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the term 'bolt-on' is quite a slippery term apparently.. Its not as clear-cut as one would like to think. When I think of 'bolt-on', I am reminded of what it takes to put a bolt on - as in putting a bolt into a hole and using simple hand tools to install it. No welding, no machining, no specialized tools required. After speaking with Rich, it seemed that his interpretation of 'bolt-on' is not the same as mine. The comressor housing of this turbocharger has only pipe flanges, not bolt flanges like our stock turbos. We have inlet flanges (the two-bolt flange) that we install onto the turbo so factory piping can be used. The oulet of the compressor is not a bolt flange and we do not convert it. This particular set of turbos was not supplied with a 90-degree elbow coupler for the driver's side nor the 4" section of coupling for the passenger side. With these two couplers, it is all a 'bolt-on' setup in terms of the piping. Those couplers are now provided with the kit, but can be picked up at any Napa store for under $10 for the two pieces, including clamps. BTW, these couplers are made of rubber, produced by Gates hoses - our opinion is that if Nissan's 14 year old twinturbo Z's used rubber couplers for the OEM specification, there wont be any problems using brand new rubber couplers with the turbos. I believe there was a slight clocking issue with the turbochargers, at least Rich said he had to clock them a little. I personally put these kits together myself and I have an engine on a stand which I use for clocking and fitment purposes before they are put in the box and sent out. There's no guessing to the orientation of the housings and cartridges - you simply have to testfit them, which was done. Additionally, the wastegate actuators that come with these turbos no longer fit when you reclock the turbos for the Z. I literally have to hand-build the brackets for both turbos, which is also very specific to the clocking of the turbos, and these brackets are built after the clocking has been done. When I build them I am sure to set the actuators with the same preload (using a pressure guage and an air-tip), and then connect both actuators to the same line and ensure they both open at the same time and pressure. The actuators on these turbos are adjustable from the factory, but the rods have to be lengthened in order for the actuators to fit in the appropriate locations so as not to require any grinding. There have been 8 sets of these turbos sold and although it is stated on our website that there is some minor fabrication required for installation, that is actually an overstatement for the last 5 sets that have gone out. There was another member who posted a couple months ago that was himmming and humming about the 'bolt-on'-ability of these turbos and he addressed a few things of which I have added into the process of developing these turbos to fit the Z32. Each set I produce usually takes between 5-6 hours to make and I like for my work to speak for itself - I could probably do it quicker and the finished product would work without any problems, but the last thing I want is for someone to come here raging about how shoddy my work is with my wood router, LOL. :) Cliffnotes:
Yes, they are bolt-on, meaning that nothing other than simple hand tools are required to install them. Currently there is no fabrication required and no additional components need to be purchased for their installation. Our Stage1 and Stage2 turbochargers are also bolt-on in this sense.
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Are you an enthusiast? If you are out to describe the truth, leave elegance to the tailor.
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