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ZROSSA

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Posts posted by ZROSSA

    exhuast weldings

    in Exhaust

    Posted

    Aparently you should yous gas for exhuast. It wouldnt stop me from using a mig though. The concern is the spater and blow through messing up with the flow so be carefull.

     

    Douglas

    Longest stroke?

    in Gen I & II Chevy V8 Tech Board

    Posted

    Howdy all,

     

    I was just going through Grumpy's latest self help list and it made me wonder how far you can stroke a 350 chevy. There was a 3.8 crank listed and this made 388. Standard 400 crank was 3.75. My thinking was that you can get a 6 inch rod and piston combo for this stroke, so why not run the 5.7 rod and 6.0 piston and increase the stroke to 3.9? You could even use the standard 400 rods and stroke it even further if, and this is the crunch point, it will fit. I think i have seen the 350 out to just over 390 cube in a mag artical i read a while back. Can it be done?

     

    Cheers

     

    Douglas

    Would a SB fit into a VW bug?

    in Miscellaneous Tech

    Posted

    There are about three different companys out there that also put 350 chevs into the 911. This hangs out the back like the vw. They say in the chev in the 911 has the same weight distribution as the standard 911 turbo. It has a higher center of gravity though and the turbo was never known for it cornering anyway.

     

    Douglas

    Backbone Chassis

    in Brakes, Wheels, Suspension and Chassis

    Posted

    Thanks John,

     

    There will be 3 removable x members underneath to box the trans tunnel to help with torsional stiffness. I thought lateral stifness would be taken care of buy tying into the fire wall and front and rear struts? This would have stressed panels covering it so it shouldnt realy move at all. Lotus have used something similar in there road cars from the 1st elan to the esprit. I believe the viper still uses a back bone as does tvr. I realise that there are beter ways to make a chassis stronger but i think that this could work beter then subframe conecters becuase it can tie in all the suspension mounts as well. Obviously a bit more work though. Any Ideas on tube sizes?

     

    Cheers

     

    Douglas

    Backbone Chassis

    in Brakes, Wheels, Suspension and Chassis

    Posted

    Thanks John.

     

    I have searched but havent found any photos of the viper chassis. I had an idea that they were not that stiff buy the cages you see in the le mans ones. Buy the way you said that it will be taking the chassis past the norm for a 240 i take it if done properly it will still be way better then stock with a roof? The weak point as you say will be between the firewall and the rear but it will be wellcross braced to limit this as much as possable.

     

    Cheers

     

    Douglas

    Backbone Chassis

    in Brakes, Wheels, Suspension and Chassis

    Posted

    Howdy all,

     

    I am going to take the roof of my 2+2. I have talked to a few of you already on chassis strengthening but i need a little help on tube sizes. What i am planing to do is make a backbone chassis that is welded on to the trans tunnel. I would be done like a space frame and go through the fire wall so it joins with the struts up front. The back will join to the rear struts in a t shape very much like the older Lotus' the space frame will then have sheet metal welded to it to tie into the tunnel to the space frame. I understand the round tube is the strongest but i would pref to use square as it far easyier for me to fabricate. I dont mind useing round tube to do the x-bracing.

     

    What i am looking for is what size tubing should i use. I think i would like 1x2 inch for the main beams so any thing that joins should be 1 inch. What Guage tubing would be good. I would like this as thin as i can get away with. Its not subject to any rules i just want max stifness for min weight.

     

    Cheers

     

    Douglas

    Holly part interchangability?

    in Fuel Delivery

    Posted

    Thanks,

    This was some time ago and i have had work done on the 600 now so I will be sticking with it. I have slowed down on the engine for a while. The body work needs seeing to first and my other car must come first, My new house before that. bonk.gifbonk.gifbonk.gif

     

    Cheers

     

    Douglas

    RB20DET vs. SR20DET....

    in Miscellaneous Tech

    Posted

    I think that being in the U.S. would be the first thing ruling against the rb. If you compare the 2.0 lt rb there really seems to be one answer. The sr is lighter has more/cheeper parts avalable. the power should be similar and mabye work in favour for the sr. It has two less cylinders to drag around. You will also get the weight further back with the 4. It might even pay to look at te ke24 with a turbo kit as well. This is all from a bang for $ piont of veiw, If thats not relavent then the straight 6 always sounds great.

