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Sportster Motorcycle Air intake, Carburetor, EFI, Fuel, and Exhaust Problems, advice and/or how tos for Sporster and Buell motorcycle carburators, Electronic Fuel Injection (EFI), Air Intake, Fuel and Exhaust.

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  #1  
Old 24th February 2021
Blacky Blacky is offline
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Default DK Customs Air Intake

Will this PN be sufficient for a CV51? I don't care about the air element as that is easy to change.

https://www.dkcustomproducts.com/com...m#!prettyPhoto
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  #2  
Old 24th February 2021
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Curious regarding your choice of a CV51, a manifold will be important as well. This extensive -Twin forum has some meaningful insights. Hope it copies...https://www.v-twinforum.com/threads/....124079/page-3
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  #3  
Old 24th February 2021
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Quote:
Originally Posted by sportsterpaul View Post
Curious regarding your choice of a CV51, a manifold will be important as well. This extensive -Twin forum has some meaningful insights. Hope it copies...https://www.v-twinforum.com/threads/....124079/page-3
I didn't read the entire thread and I'm not about to. I just put a 51 CV on my Twin Cam 124" and that engine rendered me 136 hp and 142 ft lbs of torque. My choice of the CV is based off of that that is all that I have ever used is a CV and have never had any issues with them delivering the fuel and air that is needed for the engine. Why change from a product that works? Could this change, ABSOLUTELY! But as of now, the CV is what I am intending on using.

Bruce, (MaxHeadflow) is an intelligent man. I have spoken with him before.

Last edited by Blacky; 24th February 2021 at 20:18..
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  #4  
Old 25th February 2021
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So you are going to fit the same size carb on a 74" Sportster that you installed on your 124" TC?

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Old 26th February 2021
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Quote:
Originally Posted by AZbiker View Post
So you are going to fit the same size carb on a 74" Sportster that you installed on your 124" TC?

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No. I am going to fit a 51mm to a 90" I will buy a different one.
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Old 26th February 2021
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Quote:
Originally Posted by Blacky View Post
No. I am going to fit a 51mm to a 90" I will buy a different one.
Dayum. Is that all bore, or are you stroking it too?

Edit: if you don't make at least one dirty joke, I'm gonna be real disappointed. That one was low and right over the plate.

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Last edited by AZbiker; 26th February 2021 at 23:41..
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Old 27th February 2021
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Quote:
Originally Posted by AZbiker View Post
Dayum. Is that all bore, or are you stroking it too?

Edit: if you don't make at least one dirty joke, I'm gonna be real disappointed. That one was low and right over the plate.

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Hammer BFH...
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  #8  
Old 27th February 2021
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Quote:
Originally Posted by Blacky View Post
Hammer BFH...
Nice. I like the big bore stuff better, no need to alter the frame.

My completely unsupported by facts gut feeling is the 51 will be too big.

But the only way to tell will be the dyno.

It also depends where you want the power, midrange or top end.

I hope you keep us posted on the build, I love big bore Sportsters.

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Old 27th February 2021
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Quote:
Originally Posted by Blacky View Post
Will this PN be sufficient for a CV51? I don't care about the air element as that is easy to change.

https://www.dkcustomproducts.com/com...m#!prettyPhoto
Does a 51 mm CV carb have the same size intake pattern as the 40 mm ?

That looks to be the same (or very similar) air filter element used on many air cleaner assemblies, including in the HD/SE CV51 kit.

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Last edited by Maxeffort; 27th February 2021 at 16:53..
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