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Author Topic: 72 cb750 Project,GSXR front end- Version 2.0 coming  (Read 53891 times)

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Offline Tews19

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Re: 72 cb750 engine rebuild/project/ gsxr front end
« Reply #50 on: September 22, 2013, 09:04:59 PM »
The guy from DTT site?
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1969 Honda CB750... Basket case
1970 Honda CB750 survivor.

Offline jojo

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Re: 72 cb750 engine rebuild/project/ gsxr front end
« Reply #51 on: September 23, 2013, 07:11:56 AM »
yessir it is.
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Offline jojo

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Re: 72 cb750 engine rebuild/project/ gsxr front end
« Reply #52 on: September 23, 2013, 09:08:44 PM »
picked up my parts from the machine shop today. Couple of questions though...


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What is that copper looking thing underneath the valve holder. I dont recall seeing them or taking it out when i was tearing it down. anyone have any idea what they are/could be?

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Is it ok for these look like this?

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Offline 750cafe

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Re: 72 cb750 engine rebuild/project/ gsxr front end
« Reply #53 on: September 23, 2013, 09:20:17 PM »
Quote from: jojo on September 23, 2013, 09:08:44 PM
picked up my parts from the machine shop today. Couple of questions though...

What is that copper looking thing underneath the valve holder. I dont recall seeing them or taking it out when i was tearing it down. anyone have any idea what they are/could be?

Uploaded with ImageShack.com


Valve spring shims to match all springs.
(Pressure/installed height)

Eric
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Is there anything more fun than riding? They are between your legs and are quiet when you turn them off.

Offline jojo

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Re: 72 cb750 engine rebuild/project/ gsxr front end
« Reply #54 on: September 23, 2013, 09:52:33 PM »
Quote from: 750cafe on September 23, 2013, 09:20:17 PM
Quote from: jojo on September 23, 2013, 09:08:44 PM
picked up my parts from the machine shop today. Couple of questions though...

What is that copper looking thing underneath the valve holder. I dont recall seeing them or taking it out when i was tearing it down. anyone have any idea what they are/could be?

Uploaded with ImageShack.com


Valve spring shims to match all springs.
(Pressure/installed height)

Eric

Thank you sir. I assume this wont affect the performance of the valves/springs?
« Last Edit: September 24, 2013, 08:05:49 AM by jojo »
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Offline spazz1984

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Re: 72 cb750 engine rebuild/project/ gsxr front end
« Reply #55 on: September 23, 2013, 10:41:54 PM »
Great job on your project man I've done this front end swap but I also swap the rear end too with a little twist   

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Offline jojo

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Re: 72 cb750 engine rebuild/project/ gsxr front end
« Reply #56 on: September 24, 2013, 08:06:32 AM »
Quote from: spazz1984 on September 23, 2013, 10:41:54 PM
Great job on your project man I've done this front end swap but I also swap the rear end too with a little twist   

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Thanks a lot, im learning as i go so ive been reading a lot trying not to make too many mistakes. What front end did you use for your swap?
« Last Edit: September 24, 2013, 09:36:00 AM by jojo »
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Offline spazz1984

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Re: 72 cb750 engine rebuild/project/ gsxr front end
« Reply #57 on: September 24, 2013, 08:19:44 AM »
Quote from: jojo on September 24, 2013, 08:06:32 AM
Quote from: spazz1984 on September 23, 2013, 10:41:54 PM
Great job on your project man I've done this front end swap but I also swap the rear end too with a little twist   

Sent from my SPH-L710 using Tapatalk 2

Thanks a lot, im learning as i go so reading a lot trying to make too many mistakes. What front end did you use for your swap?
98 gsxr750 I stole them only paid $75 for them
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Offline spazz1984

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Re: 72 cb750 engine rebuild/project/ gsxr front end
« Reply #58 on: September 24, 2013, 08:36:27 AM »
Then I relocated the swingarm 4" back and 3" up the frame to lower it using a 00 gsxr1000 swingarm

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Offline iron_worker

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Re: 72 cb750 engine rebuild/project/ gsxr front end
« Reply #59 on: September 24, 2013, 09:24:20 AM »
What did they/you clean the pistons up with? Soda blast?

They look like the should probably be fine to run as long as they measure out OK.

IW
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Offline jojo

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Re: 72 cb750 engine rebuild/project/ gsxr front end
« Reply #60 on: September 24, 2013, 09:33:27 AM »
I somehow misplaced my dowel pins/ tranny ball bearings and bearing set rings and cant find them. Anyone know where i can buy them?

Items 2, 3, and 12

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Offline jojo

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Re: 72 cb750 engine rebuild/project/ gsxr front end
« Reply #61 on: September 24, 2013, 09:34:25 AM »
Quote from: iron_worker on September 24, 2013, 09:24:20 AM
What did they/you clean the pistons up with? Soda blast?

They look like the should probably be fine to run as long as they measure out OK.

IW

They measured out just fine, i think they used a wash bath of some sort, no blasting.
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Offline jojo

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Re: 72 cb750 engine rebuild/project/ gsxr front end
« Reply #62 on: September 27, 2013, 09:09:53 PM »
Found the missing parts finally, so were good to go on that end. I also managed to lace the rear wheel but the front harley wheel not so much.... cant seem to figure this one out...

almost done truing this one.

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damn you harley wheel!

