Build Threads Building a motor? Post the progress here.

Aidan's loose oily bunghole actually runs a track lap

Thread Tools
 
Search this Thread
 
Old 10-30-2015, 04:43 PM
  #4901  
mkturbo.com
iTrader: (24)
 
shuiend's Avatar
 
Join Date: May 2006
Location: Charleston SC
Posts: 15,176
Total Cats: 1,680
Default

Wait are you going larger then 3" exhaust?

I have never been happy with the several v-bands and clamps I have found on eBay. My favorite are from Mandrel Bending Solutions.
shuiend is offline  
Old 10-30-2015, 04:45 PM
  #4902  
SADFab Destructive Testing Engineer
Thread Starter
iTrader: (5)
 
aidandj's Avatar
 
Join Date: Apr 2014
Location: Beaverton, USA
Posts: 18,642
Total Cats: 1,866
Default

I think i'm going to try 3.5"

We've (SADFab) had good luck with this guy:

3 5'' Stainless 304 V Band Flange Clamp Kit Male Female Turbo Exhaust Downpipe | eBay

Quick shipping. Seems like good quality stuff.

Responsive.
aidandj is offline  
Old 10-30-2015, 04:49 PM
  #4903  
mkturbo.com
iTrader: (24)
 
shuiend's Avatar
 
Join Date: May 2006
Location: Charleston SC
Posts: 15,176
Total Cats: 1,680
Default

The thing I started looking for on v-band flanges was how long back the part was that goes over the pipe. It allowed me to keep the actual flange part cooler while welding.
shuiend is offline  
Old 10-30-2015, 04:51 PM
  #4904  
SADFab Destructive Testing Engineer
Thread Starter
iTrader: (5)
 
aidandj's Avatar
 
Join Date: Apr 2014
Location: Beaverton, USA
Posts: 18,642
Total Cats: 1,866
Default

I'll measure when I get home. I plan to weld it all clamped down. Probably weld in patches too. Who knows yet.

They are the male female type.
aidandj is offline  
Old 10-30-2015, 05:41 PM
  #4905  
SADFab Destructive Testing Engineer
Thread Starter
iTrader: (5)
 
aidandj's Avatar
 
Join Date: Apr 2014
Location: Beaverton, USA
Posts: 18,642
Total Cats: 1,866
Default

Only issue is finding 3.5" mandrel bend tubing. If it doesn't show up in b-stock its not easy to find. I've found a bit on ebay. 180* for like $50. I bet I can get away with a single 180* bend.

Cut the pipe at an angle to get it pointed at the diff. 45* up. 45* flat. 45* towards the middle, 45* out the back.

I'll get the tape measure out tonight.
aidandj is offline  
Old 10-30-2015, 05:42 PM
  #4906  
SADFab Destructive Testing Engineer
Thread Starter
iTrader: (5)
 
aidandj's Avatar
 
Join Date: Apr 2014
Location: Beaverton, USA
Posts: 18,642
Total Cats: 1,866
Default

I also need to leave a spot to put a cat at some point.
aidandj is offline  
Old 10-30-2015, 05:47 PM
  #4907  
SADFab Destructive Testing Engineer
Thread Starter
iTrader: (5)
 
aidandj's Avatar
 
Join Date: Apr 2014
Location: Beaverton, USA
Posts: 18,642
Total Cats: 1,866
Default

Fuckit. 3.5 is out. A friend offered to go in halvsies on a box of 3" b stock. So it makes it even cheaper. And i think i have enough straight 3" to finish the exhaust.

I'll do 3.5 later.
aidandj is offline  
Old 10-30-2015, 05:51 PM
  #4908  
Elite Member
iTrader: (16)
 
patsmx5's Avatar
 
Join Date: Aug 2007
Location: Houston, TX
Posts: 9,292
Total Cats: 475
Default

Originally Posted by shuiend
Wait are you going larger then 3" exhaust?

I have never been happy with the several v-bands and clamps I have found on eBay. My favorite are from Mandrel Bending Solutions.
I have the same question. What WHP are you aiming for? I don't think you need 3.5" personally...

If you're considering a catalytic converter, that's going to be way worse than 3" vs 3.5".

What shuiend said about the back end of the v-band length is spot on BTW. Ever V-band I've used (ebay) warped when welded, so I had to surface them flat, which sucks big time. It was very short though, so heat of weld was going right into the machined flat surface that was about 1/4" away from the weld.
patsmx5 is offline  
Old 10-30-2015, 05:52 PM
  #4909  
Elite Member
iTrader: (37)
 
EO2K's Avatar
 
Join Date: Apr 2010
Location: Very NorCal
Posts: 10,441
Total Cats: 1,899
Default

Save the 3.5 for the truck
EO2K is offline  
Old 10-30-2015, 05:57 PM
  #4910  
SADFab Destructive Testing Engineer
Thread Starter
iTrader: (5)
 
aidandj's Avatar
 
Join Date: Apr 2014
Location: Beaverton, USA
Posts: 18,642
Total Cats: 1,866
Default

Cat is for every other year emissions. And only that.

Both sean and deezums had good luck with the v-bands linked. I will see how it goes for me.

