modification of greddy manifold and downpipe
06-06-2012, 01:41 PM
#27
I am assuming you meant blow through (MAF post turbo)
how many esmril rx8's have you heard of running properly on Cobb?
I am not saying it can't be done at all ... it just can't be done well
you will get MUCH better readings with a pull through
how many esmril rx8's have you heard of running properly on Cobb?
I am not saying it can't be done at all ... it just can't be done well
you will get MUCH better readings with a pull through
06-06-2012, 07:54 PM
#28
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Reflanged to ft gt series turbo
This is the modified flanged to fit the gt series's turbos.
I actually bought the manifold and downpipe off "jeff" aka Mazda Maniac I originally planned to use the greddy turbo but when the manifold arrived it was already re-flanged so why not use a little better turbo. Plus I'm sure it would be a pita to grind and re-fit the factory flange. The only problem was the downpipe was not modified so the whole kit now sits up 3/8-1/4 higher and the downpipe will not bolt to the intended position.
I actually bought the manifold and downpipe off "jeff" aka Mazda Maniac I originally planned to use the greddy turbo but when the manifold arrived it was already re-flanged so why not use a little better turbo. Plus I'm sure it would be a pita to grind and re-fit the factory flange. The only problem was the downpipe was not modified so the whole kit now sits up 3/8-1/4 higher and the downpipe will not bolt to the intended position.
06-06-2012, 07:58 PM
#29
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This is the modified flanged to fit the gt series's turbos.
I actually bought the manifold and downpipe off "jeff" aka Mazda Maniac I originally planned to use the greddy turbo but when the manifold arrived it was already re-flanged so why not use a little better turbo. Plus I'm sure it would be a pita to grind and re-fit the factory flange. The only problem was the downpipe was not modified so the whole kit now sits up 3/8-1/4 higher and the downpipe will not bolt to the intended position.
I actually bought the manifold and downpipe off "jeff" aka Mazda Maniac I originally planned to use the greddy turbo but when the manifold arrived it was already re-flanged so why not use a little better turbo. Plus I'm sure it would be a pita to grind and re-fit the factory flange. The only problem was the downpipe was not modified so the whole kit now sits up 3/8-1/4 higher and the downpipe will not bolt to the intended position.
this leads me to my next problem Im debating on modifying the greddy down pipe or other just building my own I do already have a flange but im afraid it may be to restrictive what you guys think? The greddy d/p is on the top.
06-06-2012, 09:22 PM
#30
It kinda looks like the gt28 turbo will fit the stock manifold ... or would you say no?
Is it still the T25 flange? if so, all that Jeff did was slap another flange on the Greddy Manifold to raise the turbo up a bit ... unfortunately, that raises the rear of the turbo as well creating issues with DP - midpipe meeting...
However, I would imagine that you should still be able to get that to bolt up with some muscle. OP, did you have to bang out the pass side floor? You might have to ....
Worst Case, you will have to get a custom downpipe built....
Wow ... this thread makes me wanna say screw it ... sell my greddy turbo and build a custom low mount kit with like a T3 or T4 turbo (maybe twinscroll?
) with a custom 3.5 inch full exhaust
Is it still the T25 flange? if so, all that Jeff did was slap another flange on the Greddy Manifold to raise the turbo up a bit ... unfortunately, that raises the rear of the turbo as well creating issues with DP - midpipe meeting...
However, I would imagine that you should still be able to get that to bolt up with some muscle. OP, did you have to bang out the pass side floor? You might have to ....
Worst Case, you will have to get a custom downpipe built....
Wow ... this thread makes me wanna say screw it ... sell my greddy turbo and build a custom low mount kit with like a T3 or T4 turbo (maybe twinscroll?
) with a custom 3.5 inch full exhaust
06-06-2012, 09:49 PM
#31
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It kinda looks like the gt28 turbo will fit the stock manifold ... or would you say no?
Is it still the T25 flange? if so, all that Jeff did was slap another flange on the Greddy Manifold to raise the turbo up a bit ... unfortunately, that raises the rear of the turbo as well creating issues with DP - midpipe meeting...
