OBX Manifold on a GT3071R [Archive]

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protegerider

11-09-2008, 03:00 PM

Hey guys, I got a question.
Can an OBX header with a t3/t4 flange fit on a garret GT3071R turbo?
http://www.cardomain.com/ride/2232189
i think OBX only makes this header with the t3/t4 flange so i guess it fits, right? idk

EDIT: ^ That was my old question, I have ditched the obx header idea, because its garbage, and am just going to use my stock manifold and weld a wastegate flange onto it. if you go to the more recent posts, i have questions about the turbo fitting, what kind to get, blah blah go check it out.

thanks!

jamesk

11-09-2008, 03:04 PM

yea same flange.

try to get your hands on the hiboost manifold though. its much better IMO

protegerider

11-09-2008, 03:17 PM

^ yeah but i went to hiboost's website and its not on there. also isnt the highboost mani pretty close to the stock msp mani except the hiboost has a flange for an external wastegate? also the OBX looks alot better IMO.

yellowmsp035

11-09-2008, 03:23 PM

just wait for a MAM mani in the forsale section.. i think the best one is the bullhorn style but it comes with a t2 flange. i just cut off the flange and welded on a t3 flange for my gt35r, then added an ext wg v-band to it also.. if you have the means its not too hard

http://img227.imageshack.us/img227/1452/img2069mt8.jpg

http://img509.imageshack.us/img509/8853/img2068df2.jpg (http://imageshack.us)

protegerider

11-09-2008, 03:39 PM

wow your engine looks amazing!

but anyway ive seen the MAM manifolds in the FS section and they are really expensive, plus i dont want to go through the trouble of cutting stuff off and welding.

SeR_Cyclops

11-09-2008, 08:26 PM

forcefed has a mam manifold for sale

OneQuikMSP

11-10-2008, 02:31 AM

forcefeds mounts a t2 flange. I did the obx mani with a gt30. Requires alot of modification to fit. The turbo bolts up just fine but a 3" downpipe was a PITA to fit and i had to move the power steering lines. I ended up moving the wastegate from one runner to the other so I could run the wastegate dump easier. It was a pain but it looks good now and works just fine. I had to get a MAM/SLS style thermostat housing though btw. http://memimage.cardomain.com/member_images/12/web/2232000-2232999/2232189_6.jpg?165019-306
http://memimage.cardomain.com/member_images/12/web/2232000-2232999/2232189_9.jpg?475910-309
http://memimage.cardomain.com/member_images/12/web/2232000-2232999/2232189_10.jpg?475910-309
I had to modify my intercooler piping (ION kit) and heat wrap everything. It still gets pretty warm under there though. I'm thinking about getting a turbo wrap honestly.

protegerider

11-10-2008, 03:28 PM

another question, is there a different GT3071R turbo you have to buy for the external wastegate set up or do you just get the normal one that has the internal wastgate where you have to use your stock actuator or buy a new one, like atp or forged.

because i wanted to run the external wastegate setup , like onequikmsp's, so can i buy the the GT3071R from protegegarage or ************* or do i have to get some special order one?

thanks

OneQuikMSP

11-10-2008, 04:45 PM

the gt3071 that crossover sells, bolts to your stock manifold or any t2 flanged manifold, like the one forcefed is selling. It's designed to mount to that flange and have just enough room. The one I have, even if it was a t2 flanged turbo, wouldn't fit in the stock postition because it has a bigger turbine housing and uses an external wastegate.

MSP_4_CODY

11-10-2008, 11:00 PM

what about your fans? i saw there are none lol, did you just use pushers?

OneQuikMSP

11-11-2008, 02:01 AM

Oh they're there. They are SPAL slim fans. Both pullers. 9" and a 12". Also kind of a requirement with that turbo/mani combo

protegerider

11-11-2008, 03:43 PM

well i want to have an external wastegate so where can i get the GT3071R, one that will fit?

OneQuikMSP

11-11-2008, 08:34 PM

Well u should be able to find them on ebay. Just make sure its a REAL Garrett turbo. If you don't want to go that route, I'm sure Ken from protegegarage.com can get one for you. I got mine used off our forums.

03.5MSP

11-11-2008, 08:46 PM

The OBX is the biggest POS manifold, design wise. The runners are not equal length, it doesn't have a pyramid collector, and and way the 4 runners come together is horrible.

