Topic: 1/2" thick flanges? would you pay a little extra? (Read 11109 times)

weirtech · « **on:** March 30, 2009, 10:44:09 AM »

i'm going to be getting some 1/2" flanges soon and was just curious if anyone would be interested in them or be more inclined to buy 1/2" over my standard 3/8" thick flanges. obviously the price would be a bit more since they would be thicker, but also because they will most likely be waterjet cut instead of laser. i know a lot of people want the 1/2" so i'm stepping up to meet the demand, just want to gauge interest. they are probalby going to be around 50% more expensive than the 3/8".

dvst8r · « **Reply #1 on:** March 30, 2009, 10:53:56 AM »

Quote from: weirtech on March 30, 2009, 10:44:09 AM

i'm going to be getting some 1/2" flanges soon and was just curious if anyone would be interested in them or be more inclined to buy 1/2" over my standard 3/8" thick flanges. obviously the price would be a bit more since they would be thicker, but also because they will most likely be waterjet cut instead of laser. i know a lot of people want the 1/2" so i'm stepping up to meet the demand, just want to gauge interest. they are probalby going to be around 50% more expensive than the 3/8".

I have an upcoming cummins project, and 1/2" would be my only choice.

SDRAWKCAB · « **Reply #2 on:** March 30, 2009, 10:55:35 AM »

I only use 1/2 for head flanges.

patsmx5 · « **Reply #3 on:** March 30, 2009, 11:01:06 AM »

1/2", hell yeah! Might need a new intake flange from you if you're ready now.

slappynuts · « **Reply #4 on:** March 30, 2009, 11:08:26 AM »

I dont understand why people think they need 1/2" thick flanges. Unless you warp the shit out them when welding and need the extra meat to grind off.

dvst8r · « **Reply #5 on:** March 30, 2009, 11:25:14 AM »

Quote from: slappynuts on March 30, 2009, 11:08:26 AM

I dont understand why people think they need 1/2" thick flanges. Unless you warp the shit out them when welding and need the extra meat to grind off.

Well in the case of the cummins manifold I am building, @ 3/8" it will warp just under the 1800+ degrees F of egt. After all it is like a 4 ft long head.

slappynuts · « **Reply #6 on:** March 30, 2009, 11:43:48 AM »

Is there a large space between the bolts? Another thing that would be a plus in your case would be to leave more material between the ports.

mandrel-bends · « **Reply #7 on:** March 30, 2009, 11:51:06 AM »

Aaron - Most common 1/2" flanges we sell are turbo inlet/outlet flanges. We do some head flanges in 3/8 and some in 1/2 but people don't seem to care either way most of the time for those.

monty007 · « **Reply #8 on:** March 30, 2009, 12:35:57 PM »

I just did 2 manifolds using Weir's 3/8 head and turbo flanges - no problems for me. Is there anyway you can offer both? I think the reduced cost helps us DIY guys a lot more.

my $0.02

weirtech · « **Reply #9 on:** March 30, 2009, 01:04:12 PM »

oh, i'm not going to stop making the 3/8" flanges. just want to see if it will be worth while to do 1/2".

thanks for the input adam.

malichite · « **Reply #10 on:** March 30, 2009, 01:08:43 PM »

All the 3/8" flanges I have used have been just fine. I would probably continue to just order the 3/8 as I dont see a need for the thicker flanges for what I am doing and dont think I could justify paying 50% more for them. my .02

BoostForLife · « **Reply #11 on:** March 30, 2009, 01:09:12 PM »

I would rather buy 1/2" flanges for my first try at migging up a manifold, would have less of a chance of warping shit.

bigdaddyvtec · « **Reply #12 on:** March 30, 2009, 02:21:24 PM »

1/2" CnC here. Love it.

BoostForLife · « **Reply #13 on:** March 30, 2009, 02:37:08 PM »

Quote from: bigdaddyvtec on March 30, 2009, 02:21:24 PM

12" CnC here. Love it.

12" or 1/2"?

dvst8r · « **Reply #14 on:** March 30, 2009, 03:26:58 PM »

Quote from: slappynuts on March 30, 2009, 11:43:48 AM

Is there a large space between the bolts? Another thing that would be a plus in your case would be to leave more material between the ports.

