Rb30 Twin Cam

[mr_rbman]

I’m in the process of building up an rb30 twin cam turbo engine using all the na rb30 gear and the na non vvt rb25 head! I have had the bottom end already fully rebuilt and have just purchased the head! What i basically need doing is:

1) Pulley’s relocated, drilled and tapped

2) Check the cylinder head itself and reseat the valves and machine the head if necessary

3) Bolt head to bottom end with head gasket

4) Put timing belt on and torque to around 20kg’s

5) I’m hoping for a compression ratio of around 8.2:1, was hoping you could check if possible

6) I’m also hoping for a squish (quench) Deck height + head gasket thickness of 1mm to 1.37mm.

What i'm basically after is a workshop/engine builder you guys would recommend i take this to get done?

Edited September 5, 2005 by mr_rbman

[TIMMMAYYY]

Cubes would probably do it for a few $

[mr_rbman]

hehe, i'm hoping he'll give me the guy's number who did his and Darren's

[mr_rbman]

so far i've got one rough price from chris milton engines of $700 and i thought that was a bit steep for what i want doing, any thoughts?

[Maxx]

2) Check the cylinder head itself and reseat the valves and machine the head if necessary

i remeber joel's head job cost him $1000, which is recondition his head plus some port job

Edited September 5, 2005 by Maxx

[mr_rbman]

  Maxx said:

2) Check the cylinder head itself and reseat the valves and machine the head if necessary

i remeber joel's head job cost him $1000, which is recondition his head plus some port job

<{POST_SNAPBACK}>

ye i know, not lookin for any porting as i know thats where most of the money goes!

[Cubes]

  Maxx said:

i remeber joel's head job cost him $1000, which is recondition his head plus some port job

<{POST_SNAPBACK}>

That was an expensive head job, and didn't even come with a full service.

Still... the recondition was worth every penny.

Edited September 6, 2005 by Cubes

[Cubes]

To reseat the valves they have to pull the head apart and reassemble. This is what costs the $$.

I could have a quick look at the head and suggest if it needs shimming due to lack of seat tension.

Hopefully it doesn't.

Drilling the tensioner locater is easy, don't worry if it goes in to the water galley behind, throw some plumbers tape on the thread when you screw it in.

The bloke that did my motor doesn't work at City Dismantlers any more, he went and bought him self some earth moving equipment.

He does however build motors from home, I have his number, They arn't half arsed jobs, he knows his theory and has been in the game since a young kid. BUT.. he builds motors, not bolt heads on to motors.

To simply bolt the head on, drill tap tensioner, fit cam belt, check valve/piston clearances he charged $200.

Obviously to rip a head apart and assemble you are looking at $300-$400 even before you touch it. Almost makes it worth while to smooth out the lumps in the exhaust ports and clean everything up. But where does it end.

[Bl4cK32]

From memory the head porting was around the $200 mark, the rest of the $750 went on dissassembly, and reconditioning...

Miltons do know what they are doing though...

[mr_rbman]

thanks for the help guys, is it best to get the vrs gasket kit from a nissan dealer or is there somewhere that sells them a little cheaper? Also should i just use gasket glue for putting the sump back on?

[Bl4cK32]

nissan is good for the vrs kit....cant remember how much i paid though ^_^

[Sambo33]

i paid $260 for the full VRS gasket kit from nissan

[mr_rbman]

  Sambo33 said:

i paid $260 for the full VRS gasket kit from nissan

<{POST_SNAPBACK}>

will be going there friday then!