I would just run the stock or MAM manifold with the t2 gt3071.

OneQuikMSP

11-11-2008, 09:49 PM

i agree but if you're looking for a t3 flange, that and the hiboost are you're only options aside from getting one custom made. I was told that the hiboost mani would take at least 6 months to get to me. I couldn't wait that long lol. I'll get dyno numbers as soon as I finish tuning it. Then we can compare to what others with the gt30 are making. More than likely i'm going to end up chopping off the "collector" and about an inch of each pipe and redo it using a real collector because I don't like how close the compressor inlet is to the block. I might cock it a little like the stock one was.

Scott

11-12-2008, 02:12 AM

Nothing against OBX as a company per say, but I've seen some really shoddy work from some of their pieces. Poor welds, flaws in the metal, and some designs they produce really don't impress me from an engineering standpoint. To me, it's really one of those "get what you paid for" situations.

OneQuikMSP

11-12-2008, 12:42 PM

Oh i agree. But they have some pieces that are just fine. My roommate has OBX longtube headers on his '00 F150 and they are beautiful. Perfect fit and they look identical to the $800 dynomax ones he was thinking about getting. It just seems OBX didn't really take its time designing the manifold for our car. But then again... neither did mazda when it designed our car. Lol.

protegerider

11-12-2008, 02:55 PM

thanks for your help guys, how can i get ahold of a hiboost mani and what is the price range for them? i rly want to run the external wastegate, so the obx and hiboost are the only ones out there? if so that sucks.

jamesk

11-12-2008, 03:20 PM

cp boost makes a good design manifold that has a external wastegate set up and t3 flange. they only sell them in their kits.

but im sure if you called them, they can ship you the header and downpipe for a seperate price. i would give them a shot.

cpboost.com

OneQuikMSP

11-12-2008, 05:58 PM

Good info jamesk! the hiboost mani runs roughly $385 and is only available through TBK performance in florida. I'd give them a call or try that CP Boost one jamesk was talking about. The only reason I bought the obx was because of the availability and the price. But like most people have said, u get what u pay for. True. It did require some modifying of things and/or custom things (downpipe, ic piping, and rad hose) like I said, I'd be more than happy to send you pics and help you throughout if you decide to do the OBX, but if its in your price range, go with the hiboost or cp boost mani.

yellowmsp035

11-12-2008, 08:08 PM

i also had the OBX mani with a T3/T4.. it performed well and held up good for the season i ran it.. but i knew after all the work i was putting in my car that i wanted the best design out there and the OBX was far off.. thats why i modified a MAM.. it is cheaper than going custom and the R&D is already done for you and proven to be amazing gains.. especially with the turbo you'd be installing

here is my old setup:
http://img236.imageshack.us/img236/7102/img0252pj0.jpg (http://img236.imageshack.us/my.php?image=img0252pj0.jpg)

http://img49.imageshack.us/img49/2296/img0251ds9.jpg (http://img49.imageshack.us/my.php?image=img0251ds9.jpg)

HighwayUFO

11-12-2008, 09:13 PM

For the love of GOD stay away from OBX. The welds will break down in no time. I am hating mine so much right now, and am thinking about bolting up the stock manifold with a T3 flange adaptor with built in wastegate flange.

Jboost

11-13-2008, 02:51 PM

OneQuikMSP

11-13-2008, 08:18 PM

That is beautiful!!!

protegerider

11-25-2008, 05:22 PM

alright, so after some research and visiting a shop, i have decided that i will not purchase an obx header, because of its crappy-ness, or a mam, because of its expensive-ness and unavailablility.
i have decided to go with the GT3071R that is made for our msps, not the t3 flange one, but the direct bolt on one. i figured this would save me alot of headache with fiting and such.

the only thing is that i still want to run an external wastegate.

i talked to this guy at a shop and he said he can weld the wastgate flange onto my stock manifold, so that saves me alot of money, but my question is where can i get the GT3071R that bolts on to the stock location but runs an external wastegate?

thanks

ogsp5

11-25-2008, 06:23 PM

There is a MAM mani with a T3 flange on ebay right now for about $600. It also has the flange for external W.G

protegerider

11-25-2008, 07:01 PM

dont want a mam, too expensive

ogsp5

11-25-2008, 09:08 PM

Then the only alternative is a thunder for about $400. So for $200 you get a rare item for your car. Or are you keeping the stock manifold ?

