HOW TO: TOP MOUNT TURBO SET UP!!

[jmhinkle]

yeah, everytime I open my hood somewhere, eyes get big and jaws drop.

[Funkster777]

Doug - your set up is what I will do I'd I get the balls and money to go BT. I would do the GTX3071 instead.

[jmhinkle]

3071 = waste of time and money on this car. GTX3076 would be sick, but I don't think I'd want to spool any faster than I can.

[djuosnteisn]

I agree, 3076 and go with a bigger a/r hot side.

[dougefresh_]

Originally Posted by jmhinkle 3071 = waste of time and money on this car. GTX3076 would be sick, but I don't think I'd want to spool any faster than I can.

Yeah we both have the divided 3076... it spools ridiculously fast. I wouldn't want it to spool any quicker either. If I were to consider another turbo for this set up, it'd be a divided gt35r

[jmhinkle]

Yup, I'm thinking twinscroll GTX35 with .82 would be fucking nasty.

[djuosnteisn]

Originally Posted by jmhinkle Yup, I'm thinking twinscroll GTX35 with .82 would be fucking nasty.

QFT.

[Funkster777]

I stand corrected. I have plenty of time prior to getting there. I'm just learning from the experts.

[MSP611]

ya ill be runnin the gt3076 divided with the .82 hotside as well... the gtx would be crazy

[crazyp]

I have 16 pound spring in 44mm tial and its still jumping to 22 psi. Socket caps 16mm were to small for my oil slide, I guess my flange was thicker.
Thanks man if it wasnt for this HOwto I would have been screwed on what to do

[dougefresh_]

Originally Posted by crazyp I have 16 pound spring in 44mm tial and its still jumping to 22 psi. Socket caps 16mm were to small for my oil slide, I guess my flange was thicker. Thanks man if it wasnt for this HOwto I would have been screwed on what to do

You're welcome for the how to. My 3076 with the 16psi spring used to hold 20psi by redline as well. My oil slide didn't fit either, but iirc DJ didn't have a gasket at the time to use as a template, so he just eye-balled it. We had to drill mine out to almost 2x the size, but a couple washers on top, and it was all good.

[djuosnteisn]

Hmm.... flange redesign time me thinks.


Thanks for the feed back guys. I really appreciate it.

[dougefresh_]

Originally Posted by djuosnteisn Hmm.... flange redesign time me thinks. Thanks for the feed back guys. I really appreciate it.

Anytime holmes. Just to be clear, the angle of the slide itself was perfect. The holes for the allen bolts were just off... no biggie

[djuosnteisn]

Yeah. The new flanges i tried with crazyp had bolts with them, but i wasn't 100% sure if they were correct ones cause i don't have a garret to test fit on. And he ended up having to "slot" them.


Finding blank flanges without an AN fitting on them is difficult. I hand made the first ones, but that was a ridiculous amount of work for a flange. I really need a source for them.

I'll find some somewhere, or just pre-slot the one like he has.




I'm stoked the down pipes have been fitting as well. The jig seems pretty accurate.... especially considering i used it for my 4" down pipe, and it actually fit, hahahahaha.

[dougefresh_]

Originally Posted by djuosnteisn Yeah. The new flanges i tried with crazyp had bolts with them, but i wasn't 100% sure if they were correct ones cause i don't have a garret to test fit on. And he ended up having to "slot" them. Finding blank flanges without an AN fitting on them is difficult. I hand made the first ones, but that was a ridiculous amount of work for a flange. I really need a source for them. I'll find some somewhere, or just pre-slot the one like he has. I'm stoked the down pipes have been fitting as well. The jig seems pretty accurate.... especially considering i used it for my 4" down pipe, and it actually fit, hahahahaha.

The correct size for the allen bolts is in the OP of this thread if that helps. Yeah, my DP fit perfect man... I'm glad you're monster one did too! haha. Glad to see it finally coming to together . Thanks so much for bring the top mount set ups to life DJ!

[djuosnteisn]

[Ziggo]

<---- Jealous

Even more so after installing the BNR. Working behind the motor is a bitch.


---
- Zigatapatalka

[Dano]

Im not jealous. I just have all out hate for the top mount guys

That is all.


Tappin

[jmhinkle]

Check this post for an update on the manifold flange. If you have installed yours, you may consider doing this or if you haven't you should definitely do this.

[dougefresh_]

Originally Posted by jmhinkle Doug, keep an eye on your feed and return lines. I ended up buying this line and replacing both the feed and return lines completely. The line coming off the turbo return got brittle and cracked and was squirting coolant. This stuff should hold up to the heat. It is tight, but will fit over the PTO input. The feed side will need clamped down.

