Timing chain installation 1.9 SOHC (1995)

[horndog]

Which way are the camshaft and the crankshaft timing marks suppose to lined up? I have found nothing on this. All I know is the crankshaft pointed straight up and is the camshaft sprocket the same?

[bigc791]

camshaft has a dowel hole for alignment. i forget what size drill bit but u like the sprocket up with that hold on the head
Carmen

[Low Saturn]

Are you doing this without a manual? Because one would be handy. Even the crappy Haynes and/or Chiltons should give this information.

[horndog]

if the dowel goes into the camshaft where the key is, then I have no clue.

I had both crank and cam at TDC and fired it up and ran like crap, dunno what is wrong.

I did get a chilton's and will redo it by their instructions. I can do the timing chain in about 2 hours now..

[twosaturns]

on a DOHC, it's real easy- line up the dowel marks, and there are sliver links in the chain that line up at the bottom of the crank and top of each cam sprocket. of course, make sure you had real TDC, not 180 out.

[horndog]

well here is the scoop..

I bought this car from a customer for $50. Took the head off and had it sent in to be inspected. The machine shop said, "all the intake valves are bent." Ok, fix it. They fixed it. I put it all together and the timing chain, and fired it up. It ran for a minute then clunk, clunk, BAM! I said, ooh that doesn't sound good. took the valve cover off, and found the camshaft sprocket not on all the way(did I forget to tighten it?) and the timing was out 180 degrees.

Ok, fixed that..

got the timing right according to saturn and chilton's. fired it up and ran like crap again, but ok. check the compression, cyl1= 0 psi, cyl2= 190psi, cyl3=200psi, cyl4=0 psi...

hmm... could the bottom end took a digger? dunno. pistons bad? dunno

sprayed some oil in the 1 and 4 cylinders and rechecked the compression... hmm still 0. must be the valves. now I probably need to send the head in again to replace more valves. what do you all think?

becoming an expensive experiement, but I can do a timing chain in this car in less than 2 hours

[twosaturns]

Originally Posted by horndog

well here is the scoop..

It ran for a minute then clunk, clunk, BAM! I said, ooh that doesn't sound good.
check the compression, cyl1= 0 psi, cyl2= 190psi, cyl3=200psi, cyl4=0 psi...

now I probably need to send the head in again to replace more valves. what do you all think?

you bent the valves in 1 and 4 sounds like. at least you're getting fast...

[horndog]

i figured bent valves... there goes another $250

do you know if you can cut the valve seats more than once?

[bigc791]

Just get a used head. You will be better off in the end cleaning up a used head than dumping more valves into beat up guides. SOHC heads go for like $75 here you pick the car they pull it you take it home. i clean up the valves and put guides seals in them and never have any problems. Make sure when you pick the car you know why its there though. Look for something that is obviously there for reasons other than engine failure
Carmen

[justin_zink]

The engine that you are working on is an interference engine. this means there is no releifs cut into the pistons for the valves. When you had the timing off it caused the pistons to hit the valves. I would check the pistons for damage as well and always doublecheck the timing after you do it and try to get a friend to check it as well before you start it. Good luck

[bigc791]

what is there to check? either your colored links are where tehy are supposed to be or they arent.
Carmen

[horndog]

Originally Posted by bigc791

what is there to check? either your colored links are where tehy are supposed to be or they arent.
Carmen

i'm glad you are not doing my chain... you need to set the crank to TDC and the cam to TDC

[slaka8]

I will buy the car!
Shoot me a price

[horndog]

you going to pick it up in florida?