SD220 Leak Down Results


IHC in the early to mid-fifties.

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Golden Jubilee
Golden Jubilee

Posts: 4833

Joined: Thu Nov 29, 2012 11:47 am

Location: Bothell, Washington

Post Mon Aug 26, 2019 4:55 pm

Re: SD220 Leak Down Results

I did this with my 37 Diamond T, in the truck recondition,
put in new rod and crank bearings same size as took out,
pulled pistons, and honed cylinders new rings same as took out,
did a in the truck valve seat grind, - flathead motor, lapped the valves, put it all back together, ran great, still does
Gentle Men! you can't fight in here! This is the war room!

Golden Jubilee
Golden Jubilee

Posts: 4563

Joined: Thu Nov 29, 2012 9:28 pm

Location: Lyman, IA

Post Mon Aug 26, 2019 8:41 pm

Re: SD220 Leak Down Results

Took an old Dodge 225 that was burning a Qt every 25 miles, and after the re ring went to a qt every 1500 or so. Ran it up to 380,000 miles.

Golden Jubilee
Golden Jubilee

Posts: 520

Joined: Mon Dec 17, 2012 10:50 am

Location: Fletcher, OK

Post Tue Aug 27, 2019 10:39 am

Re: SD220 Leak Down Results

Sounds like a straight forward freshening up; valve job, new rings, and new rod bearings. I don't think there is much reason to get any deeper into it than that.
52 L110
61 C112
68 Cadillac Coupe DeVille

Rusty Driver
Rusty Driver

Posts: 181

Joined: Thu May 10, 2018 7:15 am

Post Thu Aug 29, 2019 9:33 am

Re: SD220 Leak Down Results

kevin wrote:when you find out what size mains, rod bearings and 3 or 4 rings per piston you need, let me know I have a few sets of them. I have no need for them.
kevin


Private Message Sent.

Golden Jubilee
Golden Jubilee

Posts: 1228

Joined: Fri Nov 30, 2012 6:32 am

Location: Minnesota

Post Thu Aug 29, 2019 2:40 pm

Re: SD220 Leak Down Results

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