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#1177815 - 02/13/12 01:30 PM Dvorak Rear main Seal??
sg66mopar Offline
pro stock

Registered: 10/01/09
Posts: 1254
Loc: Oregon
Has anybody used one of these and are they really all they're cracked up to be.

I've called twice today trying to order some. The first time they said to call back in a couple hours 'cause they were in the middle of a crisis. OK, no problem.

I just called back a couple minutes ago and asked if they had their crisis solved so I could order parts and they actually hung up on me!

Is this normal behavior for them?
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#1177816 - 02/13/12 01:45 PM Re: Dvorak Rear main Seal?? [Re: sg66mopar]
bonefish Online   content
master

Registered: 11/03/04
Posts: 6329
Loc: s.w.fl
i cant imagine Dan hangin up on ya,he has had some problems and findin decent help has been one of them
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#1177817 - 02/13/12 02:06 PM Re: Dvorak Rear main Seal?? [Re: bonefish]
Dave64 Offline
mopar addict

Registered: 02/05/05
Posts: 656
Loc: Oklahoma City, OK
Dan's a good guy keep trying and they work well.

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#1177818 - 02/13/12 02:46 PM Re: Dvorak Rear main Seal?? [Re: Dave64]
domingo Offline
master

Registered: 01/20/03
Posts: 9294
Loc: Lima, Peru
I have dealt with Dan a few times.

I guess he is the old grumpy kind, but he is a good guy in the end.

Been 100% OK everytime I dealt with him, its just kinda hard to get ahold of him. I got a kick out of hearing him ramble and vent about not being able to get any good help nowadays! LOL
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SCOOPS! Steel 67 RO/WO Super Stock Hemi * 64-65 Super Stock Hemi * Max Wedge $1500 incl shipping *70 NOS Duster grille $1500 OBO incl shipping*

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#1177819 - 02/13/12 02:59 PM Re: Dvorak Rear main Seal?? [Re: domingo]
sg66mopar Offline
pro stock

Registered: 10/01/09
Posts: 1254
Loc: Oregon
I don't even know who it was that answered the phone and hung up on me. I've never talked to anybody there before.

The first time I called somebody else answered then handed the phone to Dan so I got to talk to him for a minute or so.

The second time whoever answered just grumbled Dvorak, listened to me for a little bit then hung up.
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#1177820 - 02/13/12 03:12 PM Re: Dvorak Rear main Seal?? [Re: sg66mopar]
JohnRR Offline
I Win

Registered: 01/20/03
Posts: 71231
Loc: U.S.S.A.
Quote:



I just called back a couple minutes ago and asked if they had their crisis solved so I could order parts and they actually hung up on me!






That might have initiated the hang up

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#1177821 - 02/13/12 03:35 PM Re: Dvorak Rear main Seal?? [Re: JohnRR]
crabman173 Offline
master

Registered: 01/01/06
Posts: 3017
Loc: Big Lick , North Carolina
The best rear seals are sold by a memeber here--they are the red Viton Old stock real USA made--Marsh at Moparts Connection has them in stock and will not hang up on you--see his ad on sponsor page. Ask for the BLUE side seals--they are re-tooled and not like the red side seals that nobody can make work.

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#1177822 - 02/13/12 03:51 PM Re: Dvorak Rear main Seal?? [Re: sg66mopar]
rickraw Offline
top fuel

Registered: 10/29/10
Posts: 1602
Loc: Ambridge, Pa.
just ordered a seal 2 minutes ago. nice dude. said it will here in a few days seeya.

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#1177823 - 02/13/12 04:46 PM Re: Dvorak Rear main Seal?? [Re: sg66mopar]
CompWedgeEngines Offline
master

Registered: 11/03/04
Posts: 3286
Loc: Syracuse,NY
I stock the Superformance seal kits with the new blue side seals as well. Drop me a note if ya want.
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#1177824 - 02/13/12 04:51 PM Re: Dvorak Rear main Seal?? [Re: rickraw]
roadhazard Online   content
master

Registered: 04/29/06
Posts: 3335
Loc: Akron, Ohio U.S.A.
Both Dan Dvorak and Todd @ Marsh Performance are great to deal with and have the Top Shelf rear seals

Dan grumpy sometimes?
I know he has only 1 leg for sure and I think 4 thumbs so maybe it was an accident

Also Todd @ Competition Wedge stocks these


Attachments
7069944-#9440.JPG (85 downloads)


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#1177825 - 02/13/12 05:35 PM Re: Dvorak Rear main Seal?? [Re: roadhazard]
Performance Only Offline
top fuel

Registered: 07/10/10
Posts: 2091
Loc: Delray beach, Florida
what is diferent with the blue seals? i haven't had any problems with the red ones but maybe i need to try the new and improved version.
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#1177826 - 02/13/12 06:15 PM Re: Dvorak Rear main Seal?? [Re: Performance Only]
CompWedgeEngines Offline
master

Registered: 11/03/04
Posts: 3286
Loc: Syracuse,NY
They are new, innovative and a industry insider exclusive. Please send me $20.00 for more information..... ....I have been using them in my Twin Turbo yugo for over a year now, and they have surpassed the typical Roadhazard warranty period...with many sub 6.50 second runs.... ....I worked closely with Roadhazard to develop a color that " people of your age group" could spot and find easier...
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#1177827 - 02/13/12 06:30 PM Re: Dvorak Rear main Seal?? [Re: CompWedgeEngines]
roadhazard Online   content
master

Registered: 04/29/06
Posts: 3335
Loc: Akron, Ohio U.S.A.
Quote:

They are new, innovative and a industry insider exclusive. Please send me $20.00 for more information..... ....I have been using them in my Twin Turbo yugo for over a year now, and they have surpassed the typical Roadhazard warranty period...with many sub 6.50 second runs.... ....I worked closely with Roadhazard to develop a color that " people of your age group" could spot and find easier...





