Author Topic: K8 resurrection  (Read 1887 times)

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Online dragracer

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K8 resurrection
« on: December 01, 2019, 11:48:51 PM »
Since I'm 99% finished with my F model mono shock project, I think its past time for me to begin bringing this K8 back to life. I haven't ridden this bike in over 16 years. Its been sitting in the corner of the shop, slowly deteriorating.  I'm not certain exactly which path i'll follow on this one. Maybe a restomod, or perhaps a daily rider restoration. Thinking  about an 836 kit and a mildly ported head for a little extra power. Not trying to make this one a dragbike but at least want a bit of extra power on tap. Either way, I intend to make this a winter time project with a goal of riding it by mid summer 2020.

Offline madmtnmotors

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Re: K8 resurrection
« Reply #1 on: December 02, 2019, 04:11:52 AM »
About time you put those mint condition pipes to good use!  8)
TAMTF...


Wilbur



Projects:
"Evolution": http://forums.sohc4.net/index.php?topic=100352.0
"P.O. Debacle": http://forums.sohc4.net/index.php/topic,126692.msg1441661.html#msg1441661
F2/F3 O-rings: http://forums.sohc4.net/index.php?topic=113672.msg1300721#msg1300721
Cam Tower Studs: https://www.mcmaster.com/#93210a017/=t19sgp
Clean up that nasty harness: http://forums.sohc4.net/index.php?topic=137351.msg1549191#msg1549191
http://forums.sohc4.net/index.php/topic,148188.msg1688494.html#msg1688494
http://forums.sohc4.net/index.php/topic,139544.msg1579364.html#msg1579364
                                          
Charging system diagnosis: http://forums.sohc4.net/index.php?topic=1012.msg8345#msg8345
Get the manuals: http://manuals.sohc4.net/cb750k/
The Dragon: http://forums.sohc4.net/index.php?topic=45183.msg1571675#msg1571675
Headlight Switch: http://forums.sohc4.net/index.php?topic=113986.msg1283236#msg1283236
Branden's leak free top end thread: http://forums.sohc4.net/index.php?topic=107040.0
Engine Lifting Made Easy: http://forums.sohc4.net/index.php/topic,58210.msg1684742.html#msg1684742
                                      http://forums.sohc4.net/index.php/topic,100352.msg1675840.html#msg1675840
Static and Dynamic Timing: http://www.hondachopper.com/garage/carb_info/timing/timing1.html
Airbox Gasket Replacement: http://forums.sohc4.net/index.php/topic,114485.msg1290000.html#msg1290000
"Café" : http://forums.sohc4.net/index.php/topic,84697.msg953814.html#msg953814
PD Carb Choke Linkage: http://forums.sohc4.net/index.php/topic,100352.msg1669248.html#msg1669248
                                    http://forums.sohc4.net/index.php/topic,110931.msg1248354.html#msg1248354
                                    http://forums.sohc4.net/index.php/topic,48858.msg515204.html#msg515204
Follow up on your damn posts: http://forums.sohc4.net/index.php/topic,144305.msg1791605.html#msg1791605
Taiwanese Cam Chain Tensioners:  http://forums.sohc4.net/index.php/topic,155043.msg1774841.html#msg1774841
Gumtwo Seat Cover: http://forums.sohc4.net/index.php/topic,164440.msg1897366.html#msg1897366
Primary Drive: http://forums.sohc4.net/index.php/topic,166063.msg1919278.html#msg1919278
Tank Latch: http://forums.sohc4.net/index.php/topic,165975.msg1919495.html#msg1919495
Shorten your forks: http://vintage-and-classic-honda-s.456789.n3.nabble.com/How-to-shorten-forks-td4042465.html DO NOT CUT THE SPRINGS!
Clutch How To: http://vintage-and-classic-honda-s.456789.n3.nabble.com/How-to-change-and-adjust-a-clutch-SOHC-td4040391.html
Late model K7/K8/F2/F3 front sprocket cover removal: http://forums.sohc4.net/index.php/topic,178428.msg2072279.html#msg2072279
630 to 530 conversion: http://forums.sohc4.net/index.php/topic,180710.msg2094423.html#msg2094423

Sent from my Tandy TRS-80!

Online dragracer

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Re: K8 resurrection
« Reply #2 on: December 02, 2019, 06:52:02 AM »
About time you put those mint condition pipes to good use!  8)

Lol Wilbur. You might have made the decision for me on the direction of repair.  I actually forgot about the pipes.

Offline Jerry Rxman Griffin aka MuthaF'er

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Re: K8 resurrection
« Reply #3 on: December 02, 2019, 09:06:42 AM »
FRANK!!!!!! Old Faithful needs your attention first.... just sayin..... You have not run out of things to do.  ;)
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline madmtnmotors

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  • Sunny Central Florida
Re: K8 resurrection
« Reply #4 on: December 02, 2019, 09:19:16 AM »
About time you put those mint condition pipes to good use!  8)

Lol Wilbur. You might have made the decision for me on the direction of repair.  I actually forgot about the pipes.

