lol good to know
So this car is really not so overbuilt from the manufacturer compared to something like a Supra outfitted with a 2JZGTE. 165 whp/130ish wtq is about stock and what the car is engineered for with a fairly generous safety margin.
To simplify, you can expect:
Add 25% ( to those numbers everything else remaining the same with pretty low risk.
Add 50% - well tuned FI solutions on pump gas start around the 50% gains mark. Everything else buttoned up, well tuned, driven realistically, reports most cars work reliably, albeit you are well out of the design envelope for the car. Clutch life will be noticably shortened, and possibly malfunction depending on your torque curve.
Beyond that you have increasing risk - 100% increase you're at considerable risk of internals failure (again depending on torque curve, driving habits etc). Some motors hold. Some don't. IMHO it's a matter of time and you're no longer budging for motor longevity but rather budgeting considering a motor being a consumable item.
This is also assuming things are done right - supporting mods. Increased heat with power. Increased risk of catastrophic failure due to increased complexity (i.e. overboost, header/cat failure due to heat/pressure, etc.), lack of cooling, on and on. This probably is obvious to you but so many people neglect this part, and this makes a big difference in outcome when pushing a design 2x it's output.
Quote:
Originally Posted by 86MLR
I like hard numbers from manufacturers, they usually add in a safety factor, from their hard number I can set some goals and expectations.
Goal: max safe(ish) torque level so I'm not eating gearboxes.
Expectations: parts should last a reasonable time, I'm happy to replace parts, but the box must last
As for the clutch, I don't know what the OEM clutch is rated to torque wise, but, a clutch will be chosen by going a bit less in rating than what the box can take, I would rather my clutch be the fuse.
Yeap, any muppet can break parts from abuse.
This muppet just wants to get some info based on sound engineering principles to try and improve the performance whilst still retaining some form of reliability.
Yes, I will be going full throttle rowing through the gears and doing skids.
Maintenance is a given
Nothing lasts forever, especially when power ratings are exceeded
This ain't my first rock show
Thanks for the data
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