protegerider

11-26-2008, 08:38 AM

did you read post #25?? i talk about all the questions you just asked.

my main question is where can i get a garret GT3071R that runs an external wastegate and still directly fits to the stock location?

i think tis one would work, right?
http://www.atpturbo.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=GRT-TBO-020&Category_Code=GRT
is it the "T25 plus" T25 inlet T31 VBAND out externally wastegate option?

help please

ogsp5

11-26-2008, 09:21 AM

If you order it with the t-25 flange it should work. Also check with Ken at PG I think he has that turbo available. If you need a stock mani adapted with a external WG option let me know. I will have one for sale in about 1 month. Waiting for new manifold to arrive and install.

protegerider

11-26-2008, 02:35 PM

thanks bro, im getting a flange weld onto my stock mani tho. do you think i have enough room to run a 4 inch inlet or do i have to do 3?

ogsp5

11-26-2008, 04:26 PM

thanks bro, im getting a flange weld onto my stock mani tho. do you think i have enough room to run a 4 inch inlet or do i have to do 3?

I would use the 3in. Check with some memebers who have used this set-up and get some pictures which should help.

protegerider

11-26-2008, 05:53 PM

alright. do you have any pics of your stock mani with the flange welded on it? also do you know of anyone who did a similar build?

ogsp5

11-26-2008, 09:03 PM

I will post a picture by this week-end. There was another member who did the same thing with a external W.G but I can't remember who-sorry.

ItsSlow

11-27-2008, 12:10 AM

http://www.atpturbo.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=GRT-TBO-005&Category_Code=GRT

ItsSlow

11-27-2008, 01:09 PM

Oh and in case you dont know, you're going to have to get a custom Vband downpipe made if you get the one you posted..

protegerider

11-27-2008, 01:43 PM

what is the difference betwee the one you posted and the one i did?

OneQuikMSP

11-27-2008, 06:14 PM

The one ken at PG sells and the crossover auto one, both can bolt to the stock S pipe or any aftermarket one made for our car that bolts to the stock turbo. Its just t25 outlet flange. Where as the one that my car has on it and the one you posted uses a v band exhaust outlet.

protegerider

11-27-2008, 06:23 PM

^ im not worrying about the ones from pg or *************, like ive said b4, i want to run an EXTERNAL WASTEGATE. so i need a GT3071R that uses an external wg and will fit directly to the stock location. atpturbo has all these options but im not sure what works.

HighwayUFO

11-27-2008, 10:15 PM

Well, here is an update on how much I love the OBX Manifold. I live about 20ish miles away from Boise here in Idaho. I took off to a buddies house, and on the trip over, lost my Tial wastegate somewhere on the freeway. The weld that mounts the WG to the manifold completely gave out. Now, some inmate walking the freeway will pick this up and put it in his trashbag, only for it to find its place on the trash heap at the local landfill.

Lesson learned. DON'T ORDER THE DAMN OBX MANIFOLD. THEY ARE CHEAP!

Going to be fabricating the stock manifold with an external wastegate to go back on the car.

ItsSlow

11-27-2008, 11:12 PM

what is the difference betwee the one you posted and the one i did?

Same turbo, different compressor wheel.. flows just a little bit more..

protegerider

11-28-2008, 01:38 PM

so let me get this straight, i can drop in the gt3071r externalwastgate t25 from atpturbo directly, except i need to get a v-band downpipe fabricatred?

ItsSlow

11-28-2008, 10:45 PM

so let me get this straight, i can drop in the gt3071r externalwastgate t25 from atpturbo directly, except i need to get a v-band downpipe fabricatred?

yes and I think you need a different oil feed line.. Check with one of the companies that sell the 30r with a bolt on housing about that (PG, crossover, etc) ..

ItsSlow

11-29-2008, 10:13 AM

If you ever plan on a built motor.. here ya go..

http://www.atpturbo.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=GRT-TBO-006&Category_Code=GRT

Available in a bolt on housing!

protegerider

11-29-2008, 03:52 PM

^ hah thats a little overkill, and you still have to fabricate a v band downpipe for it to work.

i plan on building my motor, using the ************* shortblock build kit, before i drop in the bigger turbo anyway.

