Maintenance & Technical > KX500 Aluminum Frame Conversion (AFC)
1992 KX 500 to KX 250 F 2011 Conversion
German-need-help:
--- Quote from: jBernard on November 08, 2013, 10:40:43 AM ---looking great so far!
Are you going to make a engine jig to put in place when the frame is being heat treated? i thought about making one so the mounting points wouldnt alter any during the treatment process.
--- End quote ---
I don't think this will be necessary?
81cr450:
--- Quote --- ready for 2 days of heat treating...
--- End quote ---
That is the most overlooked part of these AF builds. Could you share any details on the process; temps, time, etc...
Sweet looking build
ylwgtr:
That's because it's simply not necessary ....I know for a fact that the factory do not do this.I have done about 20 Hondas and haven't had a failure as yet
jBernard:
i'd be surprised if the factory didnt HT after all the welding they do. when you start looking at the technical numbers of aluminum strength loss in the HAZ of the weld then its pretty obvious.
I think i'm going to do a engine jig on mine just to be safe. even if it only moves slightly that will cause me to have to bore the engine mount holes out bigger and then it will be sloppy. not worth it.
i was thinking on just making basic steel bar with tapped holes on either side the width of the engine in each mount area. then bracing them all together with some .250" steel bar.
ylwgtr:
I met a guy when i was living in japan that worked in honda and he told me they didnt heat treat them...this was early 2000's...if its now changed i dont know
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