RB30 Which block? - GT-R Register - Official Nissan Skyline and GTR Owners Club forum

leeroy_25 · 15th July 2008, 08:10 PM

I gather there is more than one RB30 block. When doing a RB30 conversion with and RB26 head for an R33 GTR how can I be sure I get the correct block? I gather you need certain oil feeds and returns and water feeds present and also positions for tensioner mountings.. Which of the blocks have all these facilities from factory or will it be most likely some machining is required of the block no matter which one you get?

Thank you
Lee

rockabilly · 15th July 2008, 08:19 PM

hi lee, you need a series 2 block from a turbo motor, it has oil feed and return already in but they are blanked off, so you just undue them,. also ion the front face of the block above the water pump it needs to be smooth, not a rough casting there are 2 types but most series 2 block are smooth, bernie.

thats my series 2 block. if you look in the middle at the bottom of the block you can see were i took the bung out for oil return, also the smooth area. you have too drill and tap that for the new tensioner positioning..

fletch.rb30 · 15th July 2008, 08:52 PM

yea, all r31 rb30's have the oil feed, and later vl commodore rb30's.
Where are you getting the block from? Aus or NZ? All rb30's in nz have the oil feeds.
Also, you will need an adapter plate, are you going to buy one or make it?

hytech · 16th July 2008, 12:26 AM

fletch.rb30

Is this the fletch I know?

And if it is what the hell are you doing in London?

If its not sorry obviously got the wrong fletch.

leeroy_25 · 16th July 2008, 12:20 PM

Fletch,
I was possibly going to source the block myself from Aus or NZ? I know a chap in Aus who may be able to sort something for me. Are the Aus blocks generally no good then? I have also been thinking about one that is currently on it's way from NZ.
Regarding the adapter I would probably buy it? I guess it's just a peice of ally with a load of holes to extend the sump fixings to match the RB26?

Do all blocks have the correct water feeds? And is it only turbo blocks that have the oil feeds? or do some N/A ones have them as well?

Thank you
Lee

rockabilly · 16th July 2008, 03:56 PM

lee some n/a blocks have no return for the turbo in them at all be carefull. also the sump adapters are tricky to make and cost about 400 quid, but worth buying..proengines in syndey sold me mine and it bolted straight on no problem..bernie

proengines-performance engines & cylinder heads

rods/pistons from here.

About Spool Imports - Spool Imports - Japanese Performance Parts

ahapartridge · 16th July 2008, 04:09 PM

Thor have blocks on the shelf, you can go and pick one with all the right bits or you could buy my fully assembled ready to go bottom end, see classifieds

gibson · 16th July 2008, 04:53 PM

bernie correct the N/A Series 2 blocks have oil and water feeds and oil 1 x return ..

The RB30e block is the better option

Just my 2p

Interesting thread Leeroy

Quote:

Originally Posted by rockabilly

lee some n/a blocks have no return for the turbo in them at all be carefull. also the sump adapters are tricky to make and cost about 400 quid, but worth buying..proengines in syndey sold me mine and it bolted straight on no problem..bernie

proengines-performance engines & cylinder heads

rods/pistons from here.

About Spool Imports - Spool Imports - Japanese Performance Parts

leeroy_25 · 16th July 2008, 08:18 PM

Thank you Gibson and all.. I read a slight tone of insult taken there Gibson? None intended at all.. Just gathering more info for myself rather than pestering you!! Thought you might think I was being a pain in the butt! And I still have a big decision to make! Just not time to calculate at present!

Lee

gibson · 17th July 2008, 04:17 PM

No lee not at all... good to see healthy interest in the RB30 . always

I don't know bernie but looks like he is a fan of the 30 aswell nice pics bernie

rockabilly · 17th July 2008, 05:57 PM

cheers tony,. one more to finish, best of luck lee whichever way you go..

fletch.rb30 · 17th July 2008, 07:16 PM

Quote:

Originally Posted by hytech

fletch.rb30

Is this the fletch I know?

And if it is what the hell are you doing in London?

If its not sorry obviously got the wrong fletch.

Hi Dick! Yes it is!

Its a long story, i went to the states back in feb, to have a look around and met this girl and she was coming here and somehow i found myself here...............

Will probably stay here for 2 years i suppose.

Your gtr's looking good on the new fuel.

fletch.rb30 · 17th July 2008, 07:22 PM

Quote:

Originally Posted by leeroy_25

Fletch,
I was possibly going to source the block myself from Aus or NZ? I know a chap in Aus who may be able to sort something for me. Are the Aus blocks generally no good then? I have also been thinking about one that is currently on it's way from NZ.
Regarding the adapter I would probably buy it? I guess it's just a peice of ally with a load of holes to extend the sump fixings to match the RB26?

Do all blocks have the correct water feeds? And is it only turbo blocks that have the oil feeds? or do some N/A ones have them as well?

Thank you
Lee

The aussie blocks are just as good as the ones that came to nz, but they got them first and the first ones didnt have the oil feed. We get lots of jap imports in nz, so there are loads of r31 rb30's around.

The adapter plate is a piece of 8 or 10mm steel. I made a few a while ago for myself and a mate, I knew a laser cutter so it was cheap, but have lost the cad drawings. The best ones i have seen are the pro-engines ones, but are pretty exp, around $900 aus but its a complete kit, easy as to install and you dont need any trick machining.

All the later vl blocks and all r31 blocks have the oil and water feeds

hytech · 17th July 2008, 08:08 PM

Quote:

Originally Posted by fletch.rb30

Hi Dick! Yes it is!

Its a long story, i went to the states back in feb, to have a look around and met this girl and she was coming here and somehow i found myself here...............

