removing crank timing belt sprocket

[stuartgze]

I have played this game before with a gze crank pulley. there should be 2 threads tapped into the pulley either side on the main nut. I use a puller like this one.


But mine was for a mini flywheel that i modded a little. Buy a tool similar to this it makes the world of difference.

[Gunner]

Sorry got confused with the suby ones

[s14seriesII]

there are holes in the crank pulley not the timing gear

drill 2*5mm holes and tap to m6 find 2 bolts and a harmonic balancer puller or similar

i do this almost weekly doing oil seals on 4a/7a's

[Jonny Rochester]

Someone else did this once, but failed. They snapped the tap off inside the sprocket, and munted everything else around it. They effectively ruined a 7A motor, which they then gave to me. 7A-FE bits for sale.

[s14seriesII]

lol in that case cut and split the timing pulley to remove and buy a new gear then refit.. or not be useless with a thread tap lol

[Nikkojoe]

It's funny though, ive had a good run with 20+ 4a's removing this gear, however I have only encounted this problem when I got my 4agze this year. I think ill chuck up a pic of what it looked like after I was finished with it

[Oly AE86]

I have done the drill and tap method with success, makes the pulley off-balance but I don't think it would be anything to worry about.

Have also used the hot/cold method, heat the sprocket with gas torch (Map 1ltr Gas etc) and then cool the crank with can of CO2, worked a treat. Just need to be careful of fire ( if you spray first then heat second) , and overheating the main seal, but its something that you would replace anyway.

[Javal]

I can see this working really well actually. Must try next time.

[Tim.duncan]

cheers for the replys guys

yeah i have tried a few of those methods already and also have killed the pully! i just want the stupid thing off. ill igve the drill and tap a go first, its already dead so i might just cut it off as nikko joe sugested. its good to hear im not the only one having problems with this

any one got a spare pully they dont need?

[biggo]

I did this the other day, had a pretty stuborn pulley that wouldnt come off.

Drilled and tapped 2 holes failed so i just drilled the hole out bigger and cold chisel it till it splits.

was on a 3sfe tho, same shit different story.