ZROSSA

Anythings possable. Do a search on the lamborgini replicars. They must have hinge kits to make the doors work. Douglas

Yep, rb20 2lt sraight 6. P.O.S!No turbo. Yawn Douglas

Bummer, I thought we were about to get some welding lessons. I sure could use some. I have just started using a mig and they look nothing like that but i am getting good penetration so they wont fall to pits. I have one roll cage tube going through the fire wall to the strut on my corolla. I have been pondering running more tubes to the strut like a lot of modern uni body race cars but the fabrication was going to be a nightmare for me. I then had the idea of using 2ml sheet to make up gussets from the srutt to the fire wall and the inner gaurd. I think it will work very well and it looks good as well. The cage and the body now act like a super strong monocouque(sp) . I might even fill it with structural foam. lets see if that baby twists. Are you not allowed to run the cage to the struts? Douglas

Mat, Have a look for opel or holden vectra or astra. Its pretty easy though, just weld on some brackets to the bottom of the strut for the link from the roll bar to pick up on. Douglas

Mat, How about using the strut to take the roll bar loads? Then there is no bending on the lower arm and you would probabley get a more direct responce to the roll bar. All the opels/holdens i have seen do this. It would mean that you would get more leverage on the bar so it would apear softer. You look very handy with the welder so it should be a piece of piss. Douglas

Cool Mat. Try to put a gusset of sorts all the way around that pipe. Get a big washer shaped piece of metal that inside diameter will just slide over your pipe. You will need two. Slide them over the pipe and weld them. also weld them to the head of the bolt. I was looking at welding a bolt to pick up a lower shock mount on my corolla and a engineering friend said he didnt like to weld hardened bolts to softer metals. You may want to check that out. The last thing you want to happen is the bloody wheel flying off. Douglas

Will have a go at this Primary pipe length(p) p=(850xED/rpm)-3 Ed = 180 degrees plus the number of degrees the exhuast valve opens before BDC RPM = engine speed being tuned to Inside Diameter (ID) ID={square root of[cc/(p+3)x25]}x 2.1 cc = cylinder volume in cc p = primary length in inches Hope that might be usefull. It looks a bloody mess on the screen. Douglas

Howdy all, I am still planing the "Most awsume z chevy exhast". I am thinking about runing pipes under the oil pan so I can run 180 degree headers. Any one know what distance I should keep the pipes from the pan. There isnt much room, But i think i can pull it off if I can get close to the pan. Mabye I could wrap them and that would solve the problem. Input Please. Cheers Douglas

Lpg and Cng are used a lot down under. Most of the taxis in aussie run on lpg and they get some huge miles from them. I have seen lpg used in couple of mags on Super/turbo charged cars where the standard compression ratio is used. Do a search on lpg and see what they come up with. Douglas

Some off the things we do when we are younger and have no money can haunt us for a long time after. Money problems seem like they can be damn impossable to deal with at times but are usually over come. Have a good think about it and how your life will cange if you are caught! Lecture over. Cheers, Douglas

I did it without a spring compreser on my zx 2+2 i had. This is not safe and the spings are probably softer on the 2+2. Any way I undid all the top bolts on the strut while the car was on the ground and then jacked the car up untill they were lose. This worked on the front and back for my zx. I tryed it on other cars and it didnt work. Needed a spring compreser. For the price you guys pay for tools I would buy a compresser pronto. Douglas

Thanks John, I have down loaded it the article. Missed page 3 and 5. Anyone else have them? I have seen this article somewhere else as well. Is it in some of his books? Pete, I thought that the place where the exhuast changed color was where you cut the pipes off if you were running open headers. I think it should be a multiple of the primary pipe length. I have the formulas somewhere in my shed under a house lot of furniture. Bloody house still isnt finished so I can unpack. Cheers, Douglas

Make sure you compare the distance from the engine mounts to the fire wall with those of a early z. If it is shorter then JTR wont work. However, you may be able to make it work just using the spacers. Failing that, check out the set up on a 280zx. Good luck, Douglas

