westy94wrx

My engine started knocking ever so slightly and ive noticed the crank pulley is wobbling madly could this be causing the slight knocking and would i need a new engine. Also there seems to be a ticking as soon as you rev and a squeal when it idles and then it disappears when you rev it. Is this a major problem and could my engine be damaged?

musso2010

Tighten the bolt before its too late!

bugeyejohn

iTrader: (11)

Do a search on it theres some interesting reading there

CDF Racing

iTrader: (49)

I would advice you not to drive the car anymore , take the pulley off and look at it .... I would bet that rubber damper has split as that pulley is made from two pieces

cheers chris

westy94wrx

well i cant not drive it as it is my only car so the pulley could be causing my problems????

andy-m

iTrader: (1)

i was in the same situaion as i needed my car for work. I ended up continuing to drive it, then spent 4 months having to get 1 bus and 3 trains to work cuz i killed the engine.

westy94wrx

bet it was cheaper than running the scoob though there seems to be some wear on the a/c belt?

Eternal Rage

iTrader: (7)

With the crank wobbling it has probably burred the edge of the pulley as it wont be allowing the belt to run straight and true.

I have a Crank Pulley off a 98 car in my Random Parts For Sale Thread.

https://www.scoobynet.com/private-fo...c-impreza.html

Let me know if you are interested

westy94wrx

ok well will my engine be damaged if the crank pulley is wobbling?? as i dont want to waste money

Eternal Rage

iTrader: (7)

No. It will be fine as it is, but if the crank pulley fails its the equivalent of the timing belt snapping, bent values etc...

alcazar

iTrader: (2)

Here is your answer. Mine did excatly the same and started knocking just after it had been rebuilt

Turned out to be the pulley, the rubber bit had perished as above.

Darren at DML cured it with a spare pulley, now replaced with one of CDF's alloy ones.

tjmatt

iTrader: (1)

If its the bolt that comes loose its worse than the pulley outer separating. The pulley then eats the woodruff key on the crank, and damages the timing belt pulley. I pulled over immediately when mine started knocking, found that the main pulley bolt was loose and just about saved it with a broken woodruff key, minor damage to the slot and timing belt pulley. If it wasn't for the timing belt pulley rusting onto the crank the broken woodruff key would have bent every valve and been a very costly repair. Utter madness driving it until you've found out which it is.

nickscooby

iTrader: (1)

sorry, highjacking a little bit. i have a small amount of wobble on mine so before i but new pulleys:

does the light weight pulley make a noticable difference, i know it should in theory but what about in real ilfe?

does it make a difference changing all the pulleys for light weight ones or save money and just change the crank?

cheers

bugeyejohn

iTrader: (11)

Ive read up to 8bhp gains but im not so sure,im thinking of buying a cdf one just because there better