Best accelerating camshaft? (high rpm,high torque)
i'm going to keep it , play with it for a while all while doing some engine modifications until i can get a bigger and even better cam. the .308 looks like it has awesome performance from what i've seen.
i know you all want to see what im working with so : (its a project)
Just picture a live axle with the motor a just forward of the center, a racing seat, and the same wheel as the left-rear on the right-rear.
i'm perfecting everything, don't worry about the frame, i'm on it.Thats what i get for riding on a tac weld haha Thanks for the help guys.
(pic taken 3 weeks ago)
i know you all want to see what im working with so : (its a project)
Just picture a live axle with the motor a just forward of the center, a racing seat, and the same wheel as the left-rear on the right-rear.
i'm perfecting everything, don't worry about the frame, i'm on it.Thats what i get for riding on a tac weld haha Thanks for the help guys.
(pic taken 3 weeks ago)
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Do you know this?
OldMiniBikes forum member: NorCalPutPut claimed:
"212cc with a 14cc head 22mm mikuni header .020+ rod 26lbs springs dyno 275 cam and arc flywheel no port work no combustion chamber work for valve shrouding stock valves 600-700$" from this post : http://www.oldminibikes.com/forum/honda-clone-predator/90166-predator-engine-mods-2.html and has a video showing it in action.
i was going to put a gx160 head on the hemi block since it just bolts right on up and with that, it adds compression.
OldMiniBikes forum member: NorCalPutPut claimed:
"212cc with a 14cc head 22mm mikuni header .020+ rod 26lbs springs dyno 275 cam and arc flywheel no port work no combustion chamber work for valve shrouding stock valves 600-700$" from this post : http://www.oldminibikes.com/forum/honda-clone-predator/90166-predator-engine-mods-2.html and has a video showing it in action.
i was going to put a gx160 head on the hemi block since it just bolts right on up and with that, it adds compression.
Moba jr is a decent cam.
This is also a decent cam for the money.
https://www.OldMiniBikes.com/Super-X-Dyno-Cam.html
Older grinds...
The Momba Jr is a better torque cam.
The Dyno 265 236 work good too but looses a little bottom end ( two versions one posted works better with more carb and valves.
Here is the thing.
You can get a torque cam and you can get one that makes more power and puts some legs under you, but its very hard to get both.
For my money on a simple first build I would go with the Momba Jr because I know Tim isky made that grind to be driven rather than raced around a track at high rpm ( the Dyno and most kart grinds are better for the top end )
You really need to talk to the cam guy and ask him about his grind and what sort of engine and application you have.
Modifications that work or will not work with the cam can make a break the build.
The cam grinder knows what his profile will work with best.
This is also a decent cam for the money.
https://www.OldMiniBikes.com/Super-X-Dyno-Cam.html
Older grinds...
The Momba Jr is a better torque cam.
The Dyno 265 236 work good too but looses a little bottom end ( two versions one posted works better with more carb and valves.
Here is the thing.
You can get a torque cam and you can get one that makes more power and puts some legs under you, but its very hard to get both.
For my money on a simple first build I would go with the Momba Jr because I know Tim isky made that grind to be driven rather than raced around a track at high rpm ( the Dyno and most kart grinds are better for the top end )
You really need to talk to the cam guy and ask him about his grind and what sort of engine and application you have.
Modifications that work or will not work with the cam can make a break the build.
The cam grinder knows what his profile will work with best.
My first purchase was going to be the Black Mamba regular but i can't find it ANY where.
and on top of that the whoever is working the online chat(david anderson) customer service is very poor. One phone number is not working and the other never gets answered. So i'm stuck with what i ordered unfortunately. i'll see if i can re-sell it if i can't do anything with it.
He was supposed to contact the specialist for me and send if my order was shipped yet..never did(been 3 days).
Edit: it is best to email them but even that takes a while.
and on top of that the whoever is working the online chat(david anderson) customer service is very poor. One phone number is not working and the other never gets answered. So i'm stuck with what i ordered unfortunately. i'll see if i can re-sell it if i can't do anything with it.
He was supposed to contact the specialist for me and send if my order was shipped yet..never did(been 3 days).
Edit: it is best to email them but even that takes a while.
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You did not try very hard.
Ask for more help.
Screwing up is easy, just rush things.
Doing it right takes research.
STORE
I have the feeling you are going to screw this right up.
So I would like to suggest you build exactly this...
Others might suggest alternatives and its up to you to research a build so you do not screw it up.....
Get the Momba jr.
A +020 pred rod.
Use a non hemi head, the 18cc Honda is real good, but a milled 27.25 combo to around 18cc is also a good choice.
Get an iron billet flywheel, they are cheap and good enough for you.
Upgrade the valves springs retainers and rockers, stock push rods are fine. ( these are the only points of concern i have because they are unpredictable ).
I really like old style Champion rockers. ( find them used or buy new )
Your header Id should not be larger than .875 and I would like a pipe about 16 to 20 inches long. (longer is better for you, this is simple and cheap preserves torque and breaths well enough for a fun kart or bike )
Set you timing around 25 BTDC as a starting point ( because I know this will not be too much, and there is room for more if needed
A real Honda Ignition coil is nice.
Jetting is a crap shoot I have no suggestions
carbs can be confusing too.
I came up with the idea of running a Tillotson Intake and Tecumseh series 4 carb ( anyone can turn screws and make it work )
What I suggest will work.
Why did I tell you this?
if I come across badly no offense, this thread has been done to death and I think I have made this post more or less the same for the past 5 years
You posted no plan about what you are building.
Variations on this theme have been built by many, its reliable, predictable and easy to tune and drive. ( easy double the power to 14 when tuned right as well )
Ask for more help.
Screwing up is easy, just rush things.
Doing it right takes research.
STORE
I have the feeling you are going to screw this right up.
So I would like to suggest you build exactly this...
Others might suggest alternatives and its up to you to research a build so you do not screw it up.....
Get the Momba jr.
A +020 pred rod.
Use a non hemi head, the 18cc Honda is real good, but a milled 27.25 combo to around 18cc is also a good choice.
Get an iron billet flywheel, they are cheap and good enough for you.
Upgrade the valves springs retainers and rockers, stock push rods are fine. ( these are the only points of concern i have because they are unpredictable ).
I really like old style Champion rockers. ( find them used or buy new )
Your header Id should not be larger than .875 and I would like a pipe about 16 to 20 inches long. (longer is better for you, this is simple and cheap preserves torque and breaths well enough for a fun kart or bike )
Set you timing around 25 BTDC as a starting point ( because I know this will not be too much, and there is room for more if needed
A real Honda Ignition coil is nice.
Jetting is a crap shoot I have no suggestions
carbs can be confusing too.
I came up with the idea of running a Tillotson Intake and Tecumseh series 4 carb ( anyone can turn screws and make it work )
What I suggest will work.
Why did I tell you this?
if I come across badly no offense, this thread has been done to death and I think I have made this post more or less the same for the past 5 years
You posted no plan about what you are building.
Variations on this theme have been built by many, its reliable, predictable and easy to tune and drive. ( easy double the power to 14 when tuned right as well )
Prolly mean .275, which is still the wrong answer, especially after having the entire question.
240@.050 on a pig, geared tall, stock every thing else, will likely be slower than stock.
He was a child seeking affirmation that his decision was the right one. I could ask enough women, that one would likely say I'm handsome. It would be my mom, but still...
240@.050 on a pig, geared tall, stock every thing else, will likely be slower than stock.
He was a child seeking affirmation that his decision was the right one. I could ask enough women, that one would likely say I'm handsome. It would be my mom, but still...