My SRT-4 log exhaust manifold cracked

[A.J.]

This is not a picture of the cracked one. Just a reference picture.
http://i42.photobucket.com/albums/e301/thebest4/SRT-4/DSCF2739.jpg (http://s42.photobucket.com/user/thebest4/media/SRT-4/DSCF2739.jpg.html)

It cracked between cylinders 2 and 3. I only caught it because I was diagnosing a failing fuel pump.

It's time to upgrade. A friend of mine is willing to build be a tubular header in exchange for shop time. He's a D.I.Y.er so I'd just let him borrow a bay in my shop when he needs it. But I've been searching for cast log manifolds and found a couple, actually 4. I like the idea of a cast log because of it's ability to hold in the heat. If I ceramic coat it it will be even better. Since this is a daily driver I want it to be reliable, I don't want to deal with another cracked manifold even though my friend is pretty confident in the reliability of his MIG welds. I'm also going to be getting a new turbo and going to an external wastegate.

AGP T3 cast header:
http://www.agpturbo.com/srt-4-agp-cast-t3-manifold/

AGP T3 twin scroll cast header. The only problem with this one is the placement of the wastegate. It might hit my fire wall:
http://www.agpturbo.com/srt-4-agp-cast-t3-twin-scroll-manifold/

ATP cast exhaust manifold. I don't like the split ports. I'm concerned about getting proper clamping force on the gasket:
http://www.atpturbo.com/mm5/merchant.mvc?Screen=PROD&Product_Code=ATP-VSRT-007&Category_Code=VSRT

Treadstone stainless steel cast header. I don't like the split ports on this one either.
http://www.treadstoneperformance.com/product.phtml?p=283&cat_key=52

So I'm open to suggestions on exhaust manifolds, turbos, and external wastegates.

[tryingbe]

I have connection to AGP 50 trim turbo...

http://www.thelostartof.net/tryingbe/forsale/AGP50trim/4.jpg

[glhs727]

The original agp's had issues cracking. I just took off one from a customer's car a couple of months ago. The new design should be better, I hope. I like the treadstone the best. It is a stainless cast piece, and will have no issues making 500hp with the right turbo...

[A.J.]

I have connection to AGP 50 trim turbo...

http://www.thelostartof.net/tryingbe/forsale/AGP50trim/4.jpg

That's cool but I don't want to go cheap (T-M style). My goal for my van was 13's in the 1/4 mile but since I have to upgrade my turbo (because of my manifold) if I can get a something to spool quick and nudge me into the 12's (or faster) that's the route I want to go.

- - - Updated - - -


The original agp's had issues cracking. I just took off one from a customer's car a couple of months ago. The new design should be better, I hope. I like the treadstone the best. It is a stainless cast piece, and will have no issues making 500hp with the right turbo...

Giggity.

[GLHNSLHT2]

The AGP and treadstone look like the same manifold to me.

[A.J.]

The AGP and treadstone look like the same manifold to me.

The Treadstone is cast stainless and the AGP is cast iron. Other than what they're made of, they do look like the same design.

[wheming]

The AGP and treadstone look like the same manifold to me.

There's a big difference in turbo flange angle.
But other than that they do look very similar. I was thinking to get one at some point as an upgrade to my PT GT.
I think Mike Marra went with the Treadstone for his next evolution of The Contraption. Or was it Godspeed??... they have one also.

[A.J.]

I just realized AGP is local to me. I'm going to call them next week. I'm considering the twin scroll manifold but am concerned about having enough room. I'm going to find out if I buy the manifold, turbo (possibly ball bearing), and external wastegate from them if they're willing to work with me if something doesn't fit. Or I can drop my van off and they can test fit and once everything is good to go I can assemble and fabricate to complete the job.

[turbovanman²]

Why go TS if not using a matching turbo?

That's why Shayne built the headers out of stainless, cast likes to crack with heat and stress, :(

At least its easy to get at, :thumb:

[A.J.]

Why go TS if not using a matching turbo?


If I go twin scroll manifold will be going twin scroll turbo.

[contraption22]

That twin scroll manifold looks cool. If you get it, please post any measurements and pictures you can.

[A.J.]

That twin scroll manifold looks cool. If you get it, please post any measurements and pictures you can.

When don't I? I'm always eager to show off.

[turbovanman²]

If I go twin scroll manifold will be going twin scroll turbo.

Fine then, :p

[84omni]

I have ATP's 3076r kit on my srt 4 and it spools quick for that size of turbo. Boost starts to come on at around 2500. I got it from MAP for $2250 shipped.

[A.J.]

I went down to AGP today. With their twin scroll manifold they suggested their twin scroll Delta 46 turbo http://www.agpturbo.com/agp-delta-46-ball-bearing/ and their AGP 46 external wastegate http://www.agpturbo.com/agp-46mm-v-band-external-wastegate/. All three items are going to run $1950. They said their SRT-4 Neon customers really like this set up.

[contraption22]

Awesome. Did you get any pictures? Do you think you will have firewall clearance for the wastegate?

[A.J.]

Awesome. Did you get any pictures? Do you think you will have firewall clearance for the wastegate?

I didn't get any pictures because I didn't purchase it today. I brought my old cracked log manifold and S60 turbo because it was easier than bringing my van down. We compared and measured and it looks like it's going to fit. They said if I have problems with w.g. clearance I can weld two 20* v-band flanges together to angle the w.g. down. I'm leaving town on Thursday and won't be back until Monday. I'll probably get everything next week.

[Rampage16V]

Awesome. Did you get any pictures? Do you think you will have firewall clearance for the wastegate?

Waste gate points about the same way a stock down pipe would point

[shackwrrr]

The split ports are to prevent the cracking you encountered with your manifold.

