Build Thread (FE3, RX7 TII, EFR 6258, MS3) - Page 22 - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Build Threads Building a motor? Post the progress here.

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 06-23-2014, 10:10 AM   #421
Elite Member
iTrader: (8)
 
Join Date: Dec 2008
Location: Kingston, Ontario
Posts: 2,791
Total Cats: 71
Default

Jealous.

Makes me wish I had a project of my own on the go....




What kind of power are you aiming for this time around?
shlammed is offline   Reply With Quote
Old 06-23-2014, 06:20 PM   #422
Senior Member
Thread Starter
iTrader: (1)
 
Join Date: Jun 2007
Posts: 669
Total Cats: 29
Default

Quote:
Originally Posted by m2cupcar View Post
What did you use for the new mounts v3? Jeep mounts? I believe those have both sides completely isolated with bushing material, but use a "capture" method IF the bushing material gives way.
Yes CJ7. I removed the capture portion of the mount as it made contact with the sub frame. I suspect i'm getting excess vibrations through it. If not, they are a whopping 7$ to replace.
yank is offline   Reply With Quote
Old 06-23-2014, 06:23 PM   #423
Senior Member
Thread Starter
iTrader: (1)
 
Join Date: Jun 2007
Posts: 669
Total Cats: 29
Default

Quote:
Originally Posted by shlammed View Post

What kind of power are you aiming for this time around?
More than 300hp, less than 400hp... for now.

wheels, tires, brakes, flares, aero...
yank is offline   Reply With Quote
Old 06-23-2014, 07:04 PM   #424
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,165
Total Cats: 2,573
Default

so 399.99

nice
18psi is offline   Reply With Quote
Old 06-24-2014, 09:54 AM   #425
Elite Member
iTrader: (5)
 
m2cupcar's Avatar
 
Join Date: Jan 2005
Location: Atlanta
Posts: 7,236
Total Cats: 288
Default

bhp or whp?
m2cupcar is offline   Reply With Quote
Old 07-09-2014, 05:35 PM   #426
Senior Member
Thread Starter
iTrader: (1)
 
Join Date: Jun 2007
Posts: 669
Total Cats: 29
Default

New manifold underway. Back purged for silky smooth insides. Hella functional welds.





Attached Thumbnails
Build Thread (FE3, RX7 TII, EFR 6258, MS3)-img_6276_zpsf5cc19cc.jpg   Build Thread (FE3, RX7 TII, EFR 6258, MS3)-img_6277_zps601a271f.jpg  
yank is offline   Reply With Quote
Old 07-09-2014, 06:22 PM   #427
Senior Member
iTrader: (1)
 
Join Date: Apr 2011
Location: Columbia, SC
Posts: 1,342
Total Cats: 78
Default

Attached Thumbnails
Build Thread (FE3, RX7 TII, EFR 6258, MS3)-omg-its-beautiful-google-images.jpg  
Schuyler is offline   Reply With Quote
Old 07-09-2014, 07:59 PM   #428
I haz no trubo
iTrader: (2)
 
Oscar's Avatar
 
Join Date: Jan 2007
Location: Bolton, UK
Posts: 3,020
Total Cats: 114
Default

Mild arousal here. Not gonna lie.
Oscar is offline   Reply With Quote
Old 07-10-2014, 02:08 AM   #429
Senior Member
Thread Starter
iTrader: (1)
 
Join Date: Jun 2007
Posts: 669
Total Cats: 29
Default

Just FYI.

This is the game plan.



Going to tack up these next 2 runners, Pull them off at the collector and the port, weld them up, then cross my fingers and hope that it doesn't warp out of shape too much, then weld in the full section last.

Any pro tips? Maybe leave the ends tacked and weld as much as i can, then cut the ends loose and finish? This is literally the 2nd exhaust manifold I've ever made. Going for something a little better than my mig'd POS i made the first time.
Attached Thumbnails
Build Thread (FE3, RX7 TII, EFR 6258, MS3)-img_6281_zps18531a94.jpg  
yank is offline   Reply With Quote
Old 07-10-2014, 08:18 AM   #430
Elite Member
iTrader: (1)
 
Leafy's Avatar
 
Join Date: Jun 2012
Location: NH
Posts: 9,091
Total Cats: 90
Default

Once the whole thing is tacked up cut the runner off the collector and the head, fully weld them, then weld back to the collector. Make the weld connection to the manifold last to avoid most of the warping. And bolt the fland down good when you weld to the flange. And when you weld the flange, do like 1/2" bead on each runner and move down the line, once you do all 4 then start the next bead 180 out of the first one. Thats how I did mine, and I only bolted mine to a stock exhaust flange, no warpage at all. Take your time, keep the heating even, give it time too cool down every few passes and it wont warp.
Leafy is offline   Reply With Quote
Old 07-10-2014, 08:22 AM   #431
Elite Member
 
Join Date: Apr 2010
Location: Newcastle, Australia
Posts: 2,638
Total Cats: 25
Default

Bolt or weld it down so it doesnt warp. Weld a brace or 3 between the 2 flanges.

THINK ABOUT THE ORDER OF OPERATIONS THOROUGHLY.

Think twice weld once.

