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

Guilt-Toy

By Guilt-Toy,
in RB30 conversions

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Guilt-Toy Grand Master

Guilt-Toy

Posted
Posted

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

post-1240-1209960773_thumb.jpg

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 ?

post-1240-1209960959_thumb.jpg

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SirRacer Experienced

SirRacer

Posted
Posted

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

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fletch rb30 Enthusiast

fletch rb30

Posted
Posted

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

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