I got a good friend who has a couple of quick change rears, that his dad has left over from his track days. These are not old, they are aluminum centers, steel axles, 4:11 and 3:86 gears, disk brakes, 5on5 bolt pattern, I think he said speedway racing. They have trac sensor gears, I guess like a smart posi. So If I cutt one down to fit a rod is it a wast of time, or will this be a polished ***** under my car? I dont know squat about quick rears. O yeah these are not built for dirt. And are they worth 875.00 each? Thanks..........
i have one in my rpu, it looks cool and works great but it whines so load it sounds like the cops are chasing ya..cant here the motor.....its gota go....
Sounds like you are being offered pavement race car rear ends made by Speedway Engineering. If these have the limited slip differential they are streetable. More important would be the width of the hub flanges as most race car rears are a little wide for most hot rods and larger size makes them look somewhat bulky in a small hot rod. Priced about right if they are complete with brakes for used parts. To the fellow with the roadster pu who answered but was annoyed about the gear whine, alot of this can be traced to an incorrectly meshed ring and pinion or a damaged case. Those truck housing rears are adjusted by shimms behind the carrier bearings. Quick way to check adjustment is to pull the cover and pinion qc gear and check the backlash on the pinion either to much or to little will create a noise.
I'm glad someone chimed in about the gear noise in quickchanges. After being involved with at least a couple of hundred of them during my oval track manufacturing days I can report that a large percentage of the gear whine is indeed caused by incorrect ring and pinion mesh. When these units are put together at the factory we found that an overwhelming number had WAY too much backlsh. I think the reason for this is that most will be used in a compe***ion invironment where noise is the norm (mainly open exhaust) and looser tolerances aren't detrimental where the possibility of high heat being generated is a real possibility. High heat USUALLY means a tightening of tolerances which can lead to accelerated wear or the seizing of parts, neither of which is a welcome result in a compe***ion environment. When a careful blueprint ***embly is done (a pain in the *** because the whole unit has to be dissambled to reshim the carrier) keeping the backlash to the minimum side the noise is remarkedly reduced. Another option is to subs***ute the straight cut change gears with helical cut ones. This introduces another set of requirments, mainly the installation of thrust washers in the centersection and cover to take the side loads generated by the helix (which are not present with straight cut gears) and the purchase of the new gears for every ratio change you intend to use. Frank
Straight cut Q/C gears WILL whine. Too much or too little backlash will make them louder, but you will always have the whine. My quickie did 3000 miles for the HAMB Drags including a 1200 mile non stop from Kansas City to Charleston. Not even a trace of metal in the oil. Of course, I paid a guy who knew what the hell he was doing to set up the ring and pinon. Perfect backlash for a street car and it still whines like hell. I LOVE it. The sound of that quickie wailin' along still makes me smile my *** off everyday. Either man up and enjoy the noise, or buy some helical gears. Here's mine... -Abone.
Chops....Mine didn't really have axle tubes when I bought it. I ordered axle housing tubing from Mosher Engineering and cut them to my length. (61.5" from wheel mounting flange to wheel mounting flange.) Depends on your specific set up, but most quickies will narrow rather easily. You have to remove the tubes from the side bells, cut to your new length, then re-install. New wide 5 or Grand National style axles can be ordered in almost any length for 80 bucks each. Really very easy, but there is some stuff you NEED to know when setting one up for the street. If you do end up buying a quickie, gimme a holler adn I'll walk you through some of the important stuff. Good luck, -Abone.
I've just ordered a QC from Kiwi Quickchanges in New Zealand, specifically for an A axle. I think they're the only company currently making them for the narrower centre section axles. I'll let you all know when it arrives and post some snaps.
the cyclone looks awesome and the rodsville is really nice aswell, i will go with the rodsville though, can't afford the cyclone, for the same amount a cyclone costs i can get more stuff for my car, if the price was the same i would have gotten an cyclone, i wish i could afford to support the cyclone though, kevin seem to deserve all support he can get, i kinda wish there was some cyclone valve covers for olds rocket aswell as intakes
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