Will the stock KA exhaust mani fit onto a Sr downpipe?

[direktdrive]

Hi guys got a question about fitment. Will the stock s14 exhaust mani (for KA24DE) fit onto an sr downpipe?

I read a thread awhile ago about mating an s14 exhaust mani to an sr downpipe. Any verification? I just want to make sure.

I really don't care for new headers because I will be turboing in a couple of years. I just need to find a fix to my exhaust problem that I'm currently having. My front catalytic busted. So I was thinking just replace it with and sr downpipe, test pipe, and then catback.

Thanks in advance guys.

[D-UNIT]

you stock exhaust mani will bolt right into a test pipe

[direktdrive]

I wasn't talking about the test pipe, but the downpipe. Aren't they different?

My understanding it was the exhaust mani, then the downpipe, mated to either a test pipe/catalytic converter, and finally the catback.
Modified by direktdrive at 9:08 PM 6/21/2008

[D-UNIT]

silly rabbit , downpipes are for turbos. .

turbo car : exh manifold -> turbo -> turbo outlet elbow (optional) -> downpipe -> cat or test pipe -> cat back muffler system.

non turbo car : exh mani or header -> cat or test pipe -> cat back muffler system.

You don't need a downpipe if u don't have a turbo. I have stock exh. mani going straight into a 3" test pipe. bolts up simple.
Modified by D-UNIT at 1:04 PM 6/22/2008

[direktdrive]

yes i understand that. downpipes are for turbos.

However, if you read my first post, I stated I will be turboing in the near future. So it would be nice to have the downpipe in hand when I boost.

Also, how is your exhaust mani going straight into the test pipe unless you bypass the front cat? I know for the s14's we have a front catalytic converter after the exhaust mani, then into rear catalytic converter/test pipe.

In total, the s14 has two catalytic converters.

[D-UNIT]

Also, how is your exhaust mani going straight into the test pipe unless you bypass the front cat?

Isn't this your problem? Your front cat is no good right ? Take it out and put in a front test pipe. ur manifold will bolt right up. get a 2.5 or 3" cat back for now and u will be ready for turbo later.

[sultan]

sr downpipe bolts right up to s14 ka mani no problem

[direktdrive]

To Sultan,Thanks for the confirmation.

and to answer d-unit's question,If I just ran a test pipe after the exhaust mani it would be too short. Thus the catback wouldnt make it past the rear bumper. If I went your route d-unit, I would have make some sort of extension.

Then again, maybe we have different ideas what the definition is of a test pipe. To me, a test pipe a replacement pipe for the rear catalytic converter.

I decided to go with a downpipe because the s14's front catalytic converter is shaped similar to a downpipe.

The s14's front catalytic converters looks similar to this...

[D-UNIT]

aiiht'. eh, what do i know I have a s13. good luck with that.

[nocashmotorsport]

a friend of mine bought a 3 inch down pipe with a cat delete from frsport.com and it bolted up but it hit the floor. we had to fab a spacer on the top of the down pipe were it meets the manifold (about 2 inches) now it works fine. my advice, dont do it, really not nesessary

[Leachguy]

Think I'll need a spacer to connect my GReddy header (for an NA KA) to a downpipe?

[direktdrive]

To nocashmotorsport: Was it an s14 exhaust mani? Either way I'm probably still going to go with the downpipe. I already spent so much on this setup. If I do run into problems I'll let you guys know. I know the s13 exhaust setup is way different. (even with the ka24de).

To Leachguy: You don't need a downpipe if you are already have aftermarket headers. Shouldn't the greddy header bolt to the catalytic/test pipe?

[Leachguy]

I haven't received it yet but as far as i can tell it's going to bolt up to the first cat, not the second cat judging by the pictures. So i wanted to bypass the first cat and just run it with only the second cat on it by replacing the first with a downpipe.

[direktdrive]

o your right, the greddy headers bolt to the front cat.

so you're going the same route as me except you have aftermarket headers. cool. well, our installations should be the same. I will be installing my parts next weekend (4th of july). So I let you know of any fitment issues.

