Timing Belt For Rb30det (which One Is Correct For My Engine)

[Guilt-Toy]

Hey people

My timing belt got wet again (oil) and i need to replace it, last one cost me $92 and it is only 2000kms old

anyways i was looking at the rb30 guide and it seems that i have been using the wrong belt ? Anyway my engine is using this configuration...

My config.

Info for this config says...

Required a belt thats 11 teeth longer with a total of 152 Teeth, the dayco part number is 94407

NOT MY CONFIG (but i have been using this belt

Not reccomended cos the belt comes to close together, and the belt is thinner 25mm vs 30mm

It uses a Gates Powergrip GT2 p/n 1200 8MGT 30 1200mm long 8mm pitch on teeth 150 teeth 25mm wide (cut down from 30 at factory)

Also uses the bosh VB-T866. Which cross references to T291 (so they tell me and its exactly the same and its only $47 25mm wide 152 teeth they tell me so it does have 152 teeth its just smaller)

I have been using the T866 belt on my engine, but the configuration says to use the dayco 94407 which has 2 more teeth then the gates powergrip your supposed to use on this one. I am confused on which one I am to get.

Where do you get the Dayco 94407 ? i think thats the belt i want this time, or does it not matter which one you use ? i would think the thicker one with 152 teeth would be better.

anyway what does everyone here use ?

[SirRacer]

the gates and bosch belts are absolutely identical.

i brought the gates one first for my conversion, then forgot i had it and brought the bosch one. lined them up next to one another and they are the same

[Guilt-Toy]

then whats different between the dayco and the gates one then ?

where do you get the dayco from? thats the one im supposed to be using ?

[SirRacer]

you have cam gears anyway so i couldnt worry. i think the idea was the timing was slightly out due to the belt(not sure however)

[fletch rb30]

You can use a mazda familia diesel 1.7 litre timing belt, they are $17 bucks in NZ. Or you run one off a VW something, its 151 teeth, so you need the belt before you drill the hole for the top tensioner. its a better tooth profile and fits the pulleys better.

Myself and a few mates are all running the mazda diesel belt on our rb30's probably at least 8 engines, and no failures

[Guilt-Toy]

got the bosch replacement t291 or whatever it is and it is actually the dayco 9447 belt!

lol all worked out in the end !

[Guilt-Toy]

Hahahaha..  this is gold...  

 

Building my third RB30DET and had some confusion with the timing belt,  google the question and there we go,  I answered my own question 10 years ago =)

[Griffin]

I used the 152 tooth belt, it was very tight so I'd drill the tensioner hole a few mm south  west next time.

Edited February 19, 2018 by Griffin