Guest 240SBB Posted May 24, 2003 Share Posted May 24, 2003 Okay . . . I'm just thinking here: If I was to drop a Buick 455 (slightly modded) and a TH400 (short shaft) into a 240Z, what would I need to do to the chassis to keep it straight? Which Z rear end would hold up? Also, would there be room for a Gear Vender's overdrive unit? Quote Link to comment Share on other sites More sharing options...
CruxGNZ Posted May 24, 2003 Share Posted May 24, 2003 Now you made me smile . Don't think about it, do it! Anywho, you should take some measurements of the engine first though before you go all nutty with this. I would say roll cage and sub frame connectors should keep it from twisting. The R200 should hold up, but there is always the R230. As for the other stuff !M! Quote Link to comment Share on other sites More sharing options...
Guest 240SBB Posted May 24, 2003 Share Posted May 24, 2003 Yeah, I figured you'd notice this! A Buick 455 should fit (it's not as big as a BBChevy), assuming I can figure out how to mount it. I'm not sure about the oil pan though, and my only alternative might be a custom one if an OEM doesn't work. What year(s) can I find a R230? As for a roll cage, could I just bolt one to the floor? Where are the key points to mount one? I'm not really familiar with the structural design of the unibody (don't even have a 240 yet.) Did you ever get your GN turbo installed? I'd like to see some pictures when it's done. That should be a sweet ride! Quote Link to comment Share on other sites More sharing options...
CruxGNZ Posted May 25, 2003 Share Posted May 25, 2003 Just a thought, my buddy has a complete 455 sitting on an engine stand if you need measurements. The R230 came in the Infinity Q45 and the late model 300ZX (90-96) in 3.70 and 3.54 ratios I believe. If you want, just do a search on "R230" and you will come up with enough information to keep you busy for a while . It all depends on what you want, LSD, VLSD, or an open diff., and what gears you want. Quite a few combinations to get you what you want. As for the cage install, look here: http://www.hybridz.org/phpBB2/viewtopic.php?t=7813&highlight=roll+cage+mounting There is some good information there for ya. Just remember, the search button is like GOLD. My GN engine install is coming along, the only thing I need now is an intercooler and I'm set to drop it in. I wanted to get all the parts I needed before I droped the engine in so I could still drive it around and enjoy the nice upgraded suspension, which by the way turns this car like nothing else I've driven before, makes for some very spirited driving . Quote Link to comment Share on other sites More sharing options...
Guest 240hybrid Posted May 26, 2003 Share Posted May 26, 2003 MSA sells a 6 point that really seemed to stiffen up my Z a good bit if you dont want to custom make a cage. I welded my 6 point to 6x6 3/16" steel plates and welded those to the new floor boards and fender wells. I used a 12 ton press to bend the plates. It can be seen in my personnal album. I would like to do subframes in the future too. I have heard of some welding 2x3 rectangular steel into the radiator crossmember to stiffen things up too. I havent seen anyone do it yet, but thought of this idea to really stiffen a Z up. Take a 2x3 3/16" rectangular steel tube and cut off one side of the 3 inch sections making it a 2x3 U and notch it around the front crossmember mounts that hold the rack and pinion and suspension so not to interfer. Then slide the 2x3 U over the existing frame rail in the Z and weld the hell out of it. That seems like it would really stiffen up a car along with everything else mentioned. Just a thought. Chase Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted June 10, 2003 Share Posted June 10, 2003 hehe, a 455ci iron lump... hope your not autocrossing. Too heavy and in the WRONG place, while the installation wont be bad (no electronics) the modification the chassis is heavy because now youve got like a 70/30 weight ratio hehe, well thats over-exaggerated but i hope you see my point... Good luck however if you do decide for it... oh yea, while aluminum heads are great for weight reduction, reliability wise they are a pain in the ass. Aluminum under all that heat, stress and torque... baaaaaad mixture especially since aluminum expands MUCH more than steel and iron (but you already knew that ) -Keenan keedak = mix of first three First name letters and last 3 Last name letters... hehe still sounds stupid... Quote Link to comment Share on other sites More sharing options...
SleeperZ Posted June 10, 2003 Share Posted June 10, 2003 hehe' date=' a 455ci iron lump... hope your not autocrossing. Too heavy and in the WRONG place, while the installation wont be bad (no electronics) the modification the chassis is heavy because now youve got like a 70/30 weight ratio hehe, well thats over-exaggerated but i hope you see my point... Good luck however if you do decide for it... oh yea, while aluminum heads are great for weight reduction, reliability wise they are a pain in the ass. Aluminum under all that heat, stress and torque... baaaaaad mixture especially since aluminum expands MUCH more than steel and iron (but you already knew that ) -Keenan keedak = mix of first three First name letters and last 3 Last name letters... hehe still sounds stupid...[/quote'] The Nissan engines are reliable with iron block and aluminum head. Why is a V8 not reliable in the same configuration? Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted June 11, 2003 Share Posted June 11, 2003 The Nissan engines are reliable with iron block and aluminum head. Why is a V8 not reliable in the same configuration? I know nissan engines are reliable, but they also put out much less horsepower/torque and have better flow/cooling. I opted out of putting edelbrock heads on my 442 because of the risk of something going wrong. BTW i was talking about BB GM motors, not Nissan. Quote Link to comment Share on other sites More sharing options...
SleeperZ Posted June 11, 2003 Share Posted June 11, 2003 I know nissan engines are reliable, but they also put out much less horsepower/torque and have better flow/cooling. I opted out of putting edelbrock heads on my 442 because of the risk of something going wrong. BTW i was talking about BB GM motors, not Nissan. The way you said it sounded like it was just an iron/aluminum thing. I know we are not supposed to talk about hp/cid, but my turbo motor, with less than half the displacement of a big block, puts out 300hp/300tq - that's got to be seeing similar internal stresses....maybe you are right about coolant flow differences though. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.