Frankenstein Motor Project
- Thread starter Matt_E
- Start date
romack991
homebrewed
- Location
- Warsaw, IN
yeah, i thought about doing the back to back but its hard on the seals/gaskets.
WaveDemon
Not Dead - Notable Member
- Location
- Hell, Florida
glad to read your good review of the frankenstien and that I didn't just "think" my motor hit well.
It hits awesome! I can't wait to ride it when it's actually tuned.
I ran it Sat and thought it was a bit too rich. So, I dropped the pilot from 115 to 112.5. Sunday it ran okay, but had a hesitation on the bottom. I thought the popoff pressure was too high.
But when I started digging for carb parts today I ran across the sticker that came with the carb. Turns out that wasn't a 115 pilot, but a 150!!! pilot.
I am extremely impressed by how well that carb ran on either side of the spectrum. Damn, 150 to 112.5 and both were very rideable.
I ran it Sat and thought it was a bit too rich. So, I dropped the pilot from 115 to 112.5. Sunday it ran okay, but had a hesitation on the bottom. I thought the popoff pressure was too high.
But when I started digging for carb parts today I ran across the sticker that came with the carb. Turns out that wasn't a 115 pilot, but a 150!!! pilot.
I am extremely impressed by how well that carb ran on either side of the spectrum. Damn, 150 to 112.5 and both were very rideable.
:fingersx:
All in the name of brapology.
Trust me, you don't want those X cases. They're junk.
On top of being junk, they came from a certain "gentleman" - and I do use that term loosely - with a certain yellow roundnose.
If it runs good it's right.:smile:
It's pointless to compare jetting numbers on different carbs. It's all about air speed and pressure differential through the carb.
:biggthumpup:
Mouthfulloflake
ISJWTA member #2
- Location
- NW Arkansas
Matt_E,
what was the bore of the cylinder?
it was a 760 + right?
what was the bore of the cylinder?
it was a 760 + right?
tom21
havin fun
- Location
- clearwater FL
so did you manage to tune out the hesitation? Just about to do the same thing and want to know if there is anything to do different now that it is all said and done? thanks.
Phill
v Check out Little Matt_E
- Location
- Kennewick, WA
I think he got it worked out...not sure what he did though.....he is out of town this weekend and wont be back to a computer till monday....
Yes - got rid of the hesitation.
I had the carb tuned to 117.5 pilot, 132.5 main, 20ish popoff.
Ran awesome.
Honestly, the T cyl does hit noticably later than an X cyl. However, running (relatively) high compression and a lightened flywheel compensates for that a bit.
Hits very nice. Solid motor, I am happy with it.
I sold the Riva carb and am going to put a 48 Full Spec on it.
WaveDemon
Not Dead - Notable Member
- Location
- Hell, Florida
write that down tom.
what carb was that on? I just finished porting the case on my frankenstein and want to compair to the carb that I had running on there before.
- Location
- northern ireland
nice read! 5 years on! lol
- Location
- Kansas City
In the middle of this build now...
Got my x cases BB clearanced, mostly high flowed.
Cyl clean up next. Then off to machine shop for 85mm bore
Cant decide whose pistons I want to use yet.. wsm, pro-x, SBT..
I'll be using a pro-tec black pipe, head, Wet jet wpp reed stuffer intake, and 46 carb from my 701.
Thinkin about an Epic cdi to season to ign curve a bit as well.
Spinning an 08 SJ prop now I like it
Got my x cases BB clearanced, mostly high flowed.
Cyl clean up next. Then off to machine shop for 85mm bore
Cant decide whose pistons I want to use yet.. wsm, pro-x, SBT..
I'll be using a pro-tec black pipe, head, Wet jet wpp reed stuffer intake, and 46 carb from my 701.
Thinkin about an Epic cdi to season to ign curve a bit as well.
Spinning an 08 SJ prop now I like it
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