Author Topic: Project "Evolution" 78' CB750K... the morphing continues... (Read 75071 times)

Restoration Fan · « **Reply #125 on:** February 03, 2016, 10:20:28 AM »

Quote from: calj737 on February 03, 2016, 09:10:00 AM

Both ways!

Careful with the beer, Wilbur. IIRC, Cal doesn't let people stop to pee when he's driving on road trips.

calj737 · « **Reply #126 on:** February 03, 2016, 03:33:48 PM »

You do have a good memory, Ron! Of course, those were Georgia boys stuffed in the back of the Van so who could blame me really?

I like Wilbur. I'd stop anytime he asked

Stev-o · « **Reply #127 on:** February 03, 2016, 04:04:48 PM »

Quote from: calj737 on February 03, 2016, 03:33:48 PM

You do have a good memory, Ron! Of course, those were Georgia boys stuffed in the back of the Van so who could blame me really? I like Wilbur. I'd stop anytime he asked

My wife pee'd in a Dillard's shopping bag in the vehicle on one road trip to NM several years ago!

It's not that I didnt stop - we were stranded on I-40 during a blizzard one night, we ended up sleeping in the 4Runner. I pissed in the middle of I-40!

calj737 · « **Reply #128 on:** February 03, 2016, 04:08:44 PM »

Quote from: Stev-o on February 03, 2016, 04:04:48 PM

My wife pee'd in a Dillard's shopping bag in the vehicle on one road trip to NM several years ago!

It's not that I didnt stop - we were stranded on I-40 during a blizzard one night, we ended up sleeping in the 4Runner. I pissed in the middle of I-40!

Stev-O, the Pissed Off thread is that way >>>>

Restoration Fan · « **Reply #129 on:** February 03, 2016, 06:18:04 PM »

Quote from: calj737 on February 03, 2016, 03:33:48 PM

You do have a good memory, Ron! Of course, those were Georgia boys stuffed in the back of the Van so who could blame me really? I like Wilbur. I'd stop anytime he asked

Well heck, if you're gonna stop and let people take a pee, how about swinging through Atlanta and picking me up? I'm game for the ride across country & back!

Desert-SOHC · « **Reply #130 on:** February 03, 2016, 06:34:22 PM »

COOL.........company! Make sure to bring some SOHC's, there are some beochin roads through wine country here!

madmtnmotors · « **Reply #131 on:** February 03, 2016, 08:00:00 PM »

You guys crack me up!

BobbyR · « **Reply #132 on:** February 03, 2016, 08:15:51 PM »

Great job. Devolution will be worth the work. She will be a runner and a stunner.

calj737 · « **Reply #133 on:** February 04, 2016, 04:05:05 AM »

Quote from: Restoration Fan on February 03, 2016, 06:18:04 PM

Well heck, if you're gonna stop and let people take a pee, how about swinging through Atlanta and picking me up? I'm game for the ride across country & back!

Guaranteed. Now we just got to get Wilbur to step up and point himself West...

BobbyR · « **Reply #134 on:** February 04, 2016, 06:49:07 AM »

Quote from: Stev-o on February 03, 2016, 04:04:48 PM

Quote from: calj737 on February 03, 2016, 03:33:48 PM
You do have a good memory, Ron! Of course, those were Georgia boys stuffed in the back of the Van so who could blame me really? I like Wilbur. I'd stop anytime he asked

My wife pee'd in a Dillard's shopping bag in the vehicle on one road trip to NM several years ago!

It's not that I didnt stop - we were stranded on I-40 during a blizzard one night, we ended up sleeping in the 4Runner. I pissed in the middle of I-40!

My personal best was 4 am on the center span of the George Washington Bridge. We were stuck for 4 hours because some dickhead drove under a truck. I dod nt have a Snapple bottle ir anything in the car. Walked in between two 18 wheelers and let her rip.

Homeland Security did not come calling, so I guess I made a clean getaway.

madmtnmotors · « **Reply #135 on:** February 11, 2016, 07:58:47 PM »

After confirming PeWe's assessment of cheap aftermarket cam chain tensioners:

http://forums.sohc4.net/index.php/topic,155043.msg1776359.html#msg1776359

I have decided to keep it and race it!

Restoration Fan · « **Reply #136 on:** February 12, 2016, 04:19:21 AM »

SCHWEET!!!

Now you get to continue to prove to everyone that "78's are the fastest!"

calj737 · « **Reply #137 on:** March 01, 2016, 04:18:33 AM »

What gives with this project, Wilbur? Don't you have a race coming up soon? Have you been spending all your time watching YouTube and snacking on chips and not turning wrenches! Dang son, Billy is up there building 3 bikes at once and you're lazing away in sunny FL...

madmtnmotors · « **Reply #138 on:** March 01, 2016, 04:30:50 AM »

Quote from: calj737 on March 01, 2016, 04:18:33 AM

What gives with this project, Wilbur? Don't you have a race coming up soon? Have you been spending all your time watching YouTube and snacking on chips and not turning wrenches! Dang son, Billy is up there building 3 bikes at once and you're lazing away in sunny FL...

