R33 Rb30 Conversion

[Bl4cK32]

Well done Dave

Hows traction?

[TTT]

nice work Dave.

quick run down on your engine please.

[fatz]

any suggestion on where the cheapest place to get the bearing and rings from

holden

nissan

stock bottom end just getting a freshen up

pete

[Fitzpatrick Speed Works]

pete cheapest is acl replacement bearings from your local repco etc.

Standar nissan bottom end bearings is $189+TAX, Holden I think was more again.

ACL standard replacement Ie. non race series. $96+TAX

Dave, Good work mate thats really nice for only 10psi, run her in quick so we can see what is really achievable!!!

[TTT]

I think sydney kid said he got it all from Holden.

"stock commondore parts" was his comment I believe.

[Skyrine-Dave]

GTST:

Wiseo forgies

eagle rods

2mm cometec (sp?) head gasket

stock rb25det head

greddy plenum

custom high mount with GT35r, .82 AR rear

I am told it has 9:1 compression

Notice on the graph how early it wants to shoot up in boost.. and in power!!

it is a world apart from the rb20, its just so nice to drive normally, Only booted it a few time but hell!!! its crazy

[TTT]

well it seems you built the bottom end for alot more than that..

hahaha

good work.

that turbo have internal gate?

[88silhouette]

when's it hittin boost dave?

[Skyrine-Dave]

she's got a non name 45mm external that really screams on boost

I havent wired my tacho in yet, but yeah it wouldnt be the most accurate figure cuz its is running pretty fat at the moment, seems to choke on itself a little, then all of a sudden it just screams onto boost

My speedo isnt working yet either, its cable driven and the drives in the box, but nothing on the dash ?? :S, going to jack it up and pull out the speedo sender, bet it's snapped the cog off the drive

[Spoolup]

Hi Dave,

I have RB25 HKS cams that will slot in that head :-)

So what was your final rwhp and at what boost ?

[StockyMcStock]

what happened to the R31 you had dave?

jeez seems like ages ago when we were talking about this stuff in the porto over a *number* of alcoholic beverages. good to see you got it going, only beat me by 6 months though

impressive power for that boost too, nice bolt-ons contribute i think

[OFENSV]

finaly have my rb30det together, put it in on monday when i get a new engine mount which is coming from melbourne. cant wait to drive it though

[OFENSV]

here are a couple of pics

[StockyMcStock]

is that gate going to clear everything? looks like it's a long way out!

mmm GTR head = fun

[OFENSV]

um i hope so, i had it there when it was on the rb25. will sit abit higher but should be ok

[Cubes]

I seriously don't think its going to fit.

If it does under hard acceleration its going to pop up the back end of your bonnet.

The RB30 sits 40mm higher than the rb25. 40mm is quite a bit.

[Sydneykid]

The RB20/25 cross over pipe is 82 mm OD, the RB30 block is 38 mm taller, so there should be 44 mm more clearance with a non cross over inlet system.

[Freebaggin]

Thread too long to check, but I understand RB30 stock rods are tougher than RB25 rods? By how much and why? I hear they can handle ~400rwkW with all tuning working well.

[Sydneykid]

Thread too long to check, but I understand RB30 stock rods are tougher than RB25 rods?  By how much and why?  I hear they can handle ~400rwkW with all tuning working well.

Ho, ho, ho, standard rods :looney: :looney: :looney: 400rwkw ho, ho, ho

RB30 rods are longer

RB30's have a better rod/stroke ratio than RB25/26

This means they are subject to lower side stresses

Being 3 litres, it doesn't have to rev as hard to make the same power

So the RB30 will generate the same power with less rod loadings

But the RB30 rods in themselves are not as strong as RB25 or RB26 rods

Because they don't have to be

[Freebaggin]

Ho, ho, ho, standard rods  :looney:  :looney:  :looney: 400rwkw ho, ho, ho

RB30 rods are longer

RB30's have a better rod/stroke ratio than RB25/26

This means they are subject to lower side stresses

Being 3 litres, it doesn't have to rev as hard to make the same power

So the RB30 will generate the same power with less rod loadings

But the RB30 rods in themselves are not as strong as RB25 or RB26 rods

Because they don't have to be

Yep, makes sense.