BITOG - Dayco Products Q&A

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wwillson

wwillson

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Hello BITOG Members from the team at Dayco Products,

It is GREAT to be a new sponsor for BITOG!

Dayco’s strategic focus is to provide solutions to professional mechanics as well as do-it-yourselfers when it comes to belt drive systems. We spend a considerable amount of time participating in many of the automotive forums and we are very excited to be part of BITOG which we discovered to have some of the most knowledgeable technicians on the web today. No surprise to you, I’m sure.

We therefore would like to give you an opportunity to ask us questions about our products and have them answered by our team of engineers, product managers and entire marketing department. We are prepared to answer all questions concerning our products. So ask away.

The only exceptions we have are proprietary information pertaining to our patented designs and questions concerning our competitors. Our corporate focus is to manufacturer the best parts available and offer solutions to today’s demanding drives. We respect our competitors but guide our business by improving performance and field testing.

Please use this thread only for questions, rather than commentary. If you have specific feedback about Dayco’s products, please give us a call at 1-800-848-7902.


We look forward to receiving your questions!

We will leave this thread open for questions until October 6th and return the answers by October 15th.

Sincerely,

Robert Christy
Director of Marketing for Dayco North America
Dayco Website
 
I have been advised more than once by different people that Dayco belts are more trouble-prone and that Gates or Contitech should be utilized. Can you comment on the failure rates (massive as well as miles/time to a stretch and/or squeal point) and quality assurance of Dayco versus Gates or Continental?

What is the time-life (as opposed to mileage) that a Dayco belt can perform before replacement is recommended? (Important for seldom-used cars)

What is the mileage-life that you design belts to/recommed replacement in general?

For rubber products such as hoses, what dressings (if any) are recommended for either looks or protective qualities from oxidaton, UV, etc?
 
I must say, this is a pleasant surprise! I do have a few questions actually.

1. On my previous cavalier 2.2L was installed one of your poly-cog belts. The belt worked great. But I'm curious, what makes the poly-cog belt special, and better than a standard ribbed belt? I've heard they tend to be noisier than a normal belt ( I only ever owned the car with that belt on it, so I can't compare my own experience).

2. What is the average expected lifespan of a normal serpentine belt? Miles/years.

3. I understand that Dayco has quality in mind, and I do note that most of your products are manufactured in the US, or Canada. The one thing I do also note is that with pulleys in particular, the most important part- the bearing- are made in China. I understand that high quality must also be tempered with an amount of reasonable cost to product. But a good, high quality bearing that is made in US/Canada can't cost that much more than one made in china. For example, I purchased a Dayco belt tensioner pulley for that same cavalier. The pulley that was on it before squeaked when cold and for some time until the bearing was warm, I assume. But the brand new replacement Dayco did the same thing. I don't blame dayco at all, but I do blame the poor quality chinese parts used in so many components today. Would you guys considering switching to a US supplier for your bearings?

Thanks for taking the time to answer our questions guys! Hopefully you start a trend!
 
Welcome and a big THANK YOU for sponsoring BITOG.! I have already checked your website and found some good info. --Oldtommy
 
Thanks for taking the time to answer our questions!

1. Is belt wear linear for the entire life of the belt, or does the wear rate accelerate as wear increases?

2. Does a worn serpentine belt accelerate pulley wear?

3. What causes belt noise?

4. Do you ever recommend belt dressings for noisy belts?

5. How does your Poly-W technolgy outperform your older technologies?

6. How does Poly-W technology compare to the rest of the belt industry?
 
On a vehicle that is used only occasionally, what should the replacement interval be for a belt?

If the belt is not glazed and does not appear to be cracked or dry rotted in any way, is there any reason to replace?

Thanks in advance for taking these questions.
 
Thanks for being a sponsor.People may hear several ways to know when a belt needs replaced,they may hear to go by mileage,time in use,if the ribs are cracked,the belt is glazed etc.

What is the most reliable way to know when it is time to change the belt?
 
Is there a time limit for preventative changing of timing belts or only a mileage one? Is there a way to simulate via heat, ozone etc the wear that time produces, and would you be confident in your belts after even 15, 20 years of infrequent use?

Has new technology, unavailable at the time of engine manufacture, ever been subsequently developed where Dayco would be comfortable suggesting a longer-than-OE-spec change interval? (As an example I believe early VW TDIs had a 40k interval but then later VW made a change allowing longer belt changes.)

What's a good cleaner to get that talc/rubber smell off one's hands after handling new hoses?
 
It's my understanding that Dayco is an OEM supplier of belts and hoses. Can you comment on any specifications differences of a Dayco provided OEM product vs Dayco aftermarket product for a given application? I assume Dayco aftermarket line is intended to meet OEM specifications but is standardize to increase value. I must admit that a few times in the past I have observed what appeared to be an OEM Dayco product seem to be better quality than the equivalent Dayco aftermarket.
 
Does Dayco make any "house" brand belts/hoses? If so,how can a person know which are made by Dayco without contacting the Dayco company? You can hear all kinds of things at a parts store and many times,it isnt correct.
 
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On my S-series Saturn I have a Dayco belt and now a Dayco tensioner.

How come on your tensioners you use a 15mm bolt instead of the factory 14mm? Also, why don't you make it the same size pulley as a factory unit. After installation of your tensioner, it was a 2 person job to get the belt on all the pulleys because there was minimal slack. Even both of us struggled to get it put on, it would seemingly be a nightmare to pop a belt on the roadside somewhere. And this was with a belt with 10000 miles so I cannot imagine getting a brand new belt on there with your tensioner. To be fair though, it is running beautifully and I've heard the Gates unit would squeal even when new, so it seems I got the lesser of two evils.

thank you
 
I wish I could talk Dayco to make and sell me, a hard to find, timing belt. Application: A '94 Cushman Truckster (golf cart vehicle). Has a 3 cylinder, liquid cooled, Daihatsu engine.

I need either a 5/8" Belt. Part# 833452 OR a 3/4", Part #836962. These are belts with rounded teeth.

Gates won't help me. I hope you are more capable or willing.
 
Does spray lubricant (such as WD-40 or similar) cause negative effects to belt life or deteriorate the belt?
 
Thanks for the questions, we'll get them answered and back to you as soon as possible.

Wayne
 
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