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Title: about time for some new head designs isn't it? Post by: Jim Ratto on September 02, 2009, 21:51:39 pm guys, how about a die cast head with VW fins, and valve cover rail, but with S/F or "spread port" intake port AND angled exhaust ports. Get away from the stock Volkswagen intake flange design and get some port area and a nice straight shot into from butterflies.
Longer valves? Title: Re: about time for some new head designs isn't it? Post by: Zach Gomulka on September 02, 2009, 22:22:29 pm I like it. A type 4 intake flange would work good for this, don't you think? Then you already have intake manifolds available.
Title: Re: about time for some new head designs isn't it? Post by: Jim Ratto on September 02, 2009, 22:49:38 pm I like it. A type 4 intake flange would work good for this, don't you think? Then you already have intake manifolds available. I like it. 8)Title: Re: about time for some new head designs isn't it? Post by: stealth67vw on September 03, 2009, 00:25:17 am How bout the MS 230 heads? They don't have angle exhaust ports but everything else your asking for and they use available Super Flo manifolds. They claim 15% more fin area than an 044 and 50% more than S/F, A/F or C/E heads.
http://www.jpmotorsport.se/s/ms230.htm (http://www.jpmotorsport.se/bilder/ms230/ms_230_topp_6.jpg) (http://www.jpmotorsport.se/bilder/ms230/vippstall_ms_230_3.jpg) (http://www.jpmotorsport.se/bilder/ms230/ms_230_topp_5.jpg) Title: Re: about time for some new head designs isn't it? Post by: Diederick/DVK on September 03, 2009, 08:47:27 am I hear those heads cost as much as I paid for my 67 five years ago. :o
Nifty ideas tough, carry on. :) Title: Re: about time for some new head designs isn't it? Post by: Jon on September 03, 2009, 11:46:01 am Imagine how long it takes to machine those fins... :o
You get what you pay for... Title: Re: about time for some new head designs isn't it? Post by: JS on September 03, 2009, 12:19:36 pm I hear those heads cost as much as I paid for my 67 five years ago. :o Nifty ideas tough, carry on. :) How much does it cost to get the same HP number out of a set of CB wedgeports? As much as a '67, I'd guess... ;) Last time I checked they were around $3200 for the pair. Title: Re: about time for some new head designs isn't it? Post by: Diederick/DVK on September 03, 2009, 12:24:36 pm i'm not expressing any critique on the heads themselves. as far as i'm concerned these heads are astonishing, but so is the price. i got the impression jim was looking for something slightly more accessible, say, in the range of ultra wedgeports? but i might be wrong. ;)
Title: Re: about time for some new head designs isn't it? Post by: JS on September 03, 2009, 13:00:12 pm Title: Re: about time for some new head designs isn't it? Post by: Jon on September 03, 2009, 14:31:10 pm With S/F or "spread port" intake port AND angled exhaust ports. If they in addition to be angled out 45 degrees were angled 45 degrees down, you could have shorter exhaust... a plus for higher rev applications... Title: Re: about time for some new head designs isn't it? Post by: Tomas/DBR on September 04, 2009, 13:06:33 pm Anyone who know more about these DRD heads?
http://www.thesamba.com/vw/classifieds/detail.php?id=828811 Title: Re: about time for some new head designs isn't it? Post by: wph on September 04, 2009, 21:24:12 pm Old skool... by Jeff Denham. Like a lot...
(http://images.thesamba.com/vw/gallery/pix/357740.jpg) Title: Re: about time for some new head designs isn't it? Post by: TexasTom on September 04, 2009, 22:56:03 pm Dang thosa are FINE!
Jeff is the MAN. Title: Re: about time for some new head designs isn't it? Post by: Lids on September 05, 2009, 22:30:41 pm here you go:
Pat Downs said: We will be releasing our new cylinder head in a few weeks. The head is our Strip Dominator. We went in with Autocraft and reingineered the 910, adding many improvements. The head will come CNC ported with 50x38mm 11/32 titanium valves, titanium retainers, titanium locks, barillium seats. I will post flow numbers on our website next week. I can say that the head flows over 300cfm@25" in a 94mm bore.The head flows extremely well from .100 lift up to .800 I can post some pics if your interested. I am really excited about this new head. A new manifold is being done that will require no welding and will also come CNC ported. I expect pricing for the completed heads with CNC porting, CNC match ported manifolds and a new sheetmetal type valve cover to be in the low $3,000.00 range. Pat Downs The first run of heads are going to be 94mm bore with 50 x 38 valves. Our product line is really based around the stock stud pattern so we wanted to do the first run as 94mm only. You can run up to a 96.9mm bore with the stock stud pattern. One very nice change we made to the casting is a solid rocker arm pedestle that runs accross the entire length of the rocker box. This strengthened the head and allows a broad range of rocker arrangements. I am currently working on a rocker arrangement that uses 2 shafts, each having 3 mounting points. Rocker ratio will be 1.6, 1.7 and maybe 1.8 not sure on the 1.8's yet. I am also working on a valve spring that will set up like a flat tappet spring using 1.800 installed height but will allow lifts to .800 with a roller cam. This way, we do not have to run two different length valves if a roller cam will be used with the head. I will get some pics posted later today. Here is the flow chart on the head. I flowed the head three ways, 94mm bore with a full chamber, 94mm bore with a .200 deep flycut and 96mm bore with a .200 deep flycut. Reason being is that most people who buy this head will flycut it for compression. I also wanted the 96mm bore customers to see what the head flows with a .200 deep 96mm bore. 94mm bore with a .200 deep flycut 100-66 200-131 300-187 400-233 500-267 600-290 700-299 800-308 94mm chamber with a full chamber, no flycut 100-62 200-118 300-165 400-212 500-248 600-275 700-290 800-301 96mm chamber with a .200 deep flycut 100-71 200-138 300-191 400-238 500-272 600-295 700-305 800-321 (http://i155.photobucket.com/albums/s303/lawlessjr/StripDominator1.jpg) (http://i155.photobucket.com/albums/s303/lawlessjr/StripDominatorIntake2.jpg) |