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TDR Aluminum Crank Pulley vs ATI Damper

Old 10-24-2018, 06:35 PM
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Default TDR Aluminum Crank Pulley vs ATI Damper

I have been doing a bit of research and cannot seem to find the answer to my question. The TDR Crank Pulley seems to be constructed in a solid aluminum design with no dampener whatsoever. They claim that, "These engines are internally balanced and this process has improved even further since the 90s. So the description of a BALANCER does not apply to the Miata motor.". If this is true then why is it that so many people spend the extra $500 to build their engines using an ATI Harmonic Balancer ? Have people cracked their oil pump gear because they were using the TDR Crank Pulley?
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Old 10-24-2018, 06:39 PM
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Answer: TDR often doesn't know what they're talking about.

Run a Powercard and an aluminum crank pulley! What could possibly go wrong?
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Old 10-24-2018, 06:39 PM
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lol dis gun be guud
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Old 10-24-2018, 06:40 PM
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the oil pump gears will balance everything out when they shatter
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Old 10-24-2018, 06:48 PM
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This is why I am asking this question now; You know, before I spin a couple of bearings from a sudden loss of oil pressure. I'm definitely not siding with Track Dog Racing automatically. They appear to be a reputable vendor and for them to stand firmly by this product I have to wonder if they're correct. Thus, why I came here to see if a solid aluminum structure is equivalent to a death sentence of an engine.
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Old 10-24-2018, 06:54 PM
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TDR doesn't build race cars/engines.
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Old 10-24-2018, 07:26 PM
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Originally Posted by concealer404 View Post
TDR doesn't build race cars/engines.
That may be true, but I highly doubt that they would sell a product without first testing their product. I could be wrong though! And I'm not assuming anything. I'm just looking for people who have tried this pulley themselves and I want to hear their experience. If I don't hear anything maybe I'll test it and report back so other people can learn of my success/failure. For science!!!!
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Old 10-24-2018, 07:27 PM
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Originally Posted by lyonnate23 View Post
That may be true, but I highly doubt that they would sell a product without first testing their product. I could be wrong though! And I'm not assuming anything. I'm just looking for people who have tried this pulley themselves and I want to hear their experience. If I don't hear anything maybe I'll test it and report back so other people can learn of my success/failure. For science!!!!
Nobody here has tried it, because we have brains. It would behoove you to trust and not test it yourself.

I've seen firsthand some work that TDR has done. I wouldn't doubt in the slightest they would sell a product they've never truly tested.
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Old 10-24-2018, 07:51 PM
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Originally Posted by concealer404 View Post
Nobody here has tried it, because we have brains. It would behoove you to trust and not test it yourself.

I've seen firsthand some work that TDR has done. I wouldn't doubt in the slightest they would sell a product they've never truly tested.
What is it exactly that you have seen from TDR that would lessen their reputability?
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Old 10-24-2018, 07:53 PM
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Originally Posted by lyonnate23 View Post
What is it exactly that you have seen from TDR that would lessen their reputability?
A 1993 Miata that they did many thousands of dollars "worth" of work on that i owned briefly before i decided they had messed it up too badly to bother resurrecting. They don't know how to wire things properly, how to tune, or how to install a PNP megasquirt without butchering a harness.

Oh, and the motor that they/their farmed out machine shop built lasted less than 1000 miles before breaking a rod. Then they spent a long thread arguing with me that setting up a target AFR map that commanded 14.5:1 under load was perfectly fine and normal.

I'm good, fam.
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Old 10-24-2018, 07:57 PM
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Think of it this way. Tdr is in how many race cars across the country? now ask the same question about ati. Just a guess but ati is probably going to have a few hundred thousand more units in the market
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Old 10-24-2018, 07:57 PM
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Originally Posted by lyonnate23 View Post
What is it exactly that you have seen from TDR that would lessen their reputability?
The product you linked to.
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Originally Posted by codrus View Post
Basically I've come over to the camp of "If something is a reliability problem on the track, just ask Andrew and do what he says".
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Old 10-24-2018, 07:58 PM
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Originally Posted by Savington View Post
The product you linked to.
Damn. That was way less work than my posts.
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Old 10-24-2018, 08:04 PM
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I wouldn't run that pulley on my engine if you paid me. Modern engines not needing a balancer.. had my chuckle for the day.

