aq151 or 250a timing!

[markle]

after a long day and a dead battery trying to start my motor I have looked up some info on timing and have found two answers ... hopefully someone can tel me which is correct!

I am trying to set intermediate shaft timing and one book says to line up with the mark to fire no 1, the other says to run 60 degrees past timing mark for number one (on the distributor). Anyone know which of these is correct?

My gut feeling tells me 60 deg past as TDC is where the stroke has just finished and is about to start again - dont I want to get it to fire when piston has moved rather than the start of the stroke?

Any advice appreciated, next problem will no doubt be that I have also moved the distributor slightly but that can come later

Thank you for any help

Mark

 

[markle]

Re: aq151 or 250a timing!

Forgot to mention, the actual timing marks on the pulley have been lost in the sands of time

 

[Don S]

Re: aq151 or 250a timing!

Best go back and look at your manual, that 60? turning is for nothing more than installing the distributor into the block in the correct location. First of all, the belt has to be installed with all the marks in the right location, the the distributor is installed. Timing is set with a timing light after the dwell on the points has been set, and you must have a timing mark on the pulley to do that.
If the mark is gone, replace the pulley.

You are using the OEM manual for info aren't you? Seloc or Clymers are not what you want.
If you don't have the OEM manual, download it here. Manual Download

 

[markle]

Re: aq151 or 250a timing!

Yes it would seem that skim reading didn't do me any favors! Having reconsidered I think I set TDC off as I was thinking the pulley ran in the other direction! Spark is firing a moment too late.

Hindsight is a wonderful thing and my day off tomorrow is even better.

I have located the mark on the pulley but not on the block, but will probably go with my trusted screwdriver in spark hole method for now (remembering the pulley spins clockwise), next time I will not do my thinking whilst bent 90 degrees over the engine looking at it upside down

Thanks Don S

Mark

 

[Don S]

Re: aq151 or 250a timing!

Find the marks, the screwdriver method gets you close.
Take the belt off and the distributor out. Start at step one and but the belt back on with the proper lines and notches lined up on the belt. Then put the distributor in. Don't skip steps and do them right. Then it will run.

 

[markle]

Re: aq151 or 250a timing!

Will do! To make life easier I have pulled the head to re asses TDC.

I also have an issue with cam timing, is there anything other than timing marks I can line up with? I have heard rumors of taking a line straight from the crank thru cam bolt to replace a mark that has since gone (the cam pulley has a dot, but I painted the cam cover!).

I should really approach these things with a more considered approach!

 

[Don S]

Re: aq151 or 250a timing!

Will do! To make life easier I have pulled the head to re asses TDC.

I also have an issue with cam timing, is there anything other than timing marks I can line up with? I have heard rumors of taking a line straight from the crank thru cam bolt to replace a mark that has since gone (the cam pulley has a dot, but I painted the cam cover!).

I should really approach these things with a more considered approach!

You didn't make anything easier, you made it harder by pulling the head :facepalm:

Did you look at the OEM manual?? If you had, you didn't look long and hard enough.

Here is TDC of the crankshaft. It came from page 71 of the manual link I posted. Just line up the notches with the casting and you are at TDC.
Also notice the notch on the guide plate is directly above the keyway in the crankshaft?

 

[markle]

Re: aq151 or 250a timing!

Got the mark on the block but the mark on the guide plate is long gone! I will just have to find where the piston tops by taking a mark from when it has risen, and a mark from when it starts to drop and work out the mid distance May be a chore but it should get me close enough for now.

I looked at the manual and it affirmed that I probably wont be able to use the easy method to set it!

The cam cover markings are proving to be more of a pain as the valves start to move in smaller amounts than I can measure and I have lost the marks on that cover.

Worst case it will be new pulleys and guides for the crank but the cam cover is proving to be more elusive. I want to get her running for a bit before spending any more money on pulleys etc as I could just pull a 2.3 from a car and swap parts before long for the same cost.

Would have already done so had I not been stuck on the mooring and looking at the prospect of a crane on a lorry. Ive gotta get one sea run out of her before I lift her

 

[markle]

Re: aq151 or 250a timing!

Just noticed the keyway, problem solved just the cam now! Thanks Don S you are the man!

 

[Don S]

Re: aq151 or 250a timing!

Get a new guide plate with the notch, and get a belt pulley with a timing mark on it, and make sure the housing the raw water pump has the degree marks. You need them all to get the timing right with the timing light and for the basic setup before the timing light.
Those parts are a lot cheaper than a head gasket and all the seals you need to put it back together.

 

[Don S]

Re: aq151 or 250a timing!

Post some clear, big enough to see pictures of the front of your engine.

 

[markle]

Re: aq151 or 250a timing!

Volvo B230 Timing Belt Alignment Marks

This does the job for cam timing, it looks like it lines straight up! Working on boat tomorrow so will get some pics, as I am probably going to do something else quickly then wonder why it doesn't work again

 

[markle]

Re: aq151 or 250a timing!

She started you were right! Didnt last long but at least it ran and was able to rev. Next comes new points condenser and coil as that ignition isnt as strong as it could be. Got so excited I forgot to take a photo