However, I would imagine that you should still be able to get that to bolt up with some muscle. OP, did you have to bang out the pass side floor? You might have to ....
Worst Case, you will have to get a custom downpipe built....
Wow ... this thread makes me wanna say screw it ... sell my greddy turbo and build a custom low mount kit with like a T3 or T4 turbo (maybe twinscroll?) with a custom 3.5 inch full exhaust
Is it still the T25 flange? if so, all that Jeff did was slap another flange on the Greddy Manifold to raise the turbo up a bit ... unfortunately, that raises the rear of the turbo as well creating issues with DP - midpipe meeting...
However, I would imagine that you should still be able to get that to bolt up with some muscle. OP, did you have to bang out the pass side floor? You might have to ....
Worst Case, you will have to get a custom downpipe built....
Wow ... this thread makes me wanna say screw it ... sell my greddy turbo and build a custom low mount kit with like a T3 or T4 turbo (maybe twinscroll?
) with a custom 3.5 inch full exhaust
06-08-2012, 07:50 PM
#33
OP ... look what I found http://www.ebay.com/itm/Welded-Trans...ht_2009wt_1029
Another option for you to be to sell the manifold and get another one through greddy
Another option for you to be to sell the manifold and get another one through greddy
06-08-2012, 11:15 PM
#34
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OP ... look what I found http://www.ebay.com/itm/Welded-Trans...ht_2009wt_1029
Another option for you to be to sell the manifold and get another one through greddy
Another option for you to be to sell the manifold and get another one through greddy
Also the reason you have to add another flange to the manifold is b/c the compressor housing is to big to fit with the extra clearance.
I have ordered the water/ oil lines and I hope to start installing mid-next week.
I been working to f~n much lately and I haven't had the chance to give the car the attention it deserves
Ill take a lot of pix of all the mods when I start the install for anyone who maybe looking to upgrade to a gt turbo
I feel with the help of a 24pack, all of you "stinksauce" especially I WILL MAKE IT THROUGH THIS
Last edited by blakerx87; 06-08-2012 at 11:58 PM.
06-10-2012, 06:08 PM
#35
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ok guys I am about to install everything I just want to make sure of the best way to root all the coolant lines one more time.
1. on the coolant lines I was gonna take the line from the t/b run it down to the turbo and then back to the thottle body?
will this work and not have any negative effects on the cooling system?
1. on the coolant lines I was gonna take the line from the t/b run it down to the turbo and then back to the thottle body?
will this work and not have any negative effects on the cooling system?
06-10-2012, 06:21 PM
#36
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for the oil system I have a Oil Presssure Adapter simmiler to the pix attached
I was gonna run a -4an line stright down from the adapter to turbo and than to oil pan
1. What kind of oil reastrictor "if needed" should I use? the turbo is a Journal Bearing Garrett GT28
on garret's website it state's and I quote " an oil restrictor is generally not needed except for oil-pressure-induced leakage"
WTF DOES THAT MEAN?
I was gonna run a -4an line stright down from the adapter to turbo and than to oil pan
1. What kind of oil reastrictor "if needed" should I use? the turbo is a Journal Bearing Garrett GT28
on garret's website it state's and I quote " an oil restrictor is generally not needed except for oil-pressure-induced leakage"
WTF DOES THAT MEAN?
06-10-2012, 06:37 PM
#37
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as air lines go this is my set up or in my mind!!
1. Waistgate-The turbo I have as a fitting in the compressor covering I planned to just run this from the fitting right to the Waistgate.
2. BOOST GAUGE-I was thinking If I go with the option above I could use a "T" fitting between the w/g and the compressor fitting but how accurate would this be?
3. BOV- Use a 'T' fitting from the brake booster?
3.5 BOV- to air or back into Piping?
4. I planned to run the whole set up like the Greddy as far as the Intercooler piping goes Should I use 2.5 piping on the hot side and 3'' on the intake side?
