W / G226 Mods

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   It looks like I've got the basic G226 dimensions fairly close so, I thought I'd do some things with the figures that might be interesting.

Since this is the pulling part of the forum, everything will deal with the 4.125 bore. If you deal with the 4.00" bore, the figures will be 14 CI less and about .2 less compression. I don't know if the 4.125 piston/sleeve kits use the std stock, 4.000" bore, 2.530 CH but, I will assume that for all my data. All data, is based on a deck height of 12.656 and a rod length of 7.500.

First up, for those that want custom pistons made, the compression height of the piston, for different compression ratio's. 

4.125" Bore
2.590 = 8.01
2.630 = 8.52
2.670 = 9.06
2.700 = 9.51
2.730 = 10.02

So, each increase in CH, of ~.035, will give you a 1/2 point of compression.

Next up, is the stock CH of 2.530 and a welded, offset ground crankshaft to a stroke of 4.750.

You can also increase the stroke to 4.800 and get 257 CI and a CR of 9.75 with the same CH of 2.530.

I hope this helps someone in their engine build.

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frnkeore Members Profile Send Private Message Find Members Posts Add to Buddy List Silver Level Joined: 07 May 2019 Location: Southern Oregon Points: 362	Post Options Post Reply Quote frnkeore Report Post Thanks(0) Quote Reply Topic: W / G226 Mods Posted: 20 Jun 2019 at 1:59pm
	It looks like I've got the basic G226 dimensions fairly close so, I thought I'd do some things with the figures that might be interesting. Since this is the pulling part of the forum, everything will deal with the 4.125 bore. If you deal with the 4.00" bore, the figures will be 14 CI less and about .2 less compression. I don't know if the 4.125 piston/sleeve kits use the std stock, 4.000" bore, 2.530 CH but, I will assume that for all my data. All data, is based on a deck height of 12.656 and a rod length of 7.500. First up, for those that want custom pistons made, the compression height of the piston, for different compression ratio's. 4.125" Bore 2.590 = 8.01 2.630 = 8.52 2.670 = 9.06 2.700 = 9.51 2.730 = 10.02 So, each increase in CH, of ~.035, will give you a 1/2 point of compression. Next up, is the stock CH of 2.530 and a welded, offset ground crankshaft to a stroke of 4.750. You can also increase the stroke to 4.800 and get 257 CI and a CR of 9.75 with the same CH of 2.530. I hope this helps someone in their engine build.
	Frank 1959 D17 Series I #24001+, '59 D14 '55 & '59 Ford 850 & 861 Ferguson TO 35 Deluxe, Oliver 70 and 5 more.

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mjbower Members Profile Send Private Message Find Members Posts Add to Buddy List Silver Level Joined: 04 Oct 2009 Location: Michigan Points: 255	Post Options Post Reply Quote mjbower Report Post Thanks(0) Quote Reply Posted: 23 Jun 2019 at 9:01am
	That's good information thanks for doing the math answers a lot of questions.

frnkeore Members Profile Send Private Message Find Members Posts Add to Buddy List Silver Level Joined: 07 May 2019 Location: Southern Oregon Points: 362	Post Options Post Reply Quote frnkeore Report Post Thanks(0) Quote Reply Posted: 23 Jun 2019 at 11:01am
	Your welcome, I'm happy to help.
	Frank 1959 D17 Series I #24001+, '59 D14 '55 & '59 Ford 850 & 861 Ferguson TO 35 Deluxe, Oliver 70 and 5 more.

Carl(NWWI) Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 13 Sep 2009 Location: NW WI Points: 954	Post Options Post Reply Quote Carl(NWWI) Report Post Thanks(0) Quote Reply Posted: 11 Jul 2019 at 11:10pm
	So what would the compression ratio be for the 4.125 flat top pistons? Edited by Carl(NWWI) - 11 Jul 2019 at 11:11pm

frnkeore Members Profile Send Private Message Find Members Posts Add to Buddy List Silver Level Joined: 07 May 2019 Location: Southern Oregon Points: 362	Post Options Post Reply Quote frnkeore Report Post Thanks(0) Quote Reply Posted: 12 Jul 2019 at 1:10am
	11.016
	Frank 1959 D17 Series I #24001+, '59 D14 '55 & '59 Ford 850 & 861 Ferguson TO 35 Deluxe, Oliver 70 and 5 more.

