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| Tractor Pulling Discussion Forum |
Topic: Re: john deere 70- 730 diesel
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| Brad Vinkemeier
01-09-2013 15:38:48
174.230.192.209
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By how much bigger are 820 valves over 730 valves
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| buickanddeere
01-09-2013 18:08:15
209.240.122.172
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Re: john deere 70- 730 diesel in reply to Brad Vinkemeier, 01-09-2013 15:38:48
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| 830 uses 2.075" and 2.605".
The 70 uses 1-29/32" or 1.90" and 2-3/8" or 2.375" valves. So the intake valves will move out 115 thou farther.
The exhaust valves will move out 87.5 thou. Ain't gonna run out of room.
Valve size isn't everything. Cam timing, port blending and multi-angle seats are major players. The shape of the intake valve matters too.
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| Brad Vinkemeier
01-09-2013 21:00:12
174.238.96.71
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Re: john deere 70- 730 diesel in reply to buickanddeere, 01-09-2013 18:08:15
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| Yes i know but thanks for the specs i was planning on having that all done also thanks again
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