Topic: 1977 cb750f2 (915cc)

[Retro Rocket]

The cone looks good Tige, is it a 12 inch..?

thanks fellas.  I don't think it looks as good as the Motogp pope but I can't have a pipe that hits my oil filter.  Yes Retro, it's the 12 inch.

You can leave the pope out of it mate, i only wanted to know the length of the muffler.....  

[mrbreeze]

 

[tweakin]

Guess thats what I get for trying to respond via cell phone.

The cone looks good Tige, is it a 12 inch..?

thanks fellas.  I don't think it looks as good as the Motogp pope but I can't have a pipe that hits my oil filter.  Yes Retro, it's the 12 inch.

You can leave the pope out of it mate, i only wanted to know the length of the muffler.....  

[flybox1]

Looks good Tige. 
Ceramic on these is the way to go to maintain that SS color, or black it out.
SS yellowing is the only thing I dislike.

[tweakin]

Looks good Tige. 
Ceramic on these is the way to go to maintain that SS color, or black it out.
SS yellowing is the only thing I dislike.

Thanks Rob.  I actually love the look of stainless once it starts to turn gold, one of the reason I dig stainless pipes.  I am looking forward to the heat discoloration. 

[snowman]

With the "Turd" (71 cb750 build) in full swing, I decide to try a new pipe arrangement on the 915.  The motoGP stainless pipe is awesome but still hit my remote filter housing since I am running an oil cooler plate, it fits fine on a stock set up.  Plan is for the motoGP pipe to go on the turd so I decided to do something different with the Kerker to get the look I want.

Had the Kerker header ceramic coated and added a Cone Engineering 2.5 inch stainless can on it, just the look I am going for.  Not sure how the performance differences will stack up but I am more than happy.  Just wish I had easier access to a dyno so I could have tested all the different pipe set ups.

Also picked up some new all black Joker Machine clutch and points covers, I like the simplified look of no fins.

I have to say that the best look there is, but then again I'm kinda bias. Have a look at the exhaust I mocked up for my build.



Probably the same can, the only thing is that my 4-1 is a bit to bad to get it coated, so,I'll use wrap until I can find another set of pipes.


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[snowman]

By the way, had a closer look and was wondering what type of bolts are those you used to replace the exhaust studs. they're not normal Allen bolts, are they?


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[tweakin]

Love your exhaust choice snowman!  I removed the exhaust studs and am using 8mm stainless button head bolts, nothing too special.  Picked them up from bolt depot.com.   I saw in another thread you were looking for a place to buy replacement hardware, checked bolt depot for you but doesn't look like they ship outside the states. 

By the way, had a closer look and was wondering what type of bolts are those you used to replace the exhaust studs. they're not normal Allen bolts, are they?


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[Stev-o]

By the way, had a closer look and was wondering what type of bolts are those you used to replace the exhaust studs. they're not normal Allen bolts, are they?

Hey Snowman - Canadian Fasteners should have what you need, is this near you?


http://www.ancragescanadiens.com/produits_en/produits.html

[snowman]

Close enough and I'll  try to go by on the weekend or next week. Thanks Steve-o


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[FunJimmy]

I don't think it looks as good as the Motogp pipe but I can't have a pipe that hits my oil filter.

I disagree Tige. I've always thought the Yoshimura knock off pipes look incomplete.
The SS megaphone looks the biz. Think I'll follow your lead if you don't mind.

[tweakin]

I do understand what your saying Jim.  I think a similar set up would look great on the Intercepter!

I don't think it looks as good as the Motogp pipe but I can't have a pipe that hits my oil filter.

I disagree Tige. I've always thought the Yoshimura knock off pipes look incomplete.
The SS megaphone looks the biz. Think I'll follow your lead if you don't mind.

[FunJimmy]

I do understand what your saying Jim.  I think a similar set up would look great on the Interceptor!

Ordered!

[snowman]

Love your exhaust choice snowman!  I removed the exhaust studs and am using 8mm stainless button head bolts, nothing too special.  Picked them up from bolt depot.com.   I saw in another thread you were looking for a place to buy replacement hardware, checked bolt depot for you but doesn't look like they ship outside the states. 