Dann
nitrodann is offline   Reply With Quote
Old 07-10-2014, 10:00 AM   #432
Elite Member
iTrader: (8)
 
Join Date: Dec 2008
Location: Kingston, Ontario
Posts: 2,791
Total Cats: 71
Default

What I do:

1" thick threaded heat sync for head flange when you do those welds (last welds for me)

For runner welds, break each runner in half and weld separately. when it warps, you have 3 spots now to make it fit instead of 2. (collector and head)

Place the runner halfs where you want them and then tack the **** out of it on the runner and runner to collector. do a nice tack where you can easily cut them off on the head flange. weld the runner and runner to collector now.


Cut the tacks off the head flange, deck all 4 runners where they meet the head flange on your large belt sander so that they fit nice and flat on the flange. bevel what you just decked so you get good penetration, tack in place on head flange to confirm alignment before you weld it all up and your good.

Deck the head flange after its naturally cooled (don't quench it) on the nice heat sync you have made. it will still warp a little bit, especially if your using stainless flanges.









Side note: whats up with the fore/aft angle of the turbo flange? You ideally want the turbo to sit flat that way.
shlammed is offline   Reply With Quote
Old 07-10-2014, 10:06 AM   #433
Elite Member
iTrader: (1)
 
Leafy's Avatar
 
Join Date: Jun 2012
Location: NH
Posts: 9,091
Total Cats: 90
Default

Quote:
Originally Posted by shlammed View Post
Side note: whats up with the fore/aft angle of the turbo flange? You ideally want the turbo to sit flat that way.
Angle gets slightly better down pipe clearance. EFRs are supposed to be able to be tilted 15 in that axis without any problems.
Leafy is offline   Reply With Quote
Old 07-10-2014, 10:16 AM   #434
Elite Member
 
Join Date: Apr 2010
Location: Newcastle, Australia
Posts: 2,638
Total Cats: 25
Default

Lol who cares about a few degrees?

Dann
nitrodann is offline   Reply With Quote
Old 07-10-2014, 10:53 AM   #435
Elite Member
iTrader: (8)
 
Join Date: Dec 2008
Location: Kingston, Ontario
Posts: 2,791
Total Cats: 71
Default

Quote:
Originally Posted by nitrodann View Post
Lol who cares about a few degrees?

Dann
I do.

I never want a customer to have an issue while I full well know that it could be an issue.


I was asking about it, I'm not being critical of his work, but it is a best practice to have it mount level. There are some setups that don't do this (k series Hondas for example) and I have no experience with the angles but I follow manufacturers recommendations to a t.
shlammed is offline   Reply With Quote
Old 07-10-2014, 11:23 AM   #436
Elite Member
 
Join Date: Apr 2010
Location: Newcastle, Australia
Posts: 2,638
Total Cats: 25
Default

Why does the few degrees hurt it?

Because of oil or something?

Acceleration and braking is a hell of a lot worse than 10 degrees. Is it a long term balance issue, bearing wearing unevenly or something?

Dann
nitrodann is offline   Reply With Quote
Old 07-10-2014, 11:26 AM   #437
Elite Member
iTrader: (8)
 
Join Date: Dec 2008
Location: Kingston, Ontario
Posts: 2,791
Total Cats: 71
Default

oil backs up in the center section on the side that's lower. its more of a long term reliability thing at a low angle. a high angle like some pro-stock type drag racers or the 30 degrees a Honda k series manifold would sit the turbo at would cause an issue with oil control before what I would consider "long term"
shlammed is offline   Reply With Quote
Old 07-10-2014, 11:28 AM   #438
Elite Member
iTrader: (1)
 
Leafy's Avatar
 
Join Date: Jun 2012
Location: NH
Posts: 9,091
Total Cats: 90
Default

BW lists the angle range to stay within, I'd just follow it.

Some turbos are setup for angle though, like the older subaru WRC turbos, they were mounted at like greater than a 45.
Leafy is offline   Reply With Quote
Old 07-10-2014, 12:48 PM   #439
Senior Member
Thread Starter
iTrader: (1)
 
Join Date: Jun 2007
Posts: 669
Total Cats: 29
Default

Should have seen the customer that came in our shop the other day with a custom turbo kit on his C5 Vette. The Turbo was mounted such that the turbine was on a vertical axis, no oil or water lines plumbed, open dump out the turbine housing and best part, the turbo drive pipe was only Tee'd into the existing exhaust system. We facepalmed pretty hard that day.

Thanks for all the advice guys. The slight angle is for wastegate actuator-chassis clearance, better intake and downpipe routing, slightly better hood clearance. I'm confident in my bearing housing cooling solution so i don't expect oil to coke up.

Last edited by yank; 07-10-2014 at 03:01 PM.
yank is offline   Reply With Quote
Old 07-10-2014, 04:50 PM   #440
Junior Member
iTrader: (1)
 
Join Date: Mar 2013
Posts: 49
Total Cats: -2
Default

Cool build! Sub'd
ahawks9er is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
OTS Bilstein to motorsports ASN conversion stoves Suspension, Brakes, Drivetrain 5 04-21-2016 04:00 PM
WTB MP62 (Hotside) (NB2) Rick02R WTB 3 01-03-2016 08:18 PM
Time to start learning and play with tuning The Gleas MEGAsquirt 3 10-01-2015 10:30 AM
Leaky Wilwoods mx592 Suspension, Brakes, Drivetrain 1 10-01-2015 01:45 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 04:02 AM.