Anyone running a 430EX?

[Bender]

Well I talked to a local engine builder today ,about making me an aggressive trail/GNCC engine. Nothing too nasty or expensive. I was thinking about a 416, or maybe a 440. He reccomended a 430. He said it would be cheaper than a 440 because he didn't have to resleeve it. And it would make close to the same power as a 440. He said, eventhough the 416 revs a little higher than the rest, the 430 would make better power in the woods. I'm also so getting a Sparks X6 pipe, mild porting and a Web cam(not sure of the grind) and a HD clutch. Is 430 the largest bore size? Is it similar to a 426? How come all the talk seems to be about the 416 or 440 sizes? Any comments would be appreciated.

[lil400exman]

never heard of a 430ex.............................but if ya got one more power to ya!:eek:

[F-16Guy]

87mm=416, 88mm=426, 88.5mm=430? I think someone offers an 88.5mm piston, but I'm not sure who.

[TRX_Thumper]

id say he is gonna build you a 426 and he's just callin it a 430 ...personally i would never go past a 416 cause then that sleeve is gettin pretty thin...all i have in mine is a 416 piston stock cam and exhaust...i have a uni filter and im runnin a 165 main jet 40 pilot it feels great in the woods...next thing im goin to do is a TC gncc cam

I"d think it's a 426 also....:macho

[iride440ex]

This is from ross pistons website 88.6=430

Honda



XR400 1996 - 1998 Off Road

Stock Bore 85mm (3.346)

Price and part number includes 1 piston, 1 pin, 1 ring and lox

Racer Net Price $125.00

CC
BORE
OVERBORE
COMPRESSION RATIO
KIT PART #
GRAM WEIGHT

397 85mm (3.346)
Standard
10.5-1
99705
274

406 86mm (3.386)
+1mm
10.6-1
99706
275

415 87mm (3.425)
+2mm
10.8-1
99707
275

424 88mm (3.465)
+3mm
11.1-1
99708
288

440 89mm (3.508)
+4mm
11.2-1
99709
302

430
88.6mm (3.488)

11.1-1
99774
300

440
88.97mm (3.503)

11.2-1
99772








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