Finally ordered this hose. My feed line is pretty flat right where it comes off the turbo... it can't take the heat! Thanks again Joel for the tips on this. I looked under that, and it's a really easy swap. I wasn't sure if I'd have access to the PTO, but I always forget how close everything is under there! Got it shipped priority mail, so I'll be able to bang this out next week.

[steedspeed]

Here's some pics of the T4 manifold next to T3 for comparison. Gates are 44mm on both.

[dougefresh_]

Wish I went T4. Do you get a free jar of Afro Sheen with the purchase of a T4?

[jmhinkle]

Why t4? Because racecar!

[steedspeed]

I must say the T4 version looks very "right"

[djuosnteisn]

T4 is perfect on these cars when going for power IMO.

[SPEED6 KILLAH]

Originally Posted by djuosnteisn T4 is perfect on these cars when going for power IMO.

yup your right about that ...

[alien_sporez]

Originally Posted by steedspeed Here's some pics of the T4 manifold next to T3 for comparison. Gates are 44mm on both.

<--- BT newbie, please dumb it down for me.

So stock k04 turbo has a T3 flange, right? What makes a T4 flange better? (BTW, which one in the picture is the T3 and which is the T4?)

[crazyp]

Originally Posted by alien_sporez <--- BT newbie, please dumb it down for me. So stock k04 turbo has a T3 flange, right? What makes a T4 flange better? (BTW, which one in the picture is the T3 and which is the T4?)

stock ko4 is a mazda flange, not sure if the t3 is much bigger. T4 is the much bigger flange

[steedspeed]

Originally Posted by djuosnteisn Yeah. The new flanges i tried with crazyp had bolts with them, but i wasn't 100% sure if they were correct ones cause i don't have a garret to test fit on. And he ended up having to "slot" them. Finding blank flanges without an AN fitting on them is difficult. I hand made the first ones, but that was a ridiculous amount of work for a flange. I really need a source for them. I'll find some somewhere, or just pre-slot the one like he has. I'm stoked the down pipes have been fitting as well. The jig seems pretty accurate.... especially considering i used it for my 4" down pipe, and it actually fit, hahahahaha.

Let me know what you need and I'll machine some flanges for you no charge.

[djuosnteisn]

Originally Posted by steedspeed Let me know what you need and I'll machine some flanges for you no charge.

I wish i could quadruple thank this post Leen.

PM'ing you right now.

[Ferg]

subbed in hopes of news for top mount speed 3. also for amazing write up. good job everyone.

[djuosnteisn]

If / when i sell my wrx and possibly pick up a speed3... this will be one of my top priorities.

[Dano]

/tease


Tappin

[dougefresh_]

Uncorrected put down 338/318, and now 385/370 @25psi, uncorrected. Baseline Dyno SAE 318/308, and now 369/357 SAE @25psi.

Mazdaspeed6 BT Dyno GT3076 369awhp/357awtq SAE @25psi w Graphs.mp4 - YouTube

Mazdaspeed6 BT Dyno GT3076 369awhp/357awtq SAE @25psi w Graphs.mp4 - YouTube

Was running mid-11s, high-10s on last dyno w/ the D010 w/m nozzle. Had to pull fuel 3x, and ran out of time tuning. I'm going back to the D07 @24psi, and maybe a few gallons/tank of E85 to get me over 400whp/wtq

[djuosnteisn]

Your car looks sexy man.

[dougefresh_]

Originally Posted by djuosnteisn Your car looks sexy man.

Thanks man! ...and thanks to you . I'm also loving the H&R Sport springs... nice (much needed) drop, handles better, but rides close to stock. I think the springs are 33% stiffer, but not choppy like race springs. I wanted COs down the road, but my buddy game me these new in exchange for some stock shit, so I couldn't resist I'd like to powerdercoat my stock wheels black, charcoal, or gun metal, and put those back on at some point. Stockers look nasty, esp w/ some paint.

[hank25]

Wow so you did this work in visitors parking. . You are the man Doug! If you ever feel like driving an hour north to use my garage you are more than welcome. No lift and small but better than a parking lot. Great work and excellent write up !

[dougefresh_]

Originally Posted by hank25 Wow so you did this work in visitors parking. . You are the man Doug! If you ever feel like driving an hour north to use my garage you are more than welcome. No lift and small but better than a parking lot. Great work and excellent write up !

Thanks man, I may take you up on that if I get around to upgrading my map sensor, and maybe my fmic. Dude, you must live like 5 miles from New England Dragway, that's sweet.

[hank25]

Yeah its probably 3 miles away, so close I even get a discount for the noise lol. A friend I went to school with lives even closer to the track and hes got a nice lift set up. Just gotta bring some :phillyb: and I know he wouldn't mind either. I am gonna do my downpipe with it when i get around to ordering it. Great build your car looks amazing!

[jmhinkle]

Just incase someone is wondering, a GT35 fits just fine on this setup. Playing with one right now just to try it out.