Re: Flathead project
 

Heads off...freeze plug bulges confirmed...'39-40 221

Re: Flathead project
 

Distributor, water pumps, oil pan removed, yuk!!!! what a mess in side the block...sludge city!!! LOL!!! So far I can't see any cracks.

Attachment 119133

Attachment 119134

Re: Flathead project
 

Took the head gaskets off yet?

Mart.

Re: Flathead project
 

Mart,
I left the head gaskets on for now, to protect the mating surface from being damaged while taking the motor apart.

Attachment 119389

Attachment 119390

Re: Flathead project
 

I think this motor has had work done to it in the past, found one of the tappets to be slotted, the rest are the non slotted type..

Attachment 119392

Re: Flathead project
 

Some more pics,

Attachment 119986

Attachment 119987

Attachment 119988

Attachment 119989

Attachment 119990

Re: Flathead project
 

And more, Almost ready to bring the block to the machine shop for claeaning and a mag test for cracks. If all OK then a pressure test...I desided that I will bring the block to Eastwoods Auto Machine...
Attachment 119991

Attachment 119992

Re: Flathead project
 

The last "Flathead" I tore down and got to this point, pulling the pan was painfull. It had the dreaded pan rail cracks on both side:(

Re: Flathead project
 

Hey Phil, up here in Me. the salt water is alot cooler than it is in Florida. the clams have to bury in the mud the keep warm. LOL Walt

Re: Flathead project
 

I don't see any sign of the steel sleeves in the bottom end pic. If it's still 3-1/16 I'd call it a 39 engine. Walt

Re: Flathead project
 

Walt, there isn't any sleeves, I will call it a 39..No cracks in the block that I can see...

Re: Flathead project
 

The block does not have any cracks in it and it passed the pressure test. More pics...


Attachment 120899

Attachment 120900

Attachment 120901

Attachment 120902

Re: Flathead project
 

Looks very nice. Congrats on the crack free status. What process did they use to clean it up?

Mart.

Re: Flathead project
 

It was dipped in a hot tank about 3 times, 2 days per dip. Mark at Eastwoods auto said it was a dirty block. After the hot dip Mark pressure washed it. He then rough bored the cylinders .030 over.

Re: Flathead project
 

Update, the motor is home from the machine shop, Eastwoods Auto Machine in Somersville CT. Took the advise of quickchange34 and mart and made a bracket to hold the motor from the exhaust ports...see pics...Thanks

Attachment 131922

Attachment 131923

Re: Flathead project
 

I keep looking at the intake manifold surface on the block, Of all the pic I still cain't tell if it's a raised intake surface, in some of the pic it looks like it does. But, the engines with a raised surface were late 41-42 and had sleeves, so with no sleeves I'd call it a 39. Walt

Re: Flathead project
 

Walt, Yes it's a 39. Went to VanPelt sales webpage and I was able to figure it out by there section on how to ID a flathead motor....

Re: Flathead project
 

I see the head studs have been removed. Did this present any problems? It seems like the hardest problem with the crusty blocks I have worked on.

Re: Flathead project
 

I did try and remove the head studs myself, but they wouldn't budge. When the block was dipped into the cleaning tank the studs then were able to be removed. I had the machine shop remove them and two of them had to be drilled out.

Re: Flathead project
 

Just a little warning - don't run a tap down the head stud holes - they are a tight thread and a tap will open them out. Use a thread restorer or an old stud or bolt with a slot cut in it.

If you already knew this I apologise, but it isn't obvious to a novice.

Mart.