New BIG BORE 781 Freestyle Ported JetManiac/Blue Motor

bbblaster1

bbblaster1

Location
Marysville, WA (near Seattle)
Wow! Glad I sprung for the JM Front Cover! I was already planning to clean/prep/paint my engine bay. After seeing this beautiful Blue/JM motor, I MUST get to work getting my old ski cleaned up & painted, at least under the hood to start with... If it runs as good as it looks, I know I'll be really impressed! I keep hearing how hard the JM/Blue 781 BB motor rips!! Mid/late September I should know! THANKS Blue & Chris!!!
 
Brett Roman

Brett Roman

Location
Michigan
How much for a new 781 shipped to Michigan? Planning on doing a build this winter. Also there is a Jet Maniac BB 865 forsale on ebay right now... Whats that motor worth and can I get domes from you to run it on pump gas? Can i sneak buy running that 865 on 38mm carbs?
 
JetManiac

JetManiac

Stoked
Site Supporter
Vendor Account
Location
orlando
Brett Roman said:
How much for a new 781 shipped to Michigan? Planning on doing a build this winter. Also there is a Jet Maniac BB 865 forsale on ebay right now... Whats that motor worth and can I get domes from you to run it on pump gas? Can i sneak buy running that 865 on 38mm carbs?
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JetManiac

JetManiac

Stoked
Site Supporter
Vendor Account
Location
orlando
@buckward

BB781 build with intake/carb and electrics package

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OEM fuel line and carb bling bolts

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Intake build with Vforce 2 reeds and cages, JM allen bling bolts

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JM rebuilt OEM starter sealed to cases

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OCD ground cable with OEM boot, JM starter bling bolt kit
 
T

Tahititof

Location
French Polynesia
Hello

I would like buy one motor 781 BB
I need another parts like a starter, the rotor and the stator
I have a ADA head cylinder, and I need to know what dome can fit
And another question, what colour have you got ???

Thanks a lot





JetManiac said:
781 Big Bore Power

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These motors RIP hard! I have been running one of these in my surf freak and am stoked with their performance. Blue has been refining the sleeve and porting design on this motor for years now and it is right on the money.

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These beautiful Big Bore motors are newly built 62t/61x (same configuration as RN '96-'15) 781cc freestyle motors ported and built by Blue/JetManiac. They designed to offer the most freestyle low end power for the best big bore value.

62t cases- freestyle big bore ported and epoxied intake and front stator areas, cases bored and machined to accept our custom big bore sleeves.

61x cylinder- freestyle big bore ported, new JetManiac custom Big Bore sleeves installed and bored to 84-85.5mm, exhaust/head decked

New Pro-X top end with new pistons, rings, and wrist pin bearings
New US quality gaskets
New rebuilt/SBT crank with 1 year unconditional warranty
(have options for hotrods or new oem cranks also)
New OEM crank seals
New carb jets and springs for oem 38's included, and carb tuning specs included
Cases, cylinders, and bedplates (clearanced for bpipe) are sandblasted and then bead blasted, painted and baked on beautiful semigloss black finish

Video here:

These motor are designed to work well with affordable stock dual 38mm carb setup and jets, springs, and carb tuning specs are included.
(Of course, JM BB will also work well with larger carb setups like 46's or larger.)

ADA head with custom ADA/JetManiac domes and complete intake/carb setup package also available.

*We can also rebuild your motor into one like this or trade-in your core motor (crank, cases, cylinder) with usable parts for approx. 400.-500. credit off this motor.

Short block $2680.

(Outright purchase with no core required)


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