Todd

Sorry Dan, can't divulge any trade secrets
Other than the fact they are Mopar blue

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#1177828 - 02/14/12 01:22 PM Re: Dvorak Rear main Seal?? [Re: roadhazard]
John_Kunkel Offline
I Live Here

Registered: 01/20/03
Posts: 16136
Loc: Rio Linda, CA

Do these seals work OK on the factory knurled seal surface?
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I'm supposed to respect my elders, but its getting harder and harder for me to find one now.

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#1177829 - 02/14/12 01:45 PM Re: Dvorak Rear main Seal?? [Re: roadhazard]
AndyF Offline
Too Many Posts

Registered: 01/20/03
Posts: 20149
Loc: Oregon
I spent a little bit of time looking into rear main seals. I was trying to find something "super trick" for a dry sump engine. As far as I could find, there are only a couple of seals on the market. The standard one and the Viton one. It appeared to me that everyone in the industry just resells one or the other.

Maybe I'm wrong? Does anyone know if anyone else is making something different? My guess is that Dvorak is just reselling the Viton seal but maybe he had something special tooled up just for him?

There are special seals available for Chevy and Ford motors, but I didn't find anything for Mopar big blocks.

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#1177830 - 02/14/12 02:25 PM Re: Dvorak Rear main Seal?? [Re: AndyF]
BradH Offline
I Live Here

Registered: 01/30/03
Posts: 11700
Loc: Valhalla... eventually
What I bought from Dvorak some years ago is identical to the Viton seals & side rails that 440 Source shows on their web site.

I'm also interested in knowing how the blue side rails have been improved over the red ones I have two sets of now. Oh, and I'm 52 if that has anything to do with it...
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#1177831 - 02/14/12 03:56 PM Re: Dvorak Rear main Seal?? [Re: BradH]
crabman173 Offline
master

Registered: 01/01/06
Posts: 3017
Loc: Big Lick , North Carolina
Andy is almost right. The red seals are the red seals--but...the sorry black units Fel Pro has sourced from who knows where are JUNK--The old orange side seals are a PIA and not the right diminsions--the blues are a "corrected" version of the orange and the best deal going--The seal that Mopar sells now is the sorry no good POS that FelPro has and it is NOT right--it has caused more problems than you can imagine

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#1177832 - 02/14/12 05:11 PM Re: Dvorak Rear main Seal?? [Re: crabman173]
CompWedgeEngines Offline
master

Registered: 11/03/04
Posts: 3286
Loc: Syracuse,NY
Here is a description of the red seals, which are like the FelPro style 2947 premium race seal. They are made for hi performance and vacuum applications.

Our “Premium Sportsman Series” rear crankshaft seals are engineered to provide confidence
in sealing a very demanding area of today’s advanced racing engines.
MATERIAL
Unique blend of premium Fluoroelastomer rubber with friction reducers provides minimal
parasitic losses and withstand intermittent temperatures up to 550˚F.
DESIGN
Special design sealing lip and parting surface area ensures confidence in sealing Dry Sump/
High Vacuum as well as Advanced Wet Sump applications.
RESULTS
Top engine builders in many forms of motor sports have realized the ease of use and sealing
benefits provided by these products.


The blue side seals were re-tooled for easier installation. Some people were having problems getting them to fit easily, so these have a minute tolerance change to aid in installation.

What I have found best, is make sure the seal retainer is dry, and use 3M 77 adhesive in the side seal grooves. The side seals are then " solid" witht he seal retainer. Hold the seal retainer at a slight angle outward, which will almost " hinge" in the blcok register. You can then stand the seal retainer straight up, then slide it down into position. I like to use a slight spray or coating of Dupont TriFlow on the seal retainer register of the block, and on the side seals themselves. Works like a charm. Make sure to read the instructions on properly aligning the rear main seal. You also DO NOT need to put ANY sealer on the seal ends where they meet! The seals are designed to NOT need that.
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Your work is a reflection of yourself, autograph it with quality.

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#1177833 - 02/14/12 05:20 PM Re: Dvorak Rear main Seal?? [Re: CompWedgeEngines]
mr_340 Offline
master

Registered: 01/20/03
Posts: 3067
Loc: DFW
I stopped by Dan's place on US 301 a couple of years ago. He was laying in a bed in the office. He's definitely had a bad couple of years there. He had to sell off the cars and things to pay the medical bills. I talked to one of the employees there. He seemed like an OK guy, but I guess Dan isn't in shape to do the work like he used to do. You might cut him some slack given the bad turn of events in his life.
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#1177834 - 02/14/12 08:52 PM Re: Dvorak Rear main Seal?? [Re: mr_340]
bonefish Online   content
master

Registered: 11/03/04
Posts: 6329
Loc: s.w.fl
Quote:

I stopped by Dan's place on US 301 a couple of years ago. He was laying in a bed in the office. He's definitely had a bad couple of years there. He had to sell off the cars and things to pay the medical bills. I talked to one of the employees there. He seemed like an OK guy, but I guess Dan isn't in shape to do the work like he used to do. You might cut him some slack given the bad turn of events in his life.


ive been in touch with dan many times in the last few years,without going into detail "bad turn of events" is putting it mildly.dan is a great guy and a true AMERICAN PATRIOT.
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"when people fear the government there is tyrany,when the government fear the people there is liberty." THOMAS JEFFERSON

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