My bottom end SUCKS

[motoman159]

i noticed mainly yesterday my bottom end power is little to none... anybody now how to fixx this?? mods in my sig its really on my 3,4,5,6 gears

 

[sicivicdude]

i noticed mainly yesterday my bottom end power is little to none... anybody now how to fixx this?? mods in my sig its really on my 3,4,5,6 gears

How much did you raise the exhaust port during this "home port" job?

Is the head rechambered? That increases the compression ratio AND centers the fire better.

A stroker crank would also kick that bottom end up a notch

 

[motoman159]

We raised it halfway to the black line, as in not touching it, and what's head rechambering?

 

[mjgnslngr]

We raised it halfway to the black line, as in not touching it, and what's head rechambering?

http://www.blasterforum.com/engine-13/head-work-48086/

BAM!!!..........

 

[blasterdemon7]

You did rejet your carb for the porting?

 

[motoman159]

http://www.blasterforum.com/engine-13/head-work-48086/

BAM!!!..........

Oh snap! Would that help?

 

[motoman159]

You did rejet your carb for the porting?

Didn't take a lot off at all just cleaned it up

 

[mjgnslngr]

Oh snap! Would that help?

read... grasshopper...lmfao!!!!!!
it will give you an idea about where to go and what works. Best knows his sh*t. and im surprised with your fmf it doesn't pull harder lower. maybe you need to step up to a good mid range pipe? do you run a reed spacer?

 

[blasterdemon7]

Did you do it the same as the O'Conner vids? That would make enuf of an improvement to need a jet change.

 

[motoman159]

read... grasshopper...lmfao!!!!!!
it will give you an idea about where to go and what works. Best knows his sh*t. and im surprised with your fmf it doesn't pull harder lower. maybe you need to step up to a good mid range pipe? do you run a reed spacer?

No spacer,

I'll take some vids later!

 

[motoman159]

Did you do it the same as the O'Conner vids? That would make enuf of an improvement to need a jet change.

I didnt have the Long bit to get the backs, so I just mainly made it smooth

 

[mjgnslngr]

reed spacers are not really for giving power but ive heard they can Move it! slightly change where the powerband comes alive up or down depending on placement. dont know if its true but a lot of guys here and elsewhere say it does...might be worth a shot?

 

[Scrappy]

I watched a couple of his videos and it doesnt look like it starts to pull hard til it gets on the pipe and by the time it gets on the pipe he has to shift. possibly need to tune on the carb.

 

[motoman159]

I watched a couple of his videos and it doesnt look like it starts to pull hard til it gets on the pipe and by the time it gets on the pipe he has to shift. possibly need to tune on the carb.

Yes! Power bands to late! Exactly!

 

[mjgnslngr]

whats your gearing like?

 

[motoman159]

whats your gearing like?

stoc13/40
151515151

 

[Scrappy]

Have you done plug chops yet to check jetting?

 

[motoman159]

Have you done plug chops yet to check jetting?

sadly ,, no
15151515

 

[mjgnslngr]

Why Not? i get it, it was more important to Ride it right?

 

[motoman159]

Why Not? i get it, it was more important to Ride it right?

grasshopper needs to.. but is 2 lazy to buy a plug.. and to stupid