Just had new ported headers fitted on my 04 Sti Uk and when driving home after nicely warmed up I pushed in 4th and had problem when engaging 5th, very noisy and grating on the gear stick. I thought I had not fully used clutch so tried again and same result. All the other selections fine and 5th also OK if not pushing it, ie. driving normally. Is it likely just to happen like this when perfectly ok before headers changed? Is it a synchromesh problem? Is it fixable or what?
Any help/advise greatly appreciated.

 

Bttt

 

What power are you running with the simtek..are you still on original clutch!

 

Just had an Excedy fitted very recently, I'm running 320 at the wheels.

Why would only 5th be affected too?

 

common probs mate had mine fixed earlier this year,syncro on 5th

 

Big thanks to Maydew on the info passed on, what Snets all about

 

got the same prob with mine mate,its ok on normal driving but when your giving it some through the gears 5th always gives a little crunch.its been the same for over 2 years now so i shouldnt worry too much. arf.

 

Ok mate thanks for letting me know

 

i have this problem aswell, whats the best way to sort it ? its that bad sometimes it feels as though somethings going to fly apart !! 2004 04 wrx ?

 

ive heard 5 gear comes loose may be that the problem ?

 

Same mate nothing to worry about

 

i heard this aswell?? how do you fix it??

mine is doin this in 4th and 5th but only when the car is high revving!!
i heard you have to tighting a bolt?? which one is it??

 

Try using castrol syntrax instead of fully synth oil, helped on mine as used to crunch in 3rd and 5th, now just 5th on full chat - means my box needs some TLC