SR20DET Exhaust Manifolds - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Cgiles · 10-23-2013, 07:44 AM

Good morning,

Sorry for the stupid question, but I couldn't quite find anything through searching - here or google. I tried 'sr20det exhaust manifold "the same"' and various other combinations. Maybe I just didn't know what to type in to get the correct results. Anywho...

Are all SR20DET cast exhaust manifolds the same? I have a S15 engine and would hate to buy a manifold off eBay or the forum here from a S13 or a GTIr and it not fit. Perhaps this will help future searchers as well.

Thanks in advance.

hobbs · 10-23-2013, 07:57 AM

One big thing is to take note of RWD and FWD/AWD applications, they are not compatible with each other.

S13/S14/S15 manifolds will all place the turbo in the same location, there were subtle changes over the years to the OEM cast manifold. Aftermarket manifolds like the Tomei manifold will push the turbo more towards the firewall so you have to check compatibility with certain downpipes such as the PBM cobra. Your best bet is to get a stock manifold over any ISIS/megan/ebay manifold.

W10/W11/U13/RNN14 manifolds are made for FWD/AWD SR motors and places the turbo further down and more in the center of the motor, while these manifolds will bolt up to RWD SRs they simply will not work when a turbo is attached.

Cgiles · 10-23-2013, 08:17 AM

Yeah, I bought the car with a tubular header already on it, which now has a bad crack on one of the runners. I was going to go the CodyAce route, but didn't know if I could get any old SR-t manifold.

FWIW, here is what I'm looking at...

eBay Manifold

hobbs · 10-23-2013, 08:52 AM

Looks like the seller has incorrectly labeled that manifold as a GTi-R manifold, it's just a regular RWD manifold and should work fine for what you're looking for.

FYI, here is a GTi-R manifold:

Cgiles · 10-23-2013, 09:13 AM

Thanks Hobbs.

codyace · 10-23-2013, 05:23 PM

Quote:

Originally Posted by Cgiles

Yeah, I bought the car with a tubular header already on it, which now has a bad crack on one of the runners. I was going to go the CodyAce route, but didn't know if I could get any old SR-t manifold.

FWIW, here is what I'm looking at...

eBay Manifold

You def need the RWD manifold for sure. Have you checked classifieds here?

If you want to avoid downtime, I have a 'core' on the shelf ready to go...I can mail that to you and then refund you the difference when you send your manifold and flange to me. Either way let me know when you're ready go have it do

Tom N · 10-23-2013, 08:33 PM

Quote:

Originally Posted by codyace

You def need the RWD manifold for sure. Have you checked classifieds here?

If you want to avoid downtime, I have a 'core' on the shelf ready to go...I can mail that to you and then refund you the difference when you send your manifold and flange to me. Either way let me know when you're ready go have it do

Any chance you have any S15 manifolds you can do this with. Really trying to avoid down time putting a external on my manifold.

codyace · 10-23-2013, 08:40 PM

Quote:

Originally Posted by Tom N

Any chance you have any S15 manifolds you can do this with. Really trying to avoid down time putting a external on my manifold.

I don't have any S15 ones, but after having had one and putting a gate on it, I can say it's such a minute difference that I don't think it would ever make any power difference. The casting is better, but we're talking about going from a A- to an A ya know what I mean? I used to read they were better/different/wowzers, but after getting one I can say they aren't worth the premium they call for.

Tom N · 10-23-2013, 08:51 PM

Quote:

Originally Posted by codyace

I don't have any S15 ones, but after having had one and putting a gate on it, I can say it's such a minute difference that I don't think it would ever make any power difference. The casting is better, but we're talking about going from a A- to an A ya know what I mean? I used to read they were better/different/wowzers, but after getting one I can say they aren't worth the premium they call for.

How much would you simply sell a S14 manifold with waste gate flange welded on it in a way that works on a S14.
I no the difference isn't huge but I wouldn't want to send you a S15 manifold for a S14 one, I'm sure you could understand that.

codyace · 10-23-2013, 09:43 PM

Quote:

Originally Posted by Tom N

How much would you simply sell a S14 manifold with waste gate flange welded on it in a way that works on a S14.
I no the difference isn't huge but I wouldn't want to send you a S15 manifold for a S14 one, I'm sure you could understand that.

Oh without a doubt, I hear ya there 100%

The normal process is 100 dollars even (it's basicallyl shop time). We clean the manifolds up, bake the manifolds to get all the old oil/fuel out of it it, reclean it, re heat it and then weld it up.

It seems like a lot of prep work but it's why we never have had any issues in the many manifolds we've done. Shoot me a PM if you have more questions, I dont' want to clutter this guys thread too much.

10-23-2013, 07:44 AM	#1
Cgiles Join Date: Jun 2012 Location: South Posts: 23 Trader Rating: (1) Feedback Score: 1 reviews	SR20DET Exhaust Manifolds Good morning, Sorry for the stupid question, but I couldn't quite find anything through searching - here or google. I tried 'sr20det exhaust manifold "the same"' and various other combinations. Maybe I just didn't know what to type in to get the correct results. Anywho... Are all SR20DET cast exhaust manifolds the same? I have a S15 engine and would hate to buy a manifold off eBay or the forum here from a S13 or a GTIr and it not fit. Perhaps this will help future searchers as well. Thanks in advance.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

10-23-2013, 07:57 AM	#2
hobbs Nissanaholic! Join Date: Aug 2010 Location: Under a rock Posts: 2,263 Trader Rating: (43) Feedback Score: 43 reviews	One big thing is to take note of RWD and FWD/AWD applications, they are not compatible with each other. S13/S14/S15 manifolds will all place the turbo in the same location, there were subtle changes over the years to the OEM cast manifold. Aftermarket manifolds like the Tomei manifold will push the turbo more towards the firewall so you have to check compatibility with certain downpipes such as the PBM cobra. Your best bet is to get a stock manifold over any ISIS/megan/ebay manifold. W10/W11/U13/RNN14 manifolds are made for FWD/AWD SR motors and places the turbo further down and more in the center of the motor, while these manifolds will bolt up to RWD SRs they simply will not work when a turbo is attached.

10-23-2013, 08:17 AM	#3
Cgiles Join Date: Jun 2012 Location: South Posts: 23 Trader Rating: (1) Feedback Score: 1 reviews	Yeah, I bought the car with a tubular header already on it, which now has a bad crack on one of the runners. I was going to go the CodyAce route, but didn't know if I could get any old SR-t manifold. FWIW, here is what I'm looking at... eBay Manifold

10-23-2013, 08:52 AM	#4
hobbs Nissanaholic! Join Date: Aug 2010 Location: Under a rock Posts: 2,263 Trader Rating: (43) Feedback Score: 43 reviews	Looks like the seller has incorrectly labeled that manifold as a GTi-R manifold, it's just a regular RWD manifold and should work fine for what you're looking for. FYI, here is a GTi-R manifold:

10-23-2013, 09:13 AM	#5
Cgiles Join Date: Jun 2012 Location: South Posts: 23 Trader Rating: (1) Feedback Score: 1 reviews	Thanks Hobbs.