Professional Products damper ?....
Thread Starter
Racer
Joined: Sep 2010
Posts: 305
Likes: 2
From: Epfenbach BW
Professional Products damper ?....
Hi,
I have just finished my Timing Set/ Harmonic Balancer replacement.
As for the balancer I ordered a Dorman 594012S but in the Dorman package was a Professional Products damper.
It looks fine and I installed it but I was wondering if Dorman sells repacked Professional Product dampers.
They used to have a bad reputation, but I hope I will be fine as I have a mostly stock L98.
Any comments?
Thanks
I have just finished my Timing Set/ Harmonic Balancer replacement.
As for the balancer I ordered a Dorman 594012S but in the Dorman package was a Professional Products damper.
It looks fine and I installed it but I was wondering if Dorman sells repacked Professional Product dampers.
They used to have a bad reputation, but I hope I will be fine as I have a mostly stock L98.
Any comments?
Thanks
Thread Starter
Racer
Joined: Sep 2010
Posts: 305
Likes: 2
From: Epfenbach BW
Hm...that sucks big time....
I will have to keep an eye on it. Can´t send it back as that would be to expensive from Germany.
I wanted to get a higher quality than the 30$ stock units.....just for my PEACE OF MIND!!! Should have bought the 27 $ standard replacement.....
I will have to keep an eye on it. Can´t send it back as that would be to expensive from Germany.
I wanted to get a higher quality than the 30$ stock units.....just for my PEACE OF MIND!!! Should have bought the 27 $ standard replacement.....
Thread Starter
Racer
Joined: Sep 2010
Posts: 305
Likes: 2
From: Epfenbach BW
Is there any danger in keeping it on?
I´ll have an extra eye on it. Changing it is not the problem as I now have the tools and the job was quite easy, but I would hate it to buy another one now.
Btw. heating the damper in a pot of hot water (damper in plastic bag) made the installation a breeze.just FYI
I´ll have an extra eye on it. Changing it is not the problem as I now have the tools and the job was quite easy, but I would hate it to buy another one now.
Btw. heating the damper in a pot of hot water (damper in plastic bag) made the installation a breeze.just FYI
Race Director
Joined: Jan 2000
Posts: 12,399
Likes: 247
From: San Jose CA
Keep an eye and an ear on it. He used the "SFI approved" damper and it slipped right off after a short period. Think he said it sounded like a knock.
I think you'll hear it before any damage is done.
I think you'll hear it before any damage is done.
Thread Starter
Racer
Joined: Sep 2010
Posts: 305
Likes: 2
From: Epfenbach BW
Hmm...ok I will give the damper a chance. As far as I can see it is the 80000 series.Don´t know if SFI approved or not.
My engine mostly sees everyday driving and seldom high revs over 3.5K.
Maybe it holds up for a while....
Thanks
My engine mostly sees everyday driving and seldom high revs over 3.5K.
Maybe it holds up for a while....
Thanks
Le Mans Master
Joined: May 2004
Posts: 5,866
Likes: 60
From: Hellinois
Finalist 2020 C4 of the Year - Modified
Well, I've had my PP balancer on the engine now for almost 4 years with no problems, BUT, now that this thread has scared the hell out of me I will be watching it. Really, my balancer has been fine on my 383 that I beat hell out of.
Race Director
Joined: Nov 2003
Posts: 12,221
Likes: 446
From: Overland Park Kansas
2020 Corvette of the Year Finalist (appearance mods)
C4 of Year Winner (appearance mods) 2019
After everthing I read/heard about PP dampers, I refused to mount mine. I sent mine back and paid more to upgrade. I doubt it's SFI comliant as NONE of the other 80000 series are. (Basically, that means it's not proven to last at very high rpms.)
I even had to pay a restocking fee to the buttheads (CNC-Motorsports) who didn't know other dampers would fit a C4 vette. Bottom-line: I won't use PP balancers, nor will I use CNC-Motorsports again. (FWIW, CNC-Motorsports didn't even know if there was another brand of 6.5" balancer for ext balance motors -- even though I later learned they carried them. And, they charged me restocking for an upgrade....Douchbags.)
