Honda 6 Six Cylinder Race Bike......well kind of....

ohiocaferacer

ohiocaferacer

Been Around the Block
Well......it isnt actually an original Honda RC166 race bike, but more like a 1976 Benelli Sei 750. I recently purchased this bike in non-running condition with a title....with the goal to make it into a street legal replica racer(cafe racer). The ultimate look of the bike is undecided as of right now.....main goal is to get the motor up and running, then tear it down to start making some upgrades and modifications. Of course it will have one of my alloy race tanks.....and maybe some other one off hand made alloy pieces.

I started a thread over on the SOHC4 forum.....and thought i'd add one here also. Thought you guys may like to follow the build.

Anyways......here is how I got her:
3F53L23H25N55E55F3d5pb98db002d9571a98.jpg


Started working on it immediately.
photo1.jpg


Threw on an unfinished alloy CR750 tank and seat, but didnt like the look......will probadly build a new alloy tank similar to my CR350 alloy race tanks.
photo2.jpg


Hopefully will have something similar to this when its finished.
Benelli_Sei_01.jpg


.....but maybe a little closer to looking like my race bike......and street legal.
4032699469_b11efcb6e2_o.jpg


I did make some progress the other night......got it back up and running......not great.....but running!! Motor sounds really good...that was the main thing.
As soon as I figure out how to post video......I have a couple to post of it running.

I'll try and keep this updated with any changes......more to come!
 
I saw this on the "Recent Purchase" thread when you got it... VERY interested in what happens here. To say I am jealous is an understatement. Those old six's are so stinking cool! We have an old bike shop nearby and he had several Benellis I have drooled over.
 
Finally figured out how to upload vids.
Prior to me purchasing it, this bike spent many of the past years just sitting outside in the Ohio weather....sitting on the side of a house. Here is the first time it has run in years.
http://www.youtube.com/watch?v=Uzib6xFZ6Ic

.....and riding it down the street. It needs a lot of tuning still.....but it runs!!
http://www.youtube.com/watch?v=XSFhsv9rtuE
 
Man that thing sounds sweet and those pipes are awesome................makes me want to try making some hydro formed pipes!
 
Glad that bike will be used.
Been for sale for a while. Was thinking about having a buddy grab it.

I have held the pistons from a Honda 250/6 and have a cbx myself.
6 cylinder bikes are just cool.
 
wow!!! cant wait to see the progress, the first restored one running reminds me of
Agostini's MV six, breathtaking!!
If it turns out like you want it too it'll be amazing and BIKE OF THE YEAR!!!
 
Spent some time yesterday out in the garage. Put in some new spark plugs and sync'd the carbs......runs great, after sitting outside in the elements for several years. Idles great at 1200 rpm and pulls really strong riding down the road. This is gonna be a fun bike!!
http://www.youtube.com/watch?v=02UQt0Km0aI#
 
After getting the motor all tuned up and running. It was time to start looking into making modifications. I will be making this into more of a cafe racer...with some modern parts. This bike will be running an inverted front end with modern 17" wheels. A good combination of old and new.
First off...was to look into the rear of the bike. I just happen to be working on a GS1100 aluminum swingarm for another project bike. This swingarm has a brace I welded in from a CBR900RR swingarm, supporting a CBR600RR rear wheel.
GSSwingarm1.jpg


Next was to remove all the original parts off the Benelli.......and fit in all the parts shown above.
CBR4.jpg

CBR3.jpg

CBR2.jpg

CBR1.jpg

CBR5.jpg


Since this setup is for another project......looks like I will have to find another swingarm and wheel, for this one.
The only mods will be to the stock Benelli swingarm bolt and 2 shims for the swingarm, as its slightly thinner than the width of the Benelli frame. Also......will have to figure out how to get the sprockets lined up, as they are off. Probadly mill down the cush drive to recess the rear sprocket, then figure out a way to offset the counter shaft sprocket to push it out some from the motor.
Chain2.jpg


....more to come
 
I'm almost speechless. Those Sei's have always been on the top of my "find one and build list" Those swept pipes are so sexy.
 
GSSwingarm1.jpg


Sweet Mary Mother of Jesus! I have the same swinger in a box on the shelf. That is some nice grafting of the brace.
 
Following this one!

It might only be a four-stroke but it's got six cylinders!
And it's not (really) a Honda.

Crazy
 
I like where this is going to. Will keep an eye on this thread.

MV Agusta is my personal 6-cylinder dream bike, but regardless of make, 6 cylinders works for me.

Make it sound like this and your neighbors will love you.

http://youtu.be/WwnS06Z3oyY
 
One of the guys over on the SOHC4 forum gave me some info on the Cycle Exchange offset counter shaft sprocket. Looks like that may help get the chain lined up.
Look like I may have to order one.
off-set_sprox_2.jpg
 
JEEZUS H KRISTE OJ!!!
That Agusta clip was INSANE! I can't imagine free wheeling an engine like that. As he manually choked it on the thoats as he was jockey'in the throtttle sure payed off in spades... the responce got better, and better, and better!
Gonna play it again!
 
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