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  • 1 month later...

Looks like I will be fitting the manifold and turbo to the 25 first. Engine is a long way a way with cost wise. Will be fitting over the next few weeks. Then getting it tuned. Want it done by the 24th of this month. Have a track day on the 26th.

  • 2 weeks later...
  • 2 months later...
  • 6 months later...

Ok. So I have the bottom end back and about to bolt it together.

Just wanted to know what head gasket everyone uses in the rb30 25 neo builds. I know what thickness I need just not aure on witch one to use.

25 26 or 30.

Whats the best one?

  • 2 weeks later...

Ok so have picked up the 30 head gasket and now trying to sort out the timing belt. Do you use the 25 tencher and idler or do you use the 30 ones. Also what brand belts is everyone using. Tried to find a t291 gates belt in racing series and gates Australia don't have them. I know people use the dayco std one but wanted to have something with better quality thats all.

You didn't read my answer.

Use any brand belt you want, it doesn't matter unless making huge power. I used a standard run of the mill Dayco belt.

Seeing as RB30 doesn't use an idler you may find it hard to use that. Like I said RB25/RB30 use the same tensioner bearing so it doesn't matter.

  • Like 1

Okay then I would buy the most expensive belt you can get, maybe get in contact with OS Giken and see what belt they used on their 26 strokers. Meanwhile everyone else will be over here using the inferior Dayco belt just fine.

  • 2 weeks later...

Was speaking with a bloke the other day and he said that the top deck of the block needs a different finish for the cometic head gasket. Never used them before so don't know if this bloke was telling the truth or Tring to blow smoke up my arse.

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