5. If I do not blow this to the air And I recirculate this back in should This go back to the Piping with the Maf on it or back to the same piping the Bov is on?
1. Waistgate-The turbo I have as a fitting in the compressor covering I planned to just run this from the fitting right to the Waistgate.
2. BOOST GAUGE-I was thinking If I go with the option above I could use a "T" fitting between the w/g and the compressor fitting but how accurate would this be?
3. BOV- Use a 'T' fitting from the brake booster?
3.5 BOV- to air or back into Piping?
4. I planned to run the whole set up like the Greddy as far as the Intercooler piping goes Should I use 2.5 piping on the hot side and 3'' on the intake side?
5. If I do not blow this to the air And I recirculate this back in should This go back to the Piping with the Maf on it or back to the same piping the Bov is on?
Last edited by blakerx87; 06-10-2012 at 06:42 PM.
06-10-2012, 09:25 PM
#38
ok guys I am about to install everything I just want to make sure of the best way to root all the coolant lines one more time.
1. on the coolant lines I was gonna take the line from the t/b run it down to the turbo and then back to the thottle body?
will this work and not have any negative effects on the cooling system?
1. on the coolant lines I was gonna take the line from the t/b run it down to the turbo and then back to the thottle body?
will this work and not have any negative effects on the cooling system?
for the oil system I have a Oil Presssure Adapter simmiler to the pix attached
I was gonna run a -4an line stright down from the adapter to turbo and than to oil pan
1. What kind of oil reastrictor "if needed" should I use? the turbo is a Journal Bearing Garrett GT28
on garret's website it state's and I quote " an oil restrictor is generally not needed except for oil-pressure-induced leakage"
WTF DOES THAT MEAN?
I was gonna run a -4an line stright down from the adapter to turbo and than to oil pan
1. What kind of oil reastrictor "if needed" should I use? the turbo is a Journal Bearing Garrett GT28
on garret's website it state's and I quote " an oil restrictor is generally not needed except for oil-pressure-induced leakage"
WTF DOES THAT MEAN?
If you are on stock oil pressure, you could probably wait till later to do this.
as air lines go this is my set up or in my mind!!
1. Waistgate-The turbo I have as a fitting in the compressor covering I planned to just run this from the fitting right to the Waistgate.
2. BOOST GAUGE-I was thinking If I go with the option above I could use a "T" fitting between the w/g and the compressor fitting but how accurate would this be?
3. BOV- Use a 'T' fitting from the brake booster?
3.5 BOV- to air or back into Piping?
4. I planned to run the whole set up like the Greddy as far as the Intercooler piping goes Should I use 2.5 piping on the hot side and 3'' on the intake side?
5. If I do not blow this to the air And I recirculate this back in should This go back to the Piping with the Maf on it or back to the same piping the Bov is on?
1. Waistgate-The turbo I have as a fitting in the compressor covering I planned to just run this from the fitting right to the Waistgate.
2. BOOST GAUGE-I was thinking If I go with the option above I could use a "T" fitting between the w/g and the compressor fitting but how accurate would this be?
3. BOV- Use a 'T' fitting from the brake booster?
3.5 BOV- to air or back into Piping?
4. I planned to run the whole set up like the Greddy as far as the Intercooler piping goes Should I use 2.5 piping on the hot side and 3'' on the intake side?
5. If I do not blow this to the air And I recirculate this back in should This go back to the Piping with the Maf on it or back to the same piping the Bov is on?
2. You would be reading the boost at turbo, not in your manifold. Hook up the boost gauge to the line that VFAD is connected to. Hook the BOV there too.
3. That would probably work. I have mine with a T fitting that is hooked up to where the VFAD goes (post throtlebody)
3.5 What are you using to tune? How badly do you want the ricer psssh sound when you shift? Leaving it recirculated is a strongly, strongly recomended if using something like Cobb to tune it. If you are using a MAP based tuning system like adaptronic, sprint Re, int-x, you can do whatever you want.
