Kenendcindyc Posted May 22, 2019 Share Posted May 22, 2019 Hi again boys, Let me start off by saying I believe in keeping these cars as original as possible for future generations to enjoy and all modifications I have made are 100% reversible and all original parts are kept with the car. That being said, I enjoy my car and drive it as much as I can, lots of time in the White Mountains of NH where sometimes a little more power is required to stay with the flow of traffic and not be a hazard. Now if I was the only one on the road I would love to just drop down to second gear and enjoy the ride at 20 mph 🙂. I decided to raise the compression above 5 to 1 in order to improve the efficiency and gain some power and fuel mileage. I could mill the head and gain maybe one point of compression to around 6 to 1 but the head is perfectly good and straight just the way it is and that metal can't be put back on later if desired, haha. SOOOO I decided to make my own , I thought you guys and gals might like some pictures because we all like pictures, haha I'll download some of the key ones because i have lots, I have put about 500 miles on it so far and its fantastic. I also had to change the advance curve in the distributor because with increased compression less advance is required. Enjoy, Ken Link to comment Share on other sites More sharing options...
Kenendcindyc Posted May 22, 2019 Author Share Posted May 22, 2019 Started with two giant pieces of 6061 aluminum 😀 Link to comment Share on other sites More sharing options...
Kenendcindyc Posted May 22, 2019 Author Share Posted May 22, 2019 Drilled some holes and some rough layout to keep me from machining the important parts. Sorry for the pink boys it’s really red trust me. 😬 Link to comment Share on other sites More sharing options...
Kenendcindyc Posted May 22, 2019 Author Share Posted May 22, 2019 Combustion chambers on one side and coolant passages on the other. Link to comment Share on other sites More sharing options...
Kenendcindyc Posted May 22, 2019 Author Share Posted May 22, 2019 Top plate and coolant passages complete Link to comment Share on other sites More sharing options...
Kenendcindyc Posted May 22, 2019 Author Share Posted May 22, 2019 Assembled with tapered pins for perfect alignment , oh and those triangular groves are highly experimental haha😬 Link to comment Share on other sites More sharing options...
Alan Cutler Posted May 22, 2019 Share Posted May 22, 2019 Fine machine work...I'm jealous. What CNC did you use to cut it? 1 Link to comment Share on other sites More sharing options...
Kenendcindyc Posted May 22, 2019 Author Share Posted May 22, 2019 Made some new studs while I was there , same length as original in case I need to put original head back on for some reason. Link to comment Share on other sites More sharing options...
Kenendcindyc Posted May 22, 2019 Author Share Posted May 22, 2019 Surf city 38, haha CNC ahhhhh the newest machine I have was built in 1947 I think. 1 Link to comment Share on other sites More sharing options...
Kenendcindyc Posted May 22, 2019 Author Share Posted May 22, 2019 (edited) All machining on the head was on this #12 Van Norman mill. Not even equipped with a DRO ☹️ Edited May 22, 2019 by Kenendcindyc spelling (see edit history) 2 Link to comment Share on other sites More sharing options...
Kenendcindyc Posted May 22, 2019 Author Share Posted May 22, 2019 2 Link to comment Share on other sites More sharing options...
Kenendcindyc Posted May 22, 2019 Author Share Posted May 22, 2019 (edited) Went from roughly 100 cc original combustion chambers to 55cc that calculates to roughly 7.7 to 1 ( I didn’t calculate the exact head gasket volume so that may not be 100% accurate but real close. 😬 For some reason i don't have a fully assembled picture I'll get one tomorrow . Edited May 22, 2019 by Kenendcindyc (see edit history) Link to comment Share on other sites More sharing options...
Kenendcindyc Posted May 22, 2019 Author Share Posted May 22, 2019 Tinindian, Thanks for the 👍. Ive only recently started posting here but I have been lurking here for awhile, Any man that has the experience and has put on the milage you have is like a God to me, haha THANKS Again. Link to comment Share on other sites More sharing options...
Kenendcindyc Posted May 22, 2019 Author Share Posted May 22, 2019 Ahhhh I did have a final assembly pic Link to comment Share on other sites More sharing options...
maok Posted May 22, 2019 Share Posted May 22, 2019 With the generator on that side of the engine, that looks to be a '28 or earlier Chrysler engine ? It could be parallax error, but your valves look to be on angle to the block face? Awesome work on the cylinder head. Just love it. 1 Link to comment Share on other sites More sharing options...
Kenendcindyc Posted May 22, 2019 Author Share Posted May 22, 2019 Nope it’s a 28 Dodge Brothers 208ci engine. It is similar though. And yes the valves are canted over slightly. 1 Link to comment Share on other sites More sharing options...
maok Posted May 22, 2019 Share Posted May 22, 2019 3 minutes ago, maok said: With the generator on that side of the engine, that looks to be a '28 or earlier Chrysler engine ? It could be parallax error, but your valves look to be on angle to the block face? Awesome work on the cylinder head. Just love it. Maybe I should read the thread title....lol Link to comment Share on other sites More sharing options...
maok Posted May 22, 2019 Share Posted May 22, 2019 Just now, Kenendcindyc said: Nope it’s a 28 Dodge Brothers 208ci engine. It is similar though. And yes the valves are canted over slightly. Yes, remarkably similar. Link to comment Share on other sites More sharing options...
