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Blox (lol) has a big tube N/A titanium header that they try to sell for right around $2500 I think. I would never in my life throw even close to that much money on Blox parts.
lol. sadly their branding and image is kind of a fail... retail of 4 cylinder titanium headers at $2500 is correct. go ask any American fabbers how much they can make it for. you will notice titanium has gotten a lot more popular in the last 2 years. lot of DIY people are attempting to make use of it.
That header is super sexy. I love the pie-cut work seen here. I know that this is super picky, but you really need to get the O2 bung in the collector to sample all four cylinders instead of only two.
That header is super sexy. I love the pie-cut work seen here. I know that this is super picky, but you really need to get the O2 bung in the collector to sample all four cylinders instead of only two.
heheh. yeah i didn't supervise the production of this particular header.... this is likely the last one we make of this config. on to newer and improved designs.
The problem with doing an o2 on the collector will be clearance issues as this is a long tube header and the collector is just about under the sub frame. It could be done but would probably have to come off the side and be a very tight fit in the exhaust tunnel.
Any thoughts on how much the O2 bung placement would affect the tuning or datalogging process? I haven't actually considered that before, I think most N/A headers I've seen and used have the same placement as in exgr's original post.
personally i don't think it's a big deal at all. often time test pipes right behind this have o2 bung. an optimized ecu map doesn't really need o2 feedback... and so on. on my stainless steel offerings usually instead of the bung being on top i usually do 45 deg angle...
All 4 cylinders should have minimal variance between them anyways. Unless you have 4 widebands reading each runner and adjusting individual fuel trim I don't see a need for a centralized o2 bung to read all 4. You can also verify by reading the plugs. A wideband o2 is really only an average of the 4 or in this case 2 cylinders.
All 4 cylinders should have minimal variance between them anyways. Unless you have 4 widebands reading each runner and adjusting individual fuel trim I don't see a need for a centralized o2 bung to read all 4. You can also verify by reading the plugs. A wideband o2 is really only an average of the 4 or in this case 2 cylinders.
True, that was my logic as well. Just wasn't something I had really considered before, so was curious what people thought.
Anyway, back on topic. The manifold looks absolutely beautiful, and is a welcome addition in the market as other note worthy manufacturers are starting to pull out of the B series market (especially N/A),
02-12-2019, 07:47 AM
exgr's B18/B20 large tube header titanium header.. Sexy, ain't it?