Glad I could help keep you straight! I will probably go with the Delkevic stainless steel system on my next one. Hard to beat stainless for $350 when repop OEM go for $1200-$2000.
TAMTF...


Wilbur



Projects:
"Evolution": http://forums.sohc4.net/index.php?topic=100352.0
"P.O. Debacle": http://forums.sohc4.net/index.php/topic,126692.msg1441661.html#msg1441661
F2/F3 O-rings: http://forums.sohc4.net/index.php?topic=113672.msg1300721#msg1300721
Cam Tower Studs: https://www.mcmaster.com/#93210a017/=t19sgp
Clean up that nasty harness: http://forums.sohc4.net/index.php?topic=137351.msg1549191#msg1549191
http://forums.sohc4.net/index.php/topic,148188.msg1688494.html#msg1688494
http://forums.sohc4.net/index.php/topic,139544.msg1579364.html#msg1579364
                                          
Charging system diagnosis: http://forums.sohc4.net/index.php?topic=1012.msg8345#msg8345
Get the manuals: http://manuals.sohc4.net/cb750k/
The Dragon: http://forums.sohc4.net/index.php?topic=45183.msg1571675#msg1571675
Headlight Switch: http://forums.sohc4.net/index.php?topic=113986.msg1283236#msg1283236
Branden's leak free top end thread: http://forums.sohc4.net/index.php?topic=107040.0
Engine Lifting Made Easy: http://forums.sohc4.net/index.php/topic,58210.msg1684742.html#msg1684742
                                      http://forums.sohc4.net/index.php/topic,100352.msg1675840.html#msg1675840
Static and Dynamic Timing: http://www.hondachopper.com/garage/carb_info/timing/timing1.html
Airbox Gasket Replacement: http://forums.sohc4.net/index.php/topic,114485.msg1290000.html#msg1290000
"Café" : http://forums.sohc4.net/index.php/topic,84697.msg953814.html#msg953814
PD Carb Choke Linkage: http://forums.sohc4.net/index.php/topic,100352.msg1669248.html#msg1669248
                                    http://forums.sohc4.net/index.php/topic,110931.msg1248354.html#msg1248354
                                    http://forums.sohc4.net/index.php/topic,48858.msg515204.html#msg515204
Follow up on your damn posts: http://forums.sohc4.net/index.php/topic,144305.msg1791605.html#msg1791605
Taiwanese Cam Chain Tensioners:  http://forums.sohc4.net/index.php/topic,155043.msg1774841.html#msg1774841
Gumtwo Seat Cover: http://forums.sohc4.net/index.php/topic,164440.msg1897366.html#msg1897366
Primary Drive: http://forums.sohc4.net/index.php/topic,166063.msg1919278.html#msg1919278
Tank Latch: http://forums.sohc4.net/index.php/topic,165975.msg1919495.html#msg1919495
Shorten your forks: http://vintage-and-classic-honda-s.456789.n3.nabble.com/How-to-shorten-forks-td4042465.html DO NOT CUT THE SPRINGS!
Clutch How To: http://vintage-and-classic-honda-s.456789.n3.nabble.com/How-to-change-and-adjust-a-clutch-SOHC-td4040391.html
Late model K7/K8/F2/F3 front sprocket cover removal: http://forums.sohc4.net/index.php/topic,178428.msg2072279.html#msg2072279
630 to 530 conversion: http://forums.sohc4.net/index.php/topic,180710.msg2094423.html#msg2094423

Sent from my Tandy TRS-80!

Online dragracer

  • Really Old Timer ...
  • *******
  • Posts: 5,114
  • CB750F Dragbike
Re: K8 resurrection
« Reply #5 on: December 02, 2019, 10:07:59 AM »
About time you put those mint condition pipes to good use!  8)

Lol Wilbur. You might have made the decision for me on the direction of repair.  I actually forgot about the pipes.

Glad I could help keep you straight! I will probably go with the Delkevic stainless steel system on my next one. Hard to beat stainless for $350 when repop OEM go for $1200-$2000.

Wilbur, post a link to that system. I'm curious about the quality and look.

Online dragracer

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  • *******
  • Posts: 5,114
  • CB750F Dragbike
Re: K8 resurrection
« Reply #6 on: December 02, 2019, 10:10:16 AM »
FRANK!!!!!! Old Faithful needs your attention first.... just sayin..... You have not run out of things to do.  ;)

Don't worry Jerry. It's a priority to freshen up the F3. This k model will be worked on in between my other projects.  I just need to at least get started on it or it'll be sitting another 16 years.

Offline Jerry Rxman Griffin aka MuthaF'er

  • This MuthaF'er is getting to be a
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  • Posts: 14,912
  • Bought her new 4/75
Re: K8 resurrection
« Reply #7 on: December 02, 2019, 11:01:00 AM »
LOL  ;) At least you get your projects completed 
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline madmtnmotors

  • When did I get to be a
  • Really Old Timer ...
  • *******
  • Posts: 6,104
  • Sunny Central Florida
Re: K8 resurrection
« Reply #8 on: December 03, 2019, 03:50:23 AM »
TAMTF...