Kenendcindyc Posted May 22, 2019 Author Share Posted May 22, 2019 (edited) I think one advantage to the Dodge Brothers engine is lower end. It’s got modern size 2.125” rod journals where I think the Chrysler engines of the era were only 1. Something inches. But I’m not exactly sure I maybe thinking of another brand. Edited May 22, 2019 by Kenendcindyc (see edit history) Link to comment Share on other sites More sharing options...
RichBad Posted May 22, 2019 Share Posted May 22, 2019 Beautiful work, well done! did you also make your own dissy body? 1 Link to comment Share on other sites More sharing options...
Kenendcindyc Posted May 22, 2019 Author Share Posted May 22, 2019 I have not made the distributor body, yet (it is the last of the white metal on my engine but so far no cracks). My distributor is a type 1-0836 and it is two pieces made up of a main body and a upper points plate. The points plate was starting to crack badly around the pin that the points pivot on. So I did make a new upper plate that uses a very common modern set of points. 1 1 Link to comment Share on other sites More sharing options...
Alan Cutler Posted May 22, 2019 Share Posted May 22, 2019 (edited) Talented.👋 Edited May 22, 2019 by Surf City '38 (see edit history) 1 Link to comment Share on other sites More sharing options...
JACK M Posted May 22, 2019 Share Posted May 22, 2019 One thing in life I wish I could do that I can't is machine work. Very nice.... 1 Link to comment Share on other sites More sharing options...
keiser31 Posted May 22, 2019 Share Posted May 22, 2019 Excellent! 1 Link to comment Share on other sites More sharing options...
JB-ed Posted June 13, 2019 Share Posted June 13, 2019 Nice work. Please let us know how it runs. In the photo of the water-jacket plate on your kitchen table, I can't see the inlet hole on the underside view, but it is there on the top view. Please tell me what I am missing. Link to comment Share on other sites More sharing options...
Spinneyhill Posted June 13, 2019 Share Posted June 13, 2019 Very impressive piece of work very well done. Did you make the vertical spark plug connectors? I need some of them for my Dodge 8. Link to comment Share on other sites More sharing options...
Kenendcindyc Posted June 13, 2019 Author Share Posted June 13, 2019 3 hours ago, JB-ed said: Nice work. Please let us know how it runs. In the photo of the water-jacket plate on your kitchen table, I can't see the inlet hole on the underside view, but it is there on the top view. Please tell me what I am missing. Jb-Ed ,if your asking about the last two pictures of the completed head that’s on my table then what your seeing is both the “top plate” and the lower head assembly together. I had to make it in two pieces in order to machine coolant passages, if it was a casting it would be one piece with coolant passages cast in. I have about a thousand miles on it so far and it’s running fantastic ,hills I used to pull at full throttle I can now pull at about 1/2 throttle. Fuel mileage went from about 14-15 to 20 mpg. 👍🏻 1 Link to comment Share on other sites More sharing options...
Kenendcindyc Posted June 14, 2019 Author Share Posted June 14, 2019 3 hours ago, Spinneyhill said: Very impressive piece of work very well done. Did you make the vertical spark plug connectors? I need some of them for my Dodge 8. Yes I did. The ones I had on the original style plugs treaded onto the plugs. The new head I used modern 14mm plugs so I made those “connectors”. What style do you need? Link to comment Share on other sites More sharing options...
maok Posted June 14, 2019 Share Posted June 14, 2019 23 minutes ago, Kenendcindyc said: Jb-Ed ,if your asking about the last two pictures of the completed head that’s on my table then what your seeing is both the “top plate” and the lower head assembly together. I had to make it in two pieces in order to machine coolant passages, if it was a casting it would be one piece with coolant passages cast in. I have about a thousand miles on it so far and it’s running fantastic ,hills I used to pull at full throttle I can now pull at about 1/2 throttle. Fuel mileage went from about 14-15 to 20 mpg. 👍🏻 Yes,its amazing what a boost in compression can do for torque. I only use 2nd &3rd gears now. My fuel economy has dramatically improved. Link to comment Share on other sites More sharing options...
Spinneyhill Posted June 14, 2019 Share Posted June 14, 2019 1 hour ago, Kenendcindyc said: What style do you need? They are a push-on zinc plated type with a circular spring clip to push onto the spark plug bulb at the top. I have the blanks and have to cut the slots and make the springs. Link to comment Share on other sites More sharing options...
