modifying an 88-91 HKS Sport Exhaust cat-back to fit an 88-91 CRX?

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Old Aug 7, 2007 | 01:20 AM
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Default modifying an 88-91 HKS Sport Exhaust cat-back to fit an 88-91 CRX?

Has anyone done this? Which pipe needs to be modified? Tried searching but came up with nothing. Thanks in advance.
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Old Aug 9, 2007 | 04:00 PM
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Default Re: modifying an 88-91 HKS Sport Exhaust cat-back to fit an 88-91 CRX? (SmobbinSi)

bumpity
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Old Aug 9, 2007 | 04:01 PM
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I would bolt it starting from the back and see what you need to change...
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Old Aug 10, 2007 | 02:43 AM
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Default Re: modifying an 88-91 HKS Sport Exhaust cat-back to fit an 88-91 CRX? (SmobbinSi)

you'll need to shorten the b-pipe.
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Old Aug 10, 2007 | 03:48 AM
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Default Re: (MarlonT42)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MarlonT42 &raquo;</TD></TR><TR><TD CLASS="quote">I would bolt it starting from the back and see what you need to change...</TD></TR></TABLE>
cut, weld
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Old Aug 10, 2007 | 04:22 AM
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I have done this on my car.
I shortened the Mid Pipe on my car right after the resonator. I think I ended up cutting close to 6.5" out and then welding back together.

I found the easy way to do it is to do as follows.
* remove old exhaust from cat on back.
* Hang HKS muffler.
* install mid pipe to the muffler/tail section loosely.
* Have a friend measure how far you need to remove by measuring how much longer the flange that bolts to the cat is than it is supposed to be.
* Then remove the mid pipe, and cut out that amount from anywhere in the straight section that the resonator is on.
*Reinstall Mid Pipe, and enjoy a great exhaust.



-Jon
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Old Aug 10, 2007 | 05:20 PM
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Default Re: (import2nr88)

Jon,

Thanks for your help and advice- I had it done at a local muffler shop and it is nice to have an HKS again! Nice and quiet but definite HP bump, just like the one I had back in 91! I like how they have a darker (almost Greddy SP) coating, compared to the almost silver like I had before.

The tips didn't come out as straight as yours, but I'm still happy!








Modified by SmobbinSi at 7:05 PM 8/10/2007
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Old Aug 12, 2007 | 07:51 PM
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Your tips should line up just right, just move the hangers on the bottom over a little until it's centered. That is the same spot I cut and welded mine at as well.
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Old Aug 12, 2007 | 08:06 PM
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Default Re: (import2nr88)

Damnit, I need to dig mine out the basement and put it back on.
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Old Aug 6, 2008 | 06:01 PM
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Rob.'s Avatar
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Default Re: (goforbroke)

Best exhaust for ef's !
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Old Aug 6, 2008 | 06:09 PM
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Default Re: (Rob.)

Im debating on shortenting the HKS exhaust I have or just selling it. I will say it did look nice on the hatch and from the pics above DOES look good on the CRX but I am going to be going turbo and not sure if it will be big enough?
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