Aligning Timing Marks

[Logue]

Alright i'm putting on my timing belt on the 6 bolt engine on the stand right now.

I have put the belt on and taken it off about 10 times now trying to figure this out.

The dowel are are 12o'clock. The 2 inner cam marks are alined at 3&9o'clock. But what about the outer marks on the cams when i lay a ruler accross one is always about 1/2-1 tooth off.

Did i do something wrong?

Even did what vfaq said and turned the exhaust cam a little clockwise put the belt on tensioned it and the one outer mark still doesn't line up.

Like i said the inner marks at 3 and 9 o'clock do align perfectly though.

Should that one mark be off?

Thanks,

JJ

 

[andrewjscott]

I did end up getting it lined up. I had my experienced DSM friend give me a hand...hes done it a couple of times. we used boostedinaz method and got it on there first time. thanks for all the help.

 

[kikkinbac]

My Haynes manual calls the clips bulldog clips. I ended up using some strong clothespins to do it . They worked though.

 

[Grimis]

I just did mine last night, got the top half lined up, now the bottoms there pointing to the marks, not dead on, but are pointing there. like 1mm off, I'll take pictures, I dont know if that will hurt or not, just want to check before i start putting it back together.

 

[boostedinaz]

I just did mine last night, got the top half lined up, now the bottoms there pointing to the marks, not dead on, but are pointing there. like 1mm off, I'll take pictures, I dont know if that will hurt or not, just want to check before i start putting it back together.

It needs to line up perfectly to be correct.

 

[Grimis]

I just got back from taking pictures, Im stumped, last night, cam gears fine, bottom off just a hair, and now this,

sorry for the fuzzyness on the CG picture, but dam cam would't focus that close, but it did on the others.

 

[Sharkcus]

Just something to remember that I didn't see mentioned. When you align the cam gears, even if they look right, ALWAYS use a straight edge (ruler, anything straight) and put it across both cam gear bolts and make sure the timing marks are level.

 

[steve]

Just something to remember that I didn't see mentioned.

It hadn't been mentioned in this thread.


Grimis, Note that you have gone slightly past the marks on the bottom end. It's always hard to tell on the cams without any reference visable reference to the top of the head but nothing looks like it could be a tooth off so I suspect if you turn it over a few times more and slowly bring it to the timing marks watching everything as you ease up to the marks you'll find the point where the marks will all line up better.

Remember that because the belt and sprockets are toothed there is a limit to the smallest amount you can be off by.

Steve

 

[boostyGST]

hey grimis in the above pictures can you label what exactly each picture is, you have a 7 bolt right?

thks, I am going through the same BULL right now to, damn interference type engines.......!!!

 

[Grimis]

!

Balance Shaft
Cams Gears
Oil Pump
Crank

Its a 7bolt

Steve: the bottom end was off just a hair last night, and the cams where dead on when i went home. Now today is when i took the pictures, And with looking threw Vfaq, looks like my tensonor pully/tensonor needs redone... I think...