They are little rockets buy all account. Lighter then the z as well. http://www.renegadehybrids.com/main.htm http://www.pacificnet.net/v8/ Also do a search on "porchev" They have a forum and stuff. Cheers Douglas

Z- Dreamer, those are all made to exit side ways. No way they will fit. John, I looked at those links last night but didnt really come up with much i didnt know already. I am guessing that the rules for circle track racing say what size exhuast you run and these different aplications are to get the best performance within those rules.So it looks like equal length headers into a dual system with a x- pipe is close to the best you can do without using 180 degree headers. Is there a formula that can be use to see where the best place to put the x-pipe is? I imagine it would be the same lenth away from the colecters as the lenth of the header tubes. After the x-pipe is the system still "in tune". By this I mean can i put the mufflers any where or should they be a certain distance from the x-pipe or collecters as well? Cheers Douglas

Fair enough, Where do I go to find the new info? Howe racing in particular made a comment on one of there dual systems along the line of ' use this when the rules say you cant use a single'. This gave me the impression that they prefered the single system. The F1 guys use duals but then they dont have to deal with the 90 degree crank. Need heaps more info! Cheers Douglas

Howdy all, I have been looking here: http://www.schoenfeldheaders.com/sbchevy.htm and here http://www.howeracing.com/exhaust/index.htm and here http://www.drgas.com/ I now am rather confused I think the rules of different catagories of racing say what size and style of exhuast you can run. I was always under the impression that a v8 worked best with a twin system with a cross over or x- pipe. I get the feeling from some of the above places that a sigle pipe can work as well if not better in some aplications. I realize that these are race only systems but i feel that we should get our exhuasts as close to race spec as possable and then work on the noise. Can any of you offer some additional info. A single pipe would work well for the z if they can get as much power. What do they sound like? I am a long way from the circle fellows so i just dont have any idea. Thanks, Douglas

The poms are big on butting little k series engines in these things. I have also seen 12a rotarys in them in some aussie mags. That seems to fit nicely. The trans tunnel might be tight or need to be redone for a rotary though. Try to stck to something thats light and rear wheel drive. ca18 and sr20 would be nice. I think that those would be the easiest and cheepest options. The susuki 1300 4 valve engine would be nice. Very light. But I would only go that way if getting the thing engineered and certed was hard with the nissans or rotarys. Douglas

I still really like the idea of a backbone chassis for a road car. Kind of a mini space frame that runs along the trans tunnel. This would pick up the rear struts behind the seats and go through to the fire wall and meet the top of the front struts and the compression struts at the bottom. It would be welded to the trans tunnel at as many place as possable and then i might rivit flat ali. sheet to it for x- bracing. Like a lotus 7. This still wouldnt help in a side impact though. I like the idea of the door bars that katman talks about but I dont like the extra weight. I dont belive that they ad much to chassis stiffness, only saftey. If you look at cages where weight is at a premium they dont have door bars. Cheers Douglas

Also search in the turbo forum. They probably dont look over here as much. Heaps of the guys have done them. Douglas

Also search in the turbo forum. They probably dont look over here as much. Heaps of they guys have done them. Douglas

They make it look so easy. I still might do this. Cool link. Cheers Douglas

Bit of a guess here but i think the only cars that had a 350 was one of the bathurst special monaros and the statesman. Late 60's early 70's. Here it is the same. Bugger all ever came to the country in cars, but there are still many to be found. There are usually around 20 small blocks for sale in the local used bits rag. You must have heaps more in aussie. Happy hunting. Douglas

This may or may not be any help but...... Down here the road race rules are far more strict then the drag ones. I get the feeling that its the same in the states. I would build my cage to the SCCA rules. Hopefully someone will jump in and correct me if i am wrong. Cheers Douglas

Lancia made a group b rally car that was supercahrged and turboed. It was wickedly quick and sounded great. It had a buy pass to change over at a preset boost pressure if i remember correctly. I would still get betten buy sraight turbo cars at times so i doubt it was really worth the effort. Douglas