jr758774c

iTrader: (21)

Guys, I've got a strange one here - My friend has recently had his Ver3 engine removed due to a knocking bottom end, and he has replaced it with a CDB from a 94 WRX. He's kept the same heads and inlet etc... from his Ver3, but rebuilt it using new gaskets and stretch bolts etc...
Now after it was all put back in, there is no compression in any of the cylinders. I know the heads were torqued the the right settings, and I've checked the timing for him and re done it just in case, but still nothing.
The heads looked fine and were from a running engine that apart from having a blown bottom end, ran very well.
So my question is - What the hell could be causing a lack of compression in all cylinders, if I know the Heads are OK, the timing is OK and the pistons on the replacment smallblock all looked OK, but I must admit I never heard it running.

Any help or assistance would be appreciated as my mate is going crazy and I cant figure out what the hell is going on with it!

Mark

coll_52

iTrader: (1)

is the cams turning find it strange there is no compresion in all the piston bores even of theres wear on the bores you should get some compresion dont know enough about the boxer engine am afraid is there hydralic lifters on these engines ?

hopefuly someone else will be along with a bit more info think its something silly if yer getting no compresion on all four bores

alcazar

iTrader: (2)

You sure the replacement short motor has rings on the pistons?

dunx

iTrader: (3)

LH and RH cam pulleys on the correct "side" ?

dunx

jr758774c

iTrader: (21)

all cams had the correct pulleys and sensor pickups on them. My only thought is when he took the heads off he took the buckets out too, and some of the shims got mixed up (Under bucket shims) would it really make THAT much of a difference if the shims were in the wrong buckets?

Turbotits

iTrader: (2)

Yes if the valves wernt able to close. Id go with a timing issue though

merlin24

iTrader: (1)

You obviously didnt check the valve clearances before you put the cam covers on

Mick

jr758774c

iTrader: (21)

I didn't build the engine, but obviously that is the case - I'm going to strip the engine out of the car with him and check it all from scratch and check all the clearances to make sure

yanspeed

check timings not 180 out on bottom end

Arch

iTrader: (59)

Not trying to be smart but you did have the throttle wide open when checking the compression?

tattooRick

jr758774c.......... ive sent you a pm regards the turbo i purchased off you in march. can you give me a reply, when you next come online. thanks.