By the way, had a closer look and was wondering what type of bolts are those you used to replace the exhaust studs. they're not normal Allen bolts, are they?


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Forgot ask earlier, what length did you use for the button head bolts. I know for studs they're 52mm and I'm sure they don't need to be that long.


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[tweakin]

Cant really remember.  I believe I bought 55mm and cut them down a bit.  The Kerkers flanges are pretty deep, so really depends on the header you have.

Love your exhaust choice snowman!  I removed the exhaust studs and am using 8mm stainless button head bolts, nothing too special.  Picked them up from bolt depot.com.   I saw in another thread you were looking for a place to buy replacement hardware, checked bolt depot for you but doesn't look like they ship outside the states. 

By the way, had a closer look and was wondering what type of bolts are those you used to replace the exhaust studs. they're not normal Allen bolts, are they?


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Forgot ask earlier, what length did you use for the button head bolts. I know for studs they're 52mm and I'm sure they don't need to be that long.


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[Stoli]

Quick question for you. I am trying to figure out which pods to go with on my second project and noticed that you have the K&Ns on this bike. I went with the APEs on my first bike to save a few bucks and they seem fine to me but the K&Ns get a lot of hype and I am trying to figure out if it is the design, construction or both.  I've gone through all the pod threads on this forum and the one thing that has been mentioned a few times is that the K&Ns have a built in "velocity stack". I have yet to find a decent picture of the inside of a K&N to do a comparison with the APE. I'm not asking you to go through the hassle of a pic, but was wondering if you could tell me the depth of the K&N that would be the equivalent of the APE dimension shown in the pic below? Essentially the APE has a 1" non-tapered tube for a "velocity stack". What does the K&N have?

[MRieck]

The K&N's have a taper at the mouth of the rubber area. It is kinda crude but you can see where a sanding roll has hit it to smooth it out. The taper is predominant on the upper and lower part of the rubber intake.

[tweakin]

The K&N's have a taper at the mouth of the rubber area. It is kinda crude but you can see where a sanding roll has hit it to smooth it out. The taper is predominant on the upper and lower part of the rubber intake.

Thanks Mike!

[Godffery]

The K&N's also have a MUCH better filter material and are not as prone to experiencing a lean condition in a cross wind, which is the primary reason I ONLY use K&N.

I also like to use the K&N Air Filter Wraps, shown here in this pic: http://www.vinmoto.org/gallery/v/VinMoto-Garage/album03/Godfferys-Garage-123/Waterhouse+Performance+motor+build/WH-147.JPG.html?g2_imageViewsIndex=1

http://www.knfilters.com/search/wrap.aspx

[Stoli]

Thanks guys. Can anyone tell me how deep the rubber intake area is?

[InAquaVeritas]

I'm running pods as well, the PO installed them and rejetted the carbs, but it still runs a bit lean. They should be K&Ns as well, I'll check.
I don't have a huge problem crosswinds, but I do with rain. I live in a very wet climate (the Netherlands) and they get saturated with water when parked for a bit or ridden in rain and spray. It doesn't get enough air in and it floods itself, even at 5000 rpm doing 100 km/h.
I will be taking them off Monday the 24th as I will start work on my bike, I can take photos if you still need more info.



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[Stoli]

A pic would be great, and a measurement as well.

Sorry for hijacking your build thread Tweakin. Last thing I wanted to do was start another pod discussion.

[InAquaVeritas]

No problem, I'll send you a PM with all this, unless someone else is looking for this info


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[Calumjs]

Hey did you instal some sort of spring return on the rear brake rear set?

[tweakin]

Hey did you instal some sort of spring return on the rear brake rear set?

Yes, If you look closely at the pics above you will see the spring behind the Brembo Master cylinder push rod, I wrapped it in heat shrink tubing.  It doesn't snap the foot brake back up after using, but puts pressure on it so it has good return and does not allow the foot brake to remain without tension.