My old WRX used to make a WOOOOOOOOOOOOO sound from either the hood scoop or the mirrors way up in fourth. But topping out fifth, you guys are nuts. You have a lot more ***** than I do, closed racetrack or not.

Its a pretty good testament to how robust the 4G63 is to sustain high rpm and EGTs for as long as it would take in fifth.

I got old and quit that kind of stuff; I've never been anywhere near that fast.

 

street this evo, ill check that too. although regardless of whether its the mirror, or the windshield trim, or even the vent below my hood scoop (im missing two clips to hold it tight so that could be causing the sound as well) im confident that its nothing mechanical. i was leaning towards the windshield trim since it wasnt snapped down tight, but who knows until i do another test. thanks again guys.

 

The belt turning is related to engine speed, not vehicle speed.....so if it slips at say.....6800 rpm's, wouldnt you think it would do it at 6800 rpm's in any gear??

 

For my record... 170 mph @ 7800 rpm tonight That's all she had...bounced off the limiter. We'll leave it at that ha.

 

Well by gearing... the stock 5 speed gearing should only go up to 174mph at 7500rpm. if i remember correctly

that's assuming your on the stock tires etc

 

there is more load on the engine at that high of a speed so that would play a factor in belt slip at high speeds.

 

its not the belt slipping..it is the rubber around the window....at high speeds it tends to trap the air and create this sound...i hear it alllllllllll the time when i go beyond 220km/h

good luck

 

I've gone so fast my driver side mirror went in.. and it was wooooing like crazy.. did this on some common road out here in Germany on the country side.. called auto.. van something.. hahaha.. one day i'll get it on tape for ya guys.. more than 170mph thats for sure.. needle was buried and she still kept going.. wonder what speed would the high HP evos.. would do.. as for my evo.. is a bit mild.. not too extreme.. still on stock turbo, pushing around 390ish on pump.. and its an MR.. that 6spd does come in handy here..!! Am not BSing you guys.. wish all you guys were here.. so we can fly by porches and lambos on those corners.. hehehe

 

Yes, more load on the ENGINE.....crankshaft.....not the accessories, which would have NO effect on the belt!

 

UMMMM.....im pretty sure thats the Evo is governed at 155

 

This question might be insane but I have a curious mind.....I have an Evo and I had it to 153-155 turning about 7000-7100 rpms. Then it kept on pulling even while I was inside the redline so it got to about 7300 rpms and I backed off. StreetThisEvo you had a personal record of 170 turning 7800 rpms do you have any valve work done like springs, retainers, or anything like that. I know you can turn that rpm in a lower gear because its quicker but 5th gear WOT takes longer. So can the engine substain that rpms and still be ok?

 

got your sig

 

i went 165 on my 05 8...no problems...very stable too..us hwy 50 in nv.,( Dynoflashed )

 

well I found out that it was in fact the wind making all that noise.

 

Haha that's the funniest thing I've ever heard the mirror went in!