Exhaust Manifold Cracked!
Exhaust Manifold Cracked!
So my exhaust manifold cracked, badly... I'm looking to get a new one, one that I can use a t3 flange on. trying to find the damn ihi turbos is a pain in the ass. The motor is the b6t, so I'm wondering if the b6 in the miata has the same bolt pattern for the exhaust, and if so where can I find and buy a turbo manifold for it? I'm thinking I want to switch to either a t25 or t28 turbo, and I would also like to use an external wastegate! Right now my little gtx is back on the road and making real good power with the ihi vj-5 on it... but I need it to spool faster, no power below 3700 rmp kinda sucks when your only doing 10psi!
- RX-7 Chris
- Posts: 7800
- Joined: Tue Oct 02, 2007 9:14
- Location: Colorado Springs
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Can you just have the existing manifold welded?
1984 RX-7 GSL-SE [size=84]My restomod project[/SIZE]
1964 Ford Galaxie 500XL flat black w/ white interior, 2 dr fastback, 390 thunderbird, C6 auto, 2500 rpm high stall converter, shift kit, AC, Holley 750 cfm
[size=100]RIP 1983 RX-7[/SIZE]
My Car Blog
- RX-7 Chris
- Posts: 7800
- Joined: Tue Oct 02, 2007 9:14
- Location: Colorado Springs
- Contact:
can't get much harder than welding cast iron.
1984 RX-7 GSL-SE [size=84]My restomod project[/SIZE]
1964 Ford Galaxie 500XL flat black w/ white interior, 2 dr fastback, 390 thunderbird, C6 auto, 2500 rpm high stall converter, shift kit, AC, Holley 750 cfm
[size=100]RIP 1983 RX-7[/SIZE]
My Car Blog
- RX-7 Chris
- Posts: 7800
- Joined: Tue Oct 02, 2007 9:14
- Location: Colorado Springs
- Contact:
I thought you might find this cool:
http://www.modified.com/projectcars/0009scc_mazda_323_gtx_part_3/index.html
http://www.modified.com/projectcars/0101scc_mazda_323_gtx_part_4/index.html
http://www.modified.com/projectcars/0009scc_mazda_323_gtx_part_3/index.html
http://www.modified.com/projectcars/0101scc_mazda_323_gtx_part_4/index.html
1984 RX-7 GSL-SE [size=84]My restomod project[/SIZE]
1964 Ford Galaxie 500XL flat black w/ white interior, 2 dr fastback, 390 thunderbird, C6 auto, 2500 rpm high stall converter, shift kit, AC, Holley 750 cfm
[size=100]RIP 1983 RX-7[/SIZE]
My Car Blog
- chickenwafer
- Posts: 2515
- Joined: Wed Mar 11, 2009 9:14
- Location: Greeley
You can weld cast just fine. You need the proper welder and rod, however, with the right amount of heat.
Tubular manifolds are the creme of the crop as they make more power and help turbo spool but they typically don't last as long as a cast manifold and crack much more often.
If you are handy with a welder just cut off the flange of your existing cast manifold and then you can build a manifold off that...or I'm sure you can find a flange somewhere.
Tubular manifolds are the creme of the crop as they make more power and help turbo spool but they typically don't last as long as a cast manifold and crack much more often.
If you are handy with a welder just cut off the flange of your existing cast manifold and then you can build a manifold off that...or I'm sure you can find a flange somewhere.
t25 and t28 are pretty old school anymore. shit if you really want low end power put a vj11 on there. they're good for up to 12psi in this altitude
you can weld cast, but you definitely want to get it super hot before you weld it. i believe nickel rod is the ticket, but im not sure if thats for welding cast to mild steel
you can weld cast, but you definitely want to get it super hot before you weld it. i believe nickel rod is the ticket, but im not sure if thats for welding cast to mild steel
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