[Rampage16V]

Divided ports may help that but are supposed to help a twin scroll turbo spin up faster. This is going in my Rampage with a twin scroll HX35 Holset

[GLHNSLHT2]

Dean he's talking about at the head on the ATP manifold. Not the divided ports for a divided scroll turbo.

[Rampage16V]

Ok yeah that's good too :-)

[contraption22]

Waste gate points about the same way a stock down pipe would point

Thanks, Dean!

I know you've been busy with the Daytona, but do you happen to have an idea about firewall clearance your Rampage with the is steup?

[Rampage16V]

Sorry Mike I have the engine out. But compared to my old set up with the minivan manifold there should be tons of room in an L body.

[contraption22]

Cool thank you!

[A.J.]

I bought the AGP twin scroll manifold. I'm 1/4 of the way there (manifold, turbo, external wastegate, incidentals to make it work). I'm debating on getting the Delta 46 or the Zeta 2.8 duel ball bearing turbo. When I bought the manifold I was asking the guy behind the counter about both those turbos. He went in the office to get information and the person he was asking asked, "What's this going on." He replied, "An SRT-4 in a mini-van." Then I heard, "A MINI-VAN! I've got to talk to this guy!" I chatted with a fellow named Ben for about about 45 minutes. Really cool guy. I look forward to doing more business with them.

http://i42.photobucket.com/albums/e301/thebest4/SRT-4/DSCF3040_zpsf466f75d.jpg (http://s42.photobucket.com/user/thebest4/media/SRT-4/DSCF3040_zpsf466f75d.jpg.html)

http://i42.photobucket.com/albums/e301/thebest4/SRT-4/DSCF3043_zps5da8d754.jpg (http://s42.photobucket.com/user/thebest4/media/SRT-4/DSCF3043_zps5da8d754.jpg.html)

http://i42.photobucket.com/albums/e301/thebest4/SRT-4/DSCF3042_zps5736be54.jpg (http://s42.photobucket.com/user/thebest4/media/SRT-4/DSCF3042_zps5736be54.jpg.html)

http://i42.photobucket.com/albums/e301/thebest4/SRT-4/DSCF3041_zpsb62b3d8d.jpg (http://s42.photobucket.com/user/thebest4/media/SRT-4/DSCF3041_zpsb62b3d8d.jpg.html)

http://i42.photobucket.com/albums/e301/thebest4/SRT-4/DSCF3044_zps5548b342.jpg (http://s42.photobucket.com/user/thebest4/media/SRT-4/DSCF3044_zps5548b342.jpg.html)

Plenty of room for the external wastegate.

http://i42.photobucket.com/albums/e301/thebest4/SRT-4/DSCF3045_zpsaf6afc42.jpg (http://s42.photobucket.com/user/thebest4/media/SRT-4/DSCF3045_zpsaf6afc42.jpg.html)

http://i42.photobucket.com/albums/e301/thebest4/SRT-4/DSCF3046_zps5dc7a159.jpg (http://s42.photobucket.com/user/thebest4/media/SRT-4/DSCF3046_zps5dc7a159.jpg.html)

[wheming]

I like the look of that piece!
Wonder if it would fit using on a pt.

[A.J.]

I can tell you it clears the PT intake when bolting up a T-3 turbo. And since the PT is based on the Neon you would think it does. When i get the rest of my parts from AGP, if I can remember I'll ask them.

[turbovanman²]

13 sec Minivan my azz, :rolleyes: :p


"What's this going on." He replied, "An SRT-4 in a mini-van." Then I heard, "A MINI-VAN! I've got to talk to this guy!" I chatted with a fellow named Ben for about about 45 minutes. Really cool guy. I look forward to doing more business with them.


I never get tired of that, :lol:

[A.J.]

I never get tired of that, :lol:

Me neither. When I run into such encounters I like to share them because I'm sure others enjoy it also.

[contraption22]

Awesome. Keep the updates coming!

[turbovanman²]

Me neither. When I run into such encounters I like to share them because I'm sure others enjoy it also.

Yep, :thumb:

[A.J.]

I just got a price from Jet Hot to coat my manifold inside and out with their 2500* coating. $315 not including shipping. I already got my combustion chambers, valves, piston tops, and exhaust runners in the head done when I put the engine together.

[turbovanman²]

These guys do great work and so far, I haven't been able to kill the coating, :p :lol:

http://www.performancecoatings.com/index2.html

[A.J.]

I got my manifold back from Jet-Hot today. They didn't coat the inside like I asked them to. I asked on the phone when ordering and was reassured in an e-mail that the inside WOULD be coated. This is the second order out of four Jet-Hot screwed up for me. I so want to move forward on this build and don't want to wait another two weeks to start assembling and fabricating. I'm seriously considering saying "F it" and putting it on the way it is. I already sent an e-mail but I'm going to call tomorrow to see what they're going to do about it. I'm so pissed.

[wheming]

That sucks.
I hate it when you agree on one thing and then the business you are patronizing does another.

[A.J.]

I talked to them today. They don't do the inside of turbo manifolds because if the stuff flakes off it could take out the turbo. If that's the case, then why didn't the salesman explain this when I ordered inside and out. If the salesman forgot to ask then why didn't I get a phone call explaining this after they realized it was a turbo manifold. If this stuff flakes off then why did they do my piston tops, combustion chambers, valves, and exhaust runners? "That wasn't a turbo engine" I was told. I replied, "It's the same damn engine the manifold is going on." So in the end, since I was quoted $315 for inside and out and only half the job was done they are refunding half my money. A lot of hassle could have been avoided if they just communicated with me (like I do with my customers when things don't make sense or I have questions) instead of doing just half and sending it back like I wouldn't notice.