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Welcome to the updated Viper Garage.  We look forward to exchanging stories, events, tech info, pictures and fun.  Welcome to our humble Viper Home
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Latest Member: levi
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1
RT/10 & GTS Viper Discussions / Re: Tom's 40mm brakes are back!
« Last post by 40mm on March 30, 2017, 06:29:08 PM »
Edited for correct email address

Ricks40mm(at)hotmail.com
2
RT/10 & GTS Viper Discussions / Tom's 40mm brakes are back!
« Last post by 40mm on March 29, 2017, 07:11:10 PM »
Tom's 40mm brakes are back and they are as good as ever!
The only change is they're now made by Rick.

As you may know, Toms's life got super busy and he stopped making the 40mm brakes a few years ago. I installed one of those last sets on my 2000 RT10 and I immediately approached Tom because it was too good a product to let die. So, I've taken over his business of building the best bang for the buck braking mod for all pre-ABS Vipers, and I aim to make him proud!
  I've changed nothing from Tom's design. He's given me his spares, suppliers and the knowledge to do his mod; I'm even using the same machine shop he used to machine the calipers and pistons.

I don't really need to say what these rear calipers do for the braking balance for the Gen 1/2 (non-ABS) Vipers- a forum search will say it all.
It's a simple, hour long straight up caliper swap that allows you to use whatever stock sized pads and rotors you like, with no cutting or modifications needed on the car whatsoever. It brings the car into a near-perfect braking balance and all but eliminates the dreaded front end lock up that is the problem with these front brake heavy cars. It really is how these cars should have come from the factory.

You get a pair of ready to install 40mm modified rear calipers, rebuilt with all new rubber seals and o-rings, sandblasted and painted in hi-heat caliper paint.

The price is $800/pair shipped, exchange only. I need your old calipers sent back to me in Buffalo NY in order to keep this business going. You can send them after you've installed the new ones- so no car down time.

I have 5 sets ready to go, once they're gone I likely won't do another run until the fall.

I can also do rebuilds if you have tired or leaking 40 and original 36mm calipers.

Any questions please PM, email ricks40mm(at)hotmail.com or call/text six four seven 992 3933.

Thank you!
Rick Schaefer

Oh, and for any Canadians here... I'm also in Toronto so I can make a great deal for you without worrying about the crappy exchange rate and cross border shipping.
3
How-to section / Re: DIY Big Brakes Gen1/2
« Last post by RTTTTed on March 10, 2017, 06:04:42 PM »
 I copied and pasted this info from MotoIQ written by a Grand Prix Racer      "BRAKING

The Viper’s braking performance is horrible and it has always been a shortcoming of the car in every magazine competition.  The main issue here is not a lack of stopping power since the Viper’s 38/42mm 4-piston Brembo front calipers are larger than the Brembo “Lotus” (Esprit V8) and 2000 Mustang Cobra R front calipers and the 13 x 1.25” front rotors are quite large for the day.  The problem is that due to the lack of ABS, Chrysler built in so much front brake bias in attempt to make the Viper “Safer” under braking so it will never spin out.

The use of a 36mm single-piston Lotus Esprit rear caliper (which is the same as the rear Elise caliper) on a 13 x 0.87” is not powerful enough to make the rear 345 tires contribute very much to of the deceleration of the car, thus making the front tires do all the work.  Increasing the rear brake bias will greatly improve the stopping ability of the car, but we will cover that in a future article.

*The ABS-equipped 2001 & 2002 Gen-2 Vipers had a larger 43mm rear caliper which reduced the 60-0 braking test from 122-155 feet (depending on the driver’s ability) down to a consistent and competitive 110-115 feet.  The 2003+ Gen 3 cars were able to shorten that distance down to 97 feet.

During our test, the stock 18 year old pads did not hold up very well to track use.  After a couple hard braking zones, we still had good pedal stiffness but the car would not stop.  We are unsure of the age of our brake fluid but due to our pedal not dropping to the floor, we glazed the stock pads before we boiled the fluid.  We will be changing out the pads and fluid and be sure to re test.


Before fading the brakes, we were able to produce a spike of 0.96 Gs of braking before locking up the front tires.  You can see a drop in longitudinal Gs in attempt to unlock the tire before the deceleration stabilized around 0.8 Gs.  For comparison the McLaren 12C could brake consistently at 1.0 to 1.2 Gs.

