Topic: 1977 cb750f2 (915cc)

[tweakin]

Immortal.  thanks for checking out my thread.

Godffey.  Means a lot to me to have your seal of approval man, you have built some amazing bikes.

messeduptriple.   Thanks, this forum and its members have made this build possible.  Some great members here with years of experience and advice.

Wow...I only wish I knew how to tear apart an engine and do a build like that. Great work and awesome bike!!!

Sent from my PC36100 using Tapatalk

[tweakin]

Today was a great spring day in the PNW, 60 degrees and no rain in sight.  I was able to break away from the family and get 50 "break in" miles on the 915 build and even got the Harley out for a bit.  I was concerned after having to split the cases to fix the shifting issue but no leaks at all and it ran like a beast.  The absorbant pad under the bike is an old one from the last oil change.





The 915 is a rocket compared to my Harley with  built engine and a hell of a lot more fun... , but the Harley is great around town.

I am looking forward to getting the 78 c750f built up with the 836 so I can compare it to the 915.

[FunJimmy]

Big grins for you. 

Glad you had a free day to rip.

[andy750]

Sounds like you had a great day! The 915 just looks so tall compared to the Harley and looks like it wants to go fast. Definitely a "hooligan bike"

Have fun with it! Amazing build.

cheers
Andy

[tweakin]

Yes Andy the 915 is way taller than the Harley and a total different ride.  I guess thats what makes it fun to still have in the shop.  The difficult thing is remembering when I am on the Harley, it cant lean...  And when on the cb, that it can lean.

Sounds like you had a great day! The 915 just looks so tall compared to the Harley and looks like it wants to go fast. Definitely a "hooligan bike"

Have fun with it! Amazing build.

cheers
Andy

[Greggo]

That Harley is sweet!  Not a fan of how most of them get customized, but that one looks great.  What model is that?

[tweakin]

That Harley is sweet!  Not a fan of how most of them get customized, but that one looks great.  What model is that?

Thanks Greggo.   It is a 2009 Streetbob.

[MasterChief750]

crazy i guess right, thought it looked like a dyna streetbob, not a fan of many harleys but my buddy has the street bob, really like what you did with yours

[robertcoupe01]

I registered at this forum because of your build.
your bike is 1 of the cleanest 750's I have ever seen.
I am most impressed by your rearsets and rear brake upgrade,

I am hoping you could put me in contact with the guy who helped you with the brackets and linkage for your rearsets, and if you still remember the part numbers for the brake upgrades.

[tweakin]

Thanks for taking the time to check out my build and for joining one o the best forums on the net.

I replied to your message with some info on the rearsets.

I registered at this forum because of your build.
your bike is 1 of the cleanest 750's I have ever seen.
I am most impressed by your rearsets and rear brake upgrade,

I am hoping you could put me in contact with the guy who helped you with the brackets and linkage for your rearsets, and if you still remember the part numbers for the brake upgrades.

[scroggins5000]

Thanks for taking the time to check out my build and for joining one o the best forums on the net.

I replied to your message with some info on the rearsets.

Tweakin, can you forward me that info too. I'm weighing my options on what to do with the rearsets on my bike. I didn't plan well, so I'm back to square one. What you did on your bike is definitely one of the best looking, and one of the only direct bolt on set ups I've even seen for a 77-78F.

[tweakin]

Scroggins, pm sent. 

[Godffery]

I can hook you guys up with Brake up-grades:
http://www.vinmoto.org/gallery/v/VinMoto-Garage/album03/Godfferys-Garage-123/album185/

[robertcoupe01]

is it me, or does the shaft for the rear master cylinder look like its being stressed?
is the picture not showing it right?

because I'm wondering if there is any binding from the housing being solid mounted, and the brake pedal having a small circular movement when driving the ram into the master cylinder.

[tweakin]

Robert there is a bit of an angle from the mounting position, but I can assure you no binding.  The rod is free floating, can be pulled directly out, that is why the spring is next to it to add tension to keep the rod from coming free.  The rod is not connected to but rather just acts to push on the master cylinders plunger...   There is a significant amount of angle to play with.

is it me, or does the shaft for the rear master cylinder look like its being stressed?
is the picture not showing it right?

because I'm wondering if there is any binding from the housing being solid mounted, and the brake pedal having a small circular movement when driving the ram into the master cylinder.

[tweakin]

On another note, today I got the timing adjusted, valve lash checked/set and ready for the dyno this Saturday.   

[kap384@telus.net]

Never get tired of looking at your bike tweakin!

[andy750]

Never get tired of looking at your bike tweakin!

+1. Good luck with the dyno!!

[MCRider]

Never get tired of looking at your bike tweakin!

+1. Good luck with the dyno!!

That's for sure, on both accounts.

[tweakin]

Thanks gentlemen.  I hope to have a good report and video after the weekend...

[FunJimmy]

On another note, today I got the timing adjusted, valve lash checked/set and ready for the dyno this Saturday.   

Looking forward to your comments re: dyno tuning as I'll be next.

FJ

[tweakin]

1977 cb750f
915cc
APE crank
Stage three head with 5mm conversion
Dyna 2000 @32* advance
RS34 carbs, 127.5 mains

Thanks to Doctor D and Tower at Twineline...  Still need to work out a sticky accelerator pump, but other than that its great.
I am sure there is more power hiding in there but I am happy with the K&N filters and Yamiya pipe.  Rips on the steet

cb750f, 915cc Dyno run at Twineline Seattle







After the dyno tune, had a great day riding with brandEn...

[Retro Rocket]

Sounds gorgeous.... Not bad numbers either mate, i've recently been told that you need someone who really knows the Mikuni's to set them up right but once right, they are the shizzle..... I wonder if Mike Rieck has some input on that..?

[Jerry Rxman Griffin aka MuthaF'er]

Nice!

[cheapride]

Great job.  Your bike helped me with mine in so many ways.  Just Awesome...