d17brown Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 11 Sep 2009 Location: farley iowa Points: 1689	Post Options Post Reply Quote d17brown Report Post Thanks(0) Quote Reply Posted: 17 Jul 2019 at 7:11pm
	whats compression ratio, for 4.6 bore, 6 inch stroke
	phil

frnkeore Members Profile Send Private Message Find Members Posts Add to Buddy List Silver Level Joined: 07 May 2019 Location: Southern Oregon Points: 362	Post Options Post Reply Quote frnkeore Report Post Thanks(0) Quote Reply Posted: 17 Jul 2019 at 7:34pm
	Way to much If you use the standard compression height of 2.53 and standard 7.5 rods, the piston will stick out of the block, 3/8". If you can give me the C/H of the pistons and rod length you use, I can give you a answer for flat top pistons, if cupped, I need the cup volume, too.
	Frank 1959 D17 Series I #24001+, '59 D14 '55 & '59 Ford 850 & 861 Ferguson TO 35 Deluxe, Oliver 70 and 5 more.

d17brown Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 11 Sep 2009 Location: farley iowa Points: 1689	Post Options Post Reply Quote d17brown Report Post Thanks(0) Quote Reply Posted: 18 Jul 2019 at 12:48pm
	Farmall h rods. Flat top pistons
	phil

frnkeore Members Profile Send Private Message Find Members Posts Add to Buddy List Silver Level Joined: 07 May 2019 Location: Southern Oregon Points: 362	Post Options Post Reply Quote frnkeore Report Post Thanks(0) Quote Reply Posted: 19 Jul 2019 at 12:12am
	Do you or anyone else, have the center to center length of the Farmall H rods? Edited by frnkeore - 19 Jul 2019 at 12:44pm
	Frank 1959 D17 Series I #24001+, '59 D14 '55 & '59 Ford 850 & 861 Ferguson TO 35 Deluxe, Oliver 70 and 5 more.

frnkeore Members Profile Send Private Message Find Members Posts Add to Buddy List Silver Level Joined: 07 May 2019 Location: Southern Oregon Points: 362	Post Options Post Reply Quote frnkeore Report Post Thanks(0) Quote Reply Posted: 19 Jul 2019 at 12:41pm
	I found a TRW listing for the H rods. They are appox 7.27 C/C. I will still need the compression height of your pistons, to do the calculation. The C/H is the distance from the top of the piston, to the center of the wrist pin or if you can give me the distance from the edge of the wrist pin bore, to the top and the diameter of the wrist pin, I can get the C/H. BTW, that is quite a bit of rod angle, 24.37 deg. Edited by frnkeore - 19 Jul 2019 at 12:45pm
	Frank 1959 D17 Series I #24001+, '59 D14 '55 & '59 Ford 850 & 861 Ferguson TO 35 Deluxe, Oliver 70 and 5 more.

d17brown Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 11 Sep 2009 Location: farley iowa Points: 1689	Post Options Post Reply Quote d17brown Report Post Thanks(0) Quote Reply Posted: 19 Jul 2019 at 8:28pm
	i think it is 2.25
	phil

frnkeore Members Profile Send Private Message Find Members Posts Add to Buddy List Silver Level Joined: 07 May 2019 Location: Southern Oregon Points: 362	Post Options Post Reply Quote frnkeore Report Post Thanks(0) Quote Reply Posted: 20 Jul 2019 at 1:48am
	I don't think the C/H can be 2.25. That gives a CR of 29.78. To high for alcohol and I don't think diesel would even hold together at that CR. I changed the C/H to 1.86 and that gives 11.03. With the short cam timing of these engines, I think it would take Av gas to work with that CR. Edited by frnkeore - 20 Jul 2019 at 1:49am
	Frank 1959 D17 Series I #24001+, '59 D14 '55 & '59 Ford 850 & 861 Ferguson TO 35 Deluxe, Oliver 70 and 5 more.

danno067 Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 29 Jul 2019 Location: Wisconsin Points: 12	Post Options Post Reply Quote danno067 Report Post Thanks(0) Quote Reply Posted: 29 Jul 2019 at 7:54pm
	frnkeore, I'm a little late but i have one that was dumped in my lap that someone else started. Could you run the math on this. Stroke 5.750 Bore 4.560 Piston to Deck height .642 Rod length pin to pin 8" Piston comp height 1.1605 Thanks much. Edited by danno067 - 29 Jul 2019 at 7:55pm

frnkeore Members Profile Send Private Message Find Members Posts Add to Buddy List Silver Level Joined: 07 May 2019 Location: Southern Oregon Points: 362	Post Options Post Reply Quote frnkeore Report Post Thanks(0) Quote Reply Posted: 31 Jul 2019 at 12:51pm
	I take it that this isn't a G226 block? the deck height comes out different and I don't think you can get a 5.75 bore in a G226. You didn't give a head gasket thickness so, I used a custom .040 copper one.
	Frank 1959 D17 Series I #24001+, '59 D14 '55 & '59 Ford 850 & 861 Ferguson TO 35 Deluxe, Oliver 70 and 5 more.