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Has Anyone built a full-tube chassis v8 240z?


Guest tt350

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tt350,

This project sound like it could be a lot of fun, or a nightmare. You should try to find Rod millan. He is in cal. might not be close but i am sure it would be a worth will trip. He is the man who made the pikes peak celica's and trucks. His brother, Steve raced 300zx's with imsa gtp engines in them. If i were in your boat the first thing i would do is find a trans set up that will work with the power you want. If you are going to want to do 4 wheel drive now is the time to plan for it. If you dont then when the time comes you will have to re build the whole front end of your car. The problem with most of the 4 x 4 set ups is that they put the engine forward and high. You dont want this. You need the front diff and drive shafts to be in front of the engine, not under it. The only cars i can think of that had this set up are the for escort cosworth (europe only, hughly expensive trans set up) Millans pikes peak car/truck, and a couple of the old style DTM cars. The Opel calabra come to mind. This had a interesting set up where the centre diff was behind the engine and it ran two drive shafts forward on the side of the engine block. One for each wheel.

 

I was reading a car mag about a 4 x 4 holden thats coming out this year. It is said that it is using a set up that was designed for a new caddy model ( yet to be released) that sounds like the calibra set up. I know its designed for the LS1 to bolt up to it . It might pay to wait 4-6 months and find out whats what. Even if have to buy a whole brand new car its cheeper than the race units.

 

Anyway, Have a look around at different 4 x 4 set ups. There is a lot to learn.

 

Cheers

 

Douglas

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Guest tt350

Ya, I have decided to drop the AWD (YAY!)

 

I have done this after a whole night of research yesterday, and there is too much money involved, and with enough meat in the back, I think it will be fine.

 

Thanks ZROSSA for that post.

 

I am 19, and I autoX'd a coupla of times. I have however owned a BMW m3 and road raced it. Alot. To the point of destruction. lol. (Didnt crash, blew the engine and decided to sell it).

 

By the way, GT3 is for ricers man, dont diss me alright?

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Glad I could help. Anything can be done if your pockets are deep enough.

 

There are lots of ways around the chassis issues as well. You dont have to build great big tube frames. Try to do some research on some of the older race cars like the early lotus' (6 - 28 i think) and other cars from that era. They all run space frame chassis with a metel skin as a structural member. You could kind of reverse enginer this in to the z chassis using the original chassis as the structural skin. Its said that the z is week behind the firewall and behind the seats so it wants to bend like a banana. So you want bracing that will stop this from happening and to tie in the suspension mounts to it.

 

I am thinking about using the trans tunnel to stop the flexing. I will make a mini space fram that attaches to the firewall, trans tunnel, diff mounts, and the top of the rear struts. It will also need to go through the fire wall and pick up the front struts. This is called a backbone chassis. We talked about it in previous posts so you might want to do a search. This type of structural inprovement will not help you if you crash but its bloody light. You could add to it by running more tube along the sills and then bringing it up to join the strut tops in front of and behind the doors. You can make this even stronger buy riviting ali. pannels to the space frame so you really end up with a double skin.

 

This is not the way to the strongest z in the world but it will solve the problems and be easy to make. ( i hate making roll cages) Its could also be almost invisable. A bit of carfull carpeting and not many would tell the difference. Thats the bit I like. A roll cage is a bit of a give away.

 

Cheers

 

Douglas

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Ya' date=' I have decided to drop the AWD (YAY!)

 

I have done this after a whole night of research yesterday, and there is too much money involved, and with enough meat in the back, I think it will be fine.

 

Thanks ZROSSA for that post.

 

I am 19, and I autoX'd a coupla of times. I have however owned a BMW m3 and road raced it. Alot. To the point of destruction. lol. (Didnt crash, blew the engine and decided to sell it).

 

By the way, GT3 is for ricers man, dont diss me alright?[/quote']

 

im 21 and im building my own car completely self taught in everything even welding, ive had no help from my family or anything so i know what its like have lots of ideas but no means. GT3 is for anyone that likes to play playstation not for ricers, i appologize if you took it as an insult, but it sounded as if this was all hot air, if you need anything fabricated and your local give me a hollar - pete

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i crashed it bent the frame and alot of sheet metal , so i bought a mig taught myself to weld, made a new frame up front, made subframe connectors and bent up new floors, for now its getting a stock chevy 350, upgraded brakes and stock suspension, i want to out it together without all the bells and whistles so that ill still have things to upgrade later on, so as not to lose interest in it

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  • 6 years later...

My last z was a back half car,unless you are going to do some serious racing,you will be amazed at how much power the stock front of a Z can take with some bars from the roll cage to the strut towers. With a small block 434 chevy my 280 went 8.98 in the quarter at 152mph. It was on the ragged edge of being safe, so this is why I am building my current full tube chassis 240 Z. This car will have a blown 496. I would not recommend a kit form set up,have the chassis custom built and your leg room will be much better.

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