45 crank and high comp pistons

Both should be very easy to find.

I just installed a set of 4.125 (7.5 - 1 compression) and a 4.5" (WD45) crankshaft in a 201 block today. My pistons and sleeves came from Reliance. I have had them on the shelf since 2015, but I am sure they are still available.

Edited by WF owner - 30 Apr 2023 at 6:33pm

Absolutely great info and that's the kinda compression I'm looking for. I've had several over the years but parts nowadays are hard to come by. I didn't know if aomeone may have a old set or is there one I could use off the shelf. It's a pulling engine 100%..Just a play toy. Just want to be competitive in stock class you know.

1954 WD45

Regular WD 4-1/8 pistons with a 45 crank will boost compression considerably. Isn’t there a sticky on the subject somewhere?

I have a good set of 4&1/8" flattops I would sell. Not sure on the pin height.

I sent you a message

1954 WD45

Sorry that I’m just responding to your question. On this engine we used the WD45 distributor with the 12 volt Pertronix electronic conversion. I like this setup for this one…but we run magnetos on all of our other AC pullers. Weird situation the engine that we built that was in a 1941 WC, had a dealer replacement block that is the WD45 type but had ALL WC internal components & external bolt ons. We also had a complete WD45 engine with a freeze damaged block and so EVERYTHING including the tall head, manifolds, carburetor, distributor & crankshaft replaced the WC stuff in the dealer replacement block. There is no reason that a good WC/earlyWD block with the side plate can’t be used. Also the only reason we used the 45 “tall” head is because it had been recently reconditioned before the freeze damage. Otherwise we would have used the short head, because it was also a good head that was mechanically sound. For pistons we used Power Seal brand 4.125” 8:1 crater type. In theory the tall head is better suited for crater pistons than the short head, but I think any difference in performance is extremely negligible.

Edited by Kip-Utah - 18 May 2023 at 8:51pm

HANSEN'S OLD ORANGE IRON. Showing, Pulling, & Going!!

What's a good plug? Anything but Champion! back in the 70's, Dad used to say Champions did not work well in an AC engine. The consensus, from the majority of AC "experts" is the same. Back in the day, AC plugs were what worked best. Now Autolite and NGK are the most recommended plugs.

Points are generally foreign made, along with condensors, and poor quality. Most recommend changing to electronic ignition (Pertronix is the most recommended).

My suggestion is that you go to Steve in NJ's website Other Technical Info (bb-customcircuits.com) and read some of his information. Steve is very knowledgeable and helpful, if you need advice.

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TennMatt1 Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 12 Oct 2015 Location: Southern KY Points: 71	Post Options Post Reply Quote TennMatt1 Report Post Thanks(0) Quote Reply Topic: 45 crank and high comp pistons Posted: 30 Apr 2023 at 5:10pm
	Wondering if anyone knows where I could source some high compression 4.125 pistons and a good 45 crank.
	1954 WD45

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WF owner Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 12 May 2013 Location: Bombay NY Points: 4792	Post Options Post Reply Quote WF owner Report Post Thanks(0) Quote Reply Posted: 30 Apr 2023 at 6:30pm
	Both should be very easy to find. I just installed a set of 4.125 (7.5 - 1 compression) and a 4.5" (WD45) crankshaft in a 201 block today. My pistons and sleeves came from Reliance. I have had them on the shelf since 2015, but I am sure they are still available. Edited by WF owner - 30 Apr 2023 at 6:33pm

DrAllis Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 12 Sep 2009 Points: 21021	Post Options Post Reply Quote DrAllis Report Post Thanks(0) Quote Reply Posted: 30 Apr 2023 at 7:29pm
	Look down below to a topic titled "D-17 pistons". At the end of that I list what it would take. Flat top 4 1/8" pistons with 2.500" compression height will get you 10.3 to 1 compression ratio. 2.550" compression height begets 11.3 to 1 compression ratio. Both would require 106 octane or better fuel and retarded ( 18 to 20 degree BTDC) timing.

TennMatt1 Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 12 Oct 2015 Location: Southern KY Points: 71	Post Options Post Reply Quote TennMatt1 Report Post Thanks(0) Quote Reply Posted: 30 Apr 2023 at 8:57pm
	Absolutely great info and that's the kinda compression I'm looking for. I've had several over the years but parts nowadays are hard to come by. I didn't know if aomeone may have a old set or is there one I could use off the shelf. It's a pulling engine 100%..Just a play toy. Just want to be competitive in stock class you know.
	1954 WD45

HudCo Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 29 Jan 2013 Location: Plymouth Utah Points: 3666	Post Options Post Reply Quote HudCo Report Post Thanks(0) Quote Reply Posted: 30 Apr 2023 at 10:15pm
	you would think a wd 45 crank would be easy to come by, sure not in my neck of the woods i wood like to find a whole 45 engine around hereso i can use the distributer and head also for my puller engine

TramwayGuy Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 19 Jan 2010 Location: Northern NY Points: 11483	Post Options Post Reply Quote TramwayGuy Report Post Thanks(0) Quote Reply Posted: 30 Apr 2023 at 11:14pm
	Regular WD 4-1/8 pistons with a 45 crank will boost compression considerably. Isn’t there a sticky on the subject somewhere?

