Post by
mtcookson »
https://forums.nicoclub.com/mtcookson-u3042.html
Mon Jan 28, 2008 7:37 am
Like Cody said, feel free to email me. I absolutely love the VG30E and could give you tons of info on it. I also own an M30 as well and have swapped a 90-96 300ZX 5-speed into it so if you're thinking about going the 5-speed route I can help you out there as well.
As far as the VG itself, for NA power you'll definitely want cams. I'd personally stay away from the Schneider cams offered at MSA (Motorsport Auto - The Z Store). There have been some people recently finding they are having major quality control issues (Schneider, not MSA). Basically the cams are in the specs they're supposed to be (durations are off, lift isn't right, etc.) I'd consider going the JWT route or possibly Isky. I've heard some good things about Isky in the past.
Boring wise, there isn't much to gain there in the VG30. There isn't much material for boring so you want to avoid that. The VG33 actually has a slightly different casting moving the oil/coolant passages further from the bore to allow the larger 91.5 mm bore giving the 3.3 liters. This wouldn't be attainable in the VG30.
Boost is the absolute best way to get power of the VG30E. The member here by the name of Satan (mentioned above) has made a turbo manifold for the Z31 that has actually been used in an M30 with good success. The downside to that setup is that you have to remove the A/C as that is where the turbo gets located.
The VG is a wonderful engine as far as strength is concerned. They are quite reliable and handle a good deal of power on the stock internals. They are also easy and cheap to modify compared to other engines. I can keep going on about it so if you're interested just let me know.
As far as the 5-speed goes I've found the magic setup for the 90-96 300ZX (Z32) 5-speed to be a 89-91 Maxima flywheel, Maxima or 84-86 300ZX Turbo clutch kit (Z clutch route is good for higher capacity clutches), Z32 throw out bearing, and Z32 or M30 starter.
The stock auto transmission mount bolts right to the Z32 5-speed. You will have to do some slight modifications to the transmission tunnel for the 5-speed to clear. There is some metal in the tunnel that hits the plate above the shift assembly, you just simply cut it out or beat it in a tiny bit with a hammer and the transmission will fit fine. From there you have a couple options for the shift linkage, you can use the stock Z32 shift linkage, which will require slightly more material to be removed from the same area in the tunnel and you'll need a rear mount to hold of the linkage (a spring or similar), or you can use the Mazworx solid bracket. I'm using the Mazworx bracket but one thing you need to be aware of about it is that if your transmission is excessively noisy (worn out) the noise does get transmitted into the cabin rather well. The shift feel is great though. For a quite ride but with the 5-speed, I recommend just using the Z32 linkage.
You'll need a custom driveshaft as well. The differential flange is the same between the NA Z32 and the M30. If you were using stock dimension Z32 u-joints front and back the length of the shaft from center to center of the u-joint ends is 47.25 inches. If you can have a shaft made with serviceable u-joints definitely have that done as the stock ones are not making for a headache when they go bad. Be sure to note that using different u-joints might throw off the measurement but the driveshaft shop should know how to make up for that if that is the case.
Suspension wise I know quite a few guys have used 240SX suspension parts. I never got that far on mine but can find the info for you. I believe the front does require the use of 240SX suspension arms but I think the rear only requires some minor drilling if memory serves. Let me know if you'd be interested in going that route and I'll get you the info needed.