I even had to pay a restocking fee to the buttheads (CNC-Motorsports) who didn't know other dampers would fit a C4 vette. Bottom-line: I won't use PP balancers, nor will I use CNC-Motorsports again. (FWIW, CNC-Motorsports didn't even know if there was another brand of 6.5" balancer for ext balance motors -- even though I later learned they carried them. And, they charged me restocking for an upgrade....Douchbags.)
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Safety Car
Joined: Nov 2009
Posts: 3,973
Likes: 341
From: Adelaide South Australia
while we're on the subject of balancers, I have been looking around coz i have to replace mine soon,
with the '85 (and other early c4) do i need an internally or externally balanced one ?
with the '85 (and other early c4) do i need an internally or externally balanced one ?
Thread Starter
Racer
Joined: Sep 2010
Posts: 305
Likes: 2
From: Epfenbach BW
Ok, I just emailed RockAuto, where I bought the balancer.
They say I can send it back and get a full refund including shipping.
Needless to say, I will send it back once I received the replacement.
Any recommendations on a slightly - better-than-stock replacement?
They say I can send it back and get a full refund including shipping.
Needless to say, I will send it back once I received the replacement.
Any recommendations on a slightly - better-than-stock replacement?
Thread Starter
Racer
Joined: Sep 2010
Posts: 305
Likes: 2
From: Epfenbach BW
Le Mans Master
Joined: May 2004
Posts: 5,866
Likes: 60
From: Hellinois
Finalist 2020 C4 of the Year - Modified
Will most likely buy this one: http://www.summitracing.com/parts/SUM-C4265/
Thread Starter
Racer
Joined: Sep 2010
Posts: 305
Likes: 2
From: Epfenbach BW
Now that you say it, they sure look similar in some places....
Jesus this is tough....how hard can it be to find a decent damper without paying hundreds of $$$....
I hate it that everything is made in China nowadays. It would not be a problem if they at least TRIED to do a good job.
Maybe it won´t make a difference ar all if I change the PP damper now. Chances are the next one is als China crap.
I just don´t want to spend 200+ for a balancer on a stock motor.
Jesus this is tough....how hard can it be to find a decent damper without paying hundreds of $$$....
I hate it that everything is made in China nowadays. It would not be a problem if they at least TRIED to do a good job.
Maybe it won´t make a difference ar all if I change the PP damper now. Chances are the next one is als China crap.
I just don´t want to spend 200+ for a balancer on a stock motor.
Melting Slicks
Joined: Sep 2010
Posts: 2,422
Likes: 202
some knock offs are fine.... I would not Purchase from PP again
they have great support & replacement... but now you have shrapnel in your block!!! not worth the few bucks you thought you saved!!!!
I picked up a set of there Aluminum RR
a few years ago the needle bearings destroyed there horrific hardened fulcrums & the Poly locks chipped on the edges....
they have great support & replacement... but now you have shrapnel in your block!!! not worth the few bucks you thought you saved!!!!
I picked up a set of there Aluminum RR
a few years ago the needle bearings destroyed there horrific hardened fulcrums & the Poly locks chipped on the edges....
- 1986 Original Owner -
Joined: Apr 1999
Posts: 3,193
Likes: 139
From: North Yorkshire, England
Cruise-In I Veteran
Cruise-In II Veteran
Cruise-In III Veteran
Cruise-In IV Veteran
Cruise-In VII Veteran
Guys, I originally bought this SCAT damper as I'd also heard bad things about PP:
SCA-D-80000
After I got it I thought, well this is the PP damper I was trying to avoid (the 80000 in the part number should have been a clue!). I finally went with the Fluidampr:
FLU-670100
SCA-D-80000
After I got it I thought, well this is the PP damper I was trying to avoid (the 80000 in the part number should have been a clue!). I finally went with the Fluidampr:
FLU-670100
Le Mans Master
Joined: May 2004
Posts: 5,866
Likes: 60
From: Hellinois
Finalist 2020 C4 of the Year - Modified
Like I said, I beat on my car quite often and the PP balancer has been on there for 3 maybe 4 years now with no problems. I emailed an ebay seller I bought my engine internals from, a great seller who will not sell junk. He said he has had "very few problems" with PP balancers and "for the money, are as good as your going to get".
I'm leaving mine alone but I will continue to watch it, like previous posters have said, if it starts to go bad you will hear it.
I'm leaving mine alone but I will continue to watch it, like previous posters have said, if it starts to go bad you will hear it.