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Last Post 21 Jan 2012 11:07 PM by  mlane350z
Build a 350z for BSP
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solo-x
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19 Dec 2011 11:33 PM

    What would you start with, how would you build it, and why would you make those choices? Would it be fast enough to win if driven well? How much work to fit 315s square? What are the weak spots and "must have" items besides a diff?

    <- likes him some Nissan v6 engine wail

    mlane350z
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    19 Dec 2011 11:39 PM
    03 Base w/ HR motor. 315's aren't a problem in back, but are a tight squeeze in front. You can do it, but you will likely need to flare the fender slightly. Main weakness is weight, width, and SP legal front camber. It is something like 6-7 inches wider in the rear than an E36 M3. Figure 2925-2950lb give or take with an HR motor in full BSP trim. Properly driven it can contend in my opinion, but I'm a bit biased.
    jix13
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    20 Dec 2011 01:26 AM
    Would an HR swap be legal in BSP? I heard the motor mounts have to be moved or modified, which I'm not sure is legal. Any idea how the HR compares in weight vs. the DE?
    christoc
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    20 Dec 2011 02:14 AM
    If you're serious about a build, I am likely parting out my 2004 (66k miles) that I started prepping for BSP, though I could be talked into selling it as a whole before doing so. Located in Half Moon Bay, CA

    http://www.project350z.com for more info on the car.

    List of mods at http://www.project350z.com/Articles/itemId/534/Autocross-350z-Modifications-List.aspx (stereo/speakers are back in right now, easy to pull)

    I currently fit 305s all the way around, plan was to go to 315s, fronts right now have a 10mm spacer (I think that's the size) to fit, 315s might require a bit more, haven't had any fender issues. As is the car can carry all 4 tires, jack, tools, to/from a local autocross, I didn't around to getting a trailer to tow (hitch installed though).

    I weighed the car back in February, car was at 3062lbs, since then I have put the stereo back in, mounted a trailer hitch on the back, and replaced some leaky exhaust, probably has gone up a few pounds, but in SP trim could definitely come down quite a bit more.

    The only reason I am considering it is that I simply don't have the budget for 2012 to finish the build (differential, seats, brakes) and compete, I have to take a year or two off, spend time working and with the family, then get back into things.
    mlane350z
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    20 Dec 2011 07:33 AM
    I haven't found anyone who actually completed the HR swap into DE. I'm not entirely sure what needs to be done to get it to fruition. I would think a full SP legal HR motor on E85, etc could make 315-320whp, though. TQ would be a bit lower than a similarly prepped early 03-04 model. The higher HR redline gives you a few more mph to play with in second as well. There are some known faults in the slave cylinder hydraulics that can come about in inopportune times.
    solo-x
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    20 Dec 2011 08:19 AM
    Hey Chris, I'm just in the silly season investigation phase right now. I want need a daily driver with a bit more character than my 95 Accord and the 350z/370z is intriguing me. Thinking further down the road, when I fully retire the Teg, having a car that I could build into a competitive SP car would be a bonus.
    John V
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    20 Dec 2011 09:02 AM
    E46s make great daily drivers :)
    AutoX Z
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    20 Dec 2011 09:19 AM
    The 370z makes a great CS car and I will continue to lobby to get it moved from ASP to BSP over the next few years.
    scardeal
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    20 Dec 2011 09:47 AM
    It's certainly competitive and fun on the local level. I don't know about how it would do at Nats, though.

    It's narrower and has similar power to a C4 Vette, which has won BSP in the past (before the Evo).
    jix13
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    20 Dec 2011 01:28 PM
    Chris Hammond wrote:
    If you're serious about a build, I am likely parting out my 2004 (66k miles) that I started prepping for BSP, though I could be talked into selling it as a whole before doing so. Located in Half Moon Bay, CA

    I'd be highly interested in your wheels/tires if and when you decide to part.

    christoc
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    20 Dec 2011 11:49 PM
    I have no intention of actually selling the car as is. That being said, if someone wants it as is, I'll gladly sell it. I plan to convert back to OEM for the most part, may leave the parts on the shelf and just continue to daily drive it, though I might be talked into selling the parts. As of right now I'm up in the air on what to do with everything.

    Wheels are available shoot me an email for more info christoc - gmail

    As for the OP, a 350z is darn hard to beat as a daily driver, the only thing I could imagine replacing it would be my old Z06 :D
    mlane350z
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    21 Dec 2011 07:53 AM
    Chris I sent you an email about a part. Thanks.
    solo-x
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    21 Dec 2011 09:07 AM
    John V wrote:
    E46s make great daily drivers :)

    I'm afraid of what the Teg will do to me if I bring a BMW home. :)

    John V
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    21 Dec 2011 09:33 AM
    Step 1, sell Integra.

    You proved at nats this year that you're really a RWD guy, so buy something competitive and start winning.
    GlennAustin
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    21 Dec 2011 10:21 PM
    scardeal wrote:
    It's certainly competitive and fun on the local level. I don't know about how it would do at Nats, though.

    It's narrower and has similar power to a C4 Vette, which has won BSP in the past (before the Evo).

    A 2005 350Z trophied (last trophy position, but still) against the Evos at Nationals as well (2008?) with just the "original" DE engine (not even the "RevUp").

    jix13
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    22 Dec 2011 12:51 AM

    GlennAustin wrote:

    A 2005 350Z trophied (last trophy position, but still) against the Evos at Nationals as well (2008?) with just the "original" DE engine (not even the "RevUp").

    I think the DE and RevUp would be a toss up: 287hp/274tq vs 300hp/260tq. Even the HR with 306hp/268tq can't match the original DE in torque. Considering the 03-05 base models are the lightest, they may still be the car to have barring engine swaps. The lower rev limit hurts though.

    AutoX Z
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    22 Dec 2011 09:03 AM
    jix13 wrote:

    GlennAustin wrote:

    A 2005 350Z trophied (last trophy position, but still) against the Evos at Nationals as well (2008?) with just the "original" DE engine (not even the "RevUp").

    I think the DE and RevUp would be a toss up: 287hp/274tq vs 300hp/260tq. Even the HR with 306hp/268tq can't match the original DE in torque. Considering the 03-05 base models are the lightest, they may still be the car to have barring engine swaps. The lower rev limit hurts though.

    Those are all the factory power levels. You need to consider the potential for each engine to increase their output using SP modifications. From what I've seen the DE's are pretty limited in that respect.

    mlane350z
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    10 Jan 2012 03:09 PM
    ^In full blown, street prepared form a DE on E85 is probably in the 290.....maybe 295whp. Torque will be strong....close to 280wtq.
    jix13
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    11 Jan 2012 08:52 PM
    Has anyone considered swapping the 3.3 final drive gears from the automatic into a manual Z? With a 315/30/18 tire and the 3.54 gears, 2nd tops out at 61mph (65mph if you raise the rev limiter to 7100). Swapping the 3.3 gears gives you 65mph (70mph@7100). Is 5mph worth the loss in acceleration? With the SP intake/exhaust mods, power is made well up to 7K.
    mlane350z
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    11 Jan 2012 09:04 PM
    I run my DE to 7400 on 285's. I wouldn't recommend it, but its survived thus far. I still think the 3.5FD is going to have the advantage the majority of the time.
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