Well it's a 4ft head with 6 ports, so yeah there is a fair bit of space, it will be a solid flange, just cut for ports and holes. It will be milled after it is welded. Oh and this isn't my first dance.

bigdaddyvtec · « **Reply #15 on:** March 30, 2009, 04:55:39 PM »

Quote from: BoostForLife on March 30, 2009, 02:37:08 PM

Quote from: bigdaddyvtec on March 30, 2009, 02:21:24 PM
12" CnC here. Love it.
12" or 1/2"?

Figure it out... Youcanhazcontext???

AND MY FINGERS ARE FAT

SirDragsAlot · « **Reply #16 on:** March 30, 2009, 09:10:20 PM »

half inch flanges seem kinda overkill, three eights look pretty beefy. i suppose if you can use half without any problems, why not? bigger is better.

HiProfile · « **Reply #17 on:** March 31, 2009, 12:00:32 AM »

Well I know the grass is always greener, but worst case you sit on them for a while. Its not like they take up space like a manifold. I'm guess you're just hoping to get a better quantity discount on the steel (not that I blame you)?

I've used 1/4" flanges for shit before :yes:, and managed no warpage, so 1/2" is overkill at least for Hondas IMO.

Random Hero · « **Reply #18 on:** March 31, 2009, 10:28:41 AM »

I need a set of LB7 Flanges and 1 6BT Flange

Passenger · « **Reply #19 on:** April 04, 2009, 11:43:50 AM »

Keep in mind you might start to get some warpage with laser cutting on 1/2" flanges, there is going to be much more heat input on the material.

And a cummins head flange is like 26.5" IIRC, I still use 1/2" flanges for them though.

TTC · « **Reply #20 on:** April 04, 2009, 01:14:50 PM »

My 3/8ths head flange warped on me fawk. Ground it down, warped again ...

danz · « **Reply #21 on:** April 04, 2009, 02:41:31 PM »

if you build it, they will come.

we are all cheap fucks.

chris · « **Reply #22 on:** April 04, 2009, 04:36:57 PM »

Nothing wrong trying to offer some other options

chris · « **Reply #23 on:** April 04, 2009, 04:37:31 PM »

Maybe do a group buy here

walter · « **Reply #24 on:** April 05, 2009, 09:03:55 PM »

Aaron you have a pm. $:-\$

turbob16hatch · « **Reply #25 on:** April 06, 2009, 04:26:38 AM »

Quote from: slappynuts on March 30, 2009, 11:08:26 AM

I dont understand why people think they need 1/2" thick flanges. Unless you warp the shit out them when welding and need the extra meat to grind off.

It isn't that they warp so much as looks for me. i like the looks of 1/2" and so do my customers.

aaron i talked to you about these before, nice your getting around to making the 1/2" flanges.

TTC · « **Reply #26 on:** April 12, 2009, 04:46:42 PM »

Could you make iintake adaptor flanges to go from lets say a toyota head to a honda manifold?

Corey · « **Reply #27 on:** April 15, 2009, 03:58:00 AM »

the only retards who think 1/2 is necessary for manifolds are honda-techers.

by the way all those sweet CNC'd 1/2" flanges are really only .450 thick because they loose .050 getting milled flat because they are made from crap hot rolled. ill stick with the 3/8 joints for 50% less

aaron just make sure they use the same steel on the 1/2". look how baller your 3/8" flanges welded tonight

CSaddict · « **Reply #28 on:** April 15, 2009, 06:30:18 AM »

Wow, that is some hot action Corey. Ill be down this weekend to pick up those flanges!

Passenger · « **Reply #29 on:** April 15, 2009, 11:30:55 AM »

Quote from: Corey on April 15, 2009, 03:58:00 AM

the only retards who think 1/2 is necessary for manifolds are honda-techers.

by the way all those sweet CNC'd 1/2" flanges are really only .450 thick because they loose .050 getting milled flat because they are made from crap hot rolled. ill stick with the 3/8 joints for 50% less

aaron just make sure they use the same steel on the 1/2". look how baller your 3/8" flanges welded tonight

Depends who you get them from, I mill mine from crs. I prefer milled flanges not only for aesthetics but the fact you can pocket the flange as well to help get rid of some heat. Really though, 3/8" laser cut flanges are fine.

News:

Author Topic: 1/2" thick flanges? would you pay a little extra? (Read 11109 times)

BoostForLife

BoostForLife

chris

chris