Crower F16611 cams - Alfa Romeo Bulletin Board & Forums
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post #1 of 20 (permalink) Old 08-18-2019, 02:40 PM Thread Starter
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Crower F16611 cams

Came into possession of these today. Thoughts with respect to a fast 2L motor with 1mm oversized valves, mildish porting, 10:1 motronic, Wes Conklin oil pump, this was one of Wes’s LEMONS car 01615 motors that I acquired. The cams originall were IAP 92650 as I understand. Haven’t decided yet SPICA HP from Wes Ingram or carb conversion. I don’t know much (pretty much zero) about cam design so any guidance would be appreciated. Plus, these timings are so different from everything in Jim Ks book — any help gratefully appreciated—Especially from Richard ! Prior to getting these i was going to use 10548 intake and 92 motronic exhaust. Thanks— bob
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74 GTV with 10548's and Ingram pump
71 Spider 1750 BOMBER ; 1995 LS 78K tight fast car
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post #2 of 20 (permalink) Old 08-18-2019, 08:09 PM Thread Starter
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Are these Alquati A35 clones??? if so might be a bit much for me/this motor/this application (non racing, 'hot' - ish street)??

74 GTV with 10548's and Ingram pump
71 Spider 1750 BOMBER ; 1995 LS 78K tight fast car
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post #3 of 20 (permalink) Old 08-19-2019, 06:06 AM
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.387 x 25.4 = 9.8mm lift. Am I doing that right? That's about .3 more than 2000 cams, though more duration here. Duration without much more lift I would think would not increase torque much but would move the power band up. Maybe the 106 LC recommendation compensates?
You have a pic of the lobe?

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post #4 of 20 (permalink) Old 08-19-2019, 07:18 AM Thread Starter
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Here it is with the alquati from jim k book
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74 GTV with 10548's and Ingram pump
71 Spider 1750 BOMBER ; 1995 LS 78K tight fast car
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post #5 of 20 (permalink) Old 08-19-2019, 08:25 AM
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The Alquati has 11.03 lift; that's pretty different.
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post #6 of 20 (permalink) Old 08-19-2019, 08:35 AM Thread Starter
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I thought so too, but are we not supposed to add the 0.050" to the lift as expressed in the sheet? That brings us up to 11.09 or so I think.

Do you still have the IAP cam that was in the motor originally?

74 GTV with 10548's and Ingram pump
71 Spider 1750 BOMBER ; 1995 LS 78K tight fast car
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post #7 of 20 (permalink) Old 08-19-2019, 08:38 AM
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Was this my motor? I'd forgotten that.
No, though I have a couple RJR cams in another head. Don't offhand recall what they are though. I could look it up.
I just bought the Alquatis that were on the BB here. I have Alquati A32 in my GTV and Super, intake side, best cams I've ever had.
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post #8 of 20 (permalink) Old 08-19-2019, 08:42 AM Thread Starter
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yeah this was the Wes Conklin motor that I got from you. Finally, finally trying to set it up! I'd like something cam-wise a bit hotter than 10548 but not crazy hot, and not something that will require head machining, etc. If these are no good for this application thats fine, just want to find something that will work!

74 GTV with 10548's and Ingram pump
71 Spider 1750 BOMBER ; 1995 LS 78K tight fast car
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post #9 of 20 (permalink) Old 08-19-2019, 08:44 AM
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I would think these are a little mild for this motor, but depends on your intended use.
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post #10 of 20 (permalink) Old 08-20-2019, 10:35 AM
Richard Jemison
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Cams

Well, if these cams are the ones described in the Crower sheet, they are less cam lobe than in the no good emission cams that were used on USA delivered cars from `71-'89..

I suspect they are replacement cams for stock alfa`s made from a "similar" master Crower had on hand. No builder makes a master to build a similar cam, or a pair of cams "Copied" would have a $600.00 additional charge on them for having a master built to run on the grinder...

You should measure the lobe lift using a digital caliper. First the BC (side to side)and at that opening then zero out the "reading" and then measure heel to toe. that measurement will be an approximate lift. If these were the 11mm cams that were on the BB the lift should be .433"(pr 11mm if using metric)

Let me know what you find.

Andrew, what makes you believe yours are Alquati cams. Are they engraved or is there "supposition" that they are Alquati.

The only way to really know what cams you have is to have them CamDoctored.

Richard Jemison
RJR Racing

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post #11 of 20 (permalink) Old 08-20-2019, 07:06 PM Thread Starter
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BC IS 26.62 mm , top to bottom on lobe is 36.18 mm ; seems like 9.5 ish? Ugh. Crappy cams now what?

74 GTV with 10548's and Ingram pump
71 Spider 1750 BOMBER ; 1995 LS 78K tight fast car
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post #12 of 20 (permalink) Old 08-21-2019, 06:00 AM
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Quote:
Originally Posted by goats View Post
BC IS 26.62 mm , top to bottom on lobe is 36.18 mm ; seems like 9.5 ish? Ugh. Crappy cams now what?
Buy some good cams from Richard and maybe supply these as cores? It sounds like this engine would be a good fit with a matched intake and exhaust pair, beyond a 10548 intake and S4 exhaust.

Rich Hanning
'65 Sprint GT, '78 Spider, '88 Quad
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post #13 of 20 (permalink) Old 08-21-2019, 06:32 AM
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@goats, Rolex?

ALFA ANDY
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post #14 of 20 (permalink) Old 08-21-2019, 06:56 AM
Richard Jemison
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Lifts

Quote:
I thought so too, but are we not supposed to add the 0.050" to the lift as expressed in the sheet? That brings us up to 11.09 or so I think.
No! that # is the duration when the lobe lift at .050 is measured with 0 lash.

Where did you get these? How were they "represented" as to lift?
Best to just return them for a refund.

If you want, you might consider having them CamDoctored. You could send 1 to WebCam in Riverside and have Faith CamDoctor it to get a real pic. If they have a lot less duration at lifts from .010 to .040 and more duration than the stock 10520 or 10502 stock cams they could be used as exhaust cams. Or you could call my West Coast wife(Faith Jemison) or Mom at 951-369 5144 and drive one or both over (Riverside) and you might get a tour of the place while they cam doctor it.

Be sure to have Faith hold up a pair of Alfa cams and take a pic. Be sure to get her new "Blouse Buddies" in the pic. That should qualify for the thread "Women And Alfas" thread!
I`ll copy this to them so they can be prepared!

Richard Jemison
RJR Racing

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post #15 of 20 (permalink) Old 08-21-2019, 07:17 AM Thread Starter
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Uh this sounds dangerous — blouse buddies? WOW! Richard unless you think otherwise, why not just get a set of cams from you for my application? I’d feel way more confident ; these cams don’t matter really if they are no good for me! What would you recommend? Thanks bob

74 GTV with 10548's and Ingram pump
71 Spider 1750 BOMBER ; 1995 LS 78K tight fast car
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