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#41
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^X2^ !
Frank
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Poncho Huggen, Gear Snatchen, Posi Piro. |
#42
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Quote:
LMAO - oh yeh - it was wild ass guess b/c I had no clue. |
#43
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Quote:
If you look at some of the pictures of the engine and the car you can clearly see the DOHC camshaft system used the "front" drive system on that engine, not the "rear" drive system of some other engines. Even those rear drive set-ups had to have a way to drive the oil pump. Tom V.
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"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
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#44
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Quote:
While the engine pictured does have 2 cams it is still a SOHC engine. Just like the FORD SOHC Hemi / FE engine was. Stan
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Stan Weiss/World Wide Enterprises Offering Performance Software Since 1987 http://www.magneticlynx.com/carfor/carfor.htm David Vizard & Stan Weiss' IOP / Flow / Induction Optimization - Cam Selection Software http://www.magneticlynx.com/DV Download FREE 14 Trial IOP / Flow Software http://www.magneticlynx.com/DV/Flow_..._Day_Trial.php Pontiac Pump Gas List http://www.magneticlynx.com/carfor/pont_gas.htm Using PMD Block and Heads List http://www.magneticlynx.com/carfor/pont_pmd.htm |
#45
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Agree, Malcolms was a single overhead camshaft deal.
But it had a camshaft and a distributor, which was my point. Also of ALL of the Concept Engines there was only one DOHC engine, period. All the rerst were SOHC engines. Some of the other Concept engines did not have a visible way to fire an ignition system or drive a oil pump. Quote:
Tom V.
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"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. Last edited by Tom Vaught; 05-01-2021 at 02:54 PM. |
#46
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Tom,
Since I never had to work on my 4.6l SOHC engine. How did FORD handle the oil pump? I know how they handled no distributor, as I had to change a number of coils that went bad. Stan
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Stan Weiss/World Wide Enterprises Offering Performance Software Since 1987 http://www.magneticlynx.com/carfor/carfor.htm David Vizard & Stan Weiss' IOP / Flow / Induction Optimization - Cam Selection Software http://www.magneticlynx.com/DV Download FREE 14 Trial IOP / Flow Software http://www.magneticlynx.com/DV/Flow_..._Day_Trial.php Pontiac Pump Gas List http://www.magneticlynx.com/carfor/pont_gas.htm Using PMD Block and Heads List http://www.magneticlynx.com/carfor/pont_pmd.htm |
#47
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The oil pump was changed from a "conventional" Oil Pump to a crankshaft to the pump in the pictures below.
G-Rotor type pump I believe is the design name of the pump. Ford had issues with the ignition coil people SEVERAL times, unfortunately. Kind of like my Pontiac HEI Distributor Modules that failed on me 5 times in my 1978 Trans Am. Some Pontiac blocks did have the provision for the cam driven rear location in the block (G-Rotor type pump). Tom V.
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"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. Last edited by Tom Vaught; 05-01-2021 at 05:31 PM. |
#48
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Quote:
I guess I should have worded it differently, no Useable camshaft in the factory location that used lifters and pushrods.
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John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
#49
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Screwed it up again, John. The part is very use-able, just used for a different task in this case. We have camshafts that drive high pressure fuel pumps for our fuel injection engines too. You are a smart guy, pay attention, LOL.
Tom V.
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"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
#50
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Nope, read it again?
No lifters on that shaft. No pushrods to those missing lifters either. I knew the shaft was needed to run the oil pump and distributor, just has no lobes for any valves/pushrods. I would say most here knew it also.
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John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
#51
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John, Now you are trying to bail yourself out of a hole you dug. That's funny.
Next you will be saying that "you did not need the camshaft on Malcolm's engine" even though Malcolm's engine had Tri-Power Carburetors and a Fuel Pump was required to feed those carbs. Weak John. THINK. You are supposed to be a Pontiac Engine expert. Tom V.
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"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
#52
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Tom,
Quit stating sh_t! It’s a good thread don’t have another thread shut down. GTO George |
#53
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No sense have any conversation about a 1 only engine or Ford blocks in the thread.JMHO,Tom
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#54
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Agree, A One of a kind Dual Overhead camshaft engine that probably was never fired in its history, Just a engineering concept, conversation was misplaced.
If John wants to start a thread about a one of a kind Dual Overhead Camshaft Pontiac Engine, go for it. I saw the Arnie Block with the splayed caps back in the 1994/1995 time period. Were you aware of the splayed cap blocks that far back Tom S? You have been around the engines and talked to Fritz V apparently often. Did Mickey ever have one? Tom V.
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"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
#55
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McKellar and DeLorean must have had a great relationship together in PMD engine engineering.
McKellar had the cam lobe profiles sorted out while DeLorean had the sustained RPM cam followers sorted out. That SOHC V8 development must have had huge internal backing. |
#56
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paper work with this block from engineering was august 1967.Bob Lussier was the group leader.Never seen a splayed block in the early 60s.M/T was into ford in 64.Tom
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#57
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The timeline for the block matches similar time lines for Research Projects from other companies.
Tom V.
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"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
#58
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Pics of the Pontiac 389 DOHC and 421 SOHC engines and the rear belt driven 428CI 3-valve head.
Last edited by PontiacJim1959; 05-02-2021 at 04:48 PM. |
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#59
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More photos of the SOHC engine. Head was designed for the 428CI engine
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#60
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Jim,take a close look at that middle pic of the 3 valve engine.The intake was on there for a mag pic.No way the ports line up with the intake valves.That had been pointed out before.Tom
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