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RB26 engine rebuild

adelzx9r

By adelzx9r,
in Engines & Forced Induction

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adelzx9r Apprentice

adelzx9r

Posted
Posted

Hello everbody my name is Adel I am rebuilding my RB26 engine on my GTR R34 and I am looking for the engine tightening torque, can anybody please give the right torque tightening starting from the head studs to the bearings, am going to use 88mm pistons and the rest.

Awaiting for an answer as soon as possible please.

:bs!: :bs!:

Best Regards to all

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SootyR32 Enthusiast

SootyR32

Posted
Posted

I assume they are the same for any RB26? I've just rebuilt mine using 88mm pistons as well and can give you the torque settings we used, though mine's an R32.

Tighten to 29 Nm

Tighten to 108 Nm

Then loosen all bolts completely

Tighten all to 29 Nm again

Finally tigten all to somewhere between 103 to 113

adelzx9r Apprentice

adelzx9r

Posted
  • Author
Posted

Thank you man,,

Am using single turbo HKS T51R-SPL and HKS Cams 272 deg in/out do you have any special tricks or setings to gain mor power? or what will be the best timing set up,

Adel

I assume they are the same for any RB26? I've just rebuilt mine using 88mm pistons as well and can give you the torque settings we used, though mine's an R32.  

Tighten to 29 Nm

Tighten to 108 Nm

Then loosen all bolts completely

Tighten all to 29 Nm again

Finally tigten all to somewhere between 103 to 113

SootyR32 Enthusiast

SootyR32

Posted
Posted

Not at the moment. It's still sitting on the engine stand. Hopefully drop it in this weekend and tune it during next week. As for now my turbos and cams are still stock. I've done the rebuild first (was sort of forced to, stuffed the last block) and will then add some meaty cams and bigger turbos.

One thing for sure, it will be tuned very much on the safe side at first and then I'll try and clock up some quick kays at low boost to run it in. Will get back to you once I start trying to milk some power. I was running 320rwkw but that was on very high boost. How the standard turbos didn't shit themselves I'll never know.

adelzx9r Apprentice

adelzx9r

Posted
  • Author
Posted

Hey Matt,,

My mechanic is asking few questions like

1. Can the head Bolts be reused ?

2. Can the Con Rod bolts be reused ? both are in good condition though.

3. How do you start tightening the head bolts? he means do you start from the center bolts then back to fwd or what is the best way, coz again he works with ferraries and its his first time to work with the RB26 enigine.

4. Head bolts torque

5. Main bearings torque

6. Con Rod bearings

7. Cam shaft caps

8. Flywheel torque

Sorry Matt for being a Pain but its imprtant to me.

Thank you

Adel

Not at the moment. It's still sitting on the engine stand. Hopefully drop it in this weekend and tune it during next week. As for now my turbos and cams are still stock. I've done the rebuild first (was sort of forced to, stuffed the last block) and will then add some meaty cams and bigger turbos.  

One thing for sure, it will be tuned very much on the safe side at first and then I'll try and clock up some quick kays at low boost to run it in. Will get back to you once I start trying to milk some power. I was running 320rwkw but that was on very high boost. How the standard turbos didn't shit themselves I'll never know.

SootyR32 Enthusiast

SootyR32

Posted
Posted

1. Can the head Bolts be reused ?

Yes

2. Can the Con Rod bolts be reused ? both are in good condition though.

Yes

3. How do you start tightening the head bolts? he means do you start from the center bolts then back to fwd or what is the best way, coz again he works with ferraries and its his first time to work with the RB26 enigine.

Middle, then fwd, back, fwd, etc till you reach the outer bolts

4. Head bolts torque

Sorry, just reread your first question in this thread. Those settings I gave you are for the head bolts.

5. Main bearings torque

6. Con Rod bearings

7. Cam shaft caps

8. Flywheel torque

I will post these later today, I don't have them at hand.

Duncan Grand Master

Duncan

Posted
Posted

mate, do a search on here for "R32 Workshop Manual", there is a full copy posted in english with all torques and tightening orders, everything you need :)

I reused the head bolts but replaced the rod bolts. But unless you are a real tightarse just replace both, better than pulling it all apart again later

SootyR32 Enthusiast

SootyR32

Posted
Posted

That's where I'm getting the settings from, the r32 workshop manual.

I suppose I should have replaced the rod bolts but 'meh', they'll do. It's nothing to do with being a tight arse (hell, I've spent 12 grand on just engine parts not including turbos), it was more to do with couldn't be arsed.

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