Engine and cam timing

[Ben carne]

G'day all I wondering if any one has info on timing the crank to the cam shaft on my KE30 corolla with a std 3K engine also has any bought after market intakes for them or modified them to fit better with headers 

thanks 

[ke70dave]

Quick buy this!

http://www.ebay.com.au/itm/GENUINE-TOYOTA-2K-3K-4K-COROLLA-FACTORY-ENGINE-SERVICE-WORKSHOP-MANUAL-/391791791290?hash=item5b389c4cba:g:SYoAAOSw7GRZIt6K

$35 will save you alot of pain. 

 

 

 

[Banjo]

Hi Ben,

           Dave's suggestion is excellent, as having the genuine Toyota "Yellow Bible" on the K Series, is probably one of the best investments you'll ever make, if you are going to play with a K series engine.  I got one early in my journey, which covers 2K to 5K-C, and it has been invaluable.

Most functions of reassembling a K Series engine are straight forward, simple, & logical, but fitting the timing chain, & aligning the crankshaft & camshaft sprockets, is one area, where if you get it wrong, it can prove dissasterous, & cause a lot of frustration, after the engine is assembled & ready to test for the first time.  By that time the engine is probably already back in the engine bay, & all hooked up.

The alignment is critical, & is covered in the "Yellow Bible" & the Haynes/Gregorys manuals.

Essentially the timing is carried out with the engine at TDC on no: 1 & 4 cylinder.

The crankshaft sprocket should be fitted first to the crankshaft, with its key fitted.

The crankshaft should then be turned slightly, if required, until the "dot" marking on the outer of the crankshaft sprocket is on the lower side of the engine, and is in line with an imaginary line passing through the centre point of both crankshaft & camshaft.  (see diagram in pictures below)

The camshaft is then rotated, without its sprocket until the locating pin for the sprocket, lines up with inner mark on camshaft retaining plate, which again, are all in line with the imaginary line, passing through the centre points of both camshaft & crankshaft.

This is now the critical point.  The camshaft & crankshaft cannot be allowed to move, whilst fitting the chain.

With both sprockets on a flat surface, off the engine, fit the chain to both sprockets, such that when you pick up both sprockets & chain, that they slide onto the keyway (crankshaft) & locating pin (camshaft) without rotationally moving either sprocket.  When fitted, a straight edge, (like a steel ruler) should line up with both outer sprocket marks & the centre points of both crankshaft & camshaft.  Actually much simpler than it sounds, when you describe it, but it is important, because if the chain is out one or two links, then the engines valve & distributor timing will be out dramatically.

Have a look at the relevant scans from the manuals below, & it should all gell, as "a picture paints a thousand words". 

P.S. The manuals refer to markings on the chain, which I've never been able to find, because the chains are old & discoloured. Whilst laying the sprockets on a flat surface, with a straight though the centre point of both sprockets, & sprocket markings, I've just put a dab on "white Out" on the relevant link at each end to assist. 

Good luck, & let us know how you go.

Cheers Banjo

Edited May 24, 2017 by Banjo