Flathead advice and help needed

[Desoto291Hemi]

40Deluxe,
On the relief,,that was what I was thinking,,,,it seems to me I would lose more compression than I would ever gain back with flow.
Unless it was a racing engine,,,but this is not my plan.
Seems to me,,,if you need the area to get more flow,,,,massage the head area between the valves and piston.

The Accel unit is not vacuum advance,,,,but I wasn’t quite planning on it being completely streetable. I wanted some really good performance, not really considering mileage at this time.
I would really like to have at least 9 to 1 compression,,,,wishing more for close to 10 to 1.
I am reading all I can about this before I make any big decisions.

Thank you for the information,,,,and please give me more if possible.
I won’t turn any good advice down .

Tommy

[JSeery]

When you get JWLs book this is all covered in detail with dyno data to back it up.

[Desoto291Hemi]

Hey guys,,,sorry about the delay here.
I tried to post some more pics here and could not get it to let me.
It is like trying to pull teeth,,,Lol.
Anyway,,,I have posted a lot of pics on the Hamb,,,you can visit there and view the thread.

My username is the same over there,,,and the title of the thread is the same as this one here.
I will try to get them posted here when possible.

Tommy

[JSeery]

It's most likely a size issue. The HAMB doesn't have the same size limit, on the Barn jpg files need to be less than around 540kb, most photo files are in the mb range. If you reduce the file size they will post.

[Ol' Ron]

You have allot of good ideas there, and most are doable. However, you must have a reason to make a modification. What gains will these changes make.Milling the head for .045 is a very good idea, because it improves low end throttle response and improves fuel mileage. But instarging the valves is only beneficial at hi RPms, and the cost is very high JWLs book is a good choice.

[Fordestes]

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There are tradeoffs with flow versus high compression, it's the nature of the design ,that's why I run blowers for flow and compression ,however the superchargers tend to have their own set of problems which need to be addressed in some cases . My dad always would hand me a bushel basket to carry in order to try and catch the rods as he would say ''when they fly out .' ' check out the books available it will save a lot of headaches later down the road .

[Desoto291Hemi]

I just tried again to upload some pics and it said that a security token was missing.
Oh well,,,,they are some really nice pics of a pretty nice engine.
It is the best looking 70 year old core that I have ever seen.
It is a 1949 Mercury Flathead,,,,no internal rust,,,not stuck at all.
I have got it torn down to the cam and lifters right now.
The bores look fantastic,,the crank looks fantastic,,,I couldn’t be happier to find it.
Maybe I will figure the problem out here soon.

Tommy

[tubman]

Tommy,

Emailing the pictures to myself works for me. There are more efficient ways to do it, but this is the simplest to explain.

Denny

[JSeery]

Originally Posted by Desoto291Hemi

I just tried again to upload some pics and it said that a security token was missing.
Oh well,,,,they are some really nice pics of a pretty nice engine.
It is the best looking 70 year old core that I have ever seen.
It is a 1949 Mercury Flathead,,,,no internal rust,,,not stuck at all.
I have got it torn down to the cam and lifters right now.
The bores look fantastic,,the crank looks fantastic,,,I couldn’t be happier to find it.
Maybe I will figure the problem out here soon.

Tommy

If you email the photos to me I will post them for you: [email protected]