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Author Topic: APE Ultra cranks  (Read 1583 times)

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Offline Big Jay

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APE Ultra cranks
« on: October 25, 2015, 06:06:27 PM »
APE Honda 750 sohc Ultra crank.
Top photo, finished crank, lightened, rod journal oil holes modded for more oil at the bearing, and dynamically race balanced to less than 1/3 gram. This is APE ‪#‎LC750‬
Bottom, same crank with Carrillo H beam rods installed, ready for the customer to drop into his cases. This is APE part ‪#‎ULCKH750‬. http://cbrzone.com/sohc.html
Visit APE Racecranks.com http://www.racecranks.com/

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Offline gschuld

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Re: APE Ultra cranks
« Reply #1 on: October 25, 2015, 07:49:29 PM »
Nice Jay.  I may have just seen that setup at MRieck's place not long ago. 

George
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Offline Cpcracing

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Re: APE Ultra cranks
« Reply #2 on: October 25, 2015, 09:48:45 PM »
Thanks for sharing the photo. I have one on order from you exactly like your bottom photo.  I can't wait to get mine!! 
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Offline PeWe

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Re: APE Ultra cranks
« Reply #3 on: October 26, 2015, 02:33:01 PM »
Quicker to red line, pass it and stay there without worries thanks to Ultra crank with Carillos :)
I'll try that next season.
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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 Tintop

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Re: APE Ultra cranks
« Reply #4 on: October 26, 2015, 04:18:05 PM »
metal porn  8) 8) 8) 8) 8)
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1977 CB550/4 Cafe - Speed Warrior / BOTM 03/11
1980 CB750F (project)
Whittaker GBF Vintage Racing Sidecar (XS750 power) - ITG / 151's / CMR Racing Products (SOLD)
1976 CB400 SS - stock / BOTM 04/11 (SOLD)
1973 CB750 K - basket case (SOLD)
77 CB550 Cafe build
550/750 Filter Thread
Sidecar Rebuild Thread

Offline MRieck

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Re: APE Ultra cranks
« Reply #5 on: October 27, 2015, 05:32:15 AM »
Quote from: gschuld on October 25, 2015, 07:49:29 PM
Nice Jay.  I may have just seen that setup at MRieck's place not long ago. 

George
You did George except bought the rods from Jay and installed them here. The part is for an overseas customer. ;)
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Owner of the "Million Dollar CB"

Offline gschuld

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Re: APE Ultra cranks
« Reply #6 on: October 27, 2015, 11:41:38 AM »
Mike,

I know you prefer old RC golden rods to anything else though.  :P .... ::)

George
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Offline PeWe

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Re: APE Ultra cranks
« Reply #7 on: October 27, 2015, 02:51:11 PM »
The crank-rod setup look almost too good to hide between the crank cases! :)
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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 PeWe

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Re: APE Ultra cranks
« Reply #8 on: November 13, 2015, 10:42:09 AM »
Funny, I have got a reason to time my cam a little bit later for more fun after 9000rpms!
1-2 degrees later might do just a little.
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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 BPellerine

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Re: APE Ultra cranks
« Reply #9 on: November 13, 2015, 01:59:56 PM »
is that your crank pewe,nice!
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1978 CB 750K ard and webers
another anfob

Offline PeWe

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Re: APE Ultra cranks
« Reply #10 on: November 13, 2015, 02:31:40 PM »
Yes, I understood I must have one since I got a tachometer again and saw the needle passing the red very often. I was waiting for a rod failure.
The rod in 4:th got its small end hitting the case when assemble the engine 30 years ago. I had to leave it for a hone to be able to fit the piston pin. I have since then had thoughts about that when driving fast.  Piece in mind and quicker responce.

I'll upgrade some when open cases again.
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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 BPellerine

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Re: APE Ultra cranks
« Reply #11 on: November 13, 2015, 06:47:56 PM »
maybe a bigger engine?
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1978 CB 750K ard and webers
another anfob

Offline PeWe

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Re: APE Ultra cranks
« Reply #12 on: November 15, 2015, 02:11:17 AM »
I have those thoughts too.... :) It will cost some...
How my 836 pistons and bores will look when taking it apart will help my decision.. Mikes block with 72mm pistons would be great!

I'll send a low mile primary drive to Germany for rubber upgrade. I have reinforced primary chains since before so the engine is ready for more. :)
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
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