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Does anybody have specs for 4g61T and the 4g63T
http://4g61t.org/forum/viewtopic.php?f=6&t=8630
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Author:  coltgtman [ Sat Apr 24, 2004 9:43 pm ]
Post subject:  Does anybody have specs for 4g61T and the 4g63T

I just want to know the differences in them.

Bore x stroke etc etc

Author:  mrcyborg [ Sun Apr 25, 2004 7:48 pm ]
Post subject: 

sorry i dotn have an exact number for you but the stroke is about 10mm les and the bore is about 3mm from memory.

Author:  coltgtman [ Sun Apr 25, 2004 7:54 pm ]
Post subject:  I was told

I was told that they are the same but for bore size is that true?

That the rods and crank and all that stuff is the same.

Author:  Berserko [ Sun Apr 25, 2004 8:07 pm ]
Post subject: 

The rods are the same the crank is different...

Author:  mrcyborg [ Sun Apr 25, 2004 8:18 pm ]
Post subject: 

no they definatly have a shorter stroke. im sure is 10mm but might be a little either side. they have a different crank but they may have the same rod im not sure, they can do that using a different crank and different pistons im told. the stroke is the reason that the 1600 revs so hard.

Author:  mysteryman [ Sun Apr 25, 2004 10:00 pm ]
Post subject: 

http://www.4g61t.com/forum/viewtopic.php?t=99&por=1%22

Liink to 4G61T specifications

4G61T 81MM bore 75.5MM stroke
4G63T 85MM bore 88MM stroke

1.6DOHC revs fast for three reasons:
1)short stroke
2)small size bore
3)no balance shafts

Yes the two motors share the same connecting rod.

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