« previous next »
Pages: [1]   Go Down

Author Topic: Forseti Big Bore set up 750  (Read 7938 times)

0 Members and 1 Guest are viewing this topic.

Offline Tews19

  • I am no
  • Really Old Timer ...
  • *******
  • Posts: 6,465
Forseti Big Bore set up 750
« on: October 01, 2013, 06:57:07 AM »
I have been soaking the K1 for over a week. My dad continues to assist with the breaking free period as it is stored in his garage...

I came across these on eBay.. I did the search on here and a first has happened... Nothing comes up.......

http://www.ebay.com/itm/290987130213?item=290987130213&viewitem=&sspagename=ADME:X:RTQ:MOTORS:1123&vxp=mtr

Anyone have an insight for the 836 Forseti big bore kit?
Logged
1969 Honda CB750... Basket case
1970 Honda CB750 survivor.

Offline Greggo

  • Somebody's
  • Old Timer
  • ******
  • Posts: 4,164
  • Helmets Save Lives. Period.
Re: Forseti Big Bore set up 750
« Reply #1 on: October 01, 2013, 07:08:58 AM »
Looks nice.  Maybe the Aussies can help out with brand recognition?
Logged

Offline Don R

  • My Sandcast is a
  • Really Old Timer ...
  • *******
  • Posts: 20,104
  • Saver of unloved motorcycles.
Re: Forseti Big Bore set up 750
« Reply #2 on: October 01, 2013, 07:13:31 AM »
I wonder if they are the same as the cruizinimage kits?  They are less$$.
Logged
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline knowsnothing

  • Hot Shot
  • ***
  • Posts: 643
Re: Forseti Big Bore set up 750
« Reply #3 on: October 01, 2013, 07:15:24 AM »
I think i read somewhere that these are just the cheap ebay ones (seller cruzinimage) re-packaged and more expensive.  I could be wrong though. 
Logged
1978 CB750k Green - 811 engine
1978 CB750k Blue - for sale
1974 CB375F Faded Black - had to have that 6th gear
1976 CB400F Red - in many pieces
1973 CB350F TBD - in many pieces

Offline ekpent

  • Really Old Timer ...
  • *******
  • Posts: 13,512
  • To many bikes-but lookin' for more
Re: Forseti Big Bore set up 750
« Reply #4 on: October 01, 2013, 07:18:37 AM »
No domes and low compression like the El Cheapo's, as others have mentioned probably basically the same with a cool sounding name. You can market some and call them 'Tewster's Big Bore'
Logged

Offline Tews19

  • I am no
  • Really Old Timer ...
  • *******
  • Posts: 6,465
Re: Forseti Big Bore set up 750
« Reply #5 on: October 01, 2013, 07:32:26 AM »
I asked the seller what kind  of HP gains one could expect and any dyno charts as evidence....


seller's response: I don't have any dyno charts for this kit but the horsepower increase will be significant due tho the increase in displacement. The actual increase in horespower would also vary based on any other esisting modifications that have been made to the engine. We have sold quite a few of these kits and always get great feedback on them.

Thank you very much for your enquiry. If you have any other questions please don't hesitate to contact us

Kind regards
Chris


- japbikespares
Click "respond" to reply through Messages, or go to your email to reply




They do look nice.....

I guess an obvious question is what kind of HP will a 836 upgrade give over stock form? Only changes are the pistons. ...
Logged
1969 Honda CB750... Basket case
1970 Honda CB750 survivor.

Offline ekpent

  • Really Old Timer ...
  • *******
  • Posts: 13,512
  • To many bikes-but lookin' for more
Re: Forseti Big Bore set up 750
« Reply #6 on: October 01, 2013, 08:10:55 AM »
Biggest gain you could really feel on the saddle if all else is basically stock is probably more torque. Think a saying goes something like "There is no replacement for more displacement".
Logged

Offline bjbuchanan

  • Master
  • *****
  • Posts: 2,276
Re: Forseti Big Bore set up 750
« Reply #7 on: October 01, 2013, 02:47:07 PM »
I wanna say 8 hp, torque and horsepower are just functions of each other anyway. I know it is in a couple threads out there tho
Logged
The dirty girl-1976 cb750k, Ebay 836, Tracy bodykit
Round top carbs w/ 38 pilots, middle needle position, airscrew 7/8ths out, 122 main jet
Stock airbox w/ drop in K&N, Hooker 4-1

Don't trust me alone with a claw hammer and some pliers

Offline Ace

  • Hot Shot
  • ***
  • Posts: 336
Re: Forseti Big Bore set up 750
« Reply #8 on: October 01, 2013, 03:16:27 PM »
Haven't heard of those brand of pistons in Australia. That seller has a lot of them for sale for various bikes. I'm interested to see how Terry's elcheapo pistons go in his bike that he got from ebay. Something similar I think.
Logged
1971 CB750 K1 - Sold
1978 CB750 F2 Supersport - Sold
1981 CB900 Bol d'or - Sold
2006 CBR1100 XX Super Blackbird - Sold

