440/5

redneckchicken · Post by **redneckchicken** » Wed Jan 18, 2006 10:41 pm

what did this engine come stock in I have an 74 jdx8 with this engine in it and am trying to get the right freakin points for it

Post by **Matt** » Wed Jan 18, 2006 10:48 pm

'74 and later 500 and 600.

JDXspec · Post by **JDXspec** » Thu Jan 19, 2006 12:16 am

The 74 JDX8 would have a 440/22 reed valve eng in it. The 74 and up 500 and 600 used the 440/5 which is piston ported

JDXspec · Post by **JDXspec** » Thu Jan 19, 2006 12:30 am

According to the SM the 440/5 should have a Denso magneto. It looks like that Denso was also used in the reed valve eng used in the JDX8 so maybe they use the same points? Hope this helps

400brian · Post by **400brian** » Thu Jan 19, 2006 3:07 am

The flywheel may be marked "ND" ( nippondenso )
Also, I believe the Denso flywheel will have the magnets embedded in the ring.
The Kokusan flywheel looks like the magnets are stuck on inside the rim.
I'm attaching a photo of a Denso flywheel ( inside view ).

JDFanPa · Post by **JDFanPa** » Thu Jan 19, 2006 4:13 am

funny thing my 73 x8 has the same incorrect engine installed the green motor mount is a big give away lol