426ex build

[400exman420]

what would i need to build a reliable fast 426 i do have some cash to spend so im open to everything

[440rdr1]

Originally posted by 400exman420
what would i need to build a reliable fast 426 i do have some cash to spend so im open to everything

450r carb, stage 2 hotcam, 08 CRF450r timing chain, port/polish, GT Thunder HD head studs, full exhaust with match ported header pipe, uni-filter, kibble white valves & springs, Tusk HD clutch w/hd springs.

i have this setup in my 416 and it ripppss :chinese:

[dxcody]

Minus the kibblewhite valves, i agree with 440.

450R carb
Gt Thunder HD headstuds
11:1 wiseco piston

Mild port and polish (not needed but helps a little)

I would get stock valves, kibblewhites are overpriced and have had a few different cases of breaking. (i am against kibble whites since i had 2 snap on me.)

But thats your call.

Slip on, or full exhaust. Your call.
Airfilter
You can grind down the header welds on a stock header and it helps a little also.

Cometic MLS (multi layered steel) gasket kit.

Crf450R timing chain (its the same size just heavy duty compared to the junk stock 400ex timing chain)

Stage 2 hotcam

a 426 is very reliable just make sure jet it accordingly.

and if your worried about heat, a larger oil cooler, and spal fan cant hurt.

Just kinda insurance.

[440rdr1]

Originally posted by dxcody
Minus the kibblewhite valves, i agree with 440.

450R carb
Gt Thunder HD headstuds
11:1 wiseco piston

Mild port and polish (not needed but helps a little)

I would get stock valves, kibblewhites are overpriced and have had a few different cases of breaking. (i am against kibble whites since i had 2 snap on me.)

But thats your call.

Slip on, or full exhaust. Your call.
Airfilter
You can grind down the header welds on a stock header and it helps a little also.

Cometic MLS (multi layered steel) gasket kit.

Crf450R timing chain (its the same size just heavy duty compared to the junk stock 400ex timing chain)

Stage 2 hotcam

a 426 is very reliable just make sure jet it accordingly.

and if your worried about heat, a larger oil cooler, and spal fan cant hurt.

Just kinda insurance.

I forgot to mention the CFM oversized oil tank, good call

[TheAwesomehonda]

Originally posted by 440rdr1
I forgot to mention the CFM oversized oil tank, good call 2x i like the CFM oil tank b/c they will replace/repair the tank if it ever leaks or cracks for any reason... It least thats what they say..