Updated: Help needed with cam timing-Ford 312 RR |
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KENO ![]() Grand Poobah ![]() Joined: June-06-2004 Location: United States Status: Offline Points: 11247 |
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This is it.................Down by 4 and 2 seconds to goand 4th and goal at the 2 yard line.
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MourningWood ![]() Gold Member ![]() Joined: June-13-2014 Location: NorCal Status: Offline Points: 920 |
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Touchdown!!!!!
In the water, still afloat. A couple leaks which required a quick shaft log reseal. Wasn’t prepared to be judged (in non judged class) but judges asked to. Turns out they loved the engine! Go figure! |
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1964 Dunphy X-55 "One 'N Dun"
'I measured twice, cut three times, and it's still too short!" |
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MrMcD ![]() Grand Poobah ![]() ![]() Joined: January-28-2014 Location: Folsom, CA Status: Offline Points: 3778 |
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Very Nice, glad they liked it. Maybe share a picture or two when things slow down.
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67 ski nat ![]() Platinum Member ![]() Joined: July-19-2018 Location: Santa rosa Status: Offline Points: 1199 |
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Won and done. Congrats Brian
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MrMcD ![]() Grand Poobah ![]() ![]() Joined: January-28-2014 Location: Folsom, CA Status: Offline Points: 3778 |
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OK, attempt to show pictures of this fine boat in the Tahoe Show.
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MrMcD ![]() Grand Poobah ![]() ![]() Joined: January-28-2014 Location: Folsom, CA Status: Offline Points: 3778 |
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Engine picture loaded, working on a picture of the boat. Two tries now and it looks like it loaded but rejects on the final step. It is a pretty boat and looks brand new. I will try again.
Edit: Keept throwing me an error, Error Inserting in current location? Finally on 4th try, after having to Re name the photo on each attempt because the system will not allow you to try twice with the same name. No idea why it finally worked but glad it did. This boat should be enjoyed by many. Too bad we did not have more photos to add. Brian sent these 2 photos hoping I could get them to show for you guys. ( should have sent them to Ken our resident expert )
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MrMcD ![]() Grand Poobah ![]() ![]() Joined: January-28-2014 Location: Folsom, CA Status: Offline Points: 3778 |
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MrMcD ![]() Grand Poobah ![]() ![]() Joined: January-28-2014 Location: Folsom, CA Status: Offline Points: 3778 |
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Where do the Carburetors sit on that engine? That is quiet the manifold set up.
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fanofccfan ![]() Platinum Member ![]() ![]() Joined: December-13-2009 Location: North Bend NE Status: Offline Points: 1797 |
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Wow! Very nice. I hope Ken can get them turned 90 degrees. My head cant crank and process!
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2004 196 LE Ski 1969 Marauder 19 1978 Ski
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KENO ![]() Grand Poobah ![]() Joined: June-06-2004 Location: United States Status: Offline Points: 11247 |
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KENO ![]() Grand Poobah ![]() Joined: June-06-2004 Location: United States Status: Offline Points: 11247 |
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MrMcD ![]() Grand Poobah ![]() ![]() Joined: January-28-2014 Location: Folsom, CA Status: Offline Points: 3778 |
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Thanks Ken, I have never worked on that type intake set up. The last 312 I worked on had a Halley 4bbl and set up was normal.
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KENO ![]() Grand Poobah ![]() Joined: June-06-2004 Location: United States Status: Offline Points: 11247 |
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If you have a bucket list, make sure that screwing around with Carter YH's isn't on that list. I think Mourning Wood would agree
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MrMcD ![]() Grand Poobah ![]() ![]() Joined: January-28-2014 Location: Folsom, CA Status: Offline Points: 3778 |
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Ha, that is pretty funny. They look very cool, no idea how they perform but the look is priceless. I was the Rep for Carter from 1991 to 2001, I never ran across that 312 set up. We had all the rebuild kits so I bet it was in the line and just never got any attention back then, everything being sold was AFB's. That was the time frame when every new car was switching to Fuel Injection and Carter was sold off due to falling sales.
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MrMcD ![]() Grand Poobah ![]() ![]() Joined: January-28-2014 Location: Folsom, CA Status: Offline Points: 3778 |
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KENO ![]() Grand Poobah ![]() Joined: June-06-2004 Location: United States Status: Offline Points: 11247 |
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MrMcD ![]() Grand Poobah ![]() ![]() Joined: January-28-2014 Location: Folsom, CA Status: Offline Points: 3778 |
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Thanks Ken, I knew you could do it. 1st Place in a prestigious show is impressive.
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MourningWood ![]() Gold Member ![]() Joined: June-13-2014 Location: NorCal Status: Offline Points: 920 |
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Yes, he wood (SIC). I might ad that if one does choose to work on Carter YH's that they don't drink or have a firearm within reach!!
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1964 Dunphy X-55 "One 'N Dun"
'I measured twice, cut three times, and it's still too short!" |
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MourningWood ![]() Gold Member ![]() Joined: June-13-2014 Location: NorCal Status: Offline Points: 920 |
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Well, time to write the final chapter of this brief saga. The engine gave me fits going back together. Funny that it went together easily 10 years or so ago. Nothings changed except the number of candles on my cake.
Anyway, some others may find this info useful (or amusing). There is very, very little good information about the reverse rotation Ford Y-block. Lot's of friendly advice but fewer with hands-on 'sperience'. The cam (unique to the RR engine) is driven in the 'normal' direction by a direct gear-to-gear setup. This allows Ford to use the same crankshaft, rods, and most other engine internals. Even the distributor. Oil wicking is done through the rear main seal or crankshaft wick direction. (have seen both). As for the cam itself, the reverse rotation results in a uniquely different firing order. I think that the other cam specs are very close, if not identical, to the standard rotation. Power output is the same... Using a degree wheel (super fun!) and after multiple readings I came up with the following "cam card": Expressed in more conventional terms (at .050" lift"): INT open 5 ATDC, closes 37 ABDC. EX opens 40 BBDC, closes 7 BTDC. ( these were produced using a very accurate dial indicator w/ magnetic base) In the end, the boat runs flawlessly, even the carbs behaved well at Tahoe elevation. (a preemptive jet change and throttle blade opening adjustment). Didn't even dump fuel out the aft carb all over the electrics. (anyone with one of these engines will understand that one). And, that's it for 'One 'N Dun" show experience. Walk off with a trophy. Now my wife doesn't have to fear for her life should she spill a few drops of her favorite Pinot.... Time to pull some (younger) skiers, create some new memories with it. Thanks all for the help on this, hope someone else can benefit from the info here. |
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1964 Dunphy X-55 "One 'N Dun"
'I measured twice, cut three times, and it's still too short!" |
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uk1979 ![]() Platinum Member ![]() Joined: June-13-2007 Location: United Kingdom Status: Offline Points: 1426 |
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Thanks for taking the time to degree a RR Y Block cam and congratulations on the win.
![]() Happy boating now Roger
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Lets have a go
56 Starflite 77 SN 78 SN 80 BFN |
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