The Real Facts

Coyote · Post by **Coyote** » Fri Nov 14, 2008 9:06 am

Recently TLRam1 posted a question about needing to re jet if boring .5 over on his GT380. The 380 comes stock at 371cc's. Boring .5 over only changes the displacement to 378cc's. Not even to a 'real' 380.
Here's a link to a very handy online calculator that figured this out for me.

http://www.nightrider.com/biketech/calc ... cement.htm

advant63 · Post by **advant63** » Fri Nov 14, 2008 3:21 pm

where's the truth in advertising. of all my bikes only one was ever over it's engine size. my ninja 900. actually 908

GT Tim · Post by **GT Tim** » Fri Nov 14, 2008 3:50 pm

Think that is bad...a T350 is only a 315cc...

Triplerocky · Post by **Triplerocky** » Fri Nov 14, 2008 4:05 pm

italian market GT380 was 384 cc. due to import restrictionS..... GT380B of mine was overbored to 56,4 mm (Asso pistons), ence 401 cc.

She is running VERY well on #82,5 main jet, remains are the same.
Oh.... I mean VERY VERY well

TLRam1 · Post by **TLRam1** » Fri Nov 14, 2008 4:35 pm

Pretty cool Chris!