Blaster swaping 701cc to 760cc
- Thread starter alan
- Start date
junkyardj
┌∩┐(◣_◢)┌∩┐
- Location
- barrie ont. canada
dont think you'll have any problems with your current electrics but remember that just because its more cc's doen not mean it'll hit harder
the port timing sucks on oem 760's imo unless you do alot of work
the port timing sucks on oem 760's imo unless you do alot of work
Polish jet pilot
4aces4aces4aces4aces4aces
- Location
- Warsaw, Poland
you have 2 options:
Bore oem cylinder to 760cc (84mm bore)
Get a 62T or 64X cylinder and adjust it to your needs (+ you have overbores left)
Bore oem cylinder to 760cc (84mm bore)
Get a 62T or 64X cylinder and adjust it to your needs (+ you have overbores left)
OCD Solutions
Original, Clean and Dependable Solutions
- Location
- Rentz, GA
Done right the ported 760's can deliver some great power, the problem is, most aren't done right or not matched up to the right components so there's lots of bad press on them. I have a 62T 760 cylinder race ported by TLR ( Todd Lachance Racing) and I love the power from it. It is more torquey than revvy and has a long smooth powerband that just keeps pulling right off idle all the way to the top. Great power for surf riding as it always seems to be in the power at any rev and is smooth and predictable. Tons of power, just not on/off like the 61x can be.
I run an X-scream SS865 in the surf now and have no problem dropping back onto the 760 for a day. The power curve on the 760 is similar in how linear it is, just not as powerful.
That being said, if you do mostly flatwater and want that tear your arms out of the sockets power then you may want to start with the 61x based setup. They can produce violent hp for less money usually and are the most common configuration, therefore the most parts are available and at better prices.
Your electrics will swap right over with no problems as long as you swap all the components including stator, flywheel and ebox.
I run an X-scream SS865 in the surf now and have no problem dropping back onto the 760 for a day. The power curve on the 760 is similar in how linear it is, just not as powerful.
That being said, if you do mostly flatwater and want that tear your arms out of the sockets power then you may want to start with the 61x based setup. They can produce violent hp for less money usually and are the most common configuration, therefore the most parts are available and at better prices.
Your electrics will swap right over with no problems as long as you swap all the components including stator, flywheel and ebox.
LBE
Eddie Would Go.
- Location
- Charlotte, NC
I think a 760 conversion works better in the B1 than in a SJ. The higher port timing works better with a heavier boat that planes quickly. This is all personal opinion though. Just a pipe will wake up a stock motor quite a bit.
RoTAxGreNade
X-
- Location
- Port St. Loozer
Lot of us cheap surf sluts down here run what we call the Puerto Rican big bore package in the surf.
760 62T cylinder
reeds
enhancer
advance the timing a few degrees
200 compression
lots of oil
and yes this is doable on pump gas wit PROPER jetting, verifying squish and common sense throttle duration - which in the surf really isn't an issue.
Like OCD said , it's all about matching the pieces... Proper impeller and nozzle bore helps unload the motor a bit to get past that port timing issue.
The T castings are much beefier so you can get away without a girdled head and don't have to bore your cases.
Remember the exhaust bolts are 10mm so you have to use inserts to drop to 8mm.
Ghetto = heli- coils
Properly = Keenserts
Is it the correct way to set up a motor - Hell NO ( hence our naming of it) and we can probably see Chucky shaking his head right about now - LoL
But its an alternative for a motor that probably will not live long anyways due to repeated saltwater douching -even though some of us have way more hours on ours than we deserve!
760 62T cylinder
reeds
enhancer
advance the timing a few degrees
200 compression
lots of oil
and yes this is doable on pump gas wit PROPER jetting, verifying squish and common sense throttle duration - which in the surf really isn't an issue.
Like OCD said , it's all about matching the pieces... Proper impeller and nozzle bore helps unload the motor a bit to get past that port timing issue.
The T castings are much beefier so you can get away without a girdled head and don't have to bore your cases.
Remember the exhaust bolts are 10mm so you have to use inserts to drop to 8mm.
Ghetto = heli- coils
Properly = Keenserts
Is it the correct way to set up a motor - Hell NO ( hence our naming of it) and we can probably see Chucky shaking his head right about now - LoL
But its an alternative for a motor that probably will not live long anyways due to repeated saltwater douching -even though some of us have way more hours on ours than we deserve!
D-Roc
I forgot!
- Location
- Dirty River Rider
slap a TL ignition on it and you can get the bottom end hit your looking for.
RoTAxGreNade
X-
- Location
- Port St. Loozer
Now there's a thought!!!
D-Roc
I forgot!
- Location
- Dirty River Rider
thats what i was thinking about your setup, it is exactly the way i would do it but with a TL for the bottom end power. Probably give great throttle responce and pull longer than the 61x 753cc. I ran a 735cc and it hit very hard but only for a few seconds and then its over. I would have loved to try the 760 62t cylinder in my setup. (for flatwater)