“If the Viper GTS hadn’t been dead last in braking performance, it would’ve thoroughly spanked its opposition at the road course… sticky tires gave the Dodge race-car-level grip but the ABS-less Viper had devilish tendency to lock its fronts under heavy braking, raising the Dodge’s lap time by a few tenths.” – MotorTrend 5/1997"





4
How-to section / Re: Wheel Alignment specs for TRACK. Mark Jogensen +
« Last post by RTTTTed on March 10, 2017, 05:46:17 PM »
Here is a page or 5 on Gen 2 track alignment specs from Billy.  Winning Grand Prix driver. 

http://www.motoiq.com/MagazineArticles/ID/3806/PageID/8934/Project-Viper-GTS-Part-3--Baseline-Track-Testing-Data-Video.aspx

next page has a good article on the brakes of the Gen 2s!
5
Viper Parts, numbers, bulbs, specs and info / Track into and alignment specs link
« Last post by RTTTTed on March 10, 2017, 05:39:28 PM »
Here's a few pages on Gen 2 handling and some alignment specs to increase the tire grip.

http://www.motoiq.com/MagazineArticles/ID/3806/PageID/8934/Project-Viper-GTS-Part-3--Baseline-Track-Testing-Data-Video.aspx
6
RT/10 & GTS Viper Discussions / Re: Front mount twin turbo all out build
« Last post by RTTTTed on March 07, 2017, 11:11:27 PM »
Looking great Joel.  Waiting for Transmission pics.  Since you're signed in to the June Halfmile ...
7
How-to section / Re: Trap Door Oil Pan Mod & Windage Tray Upgrade
« Last post by RTTTTed on March 07, 2017, 02:17:39 AM »
Both the Gen 2 oil pans are the same - except the later windage tray has rounded cutouts allowing the oil to drain back to the pan much faster as the early tray requires much of the oil to flow all the way down the side of the tray to get acess to the baffle plate above the oil galleries.  The earlier windage tray can benefit from the newer styke cutouts  and tin snips can create a newer pan from an older model.

Another big improvement to the Viper's oil drain back is created by drilling 3/4" holes through both windage trays under the crank scrapers!

I've added a picture showing the crank scarper from the top of the windage tray.
8
How-to section / Re: Trap Door Oil Pan Mod & Windage Tray Upgrade
« Last post by RTTTTed on March 07, 2017, 02:05:50 AM »
Roe Racing also sells a similar trap door pan kit.  They were included in a Viper GTS article from a Mustang Tuner for MotorIQ.
,
They have some pictures posted that show the action of the trap door pan kit and the differences between the early Gen 2

Pic 1 shows the stock Oil pan with the top baffle plate removed.  Under acceleration at say .... 1 G force the oil would try to go to a 45 degree angle up thje back of the pan and engine whcih would caiuse the oil to interfere with the spinning of the  crankshaft, wasting hp as the crankshaft pushes through the oil at supersonic speeds.  The antifreeze in this tilted pan shows just a small amount nof liquid but see the angle and where the liquid is?

Pic 2 shows the trap door pan in action.  The front trap door closes under Deceleration and is open under acceleration allowing the oil to flow from the front to the middle section where the oil suction is.

Pic 3. shows the early Gen 2 windage tray and the "cream Puff" windage tray which came in the200 to 2002 engines with the 10.5 qt oil pan

pic 4.  shows the early Gen 2 oil pan whcih holds 9 qts and the 1" taller newer 1.5qt oil pan
9
How-to section / Re: Tire and Wheel Weights and Fitment for Vipers
« Last post by RTTTTed on March 06, 2017, 12:48:13 PM »
I thought I'd sold my 18" CCW racing wheels so I dismounted the Road course slicks in preparation for shipping  It was another No sale, but shipping weight for the 6061 T6 Billet and forged racing wheels.

The 12 x 18" CCW wheel weighted 23#
10
How-to section / Re: Better seatbelt harnesses shoulder mounts!
« Last post by RTTTTed on February 24, 2017, 09:22:44 PM »
My NEW belts purchased after the above mentioned belts are dated 2 years ago now, still in the sealed plastic pouches, need to be recertified and/or replaced even though they have been inside a closed shop inside a box and not exposed to sunlight or in a car.  Stupid, stupid rules and way to put YOUR money in SFI and manufacturers wallets! 

What a waste of MY money.  There's the recert fee, shipping charges, Gov will want sales taxes AGAIN (12%) as well as shipping fees, fuel surcharge on shipping and 50% border fees unless sent by USPS. 
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