PS the GT3071R and the GT3076R are the same price and have the same options, what is the difference?? ItsSlow, you said they have different compresser whhels and it flows better, is it that big of a difference? Which one would be better for our FS-DE application?

thanks

yellowmsp035

11-29-2008, 08:01 PM

^^^ how is it overkill.. im running a 35R haha jerk!

protegerider

11-29-2008, 09:03 PM

ogsp5

11-29-2008, 10:58 PM

alright. do you have any pics of your stock mani with the flange welded on it? also do you know of anyone who did a similar build?

Pictures are posted in the photo and video section (engine bays)

protegerider

11-29-2008, 11:12 PM

thanks bro, looks good. what turbo are you using? also ive seen some stock manifolds where they put the flange in the middle, how come u welded urs off to the side?

ItsSlow

11-30-2008, 12:31 AM

PS the GT3071R and the GT3076R are the same price and have the same options, what is the difference?? ItsSlow, you said they have different compresser whhels and it flows better, is it that big of a difference? Which one would be better for our FS-DE application?

thanks

The 3076r has a bigger compressor wheel which will flow more air compared to a 3071r.. Although the 3071r will spool quicker due to its smaller compressor housing.. The only PHYSICAL difference between the two is the 3076 has a 76mm exducer compressor wheel and the 3071 has a 71mm compressor wheel.. It wont flow nearly as much, but it will spool slightly quicker.. Also, the turbine a/r housing will have an effect on spool..

Just a basic theory to remember, slower spool = higher flow..

808MP5

11-30-2008, 01:34 AM

I haven't tried any other turbo but my GT3076RS hits full boost between 3500-4500RPMs. I think it spools pretty quick for it's size. It starts spoiling immediatly if I floor it

ItsSlow

11-30-2008, 05:36 AM

I haven't tried any other turbo but my GT3076RS hits full boost between 3500-4500RPMs. I think it spools pretty quick for it's size. It starts spoiling immediatly if I floor it

which compressor housing are you using? Looks like the 4" inlet with the 2" outlet.. Also, how much is 'full boost', 10psi?

ogsp5

11-30-2008, 01:55 PM

thanks bro, looks good. what turbo are you using? also ive seen some stock manifolds where they put the flange in the middle, how come u welded urs off to the side?

Using the stock turbo. That was the best location to get the W.G to dump back into the down pipe.

yellowmsp035

11-30-2008, 02:43 PM

haha well im considering it now, i thought the only guy running the GT35 was that one msp from spain. how do you like the turbo?? how did you build your engine to support it and what supporting mods are you using? what psi are you running? sry for all the questions.

thanks bro

ya the spain guy thinks he is the only one running it too haha.. i just sit quiet so i dont burst his bubble haha..

the build isnt done yet because im waiting to finish the tranny over the winter instead of dropping in the new engine and then ripping out the tranny a couple months (or days haha) later when it blows.. so therefor i cant tell you how the turbo runs right yet.. but ill tell you that it takes A LOT of work to get it to fit unless you run the Hiboost Big Boost manifold.. but it is a cast mani and i want an equal length tubular.. and i paid the price

umm my mods? haha

Performance:
JE pistons
Pauter rods
Clevitte Bearing Set
Cometic Head Gasket
0.20" Overbored Block w/ Milled deck
Knifed Edged, Balanced, and Polished Crank
SuperTech Double Springs,
SuperTech Titanium Retainers,
PnP Head, gasket matched, 5 Angle Valve Job, Twiggy Cams
Ron Davis Full Aluminum Radiator
Greddy 1.3 Bar Rad Cap
JDM Mazdaspeed Thermostat
Spal 12" S-Blade Pull Slim Fan
Spal 10" S-Blade Push Slim Fan
DSS Stage 2 Axles
AWR Engine and Tranny Mounts 95a
AEM EMS w/ EBC
1000cc RC injectors
MAM 60mm TB
Perrin Fuel Rail
Walbro Fuel Pump (maybe another one in line also)
505zooms IM (when its shipped haha)
Garrett GT35R 0.63A/R
Custom MAM Bullhorn Mani w/ T3 Flange and 1.75" Ext WG Outlet
Custom 3" Downpipe with Wastegate Dumptube
QuickTime Electronic Cutout in Downpipe
Custom FMIC w/ 3" aluminum piping and 30"x10"x3" core
Modified GHL Cat Back Exhaust
TiAL 44mm Ext WG
TiAL 50mm BOV
Sandwich filter in the 4" Turbo Bellmouth
All Coated with Ceramic Coating or Heat Dissipation Coating

