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38flattie
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« Reply #840 on: January 22, 2012, 10:16:36 PM » |
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Not as long as the Buicks, but still pretty long rods!
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desotoman
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« Reply #841 on: January 23, 2012, 11:39:18 PM » |
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Hey Tom . . . how the hell are yah! Are you by chance going to make it to Bonneville this summer - would be great to see you again . . . has been about 20 years. Let me know and we'll be sure to hook up. We are planning to go to El Mirage in the spring - will keep you posted on that as well. Who the hell would think I'd end up in Ohio - just so I could get back to racing on the West Coast. But Hell . . . we now have the 'Wilmington Mile' -- out my way . . . gives us some new possibilities!
As far as the ports go -- given that we're blown, the supercharger can overcome a lot of 'flathead sins' . . . the more port volume the better for what we're doing.
Dale
Hi Dale, Good to see you posting. It has been awhile hasn't it.  I am doing good, thanks. Glad to see you helping Buddy on the Flatcad project. Yes I will be going to Bonneville this year, and will defiantly look you guys up, but if you are coming out to El Mirage, I will see you there first. Keep me posted. If you guys get the right cam in the Flatcad I think you will make some great Horsepower, and set many records. I wish you guys the best. Tom G. |
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"Got'Cha" was first run in 1974. Bill Temple entered both 2 clubs in 1976 with records in AA/BGR. At El Mirage 201.79 and Bonneville at 220.
In 1977 Greg Temple started driving "Got'Cha" and entered the El Mirage Dirty 2 club in 1979 @ 201.97. Greg went on to set two records at Bonneville, one in 1981 at 241.848, then in 1991 he set another record at 262.230
Bill and Greg were the first father and son to enter the El Mirage Dirty 2 club. They broke the D/BFR at Bonneville in 1981 @ 241 with top speed of 249. This record still stands today. In 1991 they set the A/BFR @ 262 which was later broke by Duane McKinney.
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Milwaukee Midget
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If in doubt, it probably IS a mistake.
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« Reply #842 on: January 23, 2012, 11:59:21 PM » |
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Not as long as the Buicks, but still pretty long rods!
What kind of rod to stroke ratio are you at? |
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"Information - we want - information"
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38flattie
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« Reply #843 on: January 24, 2012, 09:03:06 AM » |
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Not as long as the Buicks, but still pretty long rods!
What kind of rod to stroke ratio are you at? Chris, we're at 1.89! Rod is 8.75", and stroke is 4.625" |
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desotoman
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« Reply #844 on: January 24, 2012, 01:45:19 PM » |
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Buddy,
What is your deck height?
Tom G.
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"Got'Cha" was first run in 1974. Bill Temple entered both 2 clubs in 1976 with records in AA/BGR. At El Mirage 201.79 and Bonneville at 220.
In 1977 Greg Temple started driving "Got'Cha" and entered the El Mirage Dirty 2 club in 1979 @ 201.97. Greg went on to set two records at Bonneville, one in 1981 at 241.848, then in 1991 he set another record at 262.230
Bill and Greg were the first father and son to enter the El Mirage Dirty 2 club. They broke the D/BFR at Bonneville in 1981 @ 241 with top speed of 249. This record still stands today. In 1991 they set the A/BFR @ 262 which was later broke by Duane McKinney.
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38flattie
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« Reply #845 on: January 24, 2012, 04:15:45 PM » |
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Tom, Lately, I've seen deck height mention two different ways . What I call deck height is crank centerline to the block deck. That is 13.15"  The other reference to deck height I've seen is the space between the piston dome and the combustion chamber, at top dead center, without a head gasket. That distance is approximately -.024"- -.020", with squish being .036"-.040", with a .060 copper head gasket. I say approximately, because we just had the heads and pistons coated, and installed the pistons. Dale has not yet had a chance to measure everything, after the coating and installation. |
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gearheadeh
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Age: 51
Location: Calgary Alberta Canada
Posts: 252
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« Reply #846 on: January 24, 2012, 06:46:20 PM » |
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Tom, Lately, I've seen deck height mention two different ways . What I call deck height is crank centerline to the block deck. That is 13.15" The other reference to deck height I've seen is the space between the piston dome and the combustion chamber, at top dead center, without a head gasket. is this called "compression Height"?That distance is approximately -.024"- -.020", with squish being .036"-.040", with a .060 copper head gasket. I say approximately, because we just had the heads and pistons coated, and installed the pistons. Dale has not yet had a chance to measure everything, after the coating and installation. |
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40 is the old age of Youth, 50 is the young age of the Senior years.
