Limits of our motors

[FeaRpb]

What is the limit of the stock mitsu rods?

Say you have a forged crank but stock rods, how much power will those rods hold before bending or breaking?

[mh3kgt]

In for limits of stock rods. I thought it was around 500hp or so, but not positive. I have forged crank and pistons in my block, but still stock rods.

[Caswell239]

Also intrigued. Chris.... Where are you???

[2fnloud]

In for limits of stock rods. I thought it was around 500hp or so, but not positive. I have forged crank and pistons in my block, but still stock rods.

Well we know that the stock rods can hold around 600 HP because Matt DR750's on his 95 maxed at like 623. His engine is stock.

[Unknownvr4]

This is what i was also thinking cause there are stock motors well over 500 not cracking pistons.

Thank you steve for a actual good addition to the thread this time.

As for highest number on a known stock motor, Daves red 97 19t vr4 made 661awhp. But thats all i know of...

[mh3kgt]

Well we know that the stock rods can hold around 600 HP because Matt DR750's on his 95 maxed at like 623. His engine is stock.

Ah true...hmm looks like I'm fine with my plans for the car then. Biggest I'll probably ever go is 19t or DR750's. 15g's right now will suffice tho

[Hammer]

Gasoline is very unforgiving. That said if you mess up even a little bit during the tune process you can and probably will damage the engine. Cracked pistons and spun bearings or broken rods twisted cranks all can happen at around that 500+hp number on cast internals. If you get the tune right the first run and avoid the damage then it can hold 19T power levels as long as you do not get a load of bad gas. Understand you are at the edge of the limit which requires a perfect tune all the time. All it takes is one run slightly out of tune with bad gas or whatever and damage occurs.

E85 is more forgiving on the tune at these power levels and probably can pull more power mostly because of this fact without causing damage. However if you flood the engine with too much E85 you can dilute the oil and still spin bearings. The main difference is not so much the 2 bolt vs the 4 bolt but the forged vs cast issue. Cast cranks just will not stand up for long at over 500 hp levels. Neither will cast rods. I believe some 2 bolts have forged internals. I also believe all 4 bolts are forged not sure though.

You never said if your block was 2 bolt or 4 bolt. But more than that are your crank and rods forged or cast? On 19T's it might run for a while on cast internals but they will not have much longevity if you are pushing over 500hp. All it would take is a bad tune or a bad batch of gas to blow it.

[MR2]

when I said 500 hp ish...I was pretty much indicating what Hammer just said. the 600hp that people quite requires incredible precision and I don't exactly that anyone else will get near that.

if you sit on the bleeding edge expect to get cut.

[IPD]

chris has gotten a 2-bolt to 700whp without bracing. i remember the posts. it was somewhere around 770whp where it started to push bolts.

tell your friend that $50 says that a properly tuned 4-bolt can put down upwards of 800whp on stock internals. granted, you "might" have to run e85 to do it...but it's doable.

[Unknownvr4]

chris has gotten a 2-bolt to 700whp without bracing. i remember the posts. it was somewhere around 770whp where it started to push bolts.

tell your friend that $50 says that a properly tuned 4-bolt can put down upwards of 800whp on stock internals. granted, you "might" have to run e85 to do it...but it's doable.

The only problem with this is that E85 is scarce here and we only have one filling station around here. I believe that station stopped carrying it also. I'll have to do the meth injection route to get around that i believe