wow new motor amaving power/torq

4 replies to this topic
  • rider_hunter

Posted April 04, 2008 - 04:10 AM


so here is my new 426motor and wow I got to thinking of how I wanted to build my next engine I wanted to do something a little different so I started by buying a yfz450 hotrodsstrokercrank and ordered some new hotcams because the 450's have a different pitch of gear on the cam I also ordered all kibble white valves so I started to build my engine I was a little tricky machining the new taper on the crank for my 426 flywheel but I got it done great I stuck the crank in and asembled the bottom end and went to the cylinder it was great and I but a new standerd bore wiseco piston in I like the wisecos because they are much lighter than je next I went to my head and installed 1mm larger exhaust valves and ported and polished them in and then I put the two outer intakevalves in standerd size but the center I put in a +1mm and ported and polished now don't even try telling my the ports need to be matched on a bench that is mainly for multiple cylinder engines
and next I put in the hot cams and went riding and wow this thing has so much torq I can't beleve it myself I can almost idle in 5th gear and crack the throtle back and pull a wheelie this engine is a 472.5

my old engine had the same crank dynateck ingition 97mm je piston web/hotcam ported and polished and it wont even tuch it was like around a 500

  • dirtysouth

Posted April 04, 2008 - 04:33 AM


Except for the grammar...that sounds extremely radical. 5th gear wheelies are awesome dude. Hope the trans holds up.

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  • SXP

Posted April 04, 2008 - 05:32 AM


Except for the grammar...

Times 2. That was extremely difficult to make sense of.

  • GCannon

Posted April 04, 2008 - 07:38 AM


Pictures? I would love to see some pictures of the Head and Crank.

  • rider_hunter

Posted April 05, 2008 - 08:26 AM


Pictures? I would love to see some pictures of the Head and Crank.

sorrey I'm not taking it apart for pictures the crank looks like a 450 crank with a 426 flywheel taper and clearence ground for the piston


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