Joined
·
219 Posts
And we're back!
So i had a bit of a panic about the oil passage to the head Today but I squished my worry as well.
The TTR oil runs up the front right cylinder stud hole then into the cam and out to the rest of the head originally. (right being as if your sitting on the bike)
On the Zuma the oil runs from the right Rear stud hole up and into the cam.
So when i pulled the cam out of the two heads i realized the TTR and the zuma had their oil passage for the cam opposite to each other.
TTR Head on left Zuma on the right.
![Wheel Auto part Rim Automotive wheel system Tire]()
![Wheel Auto part Tire Automotive tire Automotive wheel system]()
so at first i wasn't sure how to make it pass from the front stud to the cam because the head doesn't have an room to even drill a new oil passage.
The area surrounded in red is where the oil goes from the stud hole to the cam. in the blue is where it needs to be in order to run from the TTR oil source. as you can see no room to drill.
![Auto part Tool accessory Engine Machine Metal]()
SO i took the air compressor and plugged one hole at a time to see if there was by chance a cross over between studs that i just couldn't see. And there IS!!! was so stoked!!
![Auto part Tire Wheel Rim Engine]()
The ares highlighted in red is where it passes from the front stud to the rear stud so oil passageway is good to roll!
So back to my cam sprocket issue this is where once again i had to turn to studying other pictures to find an answer. I sent an email to PMW and had no response which in the past he was very fast to respond so i'm guessing they don't want to just had over their solutions to this issue because this is one of their custom pieces. I understand and that's all there is to say about that.. I am going to ask Firepower minis for some help and see what happens. They have a sweet adjustable cam sprocket that they are running and have posted a few pictures of but they are running a different style cam chain. So i am curious what they are doing.
But in my explorations of their facebook have found the old solution to making the ttr sprocket fit. they machined a spacer so that it would fit correctly on the O.D. cam and cut down the alignment key so that it fits perfectly. they appear to have used brass. my plan is to use steel get it tig welded in place and then throw it on the lathe and smooth it all out. i may throw it on the drill press as well and throw a few holes in it to lose some weight for some more revs. I figure ill make 2 or 3 sprockets and send one off to get an adjustable made if nobody will sell me one. Here is a pic of the spacer solution.
![Bicycle part Gear Bicycle drivetrain part Auto part Derailleur gears]()
So that is where we are for now. I'm getting irritated about my piston kit. if i don't hear anything this week i'm going to cancel my order and go bigger 65mm. If i get some cash i'm going to go crazy and get the crank lightened and balanced. i really wish there was a nice billet Clutch for this thing. anyways if anyone has any ideas let me know!
So i had a bit of a panic about the oil passage to the head Today but I squished my worry as well.
The TTR oil runs up the front right cylinder stud hole then into the cam and out to the rest of the head originally. (right being as if your sitting on the bike)
On the Zuma the oil runs from the right Rear stud hole up and into the cam.
So when i pulled the cam out of the two heads i realized the TTR and the zuma had their oil passage for the cam opposite to each other.
TTR Head on left Zuma on the right.
so at first i wasn't sure how to make it pass from the front stud to the cam because the head doesn't have an room to even drill a new oil passage.
The area surrounded in red is where the oil goes from the stud hole to the cam. in the blue is where it needs to be in order to run from the TTR oil source. as you can see no room to drill.
SO i took the air compressor and plugged one hole at a time to see if there was by chance a cross over between studs that i just couldn't see. And there IS!!! was so stoked!!
The ares highlighted in red is where it passes from the front stud to the rear stud so oil passageway is good to roll!
So back to my cam sprocket issue this is where once again i had to turn to studying other pictures to find an answer. I sent an email to PMW and had no response which in the past he was very fast to respond so i'm guessing they don't want to just had over their solutions to this issue because this is one of their custom pieces. I understand and that's all there is to say about that.. I am going to ask Firepower minis for some help and see what happens. They have a sweet adjustable cam sprocket that they are running and have posted a few pictures of but they are running a different style cam chain. So i am curious what they are doing.
But in my explorations of their facebook have found the old solution to making the ttr sprocket fit. they machined a spacer so that it would fit correctly on the O.D. cam and cut down the alignment key so that it fits perfectly. they appear to have used brass. my plan is to use steel get it tig welded in place and then throw it on the lathe and smooth it all out. i may throw it on the drill press as well and throw a few holes in it to lose some weight for some more revs. I figure ill make 2 or 3 sprockets and send one off to get an adjustable made if nobody will sell me one. Here is a pic of the spacer solution.
So that is where we are for now. I'm getting irritated about my piston kit. if i don't hear anything this week i'm going to cancel my order and go bigger 65mm. If i get some cash i'm going to go crazy and get the crank lightened and balanced. i really wish there was a nice billet Clutch for this thing. anyways if anyone has any ideas let me know!
