Installed the stroker crank last weekend and I have been chasing my tail all week. I can't seem to get any more performance than before the crank. The low end was better and so was the mid, but I lost some on top.
It acted like a jetting issue and IP2 gave me a dozen things to look for.
After talking with Josh (IP2) about a million times he sent me in the right direction.
He said to work backwards, taking all my mods out of the picture. No matter what I did, it never got better. Well, I went so far backwards I ended up with the motor on the bench last night.
I started tearing it down tonight and got as far as the flywheel and found the problem. Behind the flywheel is totally soaked with gas/oil. The crank seal is wasted. This pretty much explains why I have been having problems.
Just be sure to check your seals, or even better, just replace them while it's tore down. It will be well worth the few minutes to replace them, then to go through what I did this week.marcelo
Have you fired it back up since you replaced the seal?
WFO Racing said:
Installed the stroker crank last weekend and I have been chasing my tail all week. I can't seem to get any more performance than before the crank. The low end was better and so was the mid, but I lost some on top.
It acted like a jetting issue and IP2 gave me a dozen things to look for.
After talking with Josh (IP2) about a million times he sent me in the right direction.
He said to work backwards, taking all my mods out of the picture. No matter what I did, it never got better. Well, I went so far backwards I ended up with the motor on the bench last night.
I started tearing it down tonight and got as far as the flywheel and found the problem. Behind the flywheel is totally soaked with gas/oil. The crank seal is wasted. This pretty much explains why I have been having problems.
Just be sure to check your seals, or even better, just replace them while it's tore down. It will be well worth the few minutes to replace them, then to go through what I did this week.marcelo
Gotta find one tomorrow. I have a place down the street called Michigan Ball Bearing that carries about every bearing and seal imaginable. They should have one.
If you would have looked at my thread, when I explained my install, I stated that the key was hitting and binding my seal. I gound mine down. good luck.
If you would have looked at my thread, when I explained my install, I stated that the key was hitting and binding my seal. I gound mine down. good luck.
The key was removed prior to installing the crank. That's not was caused it to leak. The other seal is leaking as well. I have a feeling the seals were on the way out and with the increased crank case pressure from the stroker made the leaks noticeable.
The key was removed prior to installing the crank. That's not was caused it to leak. The other seal is leaking as well. I have a feeling the seals were on the way out and with the increased crank case pressure from the stroker made the leaks noticeable.
I'm trying to visualize the seals guys. Are they a gasket in between the two halves of the case? Maybe point me to one of the pics in the HOW TO thread on the crank. Thanks in advance.
Gotta find one tomorrow. I have a place down the street called Michigan Ball Bearing that carries about every bearing and seal imaginable. They should have one.
I'm trying to visualize the seals guys. Are they a gasket in between the two halves of the case? Maybe point me to one of the pics in the HOW TO thread on the crank. Thanks in advance.
Got the new seals today and it's back togeather. Did a compression check and it's up from 180lbs to 190lbs with the new seals. I'll be running it tomorrow and see what this thing will really do!
by saying you have 190 lbs of compression, you mean you hooked up a compression check gage to your spark plug hole and yanked on it till it stopped going up?
if so thats a hell of alot of compression! i think mine was only 90 stock.
You got race fuel in that?
by saying you have 190 lbs of compression, you mean you hooked up a compression check gage to your spark plug hole and yanked on it till it stopped going up?
if so thats a hell of alot of compression! i think mine was only 90 stock.
You got race fuel in that?
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Related Threads
?
?
?
?
?
Pocketbike Forum
608.9K posts
71.7K members
Since 2004
A forum community dedicated to Pocketbike owners and enthusiasts. Come join the discussion about performance, modifications, wiring, classifieds, troubleshooting, maintenance, reviews, and more!