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| atwater
09-07-2012 06:00:30
69.207.31.89
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anyone know the pin height/dia for the 420/430 pistons?
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| jd b puller
09-08-2012 19:04:23
65.190.135.248
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Re: john deere 420/430 pistons in reply to 42 M, 09-07-2012 06:00:30
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| Atwater, the 420 piston has a 2.25" compression height.
Would these work for you? They are 4.375" (+0.125 Over) Unstyled B pistons.
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| atwater
09-09-2012 10:39:54
69.207.31.89
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Re: john deere 420/430 pistons in reply to jd b puller, 09-08-2012 19:04:23
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| those are higher compression right? i was trying to keep the compression down, hopefully low enough to burn kero.
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| buickanddeere
09-09-2012 14:29:02
209.240.122.171
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Re: john deere 420/430 pistons in reply to atwater, 09-09-2012 10:39:54
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| Wow.........talk about being able to kill the mood and excitement on a pulling board. With just the words "like to burn kerosene".
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| atwater
09-09-2012 15:40:36
69.207.31.89
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Re: john deere 420/430 pistons in reply to buickanddeere, 09-09-2012 14:29:02
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| jd b puller
09-09-2012 16:43:47
65.190.135.248
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Re: john deere 420/430 pistons in reply to atwater, 09-09-2012 15:40:36
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| | Yeah, kind of a buzzkill burning Kero on the pulling board... So anyways, Yes, these are set up for about 8:1 compression. I can knock about 0.300" off of them (maybe a tick more) and get the compression to about 5.9:1. If you don't like those, let's just start over with a new piston. These are just ones that I designed and stock. I can do whatever you want. E-mail me or call for more info.
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| atwater
09-09-2012 18:23:51
69.207.31.89
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Re: john deere 420/430 pistons in reply to jd b puller, 09-09-2012 16:43:47
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| i will contact you some time this week on the b pistons. as far as the buzz kill... dont worry in a few weeks i will update on another project far more interesting:)
here's a video of the only puller i've got going at the moment.
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| atwater
09-09-2012 18:27:29
69.207.31.89
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Re: john deere 420/430 pistons in reply to atwater, 09-09-2012 18:23:51
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| hmm i seem to be having issues with this computer again...
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| atwater
09-09-2012 18:37:26
69.207.31.89
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Re: john deere 420/430 pistons in reply to atwater, 09-09-2012 18:27:29
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| well apparently i cant post video from facebook?
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| 630rich
09-08-2012 13:41:54
98.237.6.115
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Re: john deere 420/430 pistons in reply to atwater, 09-07-2012 06:00:30
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| they do pull tough at stock...a hot one would be cool to play with.
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| VicS
09-07-2012 18:52:16
70.195.64.195
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Re: john deere 420/430 pistons in reply to atwater, 09-07-2012 06:00:30
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| Some body should make a really tough 430 puller in the light classes. Should be able to stroke it to 6 or 6.25 and bore it to 4.625 to 4.75. 221 cu in. Then grind the cam to trade the intakes and exhaust valves. Should have a 80 plus hp. Also the rpm's are 2400 or so. If I didn't have so many uncompleted projects I would do it myself. :-) Vic
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| buickanddeere
09-09-2012 10:16:26
209.240.122.171
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Re: john deere 420/430 pistons in reply to VicS, 09-07-2012 18:52:16
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| Two main bearing Dubuque crankshaft failed almost immediately when diesel experiments were attempted.
The later 440 industrial gassers were factory souped with higher compression, larger carb, larger manifolds and improved head ports.
I don't imagine a built 420 Dubuque two cylinder out powering a bored and stroked FarmAll H.
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| VicS
09-10-2012 18:49:08
70.195.1.161
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Re: john deere 420/430 pistons in reply to buickanddeere, 09-09-2012 10:16:26
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| I agree, but sometimes it takes just enough. A built little 40-420-430 should have enough to pull up to 4000 lb in farm stock. 15.5 X 38 and 3 mph. even on a clay track and short chain.
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| atwater
09-08-2012 05:55:11
69.207.31.89
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Re: john deere 420/430 pistons in reply to VicS, 09-07-2012 18:52:16
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| would be interesting. my question about pistons stems from attempting to find a piston to use in a early BO. i dont want to raise the compression much if at all. i dont want to convert to electric start.
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| Josh Blackburn
09-07-2012 19:34:58
174.232.3.2
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Re: john deere 420/430 pistons in reply to VicS, 09-07-2012 18:52:16
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| I've often thought of doing one but always wondered if Trans will hold up on power track
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| VicS
09-09-2012 07:02:07
70.195.0.141
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Re: john deere 420/430 pistons in reply to Josh Blackburn, 09-07-2012 19:34:58
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| My 435 is the same, I just went and put new bearings in it and set it up real tight. I have broken bull pinions, and twisted those shafts. Can put a new one in, in a couple of hours. One without independent pto would be better. Could put a truck clutch of some kind in it.
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| buickanddeere
09-09-2012 10:20:50
209.240.122.171
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Re: john deere 420/430 pistons in reply to VicS, 09-09-2012 07:02:07
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| What gear are you pulling in and the weight class? Tire size and track type?
The traction clutch on mine never slips. The Spicer clutch was rebuilt with clutch fiber material on the entire diameter of the clutch disk. There was a choice of three different friction ratings and the grabbiest was used.
Twisted the shafts between the differential and the bull gears?
Any failures of the ring and pinion or using the pre 31,000 serial number model 1010 R&P ?
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| VicS
09-14-2012 09:39:57
70.195.1.161
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Re: john deere 420/430 pistons in reply to buickanddeere, 09-09-2012 10:20:50
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| I'm sorry didn't answer your question about bull pinion gears. knocke's teeth off the little gear. Also have busted the spider gears. I think this was my fault, should have replaced them when I had it apart.
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| VicS
09-14-2012 09:34:49
70.195.1.161
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Re: john deere 420/430 pistons in reply to buickanddeere, 09-09-2012 10:20:50
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| I am pulling up to 4500, 4000 is better 3500 better yet. even 3250. 18.4 X 34 full cut tires. Low gear with stock gears. 4mph max. Will power out sometimes in 4500. But if you go further it takes more power.
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