Will probably stay here for 2 years i suppose.

Your gtr's looking good on the new fuel.

Thats great to hear.

My son is living in London maybe you guys can get together.

Yes car is going great, just bought some Hoosier tyres yesterday, however they wont be here until next month, Hope I can get it into the 9's.

leeroy_25 · 17th July 2008, 08:25 PM

Thanks for the info guy's!

Fletch if you find those CAD drawings let me know as it will save me having to redraw/model them myself! I was intending a DIY job if I go this route! How Did you get the drawings? A bit of trial and error on getting the correct profile? reverse engineer something? What does the 'complete kit consist of? what other bits are needed exactly? crank collar? How is this fitted by the way?

Cheers
Lee

15th July 2008, 08:10 PM	#1 (permalink)
leeroy_25 GTR Register Member Join Date: Dec 2006 Posts: 522	RB30 Which block? I gather there is more than one RB30 block. When doing a RB30 conversion with and RB26 head for an R33 GTR how can I be sure I get the correct block? I gather you need certain oil feeds and returns and water feeds present and also positions for tensioner mountings.. Which of the blocks have all these facilities from factory or will it be most likely some machining is required of the block no matter which one you get? Thank you Lee

15th July 2008, 08:19 PM	#2 (permalink)
rockabilly rb30 710bhp Join Date: Oct 2003 Location: lancashire Posts: 1,049	hi lee, you need a series 2 block from a turbo motor, it has oil feed and return already in but they are blanked off, so you just undue them,. also ion the front face of the block above the water pump it needs to be smooth, not a rough casting there are 2 types but most series 2 block are smooth, bernie. thats my series 2 block. if you look in the middle at the bottom of the block you can see were i took the bung out for oil return, also the smooth area. you have too drill and tap that for the new tensioner positioning.. __________________ fancy the south of france. http://st-tropez.mysite.orange.co.uk/

16th July 2008, 03:56 PM	#6 (permalink)
rockabilly rb30 710bhp Join Date: Oct 2003 Location: lancashire Posts: 1,049	lee some n/a blocks have no return for the turbo in them at all be carefull. also the sump adapters are tricky to make and cost about 400 quid, but worth buying..proengines in syndey sold me mine and it bolted straight on no problem..bernie proengines-performance engines & cylinder heads rods/pistons from here. About Spool Imports - Spool Imports - Japanese Performance Parts __________________ fancy the south of france. http://st-tropez.mysite.orange.co.uk/

17th July 2008, 04:17 PM	#10 (permalink)
gibson GTR Register Member Join Date: Feb 2005 Location: hertfordshire Posts: 428	No lee not at all... good to see healthy interest in the RB30 . always I don't know bernie but looks like he is a fan of the 30 aswell nice pics bernie Last edited by gibson; 17th July 2008 at 04:19 PM.

17th July 2008, 05:57 PM	#11 (permalink)
rockabilly rb30 710bhp Join Date: Oct 2003 Location: lancashire Posts: 1,049	cheers tony,. one more to finish, best of luck lee whichever way you go.. __________________ fancy the south of france. http://st-tropez.mysite.orange.co.uk/

15th July 2008, 08:52 PM	#3 (permalink)
fletch.rb30 GTR Register Member Join Date: Jun 2008 Location: N.E London Posts: 58	yea, all r31 rb30's have the oil feed, and later vl commodore rb30's. Where are you getting the block from? Aus or NZ? All rb30's in nz have the oil feeds. Also, you will need an adapter plate, are you going to buy one or make it?

16th July 2008, 12:26 AM	#4 (permalink)
hytech GTR Register Member Join Date: Feb 2003 Location: Auckland NZ Posts: 109	fletch.rb30 Is this the fletch I know? And if it is what the hell are you doing in London? If its not sorry obviously got the wrong fletch.

16th July 2008, 12:20 PM	#5 (permalink)
leeroy_25 GTR Register Member Join Date: Dec 2006 Posts: 522	Fletch, I was possibly going to source the block myself from Aus or NZ? I know a chap in Aus who may be able to sort something for me. Are the Aus blocks generally no good then? I have also been thinking about one that is currently on it's way from NZ. Regarding the adapter I would probably buy it? I guess it's just a peice of ally with a load of holes to extend the sump fixings to match the RB26? Do all blocks have the correct water feeds? And is it only turbo blocks that have the oil feeds? or do some N/A ones have them as well? Thank you Lee

16th July 2008, 04:09 PM	#7 (permalink)
ahapartridge GTROC Member Join Date: May 2003 Location: Warrington Posts: 1,063	Thor have blocks on the shelf, you can go and pick one with all the right bits or you could buy my fully assembled ready to go bottom end, see classifieds

16th July 2008, 08:18 PM	#9 (permalink)
leeroy_25 GTR Register Member Join Date: Dec 2006 Posts: 522	Thank you Gibson and all.. I read a slight tone of insult taken there Gibson? None intended at all.. Just gathering more info for myself rather than pestering you!! Thought you might think I was being a pain in the butt! And I still have a big decision to make! Just not time to calculate at present! Lee

17th July 2008, 08:25 PM	#15 (permalink)
leeroy_25 GTR Register Member Join Date: Dec 2006 Posts: 522	Thanks for the info guy's! Fletch if you find those CAD drawings let me know as it will save me having to redraw/model them myself! I was intending a DIY job if I go this route! How Did you get the drawings? A bit of trial and error on getting the correct profile? reverse engineer something? What does the 'complete kit consist of? what other bits are needed exactly? crank collar? How is this fitted by the way? Cheers Lee

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