johnc
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Posts posted by johnc
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I have a customer that races with that setup. Very balanced and you can get plenty of rear bias.
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I would swap the wheels and tires and run 205/60-14s s on the 6" wheels.
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No, wait... maybe. You'll have to measure.
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Either take the spacers out or machine them down 1/4"
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Send them all to RC Engineering for testing and cleaning.
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wow... 1,000 per side!! I didn't know that. I'm so glad that I wrote in this forum.
That's your negotiating position.
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220V (or 208V in most cases) single phase will cover any of your home garage power needs.
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Johnc-why did you name your race car the Rusty Old Z?
Actually, it was called the Rusty Old Datsun and it was meant as a joke to tease the Corvette, NSX, and Evo guys I raced with. There was no rust in the car. One of the few cars I can say that about.
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Most S30 folks run their cars too low for best handling. As you lower the car you must increase spring rate and increase shock damping.
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No rust is acceptable. The price gets reduced based on the amount of rust found. If you have to replace floor pans, figure $1,000 per side discount. Keep doing the math...
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No fees to becoming a vendor. Read and follow these rules: http://forums.hybridz.org/topic/28121-read-before-posting-posting-rules-for-the-vendor-board/
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Try these guys for your cams. They did the original cam for the engine Jim Thompson built for me. http://www.pipercams.co.uk/pipercams/www/index.php
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The shiney "rod" you see in the Bilsteins is actually the shock body. The Bilsteins are inverted shocks. Whether they are better or worse then the Konis depends on your usage. I've raced on both and prefer the Konis. Others prefer the Bilsteins when revalved.
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You do not have to open the hood. I know of two guys who refused. The cops had the cars impounded until they got a warrant.
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You need a thicker skin. If the smoke is white and has a sweet smell it is most likely coolant. Check the thermostat housing and the coolant tube between the two intake manifolds.
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McMaster Carr has hardened shims in various thicknesses. Http://McMaster.com
Regular sheet metal can be too soft. Hardened is important.
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Had the exact same head, block, and cam but never ran it. Somewhat common here in SoCal. Probably came over with a few hundred others in a big shipping container in the late 1980s.
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The front of a 240Z with just a lateral STB starts moving with a spring rate around 300 lb. in. Increasing spring rate beyond that number will not result in any significant lap time improvements, assuming the rest of the chassis is properly set up including shocks that can handle higher spring rates. Its a diminishing return thing.
Adding triangulation reduces the chassis movement and lets the suspension work as it should. That allows an increase in front and rear spring rate (remember, front and rear spring rates are related) and results in measurably lower lap times.
The triangulated design I used was developed on my car using FEA by Bill Savage of T-Mag. But it does move the stress loads somewhere else on the car. In my case where the firewall meets the front frame rails That part of the car started cracking (we knew that would happen, but we didn't think it would happen immediately). I reinforced the chassis with subframe connectors similar to what Bad Dog sells (this was before Bad Dog) and that solved the problem.
At the end of its time with me, the ROD ran 375lb. in. front spring sand 325 lb. in. rear springs.
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You don't need to take it back. Just measure the offset and add hardened steel shims between the caliper and the mounting ears.
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By installing the RB26DET engine you've violated Federal emission laws. That engine was never certified for use in any vehicle sold in the USA. You can never meet any emission law in any state - period. Will that be an issue during your ownership of the car? Probably not unless you do something stupid while driving it.
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Another old curmudgeon that was a wealth of information was Dave Kent. He built winning 911s and RX7s for IMSA back in the 1980s and was the best fabricator and car prep guy I've ever seen. He built, under Porsche's direction, aluminum tube roll cages for their early 934s and 935s after Porsche discovered a loophole in IMSAs rule book. It was a one or two year only thing until IMSA fixed that. When I hung out has shop one of those cars was covered up in the back.
But, if Dave hadn't had his morning beers, you could not talk to him - period.
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Don Potter was a wealth of information, if you could get him to talk. Generally you had to think up an interesting question (interesting to him) and then he would stay on the phone answering that and many other follow up questions.
Somewhere I still have his process specs written down for his cryo treated and shot peened 280z stub axles and front hubs. I really should find my stack of Steno pads with all my S30 notes.
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Do a search guys. If the mounting is designed right the center of the firewall can support enough to increase front spring rate by at least 75lb. In.
Ford Mustang 2006 Rear caliper together with Toyota vented caliper.
in Brakes, Wheels, Suspension and Chassis
Posted
Its not about the piston size with the Mustang rear caliper, its about rotor diameter. Those rear breaks provide more then enough rear bias.