Engine rebuild

I have a do you 17 going to end up rebuilding motor wondering how I could get to maybe 70 hp is that something that is capable of being done on pump gas? Feel free to give me any tips anyone might have

Thanks be reading on stuff here that goes back 20 years just signed up day ago. I thought going with the 4 1/8 would actually drop compression figured that would be the compression ratio I would be looking for I see they make an LP kit or high octane kit with those parameters I think forgot to say it was a series 3. S# 701 12

Forgot to say, is it worth porting and polishing head

Thanks for your input in time

Any place that you recommend dealing with wind buying rebuild kits

I've used Ross Pistons over the years. Will make me whatever I want, and I always design the Power Crater piston bowl in the top. So, money not being a problem, source yourself four new 4 1/8" sleeves by themselves and have custom pistons made to your desired compression ratio to fit those new sleeves.

Putting D 19 carb on that involve some new connecting rods to be completed or not seeing that you’re talking about twisting it up to 1800 versus 1650 do I need different governor weights to accomplish that? And what is the difference between G block and W block I got a WD 45, which is supposedly the same block but does not look the same. 45 has a big plate on the casting behind distributor or a magneto or whatever you wanna call it.

I thought this started out as a thread about a D-17 tractor/D-17 engine ??  Now, you're describing a WC/WD block with a plate on the right side??? Are we talking tractor pulling here??? or do you want to use this engine to farm with ???   Your BEST engine build begins with a G-226/D-17 engine that has 3 inch diameter main bearings in it. The WC/WD/WD45 engine family has 2 1/2" diameter mains.  D-17 conn rods are fine, but the newer the engine is the better, as the forgings improved in the later engines. There are different governor weights and things to do to the governor without going over 2100 RPM high idle/no load.  D-19 carb requires mods to make it fit, YES.   Why don't you get the engine built and running with a D-17 carb and go from there. I loaned Berry Cams a brand new AC 175 camshaft to make a "pattern" from 30+ years ago. They should know how to do it, but I understand the people I dealt with aren't there any more.  EDIT:  If this engine is to be used as a"farming" engine, and used at the highest HP it can develop a good deal of the time, let it be known to you, it will not run as many hours of service life as a bone stock engine. It can't. You will be increasing the speed of wear on crankshaft main and rod bearings from the extra pressure from making HP. The more hours it spends making 70 HP the less hours it will run before needing bearings. Horsepower ain't for free!!!  If it is used far more hrs at a lesser HP output and occasionally high HP output, that is a good thing for longer life.

Edited by DrAllis - 26 Nov 2023 at 10:46am

So I’m basically looking for the horsepower to run a baler, hoping I would needn’t to run it wide open no I don’t know what Baler I will be using yet was hoping to run some small round baler like 30 bales.

A stock D17 gas or diesel will handle a square baler with ease. My WD has no issue so expecting my D17D to handle it with ease next year. I can’t wait until hay season next year…I hope we have one after this years disaster year.

I have High Compression Flattops in my D17 that I searched for a long time to find. They are in the 8 or higher compression range. Look for SK156 pistons, They will give you a few more HP. 

Thanks sk# number yes round bales

is that a wd 4 inch stroke piston

Good to know timing thanks knowI just need to get out it. Dang cold out though. let you know how it goes after I get all my measurements.