Help me understand the oil pump gear debate

[GreenS550]

Believe it or not, you guys made the argument! I called LMS and told them to do it. 1400-1500$. Steve at LMS told me that they will also tune the car differently. He said about 30 more hp and higher rpm shift points.

I was playing devil's advocate to see the response.

Thanks! Also getting a quote on half shafts.

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[ahl395]

Believe it or not, you guys made the argument! I called LMS and told them to do it. 1400-1500$. Steve at LMS told me that they will also tune the car differently. He said about 30 more hp and higher rpm shift points.

I was playing devil's advocate to see the response.

Thanks! Also getting a quote on half shafts.

$1500 is better than the possibility of a $7k+ motor :cheers:

 

[GreenS550]

Because I am saving so much on the blower,etc. I will be all in with tax at $7,575 including Magnuson SC, gears/sprocket, etc. This is less than I paid for just the Roush blower in 2013. I am hoping for 600 rwhp. The axles I'm still thinking about.

 

[ahl395]

Because I am saving so much on the blower,etc. I will be all in with tax at $7,575 including Magnuson SC, gears/sprocket, etc. This is less than I paid for just the Roush blower in 2013. I am hoping for 600 rwhp. The axles I'm still thinking about.

If you're on street tires, I wouldn't worry about them. The tires will usually spin long before the axle has enough torque on it to break.

If your taking it to the strip and/or running drag radials, I would upgrade them now rather than break them later, have to get towed, and then upgrade anyway.

 

[GreenS550]

If you're on street tires, I wouldn't worry about them. The tires will usually spin long before the axle has enough torque on it to break.

If your taking it to the strip and/or running drag radials, I would upgrade them now rather than break them later, have to get towed, and then upgrade anyway.

I'm looking at your signature. Is the A6 up to say 580-600 rwhp?

 

[ahl395]

I'm looking at your signature. Is the A6 up to say 580-600 rwhp?

The A6 can take even more than that usually. It's rated for 590 ft/lbs of torque. Many people push way more than that without problems.

Personally I broke my torque converter at around 650whp so that is why I upgraded to a Circle D, billet intermediate shaft and clutches. Now hoping to be around 800whp. But its pretty rare, I've only seen a few other occurrences of the converter breaking.

 

[EFI]

For a 100% stock engine that is not abused and with the stock rev limiter the OPG gears are perfectly fine and work on 99.99% of those cars. Ford has NO reason to improve a part with that kind of reliability rate. They are not in the business to make parts that survive 2x the power and an extra 1000rpm or for users that bounce off the rev limiter constantly (which is what breaks these).

Oil pump gears have been breaking on stock and modded Mustangs since at least 1996. Nice to know that 22 years later they are still a weakpoint.

 

[turbojay]

Ford uses billet opg’s (tss?) and an ati balancer on their cobra jets. That’s a good enough reason to use those same parts on my car.

 

[GreenS550]

There we go. An official Ford endorsement!

 

[Taneras]

If you're staying NA, you're likely completely fine as long as you're not revving beyond 7,500-7,800 and banging off the limiter, and/or 2 stepping it at much higher than what the stock launch control (manual cars) allows. Supposedly the OPG is good to 8k RPM NA (or power levels where cylinder pressures aren't dramatically higher like a boosted car).

Just a heads up, Lund places the GT350 manifold GT's at 7750, and I'd imagine the Cobra Jet manifold GT's are much the same.

Based off this I'd imagine up until this level the OPG should be fine. Still, nothing with high horsepower engines is a guarantee. I wish I had the cash to just throw a bulletproof motor in my car that way I could beat on it as much as I want and have no worries :lol: I already know the 6 speed auto is pretty much bulletproof for most anyone's build.

 

[ahl395]

Just a heads up, Lund places the GT350 manifold GT's at 7750, and I'd imagine the Cobra Jet manifold GT's are much the same.

Based off this I'd imagine up until this level the OPG should be fine. Still, nothing with high horsepower engines is a guarantee. I wish I had the cash to just throw a bulletproof motor in my car that way I could beat on it as much as I want and have no worries :lol: I already know the 6 speed auto is pretty much bulletproof for most anyone's build.

Not trying to rain on your parade, but as I said above I broke my 6R80 torque converter at ~650whp. It's not very common but a few others have too. You should be fine but it's worth knowing the possibility of it not being bulletproof.

 

[Mikecoyotegen3]

If you're doing a power adder, do it. Very cheap insurance on the $5-8k you just spent.

If you're staying NA, you're likely completely fine as long as you're not revving beyond 7,500-7,800 and banging off the limiter, and/or 2 stepping it at much higher than what the stock launch control (manual cars) allows. Supposedly the OPG is good to 8k RPM NA (or power levels where cylinder pressures aren't dramatically higher like a boosted car).

I was wondering this exact thing, I'm ess g3 6sp manual s550, was wondering if I can use launch control still, or just keep pedaling the launches.

 

[SnowFox]

It's my understanding that the problem arises at high horsepower levels and/or high RPM levels.

I don't think these are really a problem for stock/near stock engines.

This. I e rarely heard about this issue in stock form.

People apply horsepower till something breaks then say they fond a design flaw I joke but some people think this way.

 

[engineermike]

I’ve found that two of the biggest suppliers of tuning for some time was setting the hard rev limiter (fuel cut) lower than the soft limiter (throttle cut). That isn’t how ford or Roush does it and I can’t help but wonder if that caused any of these failures.

 

[jcm3]

Old thread, but what oil pump gears does Ford install in the GT500's?

Searches haven't returned much good info.

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