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38flattie
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« Reply #847 on: January 24, 2012, 07:19:42 PM » |
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Well, I always thought compression height was from the centerline of the crank, to the top of a piston, if its a flat top, or the point on a piston where it starts to curve, if it's a dome piston. However, with the recent articles I've read, I no longer understand what is being called what!  I've also seen CH referred to as the distance from wrist pin centerline to piston top. I think Dale calls CH the distance from wrist pin centerline to the deck. I guess it's whatever you want it to be! |
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« Last Edit: January 24, 2012, 07:38:31 PM by 38flattie »
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Stan Back
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« Reply #848 on: January 24, 2012, 07:39:00 PM » |
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Buddy --
Read the thread about roll bars mounted in unibodies if you really wanna get lost. Least I did. Almost ended up in Riverside.
Stan
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Member of the San Berdoo Roadsters – California's most-exclusive roadster club.
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Peter Jack
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« Reply #849 on: January 24, 2012, 08:17:13 PM » |
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Ya gotta look up every once in a while Stan!!!  Pete |
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My avatar shows Tok, a 100# Alaskan Malamute.
He's the one who runs everything around here.
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desotoman
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« Reply #850 on: January 24, 2012, 09:31:11 PM » |
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Well, I always thought compression height was from the centerline of the crank, to the top of a piston, if its a flat top, or the point on a piston where it starts to curve, if it's a dome piston. However, with the recent articles I've read, I no longer understand what is being called what! Buddy, You gave me what I asked for, Thanks. This chart might help. Tom |
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"Got'Cha" was first run in 1974. Bill Temple entered both 2 clubs in 1976 with records in AA/BGR. At El Mirage 201.79 and Bonneville at 220.
In 1977 Greg Temple started driving "Got'Cha" and entered the El Mirage Dirty 2 club in 1979 @ 201.97. Greg went on to set two records at Bonneville, one in 1981 at 241.848, then in 1991 he set another record at 262.230
Bill and Greg were the first father and son to enter the El Mirage Dirty 2 club. They broke the D/BFR at Bonneville in 1981 @ 241 with top speed of 249. This record still stands today. In 1991 they set the A/BFR @ 262 which was later broke by Duane McKinney.
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maguromic
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« Reply #851 on: January 24, 2012, 10:01:50 PM » |
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Buddy, Your engine looks great, great to see the progress! Tony
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“If you haven’t seen the future, you are not going fast enough”
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38flattie
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« Reply #852 on: February 03, 2012, 12:01:01 PM » |
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Well, I had the wind taken out of my sails today!
Chris had made a prototype head chamber, so that Joe Abbin could do the initial flow test.
Garry Odbert has been porting and testing his Caddy flathead, and getting 185-187 CFM at .500 lift, with a stock head, with the valve pockets cut to allow .500 lift. Garry offered to flow our head, for comparison.
Here are the numbers-intake side at .100 lift 64cfms lift, @.200- 123cfm, .300-150cfm, 400-163cfm, .450-166cfm, and .500-166cfm.
Garry reported a good, smooth airflow, which was about the only positive news!
In addition to disappointing flow, Garry did a dye test, and it looks like fuel is all in one 2'' spot, centered over the exhaust valve, unlike some heads, we placed the spark plug over the intake valve! Garry is going to send a pic this evening.
So, I'm pretty confident that no matter what the engine does on the dyno, we've left some HP out of the engine. Garry's port are not identical to ours, but that is only part of the equation.
We'll get it on the dyno, but I'll still be feeling disappointed in not getting more testing done prior to getting parts made. Ideas are good, but I'm kicking myself for not doing more testing! I'm definitely going to look at other piston/head options, for a major redo this fall.
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Jack Gifford
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Age: 72
Location: Phelps, NY
Posts: 329
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« Reply #853 on: February 04, 2012, 12:34:45 AM » |
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Thanks for sharing those flow numbers. I had thought that the only meaningful testing would involve the block/head combination- how did you simulate the block/valve while flowing the chamber?
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M/T Pontiac hemi guru
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38flattie
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« Reply #854 on: February 04, 2012, 07:13:41 AM » |
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Jack, Garry is building his own Cadillac flathead, and has it heavily ported-185-187 CFM out of a flathead is fantastic flow!
I couldn't get my block to him, so he used his. I realize this isn't the perfect scenario, but it's better than nothing.
I'm still sold on the roller lifter cam, and am working on getting the setup finished.
Josh is converting a lifter block for the rollers. He is adding an aluminum block, .300 thick, 1.4" wide, and the length of the lifter block, bolted to the bottom of the lifter block..He's use 82 degree counter sunk Allen heads to hold the plates on, then will drill and hone the blocks for a .0015 to max of .002 lifter clearance on the diameter.
After they are honed, he'll 't' slot a cut into the bottom of the aluminum lifter plate, and into the lifter block. The 'T' slot should allow the lifter to go up into the lifter block until it is flush with the newly mounted aluminum plate.
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« Last Edit: February 04, 2012, 07:27:18 AM by 38flattie »
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