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Offline jojo

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Re: 72 cb750 engine rebuild/project/ gsxr front end
« Reply #63 on: September 27, 2013, 09:18:08 PM »
for those doing a gsxr front end on a 750 just some quick info. I have seen a lot of people swapping and extending stems on the gsxr lower trees. I have been scratching my head about my current setup and after mocking it all up and measuring the stems they match up exactly.  Both the stem on my 72 lower triple and 05 gsxr 1000 are 9.25" long. looks like i got lucky and wont be having to do any of the extra stuff for my swap

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Offline fastbroshi

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Re: 72 cb750 engine rebuild/project/ gsxr front end
« Reply #64 on: September 30, 2013, 09:58:37 PM »
  Wouldn't the proper place to measure be as close to the center of the stem as possible?  I think kicking it out like that could cause some disparity between your measurement from the base of the triple and the one I just described.  It would definitely be good to double check before you put new bearings on that stem so you've got the correct spacer(s) if any...IMO. 

  Say what colors are you going for?
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Offline jojo

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Re: 72 cb750 engine rebuild/project/ gsxr front end
« Reply #65 on: October 01, 2013, 12:28:09 AM »
Quote from: fastbroshi on September 30, 2013, 09:58:37 PM
  Wouldn't the proper place to measure be as close to the center of the stem as possible?  I think kicking it out like that could cause some disparity between your measurement from the base of the triple and the one I just described.  It would definitely be good to double check before you put new bearings on that stem so you've got the correct spacer(s) if any...IMO. 

  Say what colors are you going for?
quick update-

after some work this weekend im actually going to buy a new stem that is made for this application. Easier to press in and out of the lower tree and bolts right up and is the correct length. As far as the color scheme im going to keep a very similar color finish and accents as well (black/white/gold).
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Offline jojo

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Re: 72 cb750 engine rebuild/project/ gsxr front end
« Reply #66 on: October 01, 2013, 12:33:24 AM »
question to the engine people out there. looks like somewhere between the machine shop and my house i lost a nut that fastens the piston rod to the crank.

anyone know if i can still get these? can i just get something from the hardware store or is this a very specific type of treated nuts?
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Offline spazz1984

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Re: 72 cb750 engine rebuild/project/ gsxr front end
« Reply #67 on: October 01, 2013, 12:39:28 AM »
Quote from: jojo on October 01, 2013, 12:33:24 AM
question to the engine people out there. looks like somewhere between the machine shop and my house i lost a nut that fastens the piston rod to the crank.

anyone know if i can still get these? can i just get something from the hardware store or is this a very specific type of treated nuts?
I believe there a kind of lock nut. I have spare motor That's ripped apart. I could save you some time you if want
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Offline spazz1984

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Re: 72 cb750 engine rebuild/project/ gsxr front end
« Reply #68 on: October 01, 2013, 01:03:31 AM »
The bolts has that flat spot like a washer the bolt is cut this way

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Offline jojo

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Re: 72 cb750 engine rebuild/project/ gsxr front end
« Reply #69 on: October 01, 2013, 08:11:45 AM »
Quote from: spazz1984 on October 01, 2013, 01:03:31 AM
The bolts has that flat spot like a washer the bolt is cut this way

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Spazz- that would be great i would owe you big time. Ive called around and the machine shop told me to check a salvage yard but most of them close by the time im done with work  >:(
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Offline spazz1984

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Re: 72 cb750 engine rebuild/project/ gsxr front end
« Reply #70 on: October 01, 2013, 08:18:06 AM »
Quote from: jojo on October 01, 2013, 08:11:45 AM
Quote from: spazz1984 on October 01, 2013, 01:03:31 AM
The bolts has that flat spot like a washer the bolt is cut this way

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Spazz- that would be great i would owe you big time. Ive called around and the machine shop told me to check a salvage yard but most of them close by the time im done with work  >:(
Well pm me where to send it and will be on its way today
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Offline spazz1984

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Re: 72 cb750 engine rebuild/project/ gsxr front end
« Reply #71 on: October 01, 2013, 08:19:57 AM »
Quote from: spazz1984 on October 01, 2013, 08:18:06 AM
Quote from: jojo on October 01, 2013, 08:11:45 AM
Quote from: spazz1984 on October 01, 2013, 01:03:31 AM
The bolts has that flat spot like a washer the bolt is cut this way

Sent from my SPH-L710 using Tapatalk 2

Spazz- that would be great i would owe you big time. Ive called around and the machine shop told me to check a salvage yard but most of them close by the time im done with work  >:(
Well pm me where to send it and will be on its way today
Sent from my SPH-L710 using Tapatalk 2
Never mind you all ready have lol
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Offline jojo

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Re: 72 cb750 engine rebuild/project/ gsxr front end
« Reply #72 on: October 01, 2013, 09:49:08 AM »
Quote from: spazz1984 on October 01, 2013, 08:19:57 AM
Quote from: spazz1984 on October 01, 2013, 08:18:06 AM
Quote from: jojo on October 01, 2013, 08:11:45 AM
Quote from: spazz1984 on October 01, 2013, 01:03:31 AM
The bolts has that flat spot like a washer the bolt is cut this way

Sent from my SPH-L710 using Tapatalk 2

Spazz- that would be great i would owe you big time. Ive called around and the machine shop told me to check a salvage yard but most of them close by the time im done with work  >:(
Well pm me where to send it and will be on its way today
Sent from my SPH-L710 using Tapatalk 2
Never mind you all ready have lol
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Sent!
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Offline squirley

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Re: 72 cb750 engine rebuild/project/ gsxr front end
« Reply #73 on: October 01, 2013, 11:10:45 AM »
Why did you change your mind on the stem?
Who is making you a swap stem?
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Offline jojo

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Re: 72 cb750 engine rebuild/project/ gsxr front end
« Reply #74 on: October 01, 2013, 12:16:32 PM »
a guy named Devin, he's doing a gsxr swap on the his 750 digned one that bolts right up. Its better than having to make a plug and chopping up the original one. I feel like its too critical of a part to have it spliced and welded, especially since its aluminum.  Its $100 and i will press it in myself once it gets here. Its going to take about 3 weeks to get the stem.
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