I am currently awaiting the return of my freshly bored cylinders...

calj737 · « **Reply #139 on:** March 01, 2016, 04:33:57 AM »

They will be waiting on you to get home from work today.

madmtnmotors · « **Reply #140 on:** March 01, 2016, 04:41:32 AM »

In the meantime, I have managed to accomplish the following:

>Ported the head, mostly smoothing out the factory "swipe" half-a$$ factory port job on the intakes
>Added the "quench band" to the combustion chambers
>Lapped the valves
>HD valve springs with titanium spring retainers
>New HD cylinder studs
>Put the frame on a diet:
*Smaller led turn signals
*New plastic rear fender and led taillight to replace the heavy a$$ stock pieces
*Jettisoned the passenger footpegs (no one will ride with me anyway...)
*Looking at a plastic front fender as well

I should have time to get the engine back together and put down the obligatory 500 break in miles and get a few passes at the local track before Valdosta.

madmtnmotors · « **Reply #141 on:** March 01, 2016, 04:42:28 AM »

Quote from: calj737 on March 01, 2016, 04:33:57 AM

They will be waiting on you to get home from work today.

Hot damn! Now I will definitely have time to get a little practice in!

calj737 · « **Reply #142 on:** March 01, 2016, 05:13:23 AM »

Yup, no excuses this time!

madmtnmotors · « **Reply #143 on:** March 01, 2016, 03:45:30 PM »

Pistons and cylinders arrived today. Somebody thought the plain Jane cruzinimage 65mm pistons needed "dolling up":

Looks like my build schedule just got "accelerated"!

SOHC4 Cafe Racer Fan · « **Reply #144 on:** March 01, 2016, 04:04:15 PM »

Jane is all lubed up.

Stev-o · « **Reply #145 on:** March 01, 2016, 06:30:52 PM »

Quote from: madmtnmotors on March 01, 2016, 04:41:32 AM

In the meantime, I have managed to accomplish the following:

>Ported the head, mostly smoothing out the factory "swipe" half-a$$ factory port job on the intakes
>Added the "quench band" to the combustion chambers
>Lapped the valves
>HD valve springs with titanium spring retainers
>New HD cylinder studs
>Put the frame on a diet:
*Smaller led turn signals
*New plastic rear fender and led taillight to replace the heavy a$$ stock pieces
*Jettisoned the passenger footpegs (no one will ride with me anyway...)
*Looking at a plastic front fender as well

Yeah right Cal, he's been lazin' in the FL sun!

madmtnmotors · « **Reply #146 on:** March 01, 2016, 06:45:23 PM »

Left to do:

>Assemble top end of engine
>Degree the new WebCam 41 cam
>Check valve to piston clearance (for practice if nothing else)
>Install engine in frame
>Fit up drag pipes
>Lower the front and rear 1-1/2 to 2 inches
>Mount up lighter fenders front and rear (rear mock-up complete)
>Swap points/condensers for Dyna S and Dyna coils
>Get the 500 mile break in on the new rings
>Get it to the track and ride the crap out of it!

Restoration Fan · « **Reply #147 on:** March 04, 2016, 06:06:02 PM »

Go, Wilbur, go!
Just remember...78's are the fastest!

madmtnmotors · « **Reply #148 on:** March 10, 2016, 05:32:56 PM »

Fer chrissakes....

After tearing down the motor to replace substandard cam chain tensioner components, as mentioned before, I decided to up the ante with CI's 836 kit and a hotter cam.

Well... everything's going good, finally working on degreeing the cam, and I see that the end of one of the sprocket mounting ears is snapped off my brand new freaking cam!

Now I knew the hole was not right, since I had originally planned to use a stock sprocket to establish some baseline numbers, but the holes would not line up. One of the holes was off a little. No big deal, since I have a slotted sprocket that I was going to use anyway. The slotted sprocket seemed to work without issue, and the sprocket bolts went in without any drama.

Yeah right. The only bright spot is that I was able to retrieve the wayward ear piece from the bottom of the crankcase with a telescoping magnet through the cam chain tunnel. If I had to pull the top end off again I likely would have broken something else...

on purpose!

Picts of the carnage to follow...

madmtnmotors · « **Reply #149 on:** March 10, 2016, 07:28:33 PM »

The 65mm CI pistons looked happy in their new home:

The brand spanking new camshaft was not so happy however. These pictures shows the defect pretty clearly:

I had not even tightened these to final torque. I was still in the process of degreeing the cam.

Damn.

News:

Author Topic: Project "Evolution" 78' CB750K... the morphing continues... (Read 75071 times)