Online PeWe

  • Really Old Timer ...
  • *******
  • Posts: 15,685
  • Bike almost back to the 70's 2015
Re: Forseti Big Bore set up 750
« Reply #9 on: October 02, 2013, 03:14:04 AM »
If you want to improve the engine, use 836 with higher compression like 10. something:1. More explosive power but need higher octane. If you want to use a cam with longer duration, higher CR is a must

These are like the mentioned cheap ones with compression Ratio 9.0:1.
A good choice if you like to be able to use gasoline with lower octane. I'm sure you will get more answers from people that have installed this kind of pistons. Or just search: cruzinimage

If you want to buy, check more sellers and avoid to spend too much.
http://www.ebay.com/itm/69-77-HONDA-CB750K-836cc-BIGBORE-PISTON-KIT-W-GASKET-/140988790224?pt=Motorcycles_Parts_Accessories&hash=item20d39635d0&vxp=mtr
« Last Edit: October 02, 2013, 03:17:39 AM by PeWe »
Logged
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline bjbuchanan

  • Master
  • *****
  • Posts: 2,276
Re: Forseti Big Bore set up 750
« Reply #10 on: October 02, 2013, 04:35:32 AM »
I am in the process of rebuilding an engine with cruzinimage Stuff. When I get the cylinders back I could post something.

I have done polishing and port matching on the head too
Logged
The dirty girl-1976 cb750k, Ebay 836, Tracy bodykit
Round top carbs w/ 38 pilots, middle needle position, airscrew 7/8ths out, 122 main jet
Stock airbox w/ drop in K&N, Hooker 4-1

Don't trust me alone with a claw hammer and some pliers

Offline ekpent

  • Really Old Timer ...
  • *******
  • Posts: 13,512
  • To many bikes-but lookin' for more
Re: Forseti Big Bore set up 750
« Reply #11 on: October 02, 2013, 04:45:41 AM »
Thought I have read where Hondaman has done up a couple of those for customers.
Logged

Online PeWe

  • Really Old Timer ...
  • *******
  • Posts: 15,685
  • Bike almost back to the 70's 2015
Re: Forseti Big Bore set up 750
« Reply #12 on: October 02, 2013, 06:15:13 AM »
Logged
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline Stev-o

  • Ain't no
  • Really Old Timer ...
  • *******
  • Posts: 34,419
  • Central Texas
Re: Forseti Big Bore set up 750
« Reply #13 on: October 02, 2013, 06:15:52 AM »
Quote from: ekpent on October 02, 2013, 04:45:41 AM
Thought I have read where Hondaman has done up a couple of those for customers.

Yes, he has, and I asked his opinion.  He said with a couple tweaks, they seem to be fine.  Time will tell.  Tews - ask the seller where the kits are made.  That may give a clue.
Logged
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline Don R

  • My Sandcast is a
  • Really Old Timer ...
  • *******
  • Posts: 20,104
  • Saver of unloved motorcycles.
Re: Forseti Big Bore set up 750
« Reply #14 on: October 02, 2013, 08:32:47 AM »
 I built mine with the Ebay kit. The compression height was high in my case. I had to shim the cylinder to keep the pistons off the head. I ported mine and at first used a Honda F cam which is fun. I floated the stock spring/valves, bent an exhaust, and then installed APE's springs and retainers with an aftermarket cam 370/330 lift. It's a blast to ride. I put the ugly king and queen seat back on because it's easier to stay in the saddle than the stock seat. They are cast pistons but I like the quality, I did smooth them a little as per Hondamans suggestions.  Nothing wrong with that kit especially the cruizinimage price.
Logged
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline ekpent

  • Really Old Timer ...
  • *******
  • Posts: 13,512
  • To many bikes-but lookin' for more
Re: Forseti Big Bore set up 750
« Reply #15 on: October 02, 2013, 11:54:51 AM »
Nick I am not a paranoid person but you have put a lot of personnel information out on the web showing that receipt in the first picture. If it was me I think I would delete it.  Just sayin'--There are some wacko's out there---  ;)
Logged

Offline Tews19

  • I am no
  • Really Old Timer ...
  • *******
  • Posts: 6,465
Re: Forseti Big Bore set up 750
« Reply #16 on: October 02, 2013, 12:04:11 PM »
Quote from: ekpent on October 02, 2013, 11:54:51 AM
Nick I am not a paranoid person but you have put a lot of personnel information out on the web showing that receipt in the first picture. If it was me I think I would delete it.  Just sayin'--There are some wacko's out there---  ;)


Eric, I wanted you to call me! That's why I posted! I deleted it... I was thinking that when I posted the pic too.. Thanks for the heads up....

