2001 wrx low vacum

[raymong]

gutted!!!i was looking into that and was trying to figure out where the ignitor was and didnt come across an ignitor..

:-\

[raymong]

has to be something in the wiring..went to test with miltimeter but it seems to be bung!!god dang!!

[raymong]

replaced fuel filter the car seems to rev alot easier..

i mite try some platnums ..

[raymong]

just done valve clarances

cyc 1 inlet cam one had next to no clearance?this would mean one of the valves is not fully closing??

explains 150psi compression?

explains the lumpy running?

buckers must have fell out when reassembling and got mixed around.

how much is too much clearance and too little?

[Guest]

 raymong said:

just done valve clarances

cyc 1 inlet cam one had next to no clearance?this would mean one of the valves is not fully closing??

explains 150psi compression?

explains the lumpy running?

buckers must have fell out when reassembling and got mixed around.

how much is too much clearance and too little?

You mean to say you didnt check this when ya reassembled the engine ?

150 comps are fine, but lack of valve clearance will wreak havoc to idle

Most common valve clearances are 0.20mm inlet and 0.25mm Exhaust - old school 8 and 10 thou

[raymong]

must have been abit rushed...

defitnately been causing me massive headaches!

if i was 2 have bent valves..would it still comp test ?

[Guest]

depending on how bent, a minor bend will still run

WHY ???????

[Guest]

do a leak down test , before you refit the engine !!

[raymong]

because the heads were off the old v7 motor which im pretty sure it had a different block dummy in there to get running...had 3 flat top pistons and 1 dished top(v7) piston. the issue in the 1st place was that the v7 piston was sticking out 1mm out of the block..thus the top and bottom of the dish of the piston was hittting...i had a look at the piston there wasnt any valve marks/dents so i assumed the valves were fine..

when engine was put back together and running there was tapping noise coming from that side of engine.only occasionally ..thought this could be a bent valve hitting piston..but on the valve clearance check that cyc(3) had too much clearance so it could be the noise...

any way of changing the shims without taking cams out??im not too keen on buying a shim changing tool ...

[Guest]

V5 and later will have under bucket shims - so buckets need to come out to get to shims - Which means cams out

V4 and earlier have shimon top of bucket , which can be done in place

For all your time leaning over the guards unside down - it IS faster to pull the engine to sort this out with ANY type of head when doing more than 3 shims/ lifters

[raymong]

mine is wrx v7 shim over buckets...

was thinking undo engine mounts and then jack up..

undo timing belt and cams and do it that way..

[raymong]

i just swapped over the inlet cam shims...

its now 6 thou 6 thou for cyc 3 and 8 thou 7 thou on cyc 1

it was 6 thou 10 thou cyc 3 and 8 thou and 4 thou b4

is that gonna be better than b4 or do i need to get new shims to suit

[Guest]

just swapping shims wont do much, uless you mease first, measure the thickness of the shim and work out what you need to change-- I wouldnt go more than 0.002 more clearance or 0.001" tighter

[raymong]

i hear lug lug lug :'(

i done the clearances...and yes shes idling properly!!!!

but...lug lug lug...

start again...