Sweet !New Striker Heads and Jesel Rollers have arrived in NZ
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And now my watch begins.
Well that’s ugly .. were those out of stock engines ?Random Oil Pump gear failures. John has said there must be a problem with heat treatment for these to fall apart like they do.I am not going to take any risks. They make better ones that are for extreme race engines. 9000rpm safe.
That's me
There are 4 examples. That is 4 too many for me.
Random Oil Pump gear failures. John has said there must be a problem with heat treatment for these to fall apart like they do.I am not going to take any risks. They make better ones that are for extreme race engines. 9000rpm safe.
That's me
There are 4 examples. That is 4 too many for me.
Why would these gears fail? Why would they make aftermarket gears if OEM are fine?I've torn down more of these than I can count and never seen a oil pump gear failure like that! Most common failures I see are spun bearings (from low oil level) or dropped valve seats. Boundary does make a nice set of aftermarket oil pump gears though!
Why would these gears fail? Why would they make aftermarket gears if OEM are fine?
Would make no difference to an oil pump if the engine had 500hp or 1000hp
Maybe just high RPM is the culprit. Extreme engines I have heard of 9000rpm 1500hp NA. Only heard of but never seen. Not that many in NZ.
Either way I am not going to take a risk. I am certainly not going to see 9000rpm either.
If I have a failure after this engine build it will end up at the scrap dealers and I will be stuck working until I am 70 to pay for the loss.
I'll buy a 1986 Toyota Corolla instead
Consider an engine that makes a lot more torque than another. The engine with more power (more torque) has the ability to accelerate the crank (and our crank-mounted oil pumps) quicker than the other. There is CONSIDERABLE resistance from the oil in the pump and that which is trying to move through the engine. And because liquids don't compress, the torque required to turn the pump full of oil through the engine is considerable.
If the engine was slowly revved up, it is much easier on the pump than being hit with massive torque in a short time.
But yes, if say a 500 horsepower engine and a 1000 horsepower engine were both at 6500 rpm (pretending that both were making their maximum power output), both pumps are simply going along for the ride at that point in time. Neither would care how much power the engine was making. Other than moving the oil through the pump and engine, there isn't a sudden increase of force on either. The resistance by the oil inside the pump and engine areas fed by the oil is now steady-state.
Accelerating the more powerful engine from a lower to a higher r.p.m. quickly, places much greater strain on the pump.
I hope this makes sense.
I agree, but most likely from high reving engines.No, just offering an explanation as to why the pumps could fail.
I agree, but most likely from high reving engines.
I can't afford to take the risk
Yes it will be interesting. Should be strong enough. Build for 1000hp strength and run at maybe....700hpI don't blame you. The SRT4 Neon's (also powdered-metal oil pump gears) would also pack it in on the more heavily modded engines.
There's a great deal to consider when you start re-engineering an engine or other associated equipment once the power goes up.
From JohnIt sounds like you have gone to a builder that knows how to do things properly. Ask lots of questions, it's a fun hobby.
It does take considerable resources to do it right but you'll have a 725+ horsepower engine without power adders or additional "stuff" to worry about. All motor is an expensive way to go (dollar per horsepower), but has the most reward, I think.
Speaking of spending more than you planned, high-end audio (another hobby of mine) is on another spending plane of existence!
As long as we're having fun.
From John
We don’t want to go to aggressive on cam profile due to weight of the truck. Need to keep bottom torque to move the weight.
Something in that 232 238 @.050 or 238 [email protected] .634 .622 lift area 114 or 115 +4