If you use a spacer Leachguy, your downpipe might hit the floor. The use of spacers will lengthen the downpipe. I think what nocashmotorsport meant was that his friend fabricated an bent extension arm so the downpipe would curve upward. Thus there would be more clearance.

Either way I'm still going to try this experiment. If all else fails and I'll just have dish out some cash on new headers (which bypass the front cat).

[Leachguy]

Sweet deal. Thanks for doing the test fitting for me. I hope the downpipe works because I'd much rather mate my GReddy header to a GReddy downpipe.

[alex4]

What's wrong with the stock cat? It's clogged up or something? Or it has external damage? If your fix doesn't work, try:1 If it's clogged up or something like that, gut the cat. Take something long, skinny and sharp, and ram that into the cat with a hammer.

2 If it has some external issue like rusting out or a hole or something, get a roll of muffler tape and a container of "muffler weld" putty. just goo up the tape and wrap it around it...wait for it to dry before starting the car. cost about 6 bucks... ghetto fix but better than buying a new header just to replace it with a turbo manifold in 6 months. if you just take that piece to a muffler / machine shop, they'd prolly weld over a hole or weld pieces back together for pretty cheap.

[Leachguy]

We wanna get rid of the stock cat because we really hate emission standards and would much rather further global warming. No really it's because of the power robbing by the small piping and the non-high flow aspects of the factory cats. BTW any word on how the downpipe fit yet?

[Chaluska]

lol, global warming is just a myth.

replacing the stock downpipe with the SR downpipe netted me like 4mpg increase..

I like 350 miles per tank (13 gallons)

[Leachguy]

What year do you have Chaluska?

[direktdrive]

Sorry for the late response Leachguy. Unfortunately I couldn't do the install last weekend because the parts didn't come in. The store that I purchased it from has been a bit slow on communication. I emailed them like 3 times already and they still haven't responded. Btw this is on eBay. I purchased one those eBay sr20 downpipes. I didn't want to spend much because this was only going to be a temp fix til I get enough money to afford a new front cat.

How things are going, I'm probably just going to buy a front cat already and charge it to my card. More debt coming my way lol.

However, if I still get the downpipe I can do a pic comparison between the s14 manifold/sr20 downpipe setup and the stock front cat/s14 manifold.

Let's hope that downpipe comes this week.

[Leachguy]

Hey don't worry about it. A response by next weekend would have been faster than most I'm used to haha. I'm in no hurry to get this project done. I need to get my engine completely built before anything else happens to the car (I'm doing a complete high compression overhaul) so it'll be a while because it still needs complete assembling before it gets put in the car. No exhaust or anything will be put on until that motor gets put in so I've got like a month.

[direktdrive]

Okay, So I finally got a response from the guys I purchased the downpipe from. They said there sr20 downpipes were out of stock and would issue me a full refund. So I took the refund since I needed the cash to pay off my new front and rear catalytic. Plus, I was worried about the ebay quality (you know)?

Sorry Leachguy I couldn't do the test fit. However I came upon a compatible downpipe made by Megan Racing. It is for the S14 Chassis KA though (so expect the ~2.25 in piping).

Megan Racing Down Pipe for KA24DE (S14) http://phase2motorsports.store....html

[Leachguy]

No problem. I'll prolly just throw some parts at it myself and see what happens haha. I don't think I could buy that Megan one. Not my cup of tea you know.

[lrb_2000]

I've never had a problem with Ebay downpipes. I've had 2 now. My s14 (N/A) has one of the $40 ones on it, and my s13 (Turbo) has one of the $100 ones with the flex pipe section. They both work, and fit perfect. Welds are great. It's kinda hard to mess one up.

[Leachguy]

So you're running one made for an sr on your 95 na KA?

[Leachguy]

Anyone else have any input? I'm still curious. If they won't line up then I'll just be knocking the guts out of the first cat to make it way less restrictive in case anybody cares.