|
Sponsored Links (Register now to hide all advertisements) |
|
|
Thread Tools | Display Modes |
12-18-2014, 03:08 PM | #1 |
Senior Member
Join Date: Jul 2010
Location: Shelbyville TN
Posts: 174
|
My flathead engine
I finally got my engine together and it is NOW running. My son is really the assembler----for who I am truly blessed.
One of my goals was to build the meanest sounding flathead around, and I think we have met the goal. If you want to view it, go to: http://youtu.be/oPp-DfDRYX8 |
12-18-2014, 03:15 PM | #2 |
Member
Join Date: Feb 2012
Posts: 76
|
Re: My flathead engine
Sounds bad ass. What cam are you running?
|
Sponsored Links (Register now to hide all advertisements) |
|
12-18-2014, 03:37 PM | #3 |
Senior Member
Join Date: May 2010
Location: Regina Canada
Posts: 1,335
|
Re: My flathead engine
sounds nice and lots of shiny!!!! Is the intake powder coated???
|
12-18-2014, 04:05 PM | #4 |
Senior Member
Join Date: May 2010
Location: Bowling Green, Ky.
Posts: 228
|
Re: My flathead engine
I agree. That the 1st Comp flathead cam I've heard. Looks good too.
|
12-18-2014, 04:06 PM | #5 |
Senior Member
Join Date: Dec 2013
Location: Minnesota, Florida Keys
Posts: 10,319
|
Re: My flathead engine
Engine looks and sounds great! Nice test stand too! I got carried away building mine; (full instrumentation, universal mounts, etc.). It's done except for the fuel tank. I'm looking for just the right one and can't find exactly what I want
|
12-18-2014, 04:38 PM | #6 |
Senior Member
Join Date: May 2010
Location: Chester Vt
Posts: 8,860
|
Re: My flathead engine
Sponsored Links (Register now to hide all advertisements)
|
12-18-2014, 05:30 PM | #7 |
Member
Join Date: Apr 2014
Location: Independence, Ca
Posts: 43
|
Re: My flathead engine
Sanborn... Beautiful!! Can ya give us some info? Cam, Bore/stroke, CR?
Ol' Ron... How does the run stand ruin the rings? And damn good idea on the spare tire!! |
12-18-2014, 09:15 PM | #8 |
Senior Member
Join Date: Jul 2010
Location: Shelbyville TN
Posts: 174
|
Re: My flathead engine
I appreciate everyone's comment.
Now for some specs: 1950 Merc block 3.3125" X 4.00" Comp Cams "Muther Thumper" cam Aluminum timing gear stock rods, shotpeened, rebushed, resized Intake runners enlarged, polished Lots of work on the "hump" in the intake runner Exhaust is cleaned up, edges rounded The guides are profiled to aid flow Perfect circle valve seals Isky springs Flathead Jack valves and retainers Vertex mag- external coil Compression ratio- 9.70 to 1-----That sounds high but you need that much compression to make up for the overlap of the cam. Wilson & Woods heads- 58 ccs after milling---These heads are great, machining is great, consistent ccs. Lot of area over the valve for flow. I can probably list another 30 mods. If you have further questions, just "ring" Ron, I appreciate your comment----but the idle speed is 850 RPM. We checked it twice. The engine is now off the run-in stand (another flathead is on- a stroker) Someone asked the question about excessive run-in use being bad for an engine. It is because the engine is never loaded and the cylinder walls tend to glaze and not let the rings seat. |
12-18-2014, 10:33 PM | #9 |
Senior Member
Join Date: May 2010
Location: Oakdale,Ca
Posts: 1,323
|
Re: My flathead engine
I've read mention of running the engine on a stand, and being bad for it...but is this because of older tech rings?...I've never had an issue breaking in cams on belly button engines on a stand (20-30 minutes run time)...and putting them in the vehicle.
To the Op...sorry, my connection is to slow to get the vid running...looks danged nice tho! |
12-18-2014, 10:54 PM | #10 |
Senior Member
Join Date: May 2010
Location: Kaufman, TX
Posts: 822
|
Re: My flathead engine
Very nice!!
|
12-18-2014, 11:22 PM | #11 |
Senior Member
Join Date: May 2010
Location: Kokomo, Indiana
Posts: 1,731
|
Re: My flathead engine
Wicked sound! Love it.
__________________
Henry |
12-19-2014, 09:16 AM | #12 |
Senior Member
Join Date: May 2010
Location: NJ
Posts: 6,181
|
Re: My flathead engine
Dang, that engine sounds awesome. Nice job. Love it!
|
12-19-2014, 11:24 AM | #13 |
Senior Member
Join Date: Jul 2010
Location: Shelbyville TN
Posts: 174
|
Re: My flathead engine
A couple of other questions that I did not answer:
Yes, the heads, intake and gear cover is powder coated. I am getting too old to polish on aluminum or chrome. I think I will powder coat(black) the air cleaners. The pistons and heads are ceramic coated. We have used this in the past on our race engines----Why not on this last street engine! I am sure most noticed we converted the block to 66% filtered flow. One comment----I am using Flathead Jack's stainless valves. I was super pleased, when used with his retainers, no shims were needed. Also, no back cutting was necessary---they were ready to go out of the box. |
01-17-2015, 01:28 AM | #14 |
Senior Member
Join Date: May 2010
Location: Michigan
Posts: 464
|
Re: My flathead engine
Have you ran the motor in a vehicle yet. If so how do you like the cam. Ive tried to get feedback on the thumper cams but never could get any for a flathead. Thanks
|
01-17-2015, 11:01 PM | #15 |
Senior Member
Join Date: May 2012
Location: Ashland City, TN
Posts: 130
|
Re: My flathead engine
That is one sweet sounding flat.Very nice!
|
|
|
Sponsored Links (Register now to hide all advertisements) |
|