Wilbur



Projects:
"Evolution": http://forums.sohc4.net/index.php?topic=100352.0
"P.O. Debacle": http://forums.sohc4.net/index.php/topic,126692.msg1441661.html#msg1441661
F2/F3 O-rings: http://forums.sohc4.net/index.php?topic=113672.msg1300721#msg1300721
Cam Tower Studs: https://www.mcmaster.com/#93210a017/=t19sgp
Clean up that nasty harness: http://forums.sohc4.net/index.php?topic=137351.msg1549191#msg1549191
http://forums.sohc4.net/index.php/topic,148188.msg1688494.html#msg1688494
http://forums.sohc4.net/index.php/topic,139544.msg1579364.html#msg1579364
                                          
Charging system diagnosis: http://forums.sohc4.net/index.php?topic=1012.msg8345#msg8345
Get the manuals: http://manuals.sohc4.net/cb750k/
The Dragon: http://forums.sohc4.net/index.php?topic=45183.msg1571675#msg1571675
Headlight Switch: http://forums.sohc4.net/index.php?topic=113986.msg1283236#msg1283236
Branden's leak free top end thread: http://forums.sohc4.net/index.php?topic=107040.0
Engine Lifting Made Easy: http://forums.sohc4.net/index.php/topic,58210.msg1684742.html#msg1684742
                                      http://forums.sohc4.net/index.php/topic,100352.msg1675840.html#msg1675840
Static and Dynamic Timing: http://www.hondachopper.com/garage/carb_info/timing/timing1.html
Airbox Gasket Replacement: http://forums.sohc4.net/index.php/topic,114485.msg1290000.html#msg1290000
"Café" : http://forums.sohc4.net/index.php/topic,84697.msg953814.html#msg953814
PD Carb Choke Linkage: http://forums.sohc4.net/index.php/topic,100352.msg1669248.html#msg1669248
                                    http://forums.sohc4.net/index.php/topic,110931.msg1248354.html#msg1248354
                                    http://forums.sohc4.net/index.php/topic,48858.msg515204.html#msg515204
Follow up on your damn posts: http://forums.sohc4.net/index.php/topic,144305.msg1791605.html#msg1791605
Taiwanese Cam Chain Tensioners:  http://forums.sohc4.net/index.php/topic,155043.msg1774841.html#msg1774841
Gumtwo Seat Cover: http://forums.sohc4.net/index.php/topic,164440.msg1897366.html#msg1897366
Primary Drive: http://forums.sohc4.net/index.php/topic,166063.msg1919278.html#msg1919278
Tank Latch: http://forums.sohc4.net/index.php/topic,165975.msg1919495.html#msg1919495
Shorten your forks: http://vintage-and-classic-honda-s.456789.n3.nabble.com/How-to-shorten-forks-td4042465.html DO NOT CUT THE SPRINGS!
Clutch How To: http://vintage-and-classic-honda-s.456789.n3.nabble.com/How-to-change-and-adjust-a-clutch-SOHC-td4040391.html
Late model K7/K8/F2/F3 front sprocket cover removal: http://forums.sohc4.net/index.php/topic,178428.msg2072279.html#msg2072279
630 to 530 conversion: http://forums.sohc4.net/index.php/topic,180710.msg2094423.html#msg2094423

Sent from my Tandy TRS-80!

Offline Jerry Rxman Griffin aka MuthaF'er

  • This MuthaF'er is getting to be a
  • Really Old Timer ...
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  • Posts: 14,912
  • Bought her new 4/75
Re: K8 resurrection
« Reply #9 on: December 03, 2019, 09:08:29 AM »
I have the Delkevic header and the straight muffler. It LOOKS good and is not really loud (in the garage) with the baffle inserted. No real world experience as it has not hit the street yet (reference my previous comment LOL). Quality of the stainless is very good. It's turning a nice yellowish color. The pipes are all four separate and attach to the collector with springs. Easy to install. I think I installed the pipes with the springs to the collector before I installed the pipes to the head. It's MUCH lighter than a stock system. I will be home his weekend and can get pics if you'd like.
« Last Edit: December 03, 2019, 09:13:00 AM by Jerry Rxman Griffin aka MuthaF'er »
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Online dragracer

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  • CB750F Dragbike
Re: K8 resurrection
« Reply #10 on: December 03, 2019, 03:35:13 PM »
I have the Delkevic header and the straight muffler. It LOOKS good and is not really loud (in the garage) with the baffle inserted. No real world experience as it has not hit the street yet (reference my previous comment LOL). Quality of the stainless is very good. It's turning a nice yellowish color. The pipes are all four separate and attach to the collector with springs. Easy to install. I think I installed the pipes with the springs to the collector before I installed the pipes to the head. It's MUCH lighter than a stock system. I will be home his weekend and can get pics if you'd like.

Sounds like a decent system. Pictures would be helpful.

Offline BenelliSEI

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  • 1969 cb750
Re: K8 resurrection
« Reply #11 on: December 15, 2019, 06:18:18 AM »
Here’s the system on my ‘75 F. Decent photos, you can expand and see the mounting hardware. Extremely light, we’ll made, came with nice collector...... excellent value.