     

    Cheers

     

    Douglas

    78 2+2 conversion

    in Gen I & II Chevy V8 Tech Board

    Posted

    Mines a 2+2 as well. I bought it converted and its a bit of a kiwi special bonk.gif ,but very similar to the jtr one. Odd as it may seem, I plane to cut the roof of as well. More to due with rust in the hatch then anything else, however. The chassis looks stronger on the 2+2. As far as I can see the drivshaft is the only diff.

     

    Douglas

    What education or reading?

    in Gen I & II Chevy V8 Tech Board

    Posted

    My fav. book of all time is PERFORMANCE 4 STROKE TUNING by A. Grayham Bell. I learn more everytime I read it. Must be over 20 times now. Imho get it first. For me it made the Vizard and other books easyier to understand. It even has formulas to match exhausts size to your cams and heaps more. Its one of those books that makes you see a lot of the hype in car mags these days. Beware of some mags. Dont forget that they make money buy selling advertising and there projects are seldom paid for out of there own pockets.

     

    The guys on this sight are awsume and know there stuff. I never bother going anywhere else unless Grumpy Vette says to. icon_wink.gif Dont fear to ask away, but dont forget most of what you seek is probably already hear.

     

    Welcome

     

    Douglas

    Road Racing

    in Miscellaneous Tech

    Posted

    I should have put quote marks around it. It was from a Jackie Stewart book I read years ago. He felt that when racing there was no additional deceleration to be had from the transmission with modern brakes. I tend to agree.

     

    Cheers

     

    Douglas

    Which one: inline vs. V engine

    in Miscellaneous Tech

    Posted

    If i could find a large displacement v6 4 valve engine i would go for that. Providing i was starting form the begining. It would have to make an easy 400 flywheel hp and not be boosted. I dont think one exists so i will stick to the small block chev. There is a co in the UK called TVR that has a 4 lt 380hp straight 6. This would be fun but i really want the weight as back as far as i can get it.

     

    Douglas

    starion conquest basic turbo engine questions

    in 6 Cylinder Z Forums

    Posted

    This donk was also in the starion and aussie trucks and sigmas. Some of the aussie have had good results with the engine. Its not much of a rever and the 2.0 lt engine made more power from the factory, But it does make good torque for a 4. I think its still in production in aussie with a 3 valve head. I could stand corrected on that though. Do a search on the aussie sites like AUTOSPEED, FAST FOURS and HOT FOURS. They are bound to have something. The later two have become very ricey over the years so try some ofthe past issiues.

     

    Cheers

     

    Douglas

    Road Racing

    in Miscellaneous Tech

    Posted

    Brakes are for braking. Not transmisions. I always found that, for me, the manual trans ment i could be in the gear i wanted to be in when i wanted to be in it. You would also get no driveline jerk if you matched the revs so the car was more stable during the gear change. Auto cars are getting beter but not there yet. The new bmw m3 may be an exeption, but i dont think its been released to the public yet.

     

    Douglas

    Why not supercharger??

    in Turbo / Supercharger

    Posted

    I love superchargers. My wife had a aw11 mr2 for years with a factory supercharger. You could nail that thing at low revs and it would take of with a howl. I kept a 750 sport bike at bay for 40kms (he turned of) through hell twisties in third gear the whole way. Baby forced sale. icon_sad.gificon_sad.gif

     

    Douglas

    How difficult is rust to fix under the car?

    in Body Kits & Paint

    Posted

    Dwayne,

     

    Is this beasty a 2 seater or 2+2? I have really got to wonder if a 2+2 is worth it seing that heaps came over as jap imports. In saying that, mines a 2+2. So far i have found rust around the hatch, hence i am thinking about converting it to a convertible. I havent climbed under it yet but if the floor and chassis have rust i will take what i want and bin the rest. Cheers for the links, buy the way and I sympathise with you regarding Auckland weather. I put up with it for 20 years. That why I live in the Hawkes Bay now. You wouldnt contemplate a convertible in Auckland.

     

    Cheers

     

    Douglas

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