Well RS I guess it will be some little while before you again seek advice on a topic that is outside the square!
Given the restrictions imposed by the Jag handbrake for your intended purpose, a water spray seems one perfectly logical solution to your problem. It's just that the vast majority of Cobra owners do not indulge in rally or motorcross events, as opposed to straight track work. Have you inquired among the motorcross fraternity? They often have moderately powered cars and may have resorted to the water option if the regs permit.
I'm thinking you need to persist with the Jag rear end either to meet your class requirements or to preserve the authenticity and originality (hate that word!) of your Arntz, but if not you could always put the current Jag unit on the shelf "for later" and instal a Nissan R32 rear end, from the 2.5 turbo GTs, for competition purposes. These are commonly used in Australia. They're stronger and lighter than the Jag and have a fully-functioning handbrake!!
My buddy has it on his Miata he races. It works quite well. The weight bias on an Arntz is heavy toward the rear as it is. I believe it was 52 rear 48 front. Is your weight bias shifted even more to the rear? I think mine is close to 56 rear 44 front the last time I weighed it after installing the T56.
To respond to the negative posts: I have torn up two differentials, 12+ sets of tires and the bearing in one rear hub in my 25 years of autocrosses, burnouts, donuts and rallies. I do have way too much fun with my big, small block and this project is intended to reduce the cost of broken bits. If you never spin your tires, drift through turns or run on a track, then I am sure you find this idea crazy.
For the positive posts: Thanks for your interest. The best thing about these forums is sharing ideas. I was really hoping to hear from someone who has tried it. Jaguar rear ends are really difficult to fix!
The weather in Northridge is beautiful, sunny and 68 degrees right now. This is THE place to own an open sports car. You just have to put up with the outragious cost of living and local politics. Here's a view you don't get in Arizona:
RS
I'm not sure why you are upset about negative posts. You asked a question, so you should expect some negative comments.
In my opinion, using water to spray on your tires while drifting in the corners, or on the track is irresponsible.
In one of the other topics, one of our illustrious cohorts wrote this:
"If you want to do burn out to impress the friends, add a water kit and bars to spray the rear tires and help save the drive train."
I have often thought about installing a water sprayer for the rear tires. This is the first time I have ever heard of anyone else suggesting it. I even bought a whole windshield washer system from a junkyard, but have never gotten around to installing it. Has anyone done this?
The sprayer would loosen up the rear end for quick u-turns. I often have to do u-turns on rallies. It would be great because three point turns are a hassle on narrow roads. Other cars I have owned, have had hand brakes capable of locking up the rear wheels for the same purpose. I would use also the handbrake on an autocross course to u-turn around a pylon quickly. The Jag brakes on my Cobra does not have the capability to lock the tires, however. On rainy days, I can quickly spin the Cobra's rear end around with a quick clutch pop and not hurt anything. I am thinking the water sprayer would allow the same thing on dry roads.
The big danger, of course, is accidentally triggering the system at speed. I am thinking a covered toggle switch might be good. Adding an interlock that would prevent engagement in anything but first gear would be better. It may be crazy, but also a lot of fun!
Nothings crazy when it comes to having fun in these fantastic hot rods.Our car comes around too easy with street tires,good thing cause with racing tires would have to be going a lot faster.Have fun
Not sure how much water you would have to spray on a hot set of tires to do any good. As long as you are not doing it on the street and cause an accident, do what you want. It is your car.
If you plan on doing it during an auto-X, is it legal? If you are doing it on a rally and it does not hinder someone else’s progress, again it is your car, as long as you do not cause an accident.
These cars spin around too easy the way it is with just a blip of the loud pedal. If this is what you are doing and you are breaking stuff, I can see why you want to try something else.
Not my cup of tea. But I am not the one that wants to try it.
Be safe.
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Quote:
Originally Posted by tcrist
Not sure how much water you would have to spray on a hot set of tires to do any good. As long as you are not doing it on the street and cause an accident, do what you want. It is your car.
