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#61
02-17-2007, 01:47 AM
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Jim,
This is the design I would think might make about 20 more than the Victor, but it is big bucks. Anyway just and idea next time you try a sheet metal intake. Lynn |
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#62
02-17-2007, 02:43 AM
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Lynn,
Send it down here and I will test it against the Victor. What is the beginning runner area? That one looks new...have you tried it yet? We have made curved, paired runners with a taper angle and all I remember is that they will try one's patience. We had a quite a bit of scrap making that one. :-) |
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#63
02-17-2007, 02:55 AM
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Another try at posting port molds
Original Pontiac versus RACE tune up
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#64
02-17-2007, 09:28 AM
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Lynn.I like the angle of the runners.Was this to improve velocity?What is the height from floor to top of runner.That intake looks very impressive and certainly not cheap to build.Is this for your Super Stock motor.What"s the runner length if you don't mind me asking.
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#65
02-17-2007, 11:34 AM
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Dyno Sheet and Flow numbers
Dyno sheet (screen shot) attached.
Flow numbers: The heads were bench tested many, many times. The final numbers are below. Tests performed at 28" H2O pressure differential; plenum temp 68 deg. (intake tests) and 90 deg (exhaust tests) Intake Flow CFM Lift Flow w/ radiused inlet Flow w/sheet intake & 1050 .100 71.92 71.9 .200 139.0 138.4 .300 205.3 201.8 .400 257.9 255.9 .500 289.2 286.0 .600 315.0 307.2 .700 318.0 311.5 .800 321.0 316.3 Exhaust w/2" o.d. pri tube header attached Lift Flow .100 58.61 .200 110.9 .300 146.4 .400 169.6 .500 182.3 .600 195.0 .700 202.1 .750 206.0 |
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#66
02-17-2007, 11:47 AM
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im getting about 2.2" tall with a 1.33" wide and 3/16" radius- are my calcs correct?
thanks, jim |
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#67
02-17-2007, 11:54 AM
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When will this engine see some track time? Wondering how it will run
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#68
02-17-2007, 08:02 PM
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Quote:
Lynn |
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#69
02-17-2007, 08:28 PM
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Quote:
I will get one for me, but all my money is in about 4 other projects. Jim, Those port molds are impressive. Mind labeling them for us? Where is the minimum CSA? Lynn |
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#70
02-17-2007, 08:39 PM
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Quote:
What is that rubber stuff you molded that with and where do you get it?
__________________
Paul Carter Carter Cryogenics www.cartercryo.com 520-409-7236 Koerner Racing Engines You killed it, We build it! 520-294-5758 64 GTO, under re-construction, 412 CID, also under construction. 87 S-10 Pickup, 321,000 miles 99Monte Carlo, 293,000 miles 86 Bronco, 218,000 miles |
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#71
02-18-2007, 01:51 AM
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7T2,
You're close...get to grindin' And keep the epoxy handy. slowbird, Trying to get it in the car the way I want it. It is resisting. Track opens next weekend. Hopefully we will get there sooner than later. Lynn, 2.85 sq in gtofreek Rubber stuff = smooth on |
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#72
02-18-2007, 02:51 PM
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Quote:
I got that, but where? push rod? valve? short turn?   Lynn |
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#73
02-18-2007, 04:43 PM
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Awesome!
Great work Jim! looks like you're quite the fabricator, where can I get a set of those valve covers?
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#74
02-18-2007, 10:23 PM
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Quote:
Jim, did you look into the port intruder setup to remove the headbolt sleeve and sink the headbolt in the shortturn area?
__________________
 1963 Cat SD Clone (old school) streeter 1964 GTO post coupe, tripower, 4speed (build) 1965 GTO 389 tripower, 4 speed, driver 1966 GTO dragcar 1966 GTO Ragtop 1969 Tempest ET clone street/strip 1969 GTO Judge RA lll, auto 1969 GTO limelight Conv. 4speed go and show (sold) 1970 GP SSJ 1970 GTO barn find..TLB…390 horse?….yeh, 390 1972 GTO 455 HO, 4 speed, (build) 1973 Grand Safari wagon, 700hp stoplight sleeper 525ci DCI & 609ci LM V head builds Last edited by J.C.you; 02-18-2007 at 11:18 PM. |
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#75
02-18-2007, 11:44 PM
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Lynn,
Leave it to the Super Stock guy to ask the hard questions. I have to keep some things under wraps. :-) Since dyno-ing the engine back in Oct '06 we thought long and hard about what really made this one sing. The intake port specifics and cam timing specifics are very important. Therefore, details we are not going to reveal just yet are cam specifics beyond what has been disclosed here or hardcore details about intake ports. Many years of building, tuning, testing and racing to arrive at them. We have provided pictures and dimensions to help others with their efforts without giving away the farm. I hope all can respect our position. HotCat 63, Valve covers are made from magnesium. We are working on supplying these with or without CNC work. More to follow. J.C.you, Don't forget to subtract the area of the stem diameter...and the area immedicately under the "last" seat cut is not perfectly round as the formula suggests. Thanks to all for your interest, Jim |
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#76
02-19-2007, 12:09 AM
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Quote:
__________________
1963 Cat SD Clone (old school) streeter 1964 GTO post coupe, tripower, 4speed (build) 1965 GTO 389 tripower, 4 speed, driver 1966 GTO dragcar 1966 GTO Ragtop 1969 Tempest ET clone street/strip 1969 GTO Judge RA lll, auto 1969 GTO limelight Conv. 4speed go and show (sold) 1970 GP SSJ 1970 GTO barn find..TLB…390 horse?….yeh, 390 1972 GTO 455 HO, 4 speed, (build) 1973 Grand Safari wagon, 700hp stoplight sleeper 525ci DCI & 609ci LM V head builds |
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#77
02-19-2007, 02:59 AM
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Jim,
I was just asking for the Pontiac guys here on the forum. It looked like you were publishing a Case Study for these guys. No problem, I respect proprietary info. My apologies. We have a limit of 160-165 ccs on the D-port heads, and 188 on the SD heads, so we cant come close to your port sizes. Lynn |
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#78
02-19-2007, 12:57 PM
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I'd like to take the time to say this is one of the best and most informative Topics I've read in a while!!!!
 And I'd also like to thank Mr. Jim Robertson for his time while we spoke, and for his true dedication to the Pontiac Motor Division to do what others thought could'nt be done! Thanks again and I'll be in contact with you soon, SLICK-1.
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#79
02-20-2007, 04:40 AM
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Jim- Do you think (or perhaps know) whether that 127% VE suffers much without 30" header extensions? Thanks.
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#80
02-20-2007, 09:10 AM
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His heads are flowing at .400" what my old d-ports flowed at .600".
__________________
Just a blind squirrel looking for a nut. |
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