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Cam position @ TDC 16v

MadDog_945

MadDog_945

Våga Vägra 8V
Joined
Apr 25, 2006
Location
Lower Saxony
Hi,

Are there some people out who could post some pics from their cams on TDC without a cover?

I don't have a Cover so i cant check if the timing is right and the method i used to align them seems quite wrong..

I used the embedded pin on the valvecover and looked down from above.. but the mark in the cam should point on 12oclock to the sealingsurface.. if you do so the pin on the cover becomes so much useless...

Im confused... btw.. due to this i was 1,5 teeth off timing.. argh -.-
 
on mine the marks on the valve cover are not exactly straight up i think the intake is of slightly.
 
940guy said:
on mine the marks on the valve cover are not exactly straight up i think the intake is of slightly.
Click to expand...

Yeah.. ah buddy who works for a volvo garage and the greenbooks(picture) say..

The cams have to stand exactly in a 90? angle with the marks to the deck... but this makes the marks on the cover completely useless/dangerous to use like it happened to me..

I just want to make sure how others are doing this without a cover...
 
This is what the greenbooks say.. but i think to understand this you'll need the plastik camcovwer and its grooves...

IMG_5415.JPG


IMG_5416.JPG
 
I just went and looked at my B234f and there are timing marks on the valve cover as well as the rear section of the plastic timing cover. It looks like both cams are at 12:00 relative to the deck of the head. You should be able to time it up the same way as a B230 missing the timing cover, just lean over and eyeball it.

Most timing belts have timing marks on them too, so you can take the belt off and put it back on with the marks on the belt and pulleys lined up and know you're in time.

But the raised bumps on the valve cover should be all you need, you can see which groove on the pulley is marked, then look straight down and line that groove up with the bump on the cam cover.

With mine at TDC the marks on the pulleys, timing cover, and valve cover are all lined up.
 
There are marks on the valve cover, and marks on the stock cam gears for you to line them up. One of the cam gears does not line up with the marks on the valve cover without having to turn it a little bit. I believe that cam that doesn't line up is the exhaust side.

I just set the intake side camshaft and then proceeded to put the belt on the gears and had a 14mm wrench on the exhaust side gear. I then roated the exhaust side camshaft till the marks lined up with the mark on the valve cover. once belt is on it will hold cam gear marks with corresponding marks on the valve cover
 
Thx for your posts, but im still unconvinced about this..


Could anyone make some pics in different angles from the Gears on TDC ?
 
I cut my stock b230 timing cover in half, and installed it with just two bolts so that I had the timing mark tab... this is what it looks like. I even cut the bottom of the timing cover off so that I could install it without pulling the crank pulley. for my crank and cams to be timed correctly, my timing marks on the cam makes the cams look retarded a bit.... looks like it would take adjustable timing gears to get it perfect, but runs great.<a href="http://www.flickr.com/photos/20054749@N07/8180674069/" title="crank timing mark by turbojose, on Flickr"><img src="http://l7.yimg.com/te/8069/8180674069_4e63c60daf_z.jpg" width="478" height="640" alt="crank timing mark"></a>
<a href="http://www.flickr.com/photos/20054749@N07/8180709516/" title="cam timing marks by turbojose, on Flickr"><img src="http://farm9.staticflickr.com/8202/8180709516_f9d5dba0fb_z.jpg" width="478" height="640" alt="cam timing marks"></a>
 
Has a lot of material been removed from the surface of the head? If you lower the installed head height, then the cams will change position when the belt is tight.
 
On mine, I had a head that was rebuilt at least once when I got it... and I had it cleaned up when I pulled it off once... so there is a little material removed for sure.... I guess that is why my cam timing looks a little retarded in the pic.
 
16vcambeltalignment.jpg



A new pic to enlight us all.. this should be the Masterplan.. 12o'clock to the decksurface.. which means my timing was off 1,5 teeth, which also means.. thats the reason for my pile of scrap what means..


Don't ****ing ever use the embedded pins for belt alignment when not having a plasticcover around !!!
 
The picture above is not showing the proper position of the belt against the main pulley...that "zoomed" area #6 is just below the cut.
Could someone confirm this is the correct way?

<a href="https://imgur.com/YNaLTBp"><img src="https://i.imgur.com/YNaLTBpl.jpg" title="source: imgur.com" /></a>

<a href="https://imgur.com/jJM2Va2"><img src="https://i.imgur.com/jJM2Va2l.jpg" title="source: imgur.com" /></a>
 
So...I checked the timing belt cover. I haven't found any mark that could indicate the correct position of the main pulley. The only thing I've found is a little notch on the pulley lined up with a protrusion on the aluminium lining...is that it?

<a href="https://imgur.com/e8yR8Ia"><img src="https://i.imgur.com/e8yR8Ial.jpg" title="source: imgur.com" /></a>
 
There should definitely be a sticky about this. I see the question come up often and usually without much answer or multiple people looking for the same info.
 
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