Iīve a question:

There is a guy in Austria who does drive the ITR in a kind of Integra cup. He says that he revs up to 11000 rpm with the stock valve springs and is using the stock camshafts too. WTF, I thought the stock cams donīt produce any power above 9000rpm. Reving up to 11000rpm with the stock valve springs?!?! He said no problems! I canīt imagine that. The engine must go KABOOOM with all the stock parts and those hegh revs adventures.

Can this be true?!


[Modified by austrian ITR, 2:02 AM 10/9/2001]

 

11000 rpm is impossible. There are a few members here that have bent their valves due to misshifting. And they hit 10000 rpm or so.
And the power curve drops after 8000 rpm. It could be handy if the engine revs op to 10000 rpm even when the power is dropping. In this case you can shift later and stay as close to 8000 rpm as possible...

 

Do you still have your sideskirt (seen on the pictures from your site)? Looks odd without front and rear kits.....

 

Ive seen one honda hit 11,000 safely, and that was the fully built Spoon EK9... I almost nutted my pants when i saw the guy shifting over 10k !

 

And that's certainly not with stock valvetrain.........

 

a CTR may have a better chance ... either way, the guy is not really telling you everything, such as regrinding the stock cams to make power up that high while also reducing the lift on the cams - its still stok cams with "Endurance" spec. Obviously he had an external oil pump or the Endurance kit that Honda uses, i.e. on the stock oil pump taking out the hex nut and adapting a kit in there while also changing the gear.

Greg

 

Anything is possible.

 

I wouldn't doubt that it is POSSIBLE. But what would be the point of it?
You already see how hard the torque starts to drop after 8400rpm. So I would imagine at 11,000rpm you would be putting down maybe 60-70 ft/lbs at the wheels.

 

There used to be a Honda made in the 70's or 80's that revved into the 10k range. I really can't remember what it was called, but I remember seeing it on TV once. It wasn't a race car, but a production car not even really geared towards performance.

 

my buddy has a honda that could rev up to 10... but it's a bike.

 

I agree I think it's impossible I revved to 10K once and bent 10 VALVES....so I'm going with impossible on this one

 

It is possible.

He may have a heavily ported head that breathes to 11000, and the use of very light valves can make it possible to rev that high with stock valve springs.
There are couple of drag honda motors that rev that high.

What I would like to know is what clutch does that guy has that can handle that many revs.

 

I did it 5 times in a day and they engine blow up.....

 

I hit the rev limiter on my [t] once, does that count?

 

doesnt the hondata website have a vid of a guy reving over 10 grand?

 

Just the other month i revved my car up to 10grand on stock valvetrain, and kept on revving that high for about 10minutes... I installed a JUN(POS IMO)ECU which allowed me to rev that high... I done that just for fun, and now i regret it... My valve's are ticking like a freaking biotch... Idle is normal still, how i didnt do any damage... Can somebody with experience tell me if there's any internal damage???

 

I hit 11000rpm 5 times and I blew the engine......

Spoon made it up there but the parts required were:

Spoon Block Brace (crank stabilizer elimates vibration during 8000-10000rpm)
Spoon aluminum oil pan (for more lubrication)
Spoon Titanium con-rods
Spoon forged pistons
Spoon cams & valvesprings
Spoon ECU
Spoon specialty (balanced & blueprint)

 

With STOCK ITR parts, it's impossible. Valve float begins at about 9500 RPM, anything more and you're risking valve to piston damage.

Mind you STOCK PARTS as originally posted.

Aftermarket is a different story.

 

its not impossible, but I wouldn't do it!

 

That's some crazy **** man! Crazy