Grinding Crunching Noise Transfer Or Gearbox Please Help

[red_diesel]

Hi guys and gals, im a new member,

i bought a evo 4 last week with the bottom end knocking, i decided to buy and a fit a evo 6 engine, this was finished yesterday and she runs lovely im very happy. got 1 problem now and thats when i drive her if i come down the gear from say 4th to 3rd or 3rd to 2nd and i pull of the clutch real hard it sough of grinds like a cog is slipping, if i ease the clutch i get nothing and its perfect, there is no crunching from the gearbox it doesn't pop out of any gears or anything.

also i noticed today in reverse if i reverse fastish i hear a strange grinding noise of some kind, any help would be appreciated.

thanks everyone.

 

[rob@indigo-gt]

Hi m8, Had a similar problem on an evo 4 that was brought to us for a new gear box.

Turns out it was the half shaft that connects the driveshaft to the transfer box was incorrectly fitted and was pulling out when selecting gears.

Check the shafts for any play? Give them a pull and see if they pull out?
May just need a new circlip installed into the ends.

Hope this helps.

 

[red_diesel]

Hi m8, Had a similar problem on an evo 4 that was brought to us for a new gear box.

Turns out it was the half shaft that connects the driveshaft to the transfer box was incorrectly fitted and was pulling out when selecting gears.

Check the shafts for any play? Give them a pull and see if they pull out?
May just need a new circlip installed into the ends.

Hope this helps.

I will check this out when i get a dry day here, thanks for the info would be lovely if its something as simple, i will update with info.