If you plan on doing it during an auto-X, is it legal? If you are doing it on a rally and it does not hinder someone else’s progress, again it is your car, as long as you do not cause an accident.
These cars spin around too easy the way it is with just a blip of the loud pedal. If this is what you are doing and you are breaking stuff, I can see why you want to try something else.
Not my cup of tea. But I am not the one that wants to try it.
Be safe.
All reputable racing sanctioning bodies such as SCCA, VARA, etc. would never allow it. In fact, during a safety tech inspection, they look for and REQUIRE a water/coolant recovery system to keep any fluids off the racing surface. Use it on the street and you are just asking for trouble. Just seems childish in my opinion!
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The sprayer would loosen up the rear end for quick u-turns. I often have to do u-turns on rallies.
Then you should have practice.
Quote:
Originally Posted by RallySnake
It would be great because three point turns are a hassle on narrow roads. Other cars I have owned, have had hand brakes capable of locking up the rear wheels for the same purpose.
Every car can do this - even a VW Bug.
Quote:
Originally Posted by RallySnake
I would use also the handbrake on an autocross course to u-turn around a pylon quickly.
...and loose 1-2 seconds. This works only in Hollywood. Hand brake turns are for front or all wheel drive vehicles. Looks good in Red Bull videos but does not gain speed nor places.
Quote:
Originally Posted by RallySnake
The Jag brakes on my Cobra does not have the capability to lock the tires, however. On rainy days, I can quickly spin the Cobra's rear end around with a quick clutch pop and not hurt anything. I am thinking the water sprayer would allow the same thing on dry roads.
Not really - lot's of water 1-2 gallon per tire at 1 foot. If the drift is 20 feet you looking at up to 40 gallon water...
Besides that, if you have so bad brakes - you should not drive that car.
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Quote:
Originally Posted by RallySnake
I have often thought about installing a water sprayer for the rear tires. This is the first time I have ever heard of anyone else suggesting it. I even bought a whole windshield washer system from a junkyard, but have never gotten around to installing it. Has anyone done this?
It may be crazy, but also a lot of fun!
I think you're on to something here.
Do you think 1 windshield washer would be enough for a AWD or have two systems wired to one switch ?
Paul,
Pay no attention to the pontificating blowholes, most of whom spend the sunny days, beer in hand, waxing and polishing from the shade and comfort of their garages.
“Spin the tires? (roll eyes) how uncouth, please pass me the Grey Poupon”
Yawn…. No doubt the people get a bigger kick out of noise and smoke, than the typical “I use an oblique, semi-circular, wax application technique” car show dribble..
I’m not a burn out guy, but if you are, make it happen!
Now your question:
Sprayers are out there. The street race crowd uses them. There is a valley dwelling, granny quiet, white 71 Nova on steel wheels and dog dish hubcaps that sports a twin turbo LS motor making north of 1100 hp that has one. The tuner tells me it runs low 9’s at 142 with a 1.35 60ft….on the street LOL
Anyway, windshield sprayers don’t throw much water, you will probably have to run it for a few seconds to get enough fluid down. I think there is no chance of over wetting the tires while driving. Unless of course you hit the button when you were auto crossing! LOL
Paul,
Pay no attention to the pontificating blowholes, most of whom spend the sunny days, beer in hand, waxing and polishing from the shade and comfort of their garages.
Sorry, I spend my sunny days driving the car, not polishing it. And if I want to spin the tires, I just apply a little more pressure with the right foot.
Patrick,
Thanks for asking, No the car will be fixed and I must give big kudos (hate that word) to my insurance co. USAA. They took excellent care of me, got it handled very quickly. I hope to have it back before the summer.
And since it’s apart I might make a few minor changes…
Difference between one can and two can't....hahaha
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Sprayers are out there. The street race crowd uses them.
Next time he pulls up to the Honda Civic or Subaru with the fart can exhaust, the OP can not only ask him for his opinion on the latest hi-tech direct injection Water-to-Tire sprayer equipment, he can also ask them for their favorite mustard too.
Jason, the OP asked us for our opinions and we're happy to give them.
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