Truck doesn't need any less restriction. The exhaust all exits the leaky headers and barely goes down the exhaust

Cool thing about the ford 9". It has a pinion carrier so I can replace the pinion bearings and seals without changing backlash.

Just need all the part numbers and find a shop to press the bearings on and off.
aidandj is offline  
Old 10-30-2015, 05:59 PM
  #4911  
Elite Member
iTrader: (3)
 
deezums's Avatar
 
Join Date: May 2014
Location: Kansas
Posts: 3,146
Total Cats: 201
Default

My miata were the first major welding project I ever did and I used the short cheap v-band collars. I didn't even clamp them down, face down on the concrete floor. They didn't warp, and I didn't need to surface them.

You won't be able to surface M/F v-bands, obviously. I tacked mine all around at high amps with lots of wire, no more than 1/4" at a time.
deezums is offline  
Old 10-30-2015, 06:00 PM
  #4912  
SADFab Destructive Testing Engineer
Thread Starter
iTrader: (5)
 
aidandj's Avatar
 
Join Date: Apr 2014
Location: Beaverton, USA
Posts: 18,642
Total Cats: 1,866
Default

So low amps, lots of filler. On my (soon to be picked up) new 1/2" steel welding table
aidandj is offline  
Old 10-30-2015, 06:06 PM
  #4913  
Elite Member
iTrader: (3)
 
deezums's Avatar
 
Join Date: May 2014
Location: Kansas
Posts: 3,146
Total Cats: 201
Default

FWIW you can bolt a steel rod to the thickest, stiffest table ever to weld on, it'll still curl up like a pretzel when you release the clamps if you weld a long straight bead down one side.

Milling out of cold rolled stock is similar, if you mill 1/4" into only one face of a square bar, it will flex and hard. If you skim both sides equal amounts, it stays much straighter in the end.

Go check youtube for old dudes straightening sheets of steel with a tiny torch applied in exactly the right location, cool ****.
deezums is offline  
Old 10-30-2015, 06:07 PM
  #4914  
SADFab Destructive Testing Engineer
Thread Starter
iTrader: (5)
 
aidandj's Avatar
 
Join Date: Apr 2014
Location: Beaverton, USA
Posts: 18,642
Total Cats: 1,866
Default

I can't bolt a m/f flange down. But I can keep from burning up the table and filling my welds with carbon
aidandj is offline  
Old 10-30-2015, 06:50 PM
  #4915  
SadFab CEO
iTrader: (3)
 
hi_im_sean's Avatar
 
Join Date: Sep 2012
Location: your mom's house phoenix, AZ
Posts: 4,560
Total Cats: 1,142
Default

Piping clamped in a vise with the v bands just haging out in the air. No warpage. I did 2 spots, about an 1", at a time, 180 degrees apart with 5-10 minutes in between.

They are short though, one of the reasons I made my own for my vband turbo outlet thingy.
hi_im_sean is offline  
Old 10-30-2015, 08:54 PM
  #4916  
SADFab Destructive Testing Engineer
Thread Starter
iTrader: (5)
 
aidandj's Avatar
 
Join Date: Apr 2014
Location: Beaverton, USA
Posts: 18,642
Total Cats: 1,866
Default

Well ****.


Attached Thumbnails Aidan's loose oily bunghole actually runs a track lap-80-nvzbawy_ef6e42e78f9851e7d93f9edec13eae43fcf0f305.jpg  
aidandj is offline  
Old 10-30-2015, 09:42 PM
  #4917  
SADFab Destructive Testing Engineer
Thread Starter
iTrader: (5)
 
aidandj's Avatar
 
Join Date: Apr 2014
Location: Beaverton, USA
Posts: 18,642
Total Cats: 1,866
Default

Pinion guide thingy in my ford rear end. Wonder how long its been broken.




Junkyard time.

Tires came in too. I can finally get the death traps of my car.

So sex

Attached Thumbnails Aidan's loose oily bunghole actually runs a track lap-o74613x.jpg   Aidan's loose oily bunghole actually runs a track lap-b0vzaxt.jpg   Aidan's loose oily bunghole actually runs a track lap-qiifevf.jpg  
aidandj is offline  
Old 10-31-2015, 08:23 AM
  #4918  
Senior Member
iTrader: (9)
 
Rallas's Avatar
 
Join Date: Oct 2006
Location: Lexington SC
Posts: 1,176
Total Cats: 35
Default

What tires did you end up getting?
Rallas is offline  
Old 10-31-2015, 09:51 AM
  #4919  
SADFab Destructive Testing Engineer
Thread Starter
iTrader: (5)
 
aidandj's Avatar
 
Join Date: Apr 2014
Location: Beaverton, USA
Posts: 18,642
Total Cats: 1,866
Default

Sentury UHP or something. Cheapest 205s on ebay. $186 to my door.
aidandj is offline  
Old 10-31-2015, 10:47 AM
  #4920  
Elite Member
iTrader: (3)
 
deezums's Avatar
 
Join Date: May 2014
Location: Kansas
Posts: 3,146
Total Cats: 201
Default

How do you get them for 186?
deezums is offline  


Quick Reply: Aidan's loose oily bunghole actually runs a track lap



All times are GMT -4. The time now is 02:27 AM.