12-10-2022, 12:30 PM | #1 |
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FB25 shortblock FA20 heads
Has anyone ever successfully installed a FB25 short block on fa20 heads?
Saw some discussion where the starter needs to be moved to other side transmission, fa 20 piston domes have a (bigger?) dish in them for direct injection, and possibly the combustion chamber on the head possibly needed milled. https://www.ft86club.com/forums/show...t=45926&page=4 Looks to me like the transmission could possibly be milled out to have a left side starter without an adapter plate, and one only one bolt appears it would need left out of bellhousing. But unsure of other issues, thoughts? |
12-10-2022, 12:47 PM | #2 |
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Nah, Subi engine families don't lego like Hondas.
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12-10-2022, 12:58 PM | #3 |
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Not sure if accurate but I think Jet86 (post#70) on this thread said the heads would bolt on the block
https://www.ft86club.com/forums/show...?t=2158&page=5 Just wanting to know what the exact issue with it was- if it was just not worth the trouble or not possible |
12-10-2022, 04:23 PM | #4 |
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Not to mention thinner and smaller in diameter rod journals. No thanks.
https://www.ft86club.com/forums/show...3&postcount=66
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12-11-2022, 04:02 PM | #5 | |
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Quote:
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12-12-2022, 11:34 AM | #6 | |
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Quote:
I know it was discussed in that dudes NA build thread but I don't remember the outcome. I think he went with the FA20 crank and a custom rod/piston. If I get a chance I should reread the thread even though it is like 49 pages and 1/3 of it not even involving the build. https://www.ft86club.com/forums/showthread.php?t=63901
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12-12-2022, 11:52 AM | #7 | |
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Quote:
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12-15-2022, 03:05 PM | #8 |
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Why???
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12-15-2022, 03:08 PM | #9 |
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FA20 heads from our engine are ported nicely from factory, I imagine that is the angle here
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12-15-2022, 03:28 PM | #10 |
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-5 missed gif
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12-15-2022, 04:40 PM | #11 |
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12-15-2022, 06:33 PM | #12 | |
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edit: Wait, no. I'm dumb. Already have to do that. Actually, I can't think of a good reason.
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12-15-2022, 06:38 PM | #13 |
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Are they not for the FB?
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12-15-2022, 06:39 PM | #14 |
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I haven't seen an FB. But the FA20DIT heads are far less ported than ours so I can only assume ours were quite generous compared to their normal offering
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