I've slowly but surely been making a little progress on my hot rod, ran the engine about a month ago, ran strong, very happy. http://www.youtube.com/watch?v=_-IevaW2lLY hope to drive it this coming summer.
Sounded great. As they do the pull, I like to imagine the engine is already in the car...scootin' down the road. WWWWWHHHHHAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA!!!!!!!!!!!!!!!!!!!!!!!!! Have fun with the rest of the build!
<meta http-equiv="Content-Type" content="text/html; ch****t=utf-8"><meta name="ProgId" content="Word.Do***ent"><meta name="Generator" content="Microsoft Word 11"><meta name="Originator" content="Microsoft Word 11"><link rel="File-List" href="file:///C:%5CDO***E%7E1%5CAdmin%5CLOCALS%7E1%5CTemp%5Cmsohtml1%5C01%5Cclip_filelist.xml"><!--[if gte mso 9]><xml> <w:WordDo***ent> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <wunctuationKerning/> <w:ValidateAgainstSchemas/> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:Compatibility> <w:BreakWrappedTables/> <w:SnapToGridInCell/> <w:WrapTextWithPunct/> <w:UseAsianBreakRules/> <wontGrowAutofit/> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> </w:WordDo***ent> </xml><![endif]--><!--[if gte mso 9]><xml> <w:LatentStyles DefLockedState="false" LatentStyleCount="156"> </w:LatentStyles> </xml><![endif]--><style> <!-- /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-parent:""; margin:0in; margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:12.0pt; font-family:"Times New Roman"; mso-fareast-font-family:"Times New Roman";} @page Section1 {size:8.5in 11.0in; margin:1.0in 1.25in 1.0in 1.25in; mso-header-margin:.5in; mso-footer-margin:.5in; mso-paper-source:0;} div.Section1 {page:Section1;} --> </style><!--[if gte mso 10]> <style> /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} </style> <![endif]--> 8BA Ford flathead block Ported and polished, no relief 4" stroke 3.3125"bore **** crank, rods Fluidampr balancer (wide belt) M19 oil pump (oil pressure was a little low in my opinion 47lbs@5000rpm, 20w-50) Ross pistons, 0.0055" wall clearance rings gapped .018 to .020 Schneider 270F cam .395" lift Johnson hollow lifters (Reds headers) 0.012" intake 0.014" exhaust clearance Manley proflow valves Edelbrock heads(newer casting with edelbrock machining over valves, I re-worked the spark plug area slightly) NGK sparkplugs Edelbrock su359 intake 3 Stromberg 48's on progrssive linkage center carb 45 mains 65 accel jet outboard carbs 43 mains 67 accel jet MSD dist and wires, 4 degrees initial 26 total Final air/fuel ratio was a safe 12 to 1 Output 190 hp, 240ft/lbs
peak power was made at 4800 to 4900, fell off drastically after 5200 rpm, not sure if a cam change would help or if its past it's breathing capabilities with out relieving the block. I just wanted a stout daily driver out of it, so it is currently beyond my expectations.
Sounds great to me? I am intrested in your cam specs and the dyno numbers, did you degree this cam and do you know the openings and closings? I am gearing up to Mfg new billet flat head V-8 cams. My son Tony and I have a merc motor we will be building up for his 32 coupe and we will be testing it on my dyno with different test cams. So I was looking for any dyno info and cams along with the engine build info. I sure would appreciate any thing you can tell me. Bill Stipe www.stipemachine.com
Im bolting a merc cranked flathead together today strangely enough..very similar specs to yours..Milder cam and only two carb intake, but should be a great street motor.I also didnt relieve the block, just a 'blend' towards the piston holes a little deeper than stock. couple of questions on the Ross pistons..my Machinist set the bore clearance at .0038-.0040 and I set the rings at .012 end gaps. Youve gone for looser tolerances in both cases, and I wondered what your reasoning was, I have just gone by what I was recommended, and wondered if you had some experience with the ross pistons that steered you towards larger clearances?
Im bolting a merc cranked flathead together today strangely enough..very similar specs to yours..Milder cam and only two carb intake, but should be a great street motor.I also didnt relieve the block, just a 'blend' towards the piston holes a little deeper than stock. couple of questions on the Ross pistons..my Machinist set the bore clearance at .0038-.0040 and I set the rings at .012 end gaps. Youve gone for looser tolerances in both cases, and I wondered what your reasoning was, I have just gone by what I was recommended, and wondered if you had some experience with the ross pistons that steered you towards larger clearances?
I'm always torn! The 2 prettiest engines out there are undoubtibly are the Hemi and the Flathead. This thing is cool and sounds good too! Thanks for the thread!
Cam is a Schneider 270 F .395 lift, yes i degreed the cam but it was only out 1/2 a degree so i installed it straight up. i'll see if i can find the cam card if it has more info. but I believe the specs are on Schneider's website. nothing special about the cam (off the shelf part number)
I had previously dealt we another flathead (***embled and machined by someone else) had Ross pistons and it scuffed the pistons after 200 miles. I decided to run looser clearance based on that, a few books i read, and my machinists dislike of Ross pistons. My machinist preferred looser clearance because he doesn't like the aluminum Ross uses and has seen more than one set scuffed with tighter clearance. This is not to say .004" will not be enough. like i said i didn't ***emble the flathead with scuffed pistons and don't know what the clearances were. I'm surprised you could get .012" end gap on you rings. Are you using grant rings? out of the box the tightest i had was .017" I then file fit them myself to .020" just to even them all up. I also thought a little looser on everything might work well because i was kicking around the idea of putting a blower on it.
Lowsquire, one more thing, i also made a deck stress plate that my machine shop could use while boring and honing. don't know if it helped but i guess it didn't hurt.
Does anyone have a nice way to run a full flow oil filter on the newer 1949-53 8ba or merc flat heads? Bill
I did a full flow filter on my 8BA, you have to drill and tap the block. There are diagrams in several books on where to drill.
I drilled and tapped the back of my block for 95% oil filtering, did this while the block was dis***embled. Used an O'Brien Truckers "Hildebrandt" oil filter housing, hooked up black braided -8 out and back in the block. The finned housing can bee seen on a bracket attached to the bellhousing in the video
Thanks for the reply deucerails, yes I used Grant rings as supplied by Ross, the tightest one was about.007 if I recall. thought .012 was about right for a bore just over three inch ( they recommend .003 to .004 per inch of bore ) The scuffing anectdote has me a little worried! ah well, find out soon enough..just put it in the ch***is..fire up next week.
The Jalopy Journal
