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1940 Plymouth Coupe finally... RUNNING!!

Posted By: CrAzYMoPaRGuY

1940 Plymouth Coupe finally... RUNNING!! - 05/24/23 05:07 AM

Geez!!!!!!!! That took a while! LOL!!!!!!!!!!
It had Accel Gen VII Long gone, now Holley HP
This is the first time running, it's a break in tune (ceramic coated headers) where the headers survived. Proper tune going in the car soon. The intake has to come off and get fixed, long story, but my car is finalllly running!!!! Geez!!!!
Posted By: Sniper

Re: 1940 Plymouth Coupe finally... RUNNING!! - 05/24/23 07:51 PM

That's the meanest flathead I ever heard, grin
Posted By: poorboy

Re: 1940 Plymouth Coupe finally... RUNNING!! - 05/24/23 11:23 PM

Another step closer.

Why does the intake have to come off? What is going on? Us nosey old men need answers! LOL!
Posted By: moparx

Re: 1940 Plymouth Coupe finally... RUNNING!! - 05/24/23 11:40 PM

yeah ! nosy ! that's us !!! laugh2
that flathead sounds pretty good for a split manifold and duals................ biggrin
beer
Posted By: CrAzYMoPaRGuY

Re: 1940 Plymouth Coupe finally... RUNNING!! - 05/25/23 12:13 AM

Originally Posted by poorboy
Another step closer.

Why does the intake have to come off? What is going on? Us nosey old men need answers! LOL!



Dealing with "big names" isn't always fun!!!!
Barton built the engine, had a few issues I fixed, we had the pan off and valve covers off and determined..... the engine had most likely NEVER ran. Hence the prep and cam break in. The "dyno sheet" we guessed fake years ago when I got it, the BSFC values somehow left off was a good indication lol.

Rance Baxter built the EFI, the throttle blades are positioned terribly, the linkage doesn't work correctly (one bank opens at a different rate than the other) the vacuum manifolds are done incorrectly (one is ported vacuum) and the injectors stillll aren't sized properly, but at least borderline. I'll fix it all when I take it off. The cylinders are imbalanced and the throttle blades stick at idle once warm.

And??? I have a John Cope tranny and PTC convertor. LOL I have my fingers crossed it works well!!!!!
Posted By: CrAzYMoPaRGuY

Re: 1940 Plymouth Coupe finally... RUNNING!! - 05/25/23 12:14 AM

Originally Posted by Sniper
That's the meanest flathead I ever heard, grin


Heads have a few lumps, the car's AND mine....
Posted By: CrAzYMoPaRGuY

Re: 1940 Plymouth Coupe finally... RUNNING!! - 05/25/23 12:16 AM

Originally Posted by moparx
yeah ! nosy ! that's us !!! laugh2
that flathead sounds pretty good for a split manifold and duals................ biggrin
beer


2 1/8 primaries, 3 1/2" mandrel bent, X pipe and Delta 40s........ it's surprisingly livable!
Posted By: CrAzYMoPaRGuY

Re: 1940 Plymouth Coupe finally... RUNNING!! - 05/25/23 12:25 AM

Mostly stock...... shruggy

Attached picture CoupeBottom.jpg
Posted By: Clanton

Re: 1940 Plymouth Coupe finally... RUNNING!! - 05/25/23 01:43 PM

Congrats on making noise with a great looking car!
Posted By: moparx

Re: 1940 Plymouth Coupe finally... RUNNING!! - 05/25/23 04:29 PM

can't wait to see it outside making laps. boogie
beer
Posted By: poorboy

Re: 1940 Plymouth Coupe finally... RUNNING!! - 05/25/23 11:42 PM

It is frustrating when you drop extra $$$$ with the people that are suppose to be the best and it doesn't work out that way.
I like your attitude "I'll fix it when I take it all off." At least your moving forward, many would never get over the bumps. up

All I can say is when you get it right, that first fully successful ride will make it worth all the effort.
Posted By: CrAzYMoPaRGuY

Re: 1940 Plymouth Coupe finally... RUNNING!! - 05/26/23 05:00 AM

Originally Posted by poorboy
It is frustrating when you drop extra $$$$ with the people that are suppose to be the best and it doesn't work out that way.
I like your attitude "I'll fix it when I take it all off." At least your moving forward, many would never get over the bumps. up

All I can say is when you get it right, that first fully successful ride will make it worth all the effort.


I fixed a couple Barton mistakes. No dipstick and an upper oiling issue, nothing terrible. The thing I don't like is that I was told the engine was dyno'd with that intake. It surely wasn't. I have serious doubts the engine was ever run, and I think I got a phony dyno sheet. The BSFC was even not filled out. Is what it is,

Rance Baxter did the EFI, lots of mistakes on the manifold, and it's pretty simple and obvious stuff. Ported vacuum to the IAC?? Throttle blade alignment is the biggest issue, and linkage geometry. Just bad.

And I still have to see how my John Cope tranny works lol
Posted By: CrAzYMoPaRGuY

Re: 1940 Plymouth Coupe finally... RUNNING!! - 05/26/23 05:02 AM

Originally Posted by Sniper
That's the meanest flathead I ever heard, grin


Thanks haha
It's actually quite loud, but the video makes it seem much quieter. I like the video better! lol
Posted By: CrAzYMoPaRGuY

Re: 1940 Plymouth Coupe finally... RUNNING!! - 05/26/23 05:04 AM

Originally Posted by Clanton
Congrats on making noise with a great looking car!


Thanks Clanton, it's been a long road! lol beer
Posted By: CrAzYMoPaRGuY

Re: 1940 Plymouth Coupe finally... RUNNING!! - 05/26/23 05:05 AM

Originally Posted by moparx
can't wait to see it outside making laps. boogie
beer


Soon I hope!!!
The car hasn't been washed!!! Paint two years old! lol
Posted By: SattyNoCar

Re: 1940 Plymouth Coupe finally... RUNNING!! - 05/27/23 01:51 PM



valve covers off


Flatheads have valve covers? confused whistling


Can only get better from here! beer
Posted By: Sniper

Re: 1940 Plymouth Coupe finally... RUNNING!! - 05/27/23 08:01 PM

Originally Posted by Satilite73


valve covers off


Flatheads have valve covers? confused whistling


Can only get better from here! beer


zoom, went over your head.

Flathead do have valve covers btw.

They are on the side of the block and are usually called tappet covers, but the they cover the valves too.
Posted By: SattyNoCar

Re: 1940 Plymouth Coupe finally... RUNNING!! - 05/28/23 02:25 PM

Originally Posted by Sniper
Originally Posted by Satilite73


valve covers off


Flatheads have valve covers? confused whistling


Can only get better from here! beer


zoom, went over your head.

Flathead do have valve covers btw.

They are on the side of the block and are usually called tappet covers, but the they cover the valves too.



I got it, hence the whistling emoji. I was referring to covers on top as we're used to seeing. biggrin
Posted By: Sniper

Re: 1940 Plymouth Coupe finally... RUNNING!! - 05/28/23 03:34 PM

my bad, lol.
Posted By: moparx

Re: 1940 Plymouth Coupe finally... RUNNING!! - 05/28/23 04:18 PM

when "flatheads" are mentioned, i always think of the ford motor/engine. biggrin
beer
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