And Building the Drivetrain as we speak

Par Engineering 1-5 Straight Cut gearset
Spec stage 3+ Clutch
Spec flywheel
Welded MSP LSD (unless i pick up a Quaife soon)

LOTS of little things that i didnt list but that is the important parts to get an idea of the performance

protegerider

11-30-2008, 03:11 PM

nice, i forgot that that was you who posted your engine earlier in the thread. its looking really good. i think im going to settle for the GT3071R or the GT3076R. right now im figuring out my manifold set up. do you know what the specs are for the hiboost manifold? i really like the one that spain guy has. is it a t3 or t25 inlet?

speed3guy

11-30-2008, 03:15 PM

808MP5

11-30-2008, 03:25 PM

which compressor housing are you using? Looks like the 4" inlet with the 2" outlet.. Also, how much is 'full boost', 10psi?

4" compressor inlet 3" outlet
Got my tial at with a 3.67#spring and I have my boost controller set to 55% so I get between 7-8psi

OneQuikMSP

11-30-2008, 04:50 PM

HiBoost's mani is a t3 flange, mazdaspeed2003.5 is the guy you're refering too, and yes his is the hiboost "big boost" mani, t3 flange with a 35r on it

Mazdaspeed2oo35

11-30-2008, 05:17 PM

ya the spain guy thinks he is the only one running it too haha.. i just sit quiet so i dont burst his bubble haha..

the build isnt done yet because im waiting to finish the tranny over the winter instead of dropping in the new engine and then ripping out the tranny a couple months (or days haha) later when it blows.. so therefor i cant tell you how the turbo runs right yet.. but ill tell you that it takes A LOT of work to get it to fit unless you run the Hiboost Big Boost manifold.. but it is a cast mani and i want an equal length tubular.. and i paid the price

umm my mods? haha

Performance:
JE pistons
Pauter rods
Clevitte Bearing Set
Cometic Head Gasket
0.20" Overbored Block w/ Milled deck
Knifed Edged, Balanced, and Polished Crank
SuperTech Double Springs,
SuperTech Titanium Retainers,
PnP Head, gasket matched, 5 Angle Valve Job, Twiggy Cams
Ron Davis Full Aluminum Radiator
Greddy 1.3 Bar Rad Cap
JDM Mazdaspeed Thermostat
Spal 12" S-Blade Pull Slim Fan
Spal 10" S-Blade Push Slim Fan
DSS Stage 2 Axles
AWR Engine and Tranny Mounts 95a
AEM EMS w/ EBC
1000cc RC injectors
Perrin Fuel Rail
Walbro Fuel Pump (maybe an in line one also soon)
505zooms IM (when its shipped haha)
Garrett GT35R 0.63A/R
Custom MAM Bullhorn Mani w/ T3 Flange and 1.75" Ext WG Outlet
Custom 3" Downpipe with Wastegate Dumptube
QuickTime Electronic Cutout in Downpipe
Custom FMIC w/ 3" aluminum piping and 30"x10"x3" core
Modified GHL Cat Back Exhaust
TiAL 44mm Ext WG
TiAL 50mm BOV
Sandwich filter in the 4" Turbo Bellmouth
All Coated with Ceramic Coating or Heat Dissipation Coating

And Building the Drivetrain as we speak

Par Engineering 1-5 Straight Cut gearset
Spec stage 3+ Clutch
Spec flywheel
Welded MSP LSD (unless i pick up a Quaife soon)

LOTS of little things that i didnt list but that is the important parts to get an idea of the performance

Congratulations Very Nice Setup and well done, and don´t worry your not bursting any bubble of mine because i never had any, let´s see your numbers when you are done.. glad to see more people who believe in these engines capabilities. my car is currently down right now, blown head gasket, but i got few toys, tweaks and tune that are going to bring my baby back bigger, better and stronger !!! Good luck with your setup that shit looks like a real bad bad boy when is fully putted together if you ask me, keep us posted and post dyno videos and videos of it...

ItsSlow

11-30-2008, 06:40 PM

4" compressor inlet 3" outlet
Got my tial at with a 3.67#spring and I have my boost controller set to 55% so I get between 7-8psi

OH ok.. Im guessing it has a T3 manifold and its not a bolt on housing? Ive read that the 4" compressor housing has clearance problems..