Super Jet Big Bore Advice

F

flying high

Location
Flagler Beach
So I got a 99 RN with head and pipe. I'm thinking its time for me to upgrade and get some more power out of my 701. Anyone know anything about the GroupK 845cc "hammer" freestyle big bore kit? Anyone have any good/bad luck with dealing with them?

I know a few places that offer big bore kits anywhere from 771 and bigger but I don't know much about GroupKs products/results compared to the rest. Any advice would be appreciated!

Thanks
 
Matt_E

Matt_E

steals hub caps from cars
Site Supporter
Location
at peace
Not only is Group K overly conservative to the point of making less powerful motors than the competition, but all the reviews /opinions I've seen and heard of the 845 kit have not been favorable
 
jetkid

jetkid

Paul Lambers
Location
Grand Rapids MI
chriselmore can you tell me why dont bother with groupk? To high in price? not good quality? pain in the ass to deal with? The others are just better at building motors? Thanks I am just curious about this kit too, it looks ok online for the price.
 
chriselmore_1

chriselmore_1

high on resin
Location
san jose ca
exactly what matt said. Waaaaaay to conservative and expensive.ive rode a jetworks bigbore 760 and a groupk bigbore 845 and the jetworks killed it!!!! The 845 made some more rpms but us freeride/fresttle guys never see or need.the jetworks was ridiculous. Art is the man 617 cylinders
 
Matt_E

Matt_E

steals hub caps from cars
Site Supporter
Location
at peace
I will say that Harry (Group K) is very well spoken, very polite, and a pleasure to deal with. His prices are decent, and his work is of good quality. But there are much better performing motors out there for the same (or less) money
 
waterfreak

waterfreak

I had a vision!
Site Supporter
Vendor Account
Location
s florida
you may be better off just holding out for a dasa or other billet big bore cylinder kit instead

their is a dasa big bore for sale on here I beleive
 
hornedogg79

hornedogg79

dodgin' bass boats
Check out the Jetmaniac/Blue ported big bore. You would be hard pressed to get more bang for your buck. I called about having my 701 bored, ported... and ended up buying a whole new motor for what I was expecting too pay for a top end elsewhere. Mine is the 718... I think new one available is 771?? At least give him a call. If it turns out his motor isn't what you're looking for, I guarantee he will point you in the right direction.
 
Lucaumpits

Lucaumpits

RIDE LIKE U'VE STOLE IT!!
Location
Orlando, FL
Jetmaniac/Blue should be at that list, his BB is insane, people rode at Daytona, and they didnt believe was only a 760cc with cheap @ss stock 38 carbs, send him a PM I know he has 2 ready for shipping> and I bet his BB will be cheaper that any of thoses above.

check it out

http://www.x-h2o.com/threads/77233-Jetmaniac-62t-61x-Freestyle-Ported-Motor-1600
chriselmore_1 said:
don't bother with groupk. Jetworks, dasa, xmetal, lpw are the way to go. They all build top notch motors. Can't go wrong with either one.
Click to expand...
 
jetkid

jetkid

Paul Lambers
Location
Grand Rapids MI
I am already 99% sure I am geting the 780 from Chris, I was just looking at all my options! I loved Blues ski in Daytona and that thing Riped!!!
 
kevbo

kevbo

Location
dfw
Nobody is collecting data so nobody really knows anything. Just buy what looks cool or whatever your favorite rider uses. You wont know any better or worse.
 
R

Robby

X
Location
Indiana
I got the Group K 780cc big bore hammer kit a few years ago (before they came out with the 845cc kit). I've got to tell you, I have been pretty pleased with it. They may be more conservative than some of the others, but reliability is kind of nice, too. Also, Harry and Gerhart at Group K were really nice to work with when I was working to get it tuned.

Robby
 
You must log in or register to reply here.
Top Bottom