The GroundZero manifold is very well built and is a great design. Too bad it has to sit in my room for a lil while waiting for my new turbo and downpipe flanges...turtl631 wrote:Yep, IAP is definitely not the best. The phatka-t manifolds seem very solid, the group buy ones from KA-T.org are likely very good as well. IAP is just a middle of the road tubular, definitely not in the same ballpark as somethign like Full-Race.
I was simply saying IAP because I was looking at their turbo kit, and as far as their manifolds compare to other eBay manifolds, I'd say its the "best"Jeff240sx wrote:I think IAP good, but calling it the best shows that there are a lot of manifolds you haven't looked at. -Jeff
Precision makes alot of nice everything. I had a RevHard, and have a question for you. How do or did you prevent bolts from spitting out? I lost 3 wastegate bolts, and 4 turbine mount bolts (over 7 different incidents), and couldn't ever figure out how to keep them in the manifold, and prevent the blown gasket.-JeffStructure240sx wrote:i use a revhard manifold, just like what you are looking at.
i do love that it is cast iron and strong as hell. as long as you do a few things to prep it for heat expansion. i have never had a problem
what does give you a problem with the revhard is turbo selection. it requires the use of an on-center turbine to properly clear the brake master cylinder. you can make some tangentials work but clearance will be a huge issue
precision makes a nice line of on-center turbos, i'm currently using the pt61 right now.
I'm with Jeff here. I was looking at the PB mani, as well as the GZ Motorsports mani and the difference is in the grade of stainless. 321 is better for high head applications. It is stronger than 304 at those high temperatures, but it is also more expensive. That's why most people use 304. I've pretty much decided I'm going with the PB mani. Oh, and it's actually $150, but I'm sure they can knock a little off the price, especially if you're buying a few more things. Or maybe they'll run a GB on them as a intro, we'll see.Jeff240sx wrote: The difference, and the reason I'm more than willing to pay a $100 premium, is that Peak Boost is made of 321 stainless, and not 304 stainless.
Casting stainless is a pretty rare thing.. so I doubt it is. But I'm not a metallurgist. I just think if someone would be the first to cast SS manifolds, it wouldn't be aforementioned no-name ebay company.DRIFTEADOR wrote:Looks like a good deal but whats with "TOP and BOTTOM setups", is that possible?
and does this mean it's ss cast,
Now it's $200. Groundzero's mani is $695 and the PB Mani is $899.upSLIDEdown wrote:Oh, and it's actually $150, but I'm sure they can knock a little off the price, especially if you're buying a few more things. Or maybe they'll run a GB on them as a intro, we'll see.