OlderThanMe Posted August 18, 2007 Share Posted August 18, 2007 Well I am looking at designs for VH manifolds for my engine. Some VH ITB's being done up in the UK. under-ITB runners on left and ITB's done on right. another view: a third view: R390 twin turbo: Note pressure equalizer tube at rear of engine(closest to photographer) Of course all of these later ones are done by racing teams with backing by $$$$$$$$$ or by Nissan. Neither of which do I have. I'll just look and learn. What I do have is plenty of time to work out a design and access to SolidWorks. I have access to a CNC Plasma table(for relatively cheap) to cut out any exhaust manifold flanges that I may need. For exhaust I may end up doing a front or side mount. A side mount could locate the turbo in/around the battery box area. I'd really like to do a top mount but don't want to go more than 4" higher than the stock hood level which I don't think will be possible with a top mount HX50 sized turbo. A GT4202R seems like it would be perfectly sized for the VH. That is if the HX50 map doesn't turn out to be close enough of a match. I'll be posting updates and initial measurements from my intake and exhaust manifold design soon. OTM Quote Link to comment Share on other sites More sharing options...
OlderThanMe Posted August 22, 2007 Author Share Posted August 22, 2007 I'm giddy. I may just do 2 TB's and concentrate on THIS but without the stock bottom runners: Who needs hood clearance anyway? Quote Link to comment Share on other sites More sharing options...
bschiltz Posted August 23, 2007 Share Posted August 23, 2007 Are you thinking of going TT? Either way, that looks slick. How much of a difference does the equalizer tube make? Quote Link to comment Share on other sites More sharing options...
OlderThanMe Posted August 23, 2007 Author Share Posted August 23, 2007 Well I'm not doing twin turbos because the cost would be too high. If I could find a good pair of turbos it might happen but I'm leaning toward a single HX50. The same plenum could be used for single or twins. Under that kind of plenum you could fit an entire huge turbo. The VH block is way down under there. Just about where the bellhousing mounts. Quote Link to comment Share on other sites More sharing options...
sweetleaf Posted August 23, 2007 Share Posted August 23, 2007 I don't think you would want to put the turbo directly under the intake. Think about the heat coming off that beast. Quote Link to comment Share on other sites More sharing options...
OlderThanMe Posted August 23, 2007 Author Share Posted August 23, 2007 Heat can probably be dealt with... There are a couple options that I have for turbo mounting so I'll see what I have to deal with when I have the engine mocked up in the engine bay. Quote Link to comment Share on other sites More sharing options...
proxlamus© Posted August 27, 2007 Share Posted August 27, 2007 ohh im keeping an eye on this. Im considering a VH or 1UZ tough decision Quote Link to comment Share on other sites More sharing options...
260DET Posted August 29, 2007 Share Posted August 29, 2007 Single turbo should be good, that looks like a great motor to mod, excellent project. Quote Link to comment Share on other sites More sharing options...
Hodo Posted September 1, 2007 Share Posted September 1, 2007 I am currently doing a swap myself on a Z32 with a VH45DE. I have found the Z1 modified twin throttlebodies for the 300ZX TT will work for the VH45DE if you make the same type of intake manifold as on the VG30.... except for a V8. The larger throttlebodies would be about a 25-30% increase in airflow over stock. This and matted with 555cc Injectors, and a good equal length header setup you could make good power all motor. But I am still tring to keep my Z looking stock on the outside and streetable daily driver type of car. Not a track star. Just something that can run down a Vette without a turbo. Quote Link to comment Share on other sites More sharing options...
Boosted1503 Posted September 7, 2007 Share Posted September 7, 2007 http://rossmachineracing.com/plenumextrusions.html How about something like this? the website has all kinds of things to build an intake mani and what not...even has throttlebody adapters and plates... Quote Link to comment Share on other sites More sharing options...
Wedge Posted September 9, 2007 Share Posted September 9, 2007 ohh im keeping an eye on this. Im considering a VH or 1UZ tough decision 1UZ has way more aftermarket then VH, just some food for thoughts . Quote Link to comment Share on other sites More sharing options...
OlderThanMe Posted December 20, 2007 Author Share Posted December 20, 2007 Wedge: Thus starts the VH45 aftermarket...now. Here is the base of my exhaust header design that I sketched up this morning...Dimensionally correct. Hopefully I'll be adding tubes soon. Quote Link to comment Share on other sites More sharing options...
OlderThanMe Posted December 21, 2007 Author Share Posted December 21, 2007 OK so I am just learning more about my version of solidworks... There were a BUNCH of things I didn't learn in my Solidworks class at college... This is just practice and it will be completely re-done...I was up until WAY too early this morning working on this. I will need more room to clear steering stuff I believe. Quote Link to comment Share on other sites More sharing options...
Wedge Posted December 24, 2007 Share Posted December 24, 2007 Damn i am pretty impressed by those designs hehe . Even if their is less Aftermarket their is no price for the cool factor of custom made stuff . Quote Link to comment Share on other sites More sharing options...
OlderThanMe Posted December 24, 2007 Author Share Posted December 24, 2007 At this point I am not sure if I am going to use twin turbos or a single Holset HX50. From what I have seen/calculated, the HX50 should hit boost hard around 3200~ish(1 bar by 2400~ish) RPMs on the VH45 and run until no end. Quote Link to comment Share on other sites More sharing options...
Wedge Posted December 26, 2007 Share Posted December 26, 2007 Wow Full bosst at ~ 3500 rpm that is deadly ! Hope everything you plan works . Quote Link to comment Share on other sites More sharing options...
John Dixon Posted December 30, 2007 Share Posted December 30, 2007 That's my car at the top of the thread! Have both sets of throttle bodies mounted now and am starting to knock up the air box. Going to make one large box that covers both banks which will then allow me to try lengths (from the face of the body) of 15mm to about 500mm on the dyno and see what works best. The exhaust manifolds are being made at the minute, 41mm ID primaries, 4-1 on each side with 1m primary lengths, should be tuned for ~5k rpm with my setup. Will post up some pics when I have them. Attached s/s is hemholtz calc for my engine as a rough guide. Quote Link to comment Share on other sites More sharing options...
John Dixon Posted December 30, 2007 Share Posted December 30, 2007 Spreadsheet: Won't attach!! Quote Link to comment Share on other sites More sharing options...
John Dixon Posted December 30, 2007 Share Posted December 30, 2007 As pdf! Hemholtz.pdf Quote Link to comment Share on other sites More sharing options...
hoov100 Posted December 30, 2007 Share Posted December 30, 2007 has anyone tried making a set of 180* style headers for the vh? Quote Link to comment Share on other sites More sharing options...
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