Fred's 2375 Rebuild Thread |
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Fred's 2375 Rebuild Thread |
friethmiller |
Dec 31 2024, 12:12 PM
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#1
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Senior Member Group: Members Posts: 751 Joined: 10-February 19 From: Austin, TX Member No.: 22,863 Region Association: Southwest Region |
[A softball question for the Ninja and/or others]
This is the cam card that came with my 2357 engine, which was originally built by Rimco/Fat (long block) a few years ago. Can someone explain why with an intake/exhaust of 448, the lift was only set to 327 degrees? I'm about to rebuild my motor and a lot of focus will be directed at piston "deck clearance" and the valve train geometry that wasn't set correctly. Thanks. |
technicalninja |
Jan 3 2025, 09:17 AM
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#2
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Advanced Member Group: Members Posts: 2,377 Joined: 31-January 23 From: Granbury Texas Member No.: 27,135 Region Association: Southwest Region |
I'd go option 1.
JE does offer coatings done by them. Maybe biral jugs, look at chemical coatings for jugs. Some are supposed to increase cooling ability. Not sure how much I trust that. All Raby's stuff had all of the coatings! 9.2-1 Add ceramic coatings on heads/valves 9:5-1 Add digital FI 9.7-1 Add squirters 10-1 Add Nickies 10+/1 I want the old pistons and jugs you are removing if you don't re-use them. I lean heavier towards 10-1 than Vacca does. At the 10-1 level I'd probably be on "Heavy Fuel"... 100LL av-gas or E/85. I wouldn't expect this to last forever. I would expect at least 30K... And the deck height at .045 is BECAUSE they're forged, have a lot more side clearance, and can wiggle MORE in the bore. You NEED more deck clearance on forged. We could cheat that height around (little bit) to give lower compression if we wanted. |
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