just because u can run 7k rpms doesnt mean u shoul

[IsaacHayes]

Yeah the ricer mentality with high RPMs I've seen first hand from a lot of people I used to know. They would take their stock (insert import here) car and rev it to like 8 grand... No engine work at all, maybe a WAI and a fart can... LOL. Why they thought that was healthy for the engine or accomplished anything was beyond me. These cars did not have rev limiters and they were exceeding the red line by a large margin.

Nothing wrong with a high revving engine, but I prefer to have a more streetable car that doesn't have to have the piss revved out of it to reach the powerband and start going.

[ForcedFirebird]

while all of that is true and proven, have you ever seen a mx-3 built to actually make power at 7000+ RPM? all i see are ricers, thinking "wow, i can hitz 7000 RPMz?" and they do, when they don't have any kind of head/cam work done, which means running the engine that high is slowing them down and wearing the living shit out of their motors. i consider that RICE-A-FUCKIN-RONI!

...

Issues who has a 3500 swapped into a Corsica told me the other day he had his up to 8500-9000 once and yes the valves were floating but it survived... LOL

And throwing on a turbo on a 4 banger kind of defeats the purpose of the N/A discussion... A turbo will help any motor in the upper RPMs... And yeah there are some high power N/A 4 bangers, but they rev to like 8-9 grand... No thanks.

OK, how abut a 60 degree v6 import N/A?

http://www.youtube.com/watch?v=AACd9YZlh5E

A little lesson in physics...

Torque is produced by the mechanical, axial (twisting)force converted from thermal combustion. The axial force must overcome the inertia of the standing body since inertia is the force that retains the state of motion and is impacted by velocity

Torque in an engine will continue to increase with velocity until mechanical and thermal coefficient loss is equall to the energy produced by combustion.

If an engine has been built with enhanced breathing, better thermo-efficiency and sufficient fuel delivery, then coefficient loss is minimized.

An engine's horsepower is measured by its peak "power-producing" speed (rpm) x peak torque (ft/lbs) / 550. This means that total power output in an efficiently aspirated and well fueled engine will increase with higher speeds.

Now that the lengthy explanation out of the way, what is exactly wrong with building a high revving engine?

How is this so "rice" as you put it?

John, I believe you meant divided by 5500 RPM's

[Driver_10]

while all of that is true and proven, have you ever seen a mx-3 built to actually make power at 7000+ RPM? all i see are ricers, thinking "wow, i can hitz 7000 RPMz?" and they do, when they don't have any kind of head/cam work done, which means running the engine that high is slowing them down and wearing the living shit out of their motors. i consider that RICE-A-FUCKIN-RONI!

True... High-revving an engine for the sake of high-revving is pointless. But an un-conventional engine that has been built to handle and make power at such a high rpm is unique.

Ive gone as far as to destroke my 3500 combo to attain a safe, "constant" red-line of 7500 rpms with 8000rpm spikes w/out valve float. The cam and internal components are all made to match the power requirements as well.

[robertisaar]

...




OK, how abut a 60 degree v6 import N/A?

http://www.youtube.com/watch?v=AACd9YZlh5E

completely unstreetable. listen to that thing, it probably needs about 4 grand just to launch without stalling.

[robertisaar]

True... High-revving an engine for the sake of high-revving is pointless. But an un-conventional engine that has been built to handle and make power at such a high rpm is unique.

Ive gone as far as to destroke my 3500 combo to attain a safe, "constant" red-line of 7500 rpms with 8000rpm spikes w/out valve float. The cam and internal components are all made to match the power requirements as well.

right, and how many people do you know of that actually take the time to do this to... hell anything? these days its all bolt ons. occasionaly, you'll have someone(like you and other board members) who take the time to do it right.

[Driver_10]

right, and how many people do you know of that actually take the time to do this to... hell anything? these days its all bolt ons. occasionaly, you'll have someone(like you and other board members) who take the time to do it right.

Now Im blushing... I guess Ill have to agree with you on that note.

[ForcedFirebird]

right, and how many people do you know of that actually take the time to do this to... hell anything? these days its all bolt ons. occasionaly, you'll have someone(like you and other board members) who take the time to do it right.

I know of a few on this board

Although I'm personally happy with a 7k redline with high compression and moving massive amounts of air (no N/A here)

You would be surprised with ITB's, proper cam and parts selection that an engine like what I posted can actually run on the street. Don't forget it's a 4v engine If you click on the related videos you can se it's actually quite tame...

We have some ITB e30's in the community (2.5-2.8 I6) that will eat 8k RPM for breakfast while being only slightly cammed.

[Driver_10]

completely unstreetable. listen to that thing, it probably needs about 4 grand just to launch without stalling.

It sounds bloody brilliant. It sounds like an F1 car!

[robertisaar]

It sounds bloody brilliant. It sounds like an F1 car!

i never said it sounded horrible, but it sounds like it wouldn't like street driving... Forced has said otherwise, but individual throttle bodies, a cam that makes power that high into the RPM range.... it just doesn't seem possible. is there any kind of VVT or something similar run on those engines? that would explain being able to go from tame to stupid-fast on the same motor.

[TiredGXP]

Just because you can click this button: doesn't mean that you should

One of the best posts I've seen all day

[SappySE107]

This is far too in depth for a no_doz thread.

[pocket-rocket]

That mean your going to close it soon?

[asylummotorsports]

fixed it for ya...

You guys ever met a Quad?

It was actually the quickest/fastest production Beretta.

And at 7000 RPM they make lots of power.

[pocket-rocket]

My aunt had one of the little mid-late 80's Olds Cutlass 442's with a Quad 4 in it, but I don't think it was the HO. That thing was pretty quick.

[sprucegagt]

This is far too in depth for a no_doz thread.

That's because no doz is not active in it. Let him chime in a couple times and once again stupidity will reign supreme.