Phil48ACWC Members Profile Send Private Message Find Members Posts Add to Buddy List Silver Level Joined: 17 Jan 2013 Location: Vermont Points: 293	Post Options Post Reply Quote Phil48ACWC Report Post Thanks(0) Quote Reply Posted: 01 May 2023 at 6:31am
	I have a WD45 Crank, never turned, great condition. I'd let it go for $500 or good reasonable offer, plus shipping. Edited by Phil48ACWC - 02 May 2023 at 6:44am

IBWD MIke Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 08 Apr 2012 Location: Newton Ia. Points: 3858	Post Options Post Reply Quote IBWD MIke Report Post Thanks(1) Quote Reply Posted: 01 May 2023 at 7:26am
	I have a good set of 4&1/8" flattops I would sell. Not sure on the pin height.

Kip-Utah Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 14 Sep 2009 Location: Southern Utah Points: 874	Post Options Post Reply Quote Kip-Utah Report Post Thanks(1) Quote Reply Posted: 01 May 2023 at 2:18pm
	I'm not sure if Steiner Tractor still sells "new" WD45 cranks, but when I built my WC puller engine several years ago they did. They also did reconditioned cranks on exchange & that's actually what we did. The rebuilt crank was shipped with the proper undersized bearings.
	HANSEN'S OLD ORANGE IRON. Showing, Pulling, & Going!!

TennMatt1 Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 12 Oct 2015 Location: Southern KY Points: 71	Post Options Post Reply Quote TennMatt1 Report Post Thanks(0) Quote Reply Posted: 01 May 2023 at 7:39pm
	I sent you a message
	1954 WD45

HudCo Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 29 Jan 2013 Location: Plymouth Utah Points: 3666	Post Options Post Reply Quote HudCo Report Post Thanks(0) Quote Reply Posted: 01 May 2023 at 10:10pm
	kip -utah are you useing the mag or distrubuter , we are a stiener dealer but i really need the whole engine, are you using the 201 block i have plenty of those

Kip-Utah Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 14 Sep 2009 Location: Southern Utah Points: 874	Post Options Post Reply Quote Kip-Utah Report Post Thanks(0) Quote Reply Posted: 18 May 2023 at 8:27pm
	Sorry that I’m just responding to your question. On this engine we used the WD45 distributor with the 12 volt Pertronix electronic conversion. I like this setup for this one…but we run magnetos on all of our other AC pullers. Weird situation the engine that we built that was in a 1941 WC, had a dealer replacement block that is the WD45 type but had ALL WC internal components & external bolt ons. We also had a complete WD45 engine with a freeze damaged block and so EVERYTHING including the tall head, manifolds, carburetor, distributor & crankshaft replaced the WC stuff in the dealer replacement block. There is no reason that a good WC/earlyWD block with the side plate can’t be used. Also the only reason we used the 45 “tall” head is because it had been recently reconditioned before the freeze damage. Otherwise we would have used the short head, because it was also a good head that was mechanically sound. For pistons we used Power Seal brand 4.125” 8:1 crater type. In theory the tall head is better suited for crater pistons than the short head, but I think any difference in performance is extremely negligible. Edited by Kip-Utah - 18 May 2023 at 8:51pm
	HANSEN'S OLD ORANGE IRON. Showing, Pulling, & Going!!

trikesbikes@gmail.co Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 23 Feb 2023 Location: Minnesota Points: 15	Post Options Post Reply Quote trikesbikes@gmail.co Report Post Thanks(0) Quote Reply Posted: 29 May 2023 at 6:06am
	I hope I am in the right place to ask a question ! I pull a WD 45 and need a tune up! Wondering what is a good plug and points to use in it

WF owner Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 12 May 2013 Location: Bombay NY Points: 4792	Post Options Post Reply Quote WF owner Report Post Thanks(0) Quote Reply Posted: 29 May 2023 at 6:37am
	What's a good plug? Anything but Champion! back in the 70's, Dad used to say Champions did not work well in an AC engine. The consensus, from the majority of AC "experts" is the same. Back in the day, AC plugs were what worked best. Now Autolite and NGK are the most recommended plugs. Points are generally foreign made, along with condensors, and poor quality. Most recommend changing to electronic ignition (Pertronix is the most recommended). My suggestion is that you go to Steve in NJ's website Other Technical Info (bb-customcircuits.com) and read some of his information. Steve is very knowledgeable and helpful, if you need advice.