my manifold cracked twice already?? - Page 3

miketurb0honda · 21st September 2007, 06:59 PM

man people just dont listen

Stainless Steel WILL crack even the good stuff!!!!!

its just the metal properties rate of expansion and contraction!!!!!

make a steel steam pipe one and get it hpc coated or heat warp it

=

NEVER CRACK !!!!

end of problem

Bigelboe · 21st September 2007, 08:17 PM

Quote:

Originally Posted by miketurb0honda

its just the metal properties rate of expansion and contraction!!!!!

Well its not just that actually, it has a lot to do with the fatigue properties of stainless steel aswell, its high rate of expansion feeds into its bad fatigue properties too.

With the selection of the right alloy, thickness and possibly some form of heat treatment Im sure you could get a stainless mani to last.

Even casting it would work pretty good

BTLF3D · 21st September 2007, 08:39 PM

you can buy cast SS manifolds allready :wink:

miketurb0honda · 21st September 2007, 08:44 PM

Quote:

Originally Posted by Bigelboe

Quote:

Originally Posted by miketurb0honda

its just the metal properties rate of expansion and contraction!!!!!

Well its not just that actually, it has a lot to do with the fatigue properties of stainless steel aswell, its high rate of expansion feeds into its bad fatigue properties too.

With the selection of the right alloy, thickness and possibly some form of heat treatment Im sure you could get a stainless mani to last.

Even casting it would work pretty good

yeah ok just for a nice shiny mani we'll heat treat and brace it and fuck around .

and in the end a you'll get a good mani

or make a steam pipe steel one

never worry about cracking

dont have to brace it

dont have to heat treat it

dont have to get a cast one

Coupe-R · 23rd September 2007, 10:23 PM

Mate used that logic. Had a SS manifold on his drift car. Kept cracking, and the nice shiny SS went a very rusty poo colour.

Then went to a mild steel manifold. Much more equal length looking too. Made the car SOUND BLOODY AWSOME! And no cracks either!

21st September 2007, 08:39 PM	#53 (permalink)
BTLF3D Senior Member 9,000rpm (S2000 Redline!) Join Date: Nov 2004 Posts: 6,955 Location: Levin	you can buy cast SS manifolds allready :wink: __________________ Civic Turbo \| 11.8 @ 123mph \| Built B18C \| GT35R \| 319wkw \| 19psi Profile Supreme Antennas Skunk2 M&H Slicks F B I Performance Beyond 2 NZ Performance Speedfactor WorkshopX Speedtech NZ 41.co.nz Collier Motor Engineers Morrel Motors

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21st September 2007, 06:59 PM	#51 (permalink)
miketurb0honda Senior Member 4,000rpm (Taxi Drag) Join Date: Sep 2006 Posts: 821 Location: Invercargill	man people just dont listen Stainless Steel WILL crack even the good stuff!!!!! its just the metal properties rate of expansion and contraction!!!!! make a steel steam pipe one and get it hpc coated or heat warp it = NEVER CRACK !!!! end of problem

23rd September 2007, 10:23 PM	#55 (permalink)
Coupe-R Senior Member 9,000rpm (S2000 Redline!) Join Date: Apr 2002 Posts: 6,965 Location: Tauranga	Mate used that logic. Had a SS manifold on his drift car. Kept cracking, and the nice shiny SS went a very rusty poo colour. Then went to a mild steel manifold. Much more equal length looking too. Made the car SOUND BLOODY AWSOME! And no cracks either!