lyonnate23

iTrader: (1)

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?

concealer404

iTrader: (3)

Answer: TDR often doesn't know what they're talking about.

Run a Powercard and an aluminum crank pulley! What could possibly go wrong?

18psi

iTrader: (76)

lol dis gun be guud

18psi

iTrader: (76)

the oil pump gears will balance everything out when they shatter

lyonnate23

iTrader: (1)

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.

concealer404

iTrader: (3)

TDR doesn't build race cars/engines.

lyonnate23

iTrader: (1)

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!!!!

concealer404

iTrader: (3)

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.

lyonnate23

iTrader: (1)

What is it exactly that you have seen from TDR that would lessen their reputability?

concealer404

iTrader: (3)

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.

matrussell122

iTrader: (1)

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

Savington

iTrader: (31)

The product you linked to.

concealer404

iTrader: (3)

Damn. That was way less work than my posts.

Stealth97

iTrader: (5)

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.

Savington

iTrader: (31)

They are wrong. Incredibly, hilariously wrong.

Because TDR is stupid and most people are not.

Yes.

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

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

concealer404

iTrader: (3)

I'd run it on mine for about $2000. That's what i need to finish my new motor i think. Give or take.

lyonnate23

iTrader: (1)

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.

nitrodann

I think he bought it used when he was less knowledgeable, that's how I read it.

lyonnate23

iTrader: (1)

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.

concealer404

iTrader: (3)

...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.