Please check out my new thread on UNSTUCK K1!
Logged
1969 Honda CB750... Basket case
1970 Honda CB750 survivor.

Offline ekpent

  • Really Old Timer ...
  • *******
  • Posts: 13,512
  • To many bikes-but lookin' for more
Re: Forseti Big Bore set up 750
« Reply #17 on: October 02, 2013, 12:08:38 PM »
Quote from: Tews19 on October 02, 2013, 12:04:11 PM
Quote from: ekpent on October 02, 2013, 11:54:51 AM
Nick I am not a paranoid person but you have put a lot of personnel information out on the web showing that receipt in the first picture. If it was me I think I would delete it.  Just sayin'--There are some wacko's out there---  ;)


Eric, I wanted you to call me! That's why I posted! I deleted it... I was thinking that when I posted the pic too.. Thanks for the heads up....

Please check out my new thread on UNSTUCK K1!
Post up a pic of that cool kit again though Nick, that makes two you have kicking around now correct,the other an RC ? I will look for your unstuck K1 thread, how far did you shoot your juice ?  Gotta go 19' to beat Stevo.
« Last Edit: October 02, 2013, 12:12:38 PM by ekpent »
Logged

Offline FunJimmy

  • Who you calling
  • Old Timer
  • ******
  • Posts: 3,802
  • Vancouver
Re: Forseti Big Bore set up 750
« Reply #18 on: October 02, 2013, 12:51:44 PM »
Quote from: Tews19 on October 02, 2013, 12:04:11 PM
Quote from: ekpent on October 02, 2013, 11:54:51 AM
Nick I am not a paranoid person but you have put a lot of personnel information out on the web showing that receipt in the first picture. If it was me I think I would delete it.  Just sayin'--There are some wacko's out there---  ;)


Eric, I wanted you to call me! That's why I posted! I deleted it... I was thinking that when I posted the pic too.. Thanks for the heads up....

Please check out my new thread on UNSTUCK K1!

Dam, I missed all the personal info.
Was starting to get a wacko rush setting too.
Logged
You never see a motorcycle parked outside of a psychiatrist's office!

CB550 Cafe Interceptor a Gentlemans Roadster
http://forums.sohc4.net/index.php?topic=27159.0

Offline ekpent

  • Really Old Timer ...
  • *******
  • Posts: 13,512
  • To many bikes-but lookin' for more
Re: Forseti Big Bore set up 750
« Reply #19 on: October 02, 2013, 01:03:29 PM »
Quote from: FunJimmy on October 02, 2013, 12:51:44 PM
Quote from: Tews19 on October 02, 2013, 12:04:11 PM
Quote from: ekpent on October 02, 2013, 11:54:51 AM
Nick I am not a paranoid person but you have put a lot of personnel information out on the web showing that receipt in the first picture. If it was me I think I would delete it.  Just sayin'--There are some wacko's out there---  ;)


Eric, I wanted you to call me! That's why I posted! I deleted it... I was thinking that when I posted the pic too.. Thanks for the heads up....

Please check out my new thread on UNSTUCK K1!

Dam, I missed all the personal info.
Was starting to get a wacko rush setting too.
I made a copy if you want to go grab a few nice bikes and his other worldly possessions .
Logged

Offline Stev-o

  • Ain't no
  • Really Old Timer ...
  • *******
  • Posts: 34,419
  • Central Texas
Re: Forseti Big Bore set up 750
« Reply #20 on: October 02, 2013, 03:23:59 PM »
Quote from: ekpent on October 02, 2013, 12:08:38 PM
Quote from: Tews19 on October 02, 2013, 12:04:11 PM
Quote from: ekpent on October 02, 2013, 11:54:51 AM
Nick I am not a paranoid person but you have put a lot of personnel information out on the web showing that receipt in the first picture. If it was me I think I would delete it.  Just sayin'--There are some wacko's out there---  ;)


Eric, I wanted you to call me! That's why I posted! I deleted it... I was thinking that when I posted the pic too.. Thanks for the heads up....

Please check out my new thread on UNSTUCK K1!

how far did you shoot your juice ?  Gotta go 19' to beat Stevo.


He cant shoot as far as I did!
Logged
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline Stev-o

  • Ain't no
  • Really Old Timer ...
  • *******
  • Posts: 34,419
  • Central Texas
Re: Forseti Big Bore set up 750
« Reply #21 on: January 19, 2015, 03:30:41 PM »
Did you shoot your juice yet, Tews?
Logged
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........
Pages: [1]   Go Up
« previous next »