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N11 exhaust new Q?

 
Old 04-26-2019, 05:35 PM
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20round
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Default N11 exhaust new Q?

Hey guys I just drove too corvette central and bought my N11 exhaust. I got it home and put it in place, and I think they cut the dr side main pipe too short? By the time I get the hanger in place and try and put a clamp on it I donít think it will work?
Does this look right?

If I pull it towards the front it just swings back too a relaxed position/ at rest.



This last picture, the dr side head pipe is only in the main pipe about 3/8-1/2 in. Pass side is fine. This is the rear hanger. And as you can see it is at rest just letting the pipe hang Straight down. Give me your thoughts here? I am gonna call them in the am sat and see what they say. Thanks Troy.

Last edited by 20round; 04-26-2019 at 05:59 PM.
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Old 04-26-2019, 05:52 PM
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aquaroscoe
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I cant comment specifically on this mfg, but I had to pull mine together using the ratchet straps end to end
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Old 04-26-2019, 09:35 PM
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Looka a bit short to me. I have the 2.5" intermediate pipes from Corvette Central (Part Number 323547) on my 68 last year. They extend approximately 1 3/8" forward of the center crossmember. I got a picture for you to see. My Corvette Central exhaust fit great.... I was pleasantly surprised since the car is 50+ years old.

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Old 04-27-2019, 08:34 AM
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Originally Posted by aquaroscoe View Post
I cant comment specifically on this mfg, but I had to pull mine together using the ratchet straps end to end
i would think you should not have too do that. it would always be under pressure fighting it self.. and i would think that it would be hard on the hangers and the manifolds....just my thoughts...thanks troy
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Old 04-27-2019, 08:38 AM
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YES!! your pipe is good! that looks like my pass side..do both stick out the same ?
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Old 04-27-2019, 09:28 AM
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This is the driver side with the exh bracket in place. There is not enough meat too clamp too

This is the pass side. I think this is perfect.
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Old 04-27-2019, 11:24 AM
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did you put the damper back on the manifold
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Old 04-27-2019, 10:20 PM
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Originally Posted by forman View Post
did you put the damper back on the manifold
i guess i dont know what that would have too do with the main pipes length and mounting? the forward head pipes might change in and out in length due too manifold position, but the mains are mounted permanent. i will find out for sure sunday, i am mounting the motor and trans so we will see how everything goes together...thanks troy
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Old 04-28-2019, 12:27 PM
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pipe looks too short

you could go to a muffler shop and have a new pipe made to the right length

if cc cant/wont fix it
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Old 04-28-2019, 05:57 PM
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Mine is short like your and I never had a problem like I said in the previous post I still used the damper and I have mcjacks shorty headers the car sounds great and itís not overbearing ... big block ...you wonít have a problem it will bolt right up
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Old 05-15-2019, 08:42 PM
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So 20round - what did you end up doing?
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Old 05-16-2019, 06:26 AM
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Originally Posted by carriljc View Post
So 20round - what did you end up doing?
well i am kinda stuck in limbo here! i had a set of newer manifolds on the car and i could not install the head pipe on the driver side.. so i am looking for the proper manifolds.. i do have a set of 65 bb manifolds i can install for mock up. and i think i am going too do that today. so i will post pics after i do that... thanks troy
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Old 05-16-2019, 11:49 AM
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20round
You might try writing to Corvette Central. They're really prompt at responding.
Since the part numbers on mine baked off over the last 6 months I wrote to ask them the part numbers for my intermediate pipes, and they answered overnight. I wanted to see if it was same part numbers as yours (they're not). Here are mine:

Odd number, 323655, is left side
Even number, 323654, is right side

Anyway, you can write and send them your picture and ask them if it's supposed to be that way.
I wrote to them at the following: [email protected]

But really, depending on what kind of hurry I was in, I might just weld on a piece of exhaust pipe and extend it, but I'm not an NCRS kind of guy

Last edited by carriljc; 05-16-2019 at 11:53 AM.
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Old 05-16-2019, 09:28 PM
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20round
Went to Corvette Central website to look up the parts they told me came with my intermediate pipes Part Number 323547 (since my stickers already burned off).
Odd number, 323655, is left side
Even number, 323654, is right side

Looks like the same 2.5" intermediate pipes are used for the big block 2.5" system.

https://www.corvettecentral.com/68-e...th-323713--mag

Can you still read the stickers on your N11 intermediate pipes? It should fit like it did on mine i would expect.

Last edited by carriljc; 05-16-2019 at 09:28 PM.
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Old 05-17-2019, 08:02 PM
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Originally Posted by 20round View Post
Hey guys I just drove too corvette central and bought my N11 exhaust. I got it home and put it in place, and I think they cut the dr side main pipe too short? By the time I get the hanger in place and try and put a clamp on it I donít think it will work?
Does this look right?

If I pull it towards the front it just swings back too a relaxed position/ at rest.



This last picture, the dr side head pipe is only in the main pipe about 3/8-1/2 in. Pass side is fine. This is the rear hanger. And as you can see it is at rest just letting the pipe hang Straight down. Give me your thoughts here? I am gonna call them in the am sat and see what they say. Thanks Troy.
I have the same issue. Unfortunately I ceramic coated mine so I can't return them. CA has never been very helpful in the past for me so I am having a local shop cut and make it fit. The system does not line up correctly to exit the exhaust panel properly. Pretty disappointed with CA. I will deal with it and move on.
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Old 05-17-2019, 09:18 PM
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On the bottom photo I noticed the bends in the tubes below the cross member do not line up. It looks like the left one bend is lower than the right one. So that would indicate the tube is too short, but not at the ending location where you are trying to clamp it, but somewhere before that.
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