How To "Fitting Cams"

[AnGarrek]

Does anyone know the part number for the cam sprocket bolts ?

I have a VX TIS, but it won't work with Vista

 

[vocky]

90537451

http://www.speedsterclub.nl/bibliotheek ... index.html

 

[AnGarrek]

Thanks Vocky, you're a diamond

 

[richard]

vocky why were on the subject do you know the part number for the timing chain upper sliding rail retaing bolts please cheers..

 

[vocky]

11518828

 

[richard]

thanks vocky

 

[rik1083]

the timing tool... (the one that I have), It's possible to connect it the wrong way round. I s**t my pants at first when the holders wouldn't go into the holes when it was at tdc. I figured it out eventually, removed the holders, rotated the metal bit 180 deg and tried it again, and they went in. Don't know if other brands of the tool if this is possible, but it's something to watch out for (I have the franklin one).

Also, could someone confirm which coloured links are meant to be at either side, on the markings? I have a pink on the left side, but the link on the right hand side doesn't have any colour. Does this mean I have the old chain still?

Cheers, Richard.

 

[rik1083]

hmm....

Had my doubts before starting it up after fitting them both, as I've never been able to get the timing marks on the chain in the right place at the right time, the closest I had them was 1 link away.
Should I be able to align them? how many turns of the crank should it take to get them aligned?

anyway, had it running for 15 mins.. sounded fairly ok, but it stalled itself then wouldn't start again.
Removed the cam cover again, all seemed ok, but now I could only get them to within 2 links of the timing marks... really need to know how many turns of the crank it should take to get them aligned to look like this...

after I put it back together and started it again (it started once), sounded pretty rough (rougher than before), I turned it off, then it wouldn't start again.

Think I'm going to have to take the timing cover off and check all the timing marks everywhere, would just like to know if it's possible to get the marks aligned with the diamonds, aligned with the timing tool after it has been set up the first time..

Speedy replies appreciated

Thanks

 

[n17ves]

You should able to align the timing marks up excatly - I wouldn't start the engine until you can!!

Make sure the crank is turned to TDC and then is just a case of aligning the cam sprokects and crank sprocket with the relevant coloured links (from memory - pink link left cam sprocket, blue link right cam spocket and crank).

 

[vocky]

you need to reset the cam timing, simply align the coloured links and cable tie them to the sprocket marks, then align the crank link and finally install the tensioner.

then double check the marks, if all ok then remove the cable ties and reassamble.

 

[rik1083]

My timing chain was definately out.. I wonder if it had always been out?. Removed chain covers and realigned it all, much better now.
(that wasnt a pic of mine, it was from another thread).

Just a note though.. once it's all aligned and you turn the crank with your spanner, don't expect the coloured links to line up again (at least for a lot of rotations).. that's what fooled me at first.

Tomorrow I'm fitting the suspension :O

 

[rik1083]

it's up and running! went for a drive this evening and it's working very well, covered about 10-15 miles, certainly the cams are working... after about 4,500 rpm it's byebye, and the sound my car now makes is phenomenal (it was pretty good before). Idle as expected, and certainly doesn't put me off.
Only the rear end suspension fitted so far, the front gets it tomorrow

 

[vocky]

sounds good

 

[alanoo]

Sounds funny, reminded me of my last full weekend trying to get the cam timing right with the adjustable pulleys with no success

 

[Arnie]

Hi Just thought I would close my own contribution to this thread, the rattle i had after fitting the piper cams was entirely my fault. The chain tensioner hadnt engaged and so i had been driving around without proper tension!

I rectified it last night and the car has been a dream since with no abnormal noises . I have one quick question, I had the car dynoed at courtenays ( with the lose timing chain) and got 172.6@6457 BHP and 154.7@4923 lbft

This is with piper cams, 2.4 mani, modded airbox and miltek. Is it likely the loose chain would have had any effect on the figures ?

TIA

Clive

 

[vocky]

you would certainly have lost some power, I'm just glad it did no damage !

 

[Arnie]

Thanks Vocky - yeah i guess i got lucky, i will get it back on the rollers at some point

 

[AnGarrek]

Re:

it's quite easy, so no one has done a how 2

a quick how2...

remove coilpack
remove cam cover
fit a cam chain locking tool
remove cam pulley bolts
remove the bearing caps

refitting

use some sealant on the outer cam bearing on the inlet cam
do not overtighten the cam bearing caps, they are 10Nm only and will snap !

Vocky, in the Speedster video they remove the chain tensioner bolt from the rear of the block before fitting the timing tool to the cam sprockets,
but you haven't mentioned it in your "quick how to" is this a necessary step ?

 

[vocky]

I would have thought removing the tensioner would disturb the timing notsure.gif

personally I would simply bolt on the locking tool and leave the chain well alone dunno..

 

[AnGarrek]

To be completely honest, I thought releasing the chain tension was a bad idea too, timing wise,
but I was unsure how much tension the chain/sprockets are under and if there's scope for them move when you take the sprocket bolts out ?