Kenendcindyc Posted June 14, 2019 Author Share Posted June 14, 2019 43 minutes ago, Spinneyhill said: They are a push-on zinc plated type with a circular spring clip to push onto the spark plug bulb at the top. I have the blanks and have to cut the slots and make the springs. ahhhh ok, Those in the picture are just some quick ones I machined up, because after i got the head on I totally forgot my old ones wouldn't fit on the new plugs haha. In fact my first 10 mile test drive I had the plug wires wire tied to the side of the plugs and my fingers crossed they wouldn't melt before i got back. 😉 Link to comment Share on other sites More sharing options...
keithb7 Posted June 14, 2019 Share Posted June 14, 2019 Spectacular work! By chance did you take a compression test before and after? If so what were the results? 1 Link to comment Share on other sites More sharing options...
Mattml430 Posted June 14, 2019 Share Posted June 14, 2019 That is just beautiful work you should be very proud of that. How many hours work went into doing it all, or did you not want to know. Haha. Its just amazing. Link to comment Share on other sites More sharing options...
Kenendcindyc Posted June 14, 2019 Author Share Posted June 14, 2019 1 hour ago, Mattml430 said: That is just beautiful work you should be very proud of that. How many hours work went into doing it all, or did you not want to know. Haha. Its just amazing. I have about 80-100 hrs into the project 😳 as I have very primitive machines. Some of that time includes making some tooling I needed to perform the machining. Kieth ,Surprisingly I have not performed a “ after” compression test yet as I keep forgetting to bring home my compression tester from my day job haha. But thanks for the reminder maybe this weekend 😀. I had 65psi with the original head. 1 Link to comment Share on other sites More sharing options...
Kenendcindyc Posted June 14, 2019 Author Share Posted June 14, 2019 21 hours ago, keithb7 said: Spectacular work! By chance did you take a compression test before and after? If so what were the results? I checked compression tonight after work, original head was 65 psi new head is 125 psi Link to comment Share on other sites More sharing options...
maok Posted June 14, 2019 Share Posted June 14, 2019 WoW 125psi! I only have 85psi, up from 70, may need to take off another. 0.030" from the head. Link to comment Share on other sites More sharing options...
Kenendcindyc Posted June 15, 2019 Author Share Posted June 15, 2019 (edited) 48 minutes ago, maok said: WoW 125psi! I only have 85psi, up from 70, may need to take off another. 0.030" from the head. Ya when I decided to build a head I went for the highest compression I could without shrouding the valves too much. I figured I could allways machine the transfer section more if I needed to lower it some. Compression stayed reasonable because the piston stops about .070” below the deck on this motor and head gasket is .065” thick. If you compare the old combustion chamber with the new you will see it’s probably a little more than can be gained with a .030” shave. 😀 Note these pictures are some what deceiving because of the difference in distance that I took the pictures. The originals CC at 100 and the new head at 55cc. Combustion chambers are .750"deep on original and .370" on the new head and it has a shorter transfer section. Edited June 15, 2019 by Kenendcindyc (see edit history) 3 Link to comment Share on other sites More sharing options...
keithb7 Posted June 15, 2019 Share Posted June 15, 2019 (edited) Wow. Those are some serious compression gains. Any concerns about the parts down the line? Piston rings? Piston, pins, con-rods, bearings and crank for example? Will these parts take these higher intensity blasts reliably? Just curious on your thoughts here. Old iron is generally over engineered I suspect. Edited June 15, 2019 by keithb7 (see edit history) Link to comment Share on other sites More sharing options...
Kenendcindyc Posted June 15, 2019 Author Share Posted June 15, 2019 (edited) 2 hours ago, keithb7 said: Wow. Those are some serious compression gains. Any concerns about the parts down the line? Piston rings? Piston, pins, con-rods, bearings and crank for example? Will these parts take these higher intensity blasts reliably? Just curious on your thoughts here. Old iron is generally over engineered I suspect. Well time will tell, but I think it will be fine. I'm using the same pistons as a 1930 chrysler 268 and that's a 100 hp motor, the Dodge Brothers six is a seven main bearing engine with 2.375" mains and 2.125" rod bearings and a forged steel crankshaft with full pressure lubrication. Plus I figure during normal cruse its only producing the HP required to move you down the road same as before except now your throttle is open less and your burning less fuel and making less heat. Only when your calling on it to do something it couldn't do before is it working harder and under more strain but that will be intermittent. For comparison these are the connecting rods I’m running compared to some rods from a modern 230 hp v8 and what the lower end of the Dodge looks like. So my guess is its over built enough to handle more than original HP. Crankshaft picture is Dodge Vs Model T ford (I raised the compression on it also and its doing fine) haha Edited June 15, 2019 by Kenendcindyc (see edit history) 1 Link to comment Share on other sites More sharing options...
JB-ed Posted June 16, 2019 Share Posted June 16, 2019 (edited) It's also possible that if you switched to the Stromberg UX-2 carburetor, you may get even better performance -- if you use Glenn Smith's reproduction. Your distributor is not the stock model provided with the original engine. What is it from and how is the advance curve compared with the original. I presume you allow far less advance in timing, but how much? Regarding my previous question, I understand your need to produce this in two parts, it's just that I could not see all the coolant passages (and still can't but that's my problem). Edited June 16, 2019 by JB-ed (see edit history) Link to comment Share on other sites More sharing options...
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