Timing belt question

[Mick]

hey i have an r33 s2 gtst and i need a new timing belt on it, i was wondering if the gears have marks on them that you lime up with the belt so that it is installed perfect, i know it needs to be tuned and stuff after the belt is installed but if i can change the belt myself and be able to start and drive the car safely then i can just get the timing tuned. I was just worried that if it didnt have marks so i know the right alignment of the gears that i could damage the engine when i go to start it

[Trex]

yes the cam gears have indication dots. 

[KiwiRS4T]

There are several guides. Here's one:

 

[GeeDog]

10 hours ago, Mick said:

i was wondering if the gears have marks on them that you lime up with the belt

The gears do have marks on them, but you line them up with marks on the metal plate behind the gears, not with marks on the belt. Basically you line up each cam gear with it's mark, and set the crank to o degrees, then put the belt on without moving any of them. If you set the crank to 0 degrees on the timing marker before removing anything, the cams will be already lined up (assuming the cam timing is correct to start with).

I would also change the water pump, timing belt tensioner & idler, and the camshaft seals while it's apart.

[Hasitha]

If u have never done a timing belt change by ur self before I would sugest that u read up on it as there are many problems U might face while and after doing belt/water pump.

[tridentt150v]

Also....why would you need a tune after replacing it????  Hell No!!!!  You aren't replacing/renewing anything that affects or changes the tune.

Follow the guide and drive!!!

[Trex]

Also....why would you need a tune after replacing it????  Hell No!!!!  You aren't replacing/renewing anything that affects or changes the tune.
Follow the guide and drive!!!

He wants to adjust cam gear timing...
I honestly though most people didn't do this anymore because of the gains vs dyno cost.

[tridentt150v]

Maybe, I didn't read it like that...but even so limited gains - probably zero - on a Gtst, maybe ok on a GTR :).

[KiwiRS4T]

Don't think the OP is looking for a complete tune ...just needs the timing reset.

[Trex]

Easily done with some measurements and some pen marks. 

[Ben C34]

8 minutes ago, Trex said:

Easily done with some measurements and some pen marks. 

Not accurately enough. You need to use a timing gauge light to get it right.

[Trex]

8 minutes ago, Ben C34 said:

Not accurately enough. You need to use a timing gauge light to get it right.

I could never get my timing light to work correctly on an rb. Mine is the clamp over line type. Not a direct plug.
From memory it was showing off the scale, like 40+ deg

 

I honestly set and forget. I'll take it to my mates shop soon and see if we can get it spot on using measurements and pen marks.

[89CAL]

Its well documented that if it doesn't work with the timing loop wire, you use a spark plug lead between cyl 1 plug and coilpack and use the timing light off there

[Trex]

Its well documented that if it doesn't work with the timing loop wire, you use a spark plug lead between cyl 1 plug and coilpack and use the timing light off there

Interesting. Thanks for that! I'll give it a go