Walton Motorsport

I imagine the flex type will last a while, enough to get you going at least!

I bet you had great fun trying to plumb back those wastegates Its good to see that you did not just plumb it back in at a 90deg angle as most do. It makes a suprising difference. We know the pain with the bellows, theres a global shortage at the minute. If you were not aware, the flex pipe you have used is designed for side to side movement (good for an exhaust), whereas bellows types are designed for compression (when the pipework gets hot and expands). If you get a failure that will most likely be the reason.

Apologies for resurrecting an old thread but a few people have drawn my attention to it. My name is Andy and I work for Walton Motorsport, Ill reply below in a manner that isn’t intended to be a sales pitch as to not tread on anyone’s toes. But if any mods etc could contact me about being a trader that would be great as I have tried in the past but not got hold of anyone. First thing I would like to address is fitment issues with our JZ Manifolds, originally our JZ manifolds was based around 2JZ engine conversions, (such as S-chassis) and JZX and designed to suit up to a T3 frame size (so Garrett G35, GTX35 sized turbos). A couple of guys bought this manifold for their Supras and it turned out that they didn’t fit, due to the lower front bonnet height of the supra. This prompted the “Type B” manifold (Original is the Type A), and we swopped those guys to the Type B fitment. The Type B also fits larger turbos than the Type A. The Type A features a tuned primary pipe length to give a slightly faster spool. Whereas due to Turbo location on the Type B the lengths are not quite as optimal. The Type B positions is close to the Whifbitz and SRD Manifolds. In reference to user mharvey – I’m not sure which variation of manifold you had (if you provided details we can check) however the likeliness is that it was a “small port” manifold, which is why the 60mm wastegate would not fit. The large port manifolds are ideal for 60mm wastegates, and in Type B fitment will support a 4” Downpipe, although in our experience a well designed 3.5” will easily flow 1000bhp+ In reference to user AC93 – I’m sorry you have had such a bad experience, if we had known at the time we would have changed you onto a Type B. But do in contact with us and we will see if we can help you out. In terms of cheap vs expensive tubular manifolds. I will give you a quick overview. But I can go into more detail if anyone wants me to. If you ignore fitment and physical pipe layout, Wastegate port placement is a big one, you need to get as much gas to flow down the port as possible but without introducing a load of turbulence into the collector which will affect turbo performance. The reason people have success on cheap manifolds is because they are generally running older or less efficient turbos that do not require as much control as something like the G-Series from Garrett. The other issue is internal build quality, cheaper manifolds have all sorts of horrors inside that can fracture off with the heat and vibrations which then travel through the turbo potentially causing damage. So in summary a cheap manifold can well get a respectable power figure, its more of a control and longevity issue. More than happy to answer anyones questions about manifolds in general