealed all 4 lobes worn out.

Black Widow will weld and cut all 4 lobes. Rod used in welding is much harder than the original hardened layer.
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  #24  
Old 13th January 2020
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I remember DR DICK mentioning the minus - minus were known to knock the corners off.due to their profile I expect.i haven't looked at mine for a while.maybe I should.come to think of it I did have a peek when I swapped out the lifters and lifter blocks 2 yrs. ago.
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Last edited by brucstoudt; 13th January 2020 at 23:20.. Reason: have a peek
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  #25  
Old 13th January 2020
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Quote:
Originally Posted by brucstoudt View Post
I remember DR DICK mentioning the minus - minus were known to knock the corners off.due to their profile I expect.i haven't looked at mine for a while.maybe I should.come to think of it I did have a peek when I swapped out the lifters and lifter blocks 2 yrs. ago.
Black Widow cams told me they have done several sets of Titan cams that were basically falling apart. I guess they all have a service limit.
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Old 13th January 2020
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yeah it's a square looking lobe.
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  #27  
Old 13th January 2020
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And how they are treated, over sprung is bad, under sprung is worse especially when reved up. Aluminum pushrods aren't going to help things either.
Those cam profiles are not made to last, power has a price.
Look at Lienweber profiles! I have seen stairs with more rounded corners!
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Old 13th January 2020
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Yeah, but stairs will make your legs hurt, Leinwebers stretch your arms out!
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funny you should mention leinewebers because I was thinking about them after my last post.why aren't they falling apart? with all the material ground off their base circle.
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Obviously different material and heat treat process.

The Leinwebers purposely abuse the valve train so they were made better so the other parts will fail before the cams?

It's all give and take, push and shove, you make a gain here and something over there breaks. You could spend a lifetime chasing this stuff and never win.

When I put one together I just hope the stuff that breaks is easy and cheap to replace and doesn't break something else when it fails.
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