My recommendation: recirculate it post MAF
4. Are you talking about coldside vs hotside (exhaust?) or pre vs post intercooler?
In terms of diameter usage vs space, greddy did a pretty good job. What power goal are you shooting for?
5. When you recirculate, you want to put it to the intake of the turbo, but after the MAF sensor.
Last edited by stinksause; 06-12-2012 at 10:55 AM.
06-11-2012, 11:01 PM
#39
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Ok new problem!!! Im trying to fit the greddy downpipe and it appears the flange is diffrent. I have an sr20 flange that bolts right up to the turbo so this must be some other size flange on the greddy downpipe. Anyone know what size it is b/c it looks like im going to have to have 2 options weld a new flange to the greddy downipe or weld the new flange to the back side of the turbo. Can anyone shed any light on this and what size is the greddy downpipe flange.
Only 2 bolts will fit the others are off
Only 2 bolts will fit the others are off
Last edited by blakerx87; 06-11-2012 at 11:28 PM.
06-11-2012, 11:31 PM
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Ok new problem!!! Im trying to fit the greddy downpipe and it appears the flange is diffrent. I have an sr20 flange that bolts right up to the turbo so this must be some other size flange on the greddy downpipe. Anyone know what size it is b/c it looks like im going to have to have 2 options weld a new flange to the greddy downipe or weld the new flange to the back side of the turbo. Can anyone shed any light on this and what size is the greddy downpipe flange.
Only 2 bolts will fit the others are off
Only 2 bolts will fit the others are off
06-12-2012, 12:37 AM
#43
3) Due to casting tolerances, the bolt holes in the GReddy downpipe may need to be slightly enlarged to allow proper fitment to the turbine discharge.
http://mazdamaniac.com/upgrade/GReddy%20Upgrade.html
06-12-2012, 12:33 PM
#44
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Quoted from MM Greddy Upgrade install instructions....
http://mazdamaniac.com/upgrade/GReddy%20Upgrade.html
http://mazdamaniac.com/upgrade/GReddy%20Upgrade.html
You were right the downpipe will have to be drilled out to fit the turbo all I did was take a bit like in the pix to enlarge the 3 bolt holes I just kept checking the downpipe against the turbo until I was able to see the full thread on the back side of the turbo.. I'm not a metal expert and i was surprised to find The cast iron is really soft so you must go slow.
Also you will have to do the same thing to the metal gasket so everything fits
I plan on useing a good amount of some kind of exhaust to sealent to make sure their is no leaking. Also fyi if you need an exhaust gasket from the downpipe to where it meets the cat advance auto carries the Walker gaskets $6.99 for it .
Same as what mazda carries a lot les in price
Last edited by blakerx87; 06-12-2012 at 12:39 PM.
06-12-2012, 05:49 PM
#48
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The Problem I have is welding the aluminum The reason I was thinking of the flex pipe is because I could run the filter outside of the car where's the temp would be cooler thru the hole behind the front bumper I'll figure it out tho
Last edited by blakerx87; 06-12-2012 at 06:04 PM.
06-12-2012, 08:30 PM
#49
To be completely honest man ... I would stop right now ... sell that manifold ... buy a greddy kit ... sell the greddy turbo (to say, Turblown) and bolt it up with the gt28 ... It should fit without issues
People will def buy the manifold
no offense or anything intended, it just doesn't seem like you are ready to run piping .... I am with 9k on this
I'll still help you out w.e you decide tho
People will def buy the manifold
no offense or anything intended, it just doesn't seem like you are ready to run piping .... I am with 9k on this
I'll still help you out w.e you decide tho
06-12-2012, 09:15 PM
#50
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I'm to far into this now and I'm not stopping This is my first turbo build from start to finish but everyone starts somewhere I'm just asking for a little advice. Don't flame me for passing ideas. I actually went to DURA-FIX "i think thats the name or something like that" in Taylor's S.c. today and met a guy who will weld everything for me even supply the tubing on the side I just got to slide him some loot so My build will continue.