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Old 05-19-2008, 09:55 PM   #21
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Great read indeed Dan!
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Old 05-19-2008, 11:39 PM   #22
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Sav, I'm sure that you'll take some sort of "Mechanisms" class at SLO. For a chapter or two during that class I'm sure you'll be going cam crazy.
hell he can take the internal combustion engine design class if it's still offered. our textbook was the bosch bible.
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Old 05-19-2008, 11:54 PM   #23
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Y8s, that class does sound more applicable. While I've heard a few of the Bosch books referred to as a bible, which one in particular are you talking about?
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Old 05-20-2008, 12:28 AM   #24
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In my experience, MT.net members seem to know exactly what they want, that's why I'm asking them to chime in.
It is *crystal* clear you have never met our good friend Hustler.



I got your 3-gauge pod in this weekend, Bill. Looks perfect.
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Old 05-20-2008, 01:47 AM   #25
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Originally Posted by jasonrobo02 View Post
Y8s, that class does sound more applicable. While I've heard a few of the Bosch books referred to as a bible, which one in particular are you talking about?
doh, my bad. it wasn't the bosch bible, it was heywood's internal combustion engine fundamentals.

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Old 05-20-2008, 12:49 PM   #26
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well i know HKS makes a set of cams for the 1.6 in a 256 and 265 duration, and i know a couple people running 256 HKS cams on their evo's....it has a nice agressive rumble to it,but thats a different car and motor

in other words maybe a 256 would be good for duration?
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Old 05-20-2008, 08:19 PM   #27
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Bill, what about offering 2 options for cams. Let's say one for a '99 head with a "standard" port&polish and the oversized valves, optimized for a standard flow that one might see with this combo on a '99 head (I say '99 because I assume anyone dropping the coin on a setup like this will be applying the parts to the best head available), and another cam that's blank, ready for a cam shop to install the valves, flow-test the head, and then grind the cam to the user's specs.
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Old 05-21-2008, 10:28 AM   #28
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Who makes cam blanks for the Miata?

I know we at Jesel can, but they'd be expensive.
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Old 05-21-2008, 10:37 AM   #29
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Tim, how expensive? i have been trying to get an idea what to expect once I get in the head. Someone please give me an idea. (a realistic one)
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Old 05-21-2008, 11:45 AM   #30
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Originally Posted by Zabac View Post
Tim, how expensive? i have been trying to get an idea what to expect once I get in the head. Someone please give me an idea. (a realistic one)
Well you know what they say,
"If you have to ask, then..."

This of course isn't anything official, but based off some recent OHC cams we've done:

One time engineering/programming: ~$250 per cam (I think both intake and exhaust cams are the same, in terms of cam cores)

After that each cam is around $400. This is just for a cam core; for most cam materials, you'd need to copper plate it, rough grind the lobes, heat treat the cam, then final grind the lobes.
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Old 05-21-2008, 11:58 AM   #31
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Well you know what they say,
"If you have to ask, then..."
I hear ya Tim...you are correct, but we can all still play the lottery and hope, lol
The head is last on my list and I have really not done a lot of reasearch on optimum components to use. I will more than likely source a 99-00 head and have it built by the same guy who is doing my machining on the block, he is good. I am getting to this prematurely, but I'd still kind of like to know what's waiting for me, curiosity killed the cat.
So you are somewhere in the $800 range for properly done cams to your builders spec, right?

Also, doesn't mazcomp sell heat treated blank? I though I read something about that...
Thanks Tim
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Old 05-21-2008, 12:06 PM   #32
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Originally Posted by Zabac View Post
I hear ya Tim...you are correct, but we can all still play the lottery and hope, lol
The head is last on my list and I have really not done a lot of reasearch on optimum components to use. I will more than likely source a 99-00 head and have it built by the same guy who is doing my machining on the block, he is good. I am getting to this prematurely, but I'd still kind of like to know what's waiting for me, curiosity killed the cat.
So you are somewhere in the $800 range for properly done cams to your builders spec, right?

Also, doesn't mazcomp sell heat treated blank? I though I read something about that...
Thanks Tim
If Mazcomp sells blanks then that's where to go for them. Because with us you'd be at $800+$250=$1025 guestimate for 2 cam blanks that aren't even coppered or heat treated yet, let alone ground to specs. Most of the cores we do end up costing the customer thousands (we just do the initial machine work, no heat treat or lobe grinding). It's overkill for street cars or anyone using "standard" heads. Now if you were to build a billet head from scratch and position the valves/journals/bearings in a different/better spot, we can make the one-off tool-steel cam core.
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Old 05-21-2008, 12:09 PM   #33
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Damn, I missread your post then, my bad.
It makes sense though, overkill for OE heads I'm sure, no need to reinvent the wheel I guess.
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Old 05-21-2008, 12:09 PM   #34
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Comp does offer cam blanks
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Old 05-21-2008, 06:21 PM   #35
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Interesting plans.

Bill - I already have a built head, but with stock cams. I'd be more than happy to give you before and after feedback on the cams if you are interested...
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Old 05-21-2008, 06:28 PM   #36
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Matt, is it a 99-00 head by any chance?
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Old 05-21-2008, 06:30 PM   #37
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its a VVT head with all the VVT stuff removed.
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Old 05-21-2008, 06:43 PM   #38
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Even with the VVT removed, I don't see how you could (at least "easily") run a pre VVT intake cam. Exh cam, not a problem.
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Old 07-01-2008, 11:42 AM   #39
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sooo, about those turbo cams....
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Old 07-01-2008, 12:01 PM   #40
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Originally Posted by wes65 View Post
sooo, about those turbo cams....
I'm still educating myself about cams, so no ETA at this point.

Please feel free to barrage me with tech articles.

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