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| The Turbo Super Duty Build. (Page 43/63) |
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FastIndyFiero
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DEC 30, 12:48 AM
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Using individual flanges puts less stress on the head...Thermal strains at 1200* are pretty high in aluminum. When coupled to a thick steel plate (the exhaust flange) that doesn't expand as much, it puts alot of stress on fasteners and the head. By using 4 single flanges, the stress induced on a fastener is from a 2-3" length of steel expanding instead of 18" of steel expanding. Granted, the header tubes still have to flex pretty much the same distance, but there's not really any way to get around that. Also, it saves a little weight and looks cool.
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FastIndyFiero
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DEC 30, 09:28 PM
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I put in an email RFQ for 321 stainless flanges for the 16V today with SPD Exhaust. Looks like they do really good work, I think I probably don't want to know how much these flanges are going to be. I might have them make me a collector too, but it's too soon for that.
http://www.spdexhaust.com/HomeB.html
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FastIndyFiero
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JAN 05, 04:35 PM
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I found the guy who bought Toddster's DOHC head, that had cams with it. VERY cool guy, said he didn't have a problem with me using his cams to reproduce a set for myself. He also needs a front cover though, I was hoping that I can find one so I can get dim's to make one for myself. With any luck I could have a set of cams made. I think between the two of us we should be able to figure out solutions to our common problems. If nothing else, I've met another friend along way.
Also going to be ordering some mild steel tube sometime this week and start building a prototype header.
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cowan1984
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JAN 05, 08:05 PM
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I have GOT to see this car when you get it done. You should park it behind velvet ropes and charge $50 a ride, you'll make back part of what you spent on that head! 
Seriously though, you've got to let everyone on PFF know if you put it in a show, I'm not the only one who's dying to drool in your engine compartment.
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FastIndyFiero
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JAN 14, 11:11 AM
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| quote | Originally posted by cowan1984:
I have GOT to see this car when you get it done. You should park it behind velvet ropes and charge $50 a ride, you'll make back part of what you spent on that head!
Seriously though, you've got to let everyone on PFF know if you put it in a show, I'm not the only one who's dying to drool in your engine compartment. |
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Hehe, when I get done I'll be too old and senile to drive. I'll have to pay for someone to drive me around in it. Thanks for the compliment 
Right now I'm undertaking a COMPLETE inventory of my DOHC equipment, every nut, bolt, and random part. I was also going to order steel for my proto exhaust but I've been having a hard time finding 1-7/8" diameter bends on a 4" CLR, where it exits the head. That may be something I need to change in the design.[This message has been edited by FastIndyFiero (edited 01-14-2008).]
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FastIndyFiero
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JAN 30, 10:53 AM
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I've been talking to a couple camshaft manufacturers that do one-off camshaft cutting/grinding. Keep in mind that no camshaft cores exist for this head, so the core has to be cut on a CNC lathe before it's ground. There are no cam grinding master plates either, which means that it also has to be CNC ground. When you factor in those requirements, prices go up and available sources go down to practically nothing. So far I've found 2 companies that can do this.
One is Integral Cams Inc. They do ground-up cam design. I would send them physically measured head flow numbers as well as complete valvetrain and intended engine specs, and a sample camshaft or a drawing. From there they would design intake and exhaust profiles and do a complete analysis on the entire cycle throught the RPM range...That's pretty cool.
BUT, I got quoted $2500 from the point where I send them sample cams to where I'm holding my own 2 heat-treated billet perfect camshafts.
The other place is Custom Camshaft Co. I have yet to get back with them on details, but it looks like they might be cheaper, though I'm not sure they have the same design capability.
Goodbye $$$$$.
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The_Stickman2
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JAN 30, 03:11 PM
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Mr.PBody
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JAN 30, 05:38 PM
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I think so, hes spent so much on the head itself and the head it so rare, may as well use it.
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FastIndyFiero
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FEB 12, 05:11 PM
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The original cams:
The passenger-side thrust/support bearing:
I don't have the bearing all the way in as it seems to be press fit, but you can see the idea.
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Mr.PBody
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FEB 12, 05:18 PM
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I am getting all giddy, come on get those cams made!
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