What's been the breaking point?

[HondaBob]

Assuming there has been no over revving... at what power level are people breaking the f-series at? Is 400-450whp asking too much from a stock block with arp head studs?

At what point are people breaking stuff due to reaching the mechanical limits of their stock parts?

I just guess I kinda want to know when im starting to push that envelope (you know, the one that self destructs in 5 seconds).

[bcjammerx]

I assume you are you asking on all stock internals? cause the cranks take quite a beating.

[insert name of every member with boost but I won't cause that's too big a list and WAY to easy to find out on your own ]

as to rods and pistons...eh...250...NO ....251...and the closest without going over....

[evil_demon_01]

Assuming there has been no over revving... at what power level are people breaking the f-series at? Is 400-450whp asking too much from a stock block with arp head studs?

At what point are people breaking stuff due to reaching the mechanical limits of their stock parts?

I just guess I kinda want to know when im starting to push that envelope (you know, the one that self destructs in 5 seconds).

ARP head studs are really irrelevant to the question.
Basically it comes down to tuning, you could have an F22 making 50hp and still destroy it with the wrong tune.
Generally said though 400hp is what most people would call the limit.
I don't think anyone has made 400hp on a stock engine and blown it up, then decided to refit another stock engine. Normally a built engine is then fitted.

There are also the unknown potentials too - Mileage, service history, abuse, plus the strange factors - unusual scores in bearings or cylinders, overheated valves, tired piston rings etc.

[HondaBob]

ARP head studs are really irrelevant to the question.
Basically it comes down to tuning, you could have an F22 making 50hp and still destroy it with the wrong tune.
Generally said though 400hp is what most people would call the limit.
I don't think anyone has made 400hp on a stock engine and blown it up, then decided to refit another stock engine. Normally a built engine is then fitted.

There are also the unknown potentials too - Mileage, service history, abuse, plus the strange factors - unusual scores in bearings or cylinders, overheated valves, tired piston rings etc.

I understand all of this.. but you dont generally see 400whp on a stock d16... Normally 230-250 is what you want to stop at b/c you are just at the end of its ability to hold together.

I was just curious when the F-series is in the danger zone with even the most perfect of tunes, and in the healthiest condition.

I mention ARP's because I have already lost a stock head gasket with stock head bolts during an 18psi antilag session.


BTW, whats the most HP anyone has seen from a stock long block f22? Just curious to see if its worth throwing my sc60 on and going for it...

[buckysaccord93]

Turbo90accord - 474 whp/ 380 wtq T66 @24psi F22a SOHC (turbo)

93Accord- Dyno Numbers: 176whp 142tq (natural aspired)


those are two of the highest i found in the perfomance tech section.. i didnt look under nitrous section

[keoni96826]

turbo90accord made 474whp with a built motor but made 315whp with a stock at 14.5psi. i think 300whp should but good enough if you want more you should build your motor or just the bottom end and youll make more easy.

[Boost_Lee]

StraightEdge made 402 whp on a stock f22a with racegas and 20 psi....dont know what happened since then though

[bcjammerx]

What about their crankshafts? Were they stock, modified, aftermarket, and/or customized?

[HondaBob]

What about their crankshafts? Were they stock, modified, aftermarket, and/or customized?

I've never heard of a stock honda crank failing... but I have heard of problems with the eagle cranks breaking, but thats off topic.

In a few weeks, we'll see what I can get out of my f22. I just wanted to know if I get 400 out of it, if i should expect it to grenade due to stressing the parts beyond what they can handle.

Any more people with solid numbers, post up.

[d112crzy]

What about their crankshafts? Were they stock, modified, aftermarket, and/or customized?

I've never heard of a stock honda crank failing... but I have heard of problems with the eagle cranks breaking, but thats off topic.

In a few weeks, we'll see what I can get out of my f22. I just wanted to know if I get 400 out of it, if i should expect it to grenade due to stressing the parts beyond what they can handle.

Any more people with solid numbers, post up.

As long as nothing completely fucking weird happens, stock honda cranks will handle just about anything you throw at them. If you want higher RPM's, I would highly suggest rebalancing them.

I think you could get away with 300-350 on a good tune and have it be a daily driver.

[MRX]

i was willing to push 300-320whp on the setup I was building but if I made any more than that I'd be weary. I think 375-400whp is possible to sustain but it depends on if it's your only daily driver. Like if you have access to other cars to get you around if things don't go as planned.

[WiKKeDV16]

manifold design will play a big role...

the better flowing.. the easier it will be to achieve 400whp (not saying its ur goal) but.. thats roughly what the stock stuff can handle.. for how long? who knows..


if stock rev range is kept.. i dont think nothing too crazy would happen.. probably cracked ringlands would be my first guess as what would happen.. seeing as how it would(i hope) have a good tune..thus.. detonation would be kept to a minimum..

detonation = one of the sources of snapping rods like toothpicks.. they cant handle 20+psi and a pre-ignition ontop of that..


back to the manifold talk.. not only will you achieve good numbers with something that can flow worth a damn.. but.. youll be able to keep egts down.. (protect them ringlands) and also make power as a plus


race gas would be smart.

also.. what turbo are you planning to use when you attemp this??



OT(I swear we have been talking about egt's all week.. lol)

[wed3k]

I've never heard of a stock honda crank failing... but I have heard of problems with the eagle cranks breaking, but thats off topic.

In a few weeks, we'll see what I can get out of my f22. I just wanted to know if I get 400 out of it, if i should expect it to grenade due to stressing the parts beyond what they can handle.

Any more people with solid numbers, post up.

maybe failing by spinning a rod. thats just a clearance and oiling issue.

[turbo90accord]

The stock internaled turboed f22a's almost always fail at the ring lands first. Its inherantly their weakest point under boost.

[bkmc24]

You really got the F bug didnt you? lol
GL with all of this.