For some history... search unorthodox racing. Those pulleys destroyed countless miata engines.
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Old 10-24-2018, 08:05 PM
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Originally Posted by lyonnate23 View Post
They claim that, "These engines are internally balanced and this process has improved even further since the 90s. So the description of a BALANCER does not apply to the Miata motor."
They are wrong. Incredibly, hilariously wrong.

If this is true then why is it that so many people spend the extra $500 to build their engines using an ATI Harmonic Balancer ?
Because TDR is stupid and most people are not.

Have people cracked their oil pump gear because they were using the TDR Crank Pulley?
Yes.

14 days ago:
https://www.miataturbo.net/engine-pe...ageable-98282/

Originally Posted by poormxdad
I believe I grenaded the oil pump in my '99 HPDE car, but I have not had the time yet to survey the damage. For sake of discussion, let's assume I'm right. The oil pressure went to zero, but there are no holes in the block or pan, and there was no vibration like from a bent rod. Just a horrible grinding noise.

...

Stock oil pump. 80k+ miles on the used, JDM import engine bottom end. ... I just upgraded to a six rib belt and crank pulley from TDR.
Hey poormxdad , TDR owes you a bottom end.

10 years ago, a common eBay mod was to replace the OEM harmonic damper with a solid aluminum unit to save weight. Oil pump failure was virtually assured within 1000 miles of installation. History repeats itself.

e: ^^Yep, it was Unorthodox. I didn't remember the brand name. Search for "unorthodox racing oil pump failure" for some great reading.

https://forum.miata.net/vb/showthread.php?t=173225
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Originally Posted by codrus View Post
Basically I've come over to the camp of "If something is a reliability problem on the track, just ask Andrew and do what he says".
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Old 10-24-2018, 08:05 PM
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I'd run it on mine for about $2000. That's what i need to finish my new motor i think. Give or take.
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Old 10-24-2018, 08:29 PM
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Originally Posted by concealer404 View Post
A 1993 Miata that they did many thousands of dollars "worth" of work on that i owned briefly before i decided they had messed it up too badly to bother resurrecting. They don't know how to wire things properly, how to tune, or how to install a PNP megasquirt without butchering a harness.

Oh, and the motor that they/their farmed out machine shop built lasted less than 1000 miles before breaking a rod. Then they spent a long thread arguing with me that setting up a target AFR map that commanded 14.5:1 under load was perfectly fine and normal.

I'm good, fam.
I'm confused, Concealer. If you spent thousands of dollars of work on an engine and decided to run said engine despite knowing it was improperly wired and improperly tuned I have to question your credibility. Please understand that I'm not to talk **** here. It is just that if I spent thousands of dollars building an engine I would make damn sure that everything was wired and built properly to my knowledge despite the information anyone else let me on to believe. I would never blame anyone else for my shortcomings.
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Old 10-24-2018, 08:41 PM
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I think he bought it used when he was less knowledgeable, that's how I read it.
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Old 10-24-2018, 08:46 PM
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Originally Posted by nitrodann View Post
I think he bought it used when he was less knowledgeable, that's how I read it.
Could be true. But my point still stands, I would still do the research amongst the Miata community and come to my OWN conclusions. This forum and useful information has been here for over a decade; Definitely long enough to gather reputable information.
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Old 10-24-2018, 08:48 PM
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Originally Posted by lyonnate23 View Post
I'm confused, Concealer. If you spent thousands of dollars of work on an engine and decided to run said engine despite knowing it was improperly wired and improperly tuned I have to question your credibility. Please understand that I'm not to talk **** here. It is just that if I spent thousands of dollars building an engine I would make damn sure that everything was wired and built properly to my knowledge despite the information anyone else let me on to believe. I would never blame anyone else for my shortcomings.
...What?

I didn't wire the car. I didn't tune the car. I didn't build the motor.

I have no shortcomings. I am perfect.

I acquired the car after it exploded. I came to my own conclusions after seeing the work that was done. No further research required. I'm not sure what you're trying to teach me, i don't have any questions in this thread.
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