RB34???

Discuss the RB20, RB25 and RB26 series engines.
vin diesel
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i was talking to this guy at JSAMOTORS.COM and he said that they have a rb34 for sale for $8000. i never even heard of an rb34. the 2jz is capable of 3.4L so i guess the rb30 could be too?


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eh?
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They don't know what they're talking about.

idahotuner
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i think the 2jz is capable of 3.4 to 3.5 liters. i think it would be sick to done one that size some day too. just increase bore and stroke

idahotuner
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the rb30 is a bored out rb26 so i am not sure how much more it could go.

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eh?
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idahotuner wrote:the rb30 is a bored out rb26 so i am not sure how much more it could go.
Do you work for that shop? J/k lol

The RB30 is a physically taller block vs the RB20/25/26 blocks. Other RB29/30 kits use liners+ deck plates to increase the stroke.2mm over bore is the max you're going to find and I was advised not to go with 2mm over size by Ross racing.

sean8564
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The RB30 was originally a SOHC motor used in Australia on the Holden Commodore and a lot of people use RB25DET or 26 heads on the block it is like almost and inch and some change taller i have a picture of one. But will have to up load it to photo bucket then link it here

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Coolwhip
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they may be mistaken a R34 RB26 as a RB34.

Largest displacement RB manufactured was a RB30 as mentioned. Largest displacement RB modified would be a 3.3L (steming from a RB30 block).

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cdorhout
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sean8564 wrote:The RB30 was originally a SOHC motor used in Australia on the Holden Commodore and a lot of people use RB25DET or 26 heads on the block it is like almost and inch and some change taller i have a picture of one. But will have to up load it to photo bucket then link it here
Yeah, what he said.

3.4L RB does not exist. Spool imports made a custom crank for a RB30 but it didn't get it to 3.4L

vin diesel
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well i was talking to the guy about rb20's and 25's and then he said "if your real serious, we have a rb34 for sale. for $8000"

Joe
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idahotuner wrote:the rb30 is a bored out rb26 so i am not sure how much more it could go.
hahaha no. not at all.
vin diesel wrote:well i was talking to the guy about rb20's and 25's and then he said "if your real serious, we have a rb34 for sale. for $8000"
well he is completely wrong. i wouldnt buy from them.

vin diesel
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Joe wrote:hahaha no. not at all.

well he is completely wrong. i wouldnt buy from them.
well thats why i have been calling some companies. i want to make sure that i know what im getting when i order a motor this summer. and btw japanmotorimport.com has $1000 rb20's right now. my friend just got one and he was pretty happy with their service. motor looked pretty fresh

idahotuner
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hmmm from waht i had read on rb motrs that is waht i had found. guess i need to do my research again.

how does and sr30 sound. it might be available soon. using a block plate

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eh?
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RB30 kit

oem RB30 block

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cdorhout
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eh? wrote:oem RB30 block
LOL, that is my block in the back of that truck. The second one back on the right. It doesn't look like that anymore. Got it from Pirate87.

Darius
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Buy it! That sounds totally awesome! jk

Try to get them to send you some pictures of it.

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rbs14kouki
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RB33 is the bigest RB built up to date !!!! http://www.youtube.com/watch?v...annel

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S14-NEO
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[QUOTE=eh?]RB30 kit

lmao...man you better bend down and grab your ankles to prepare for the price of that kit....

Darius
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Shouldn't there be two head gaskets for that riser or is it expected to seal against the iron block to keep the coolant and oil in?

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cdorhout
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Darius wrote:Shouldn't there be two head gaskets for that riser or is it expected to seal against the iron block to keep the coolant and oil in?
That's what I was wondering too. Why in the hell would you do a RB30 that way, thats just dumb.

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S14-NEO
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really not that dumb, considering the RB26 block has much stronger webbing in it to support more power ...that kit works very well... i spoke to a few people mainly Rob over at R.I.P.S in New Zealand and he said they are a nice option for big power.

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eh?
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S14-NEO wrote: really not that dumb, considering the RB26 block has much stronger webbing in it to support more power ...that kit works very well... i spoke to a few people mainly Rob over at R.I.P.S in New Zealand and he said they are a nice option for big power.
I think if Rob can run 7.86@ 177 mph with a stock RB30 block&crank, I don't think strength is an issue

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S14-NEO
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eh? wrote:
I think if Rob can run 7.86@ 177 mph with a stock RB30 block&crank, I don't think strength is an issue
oh i know man, its like i said..its an option although a very expensive one but sooner or later the RB30 blocks may dry up and be nearly impossible to find...but how in the hell would i know i dont live over there....hehe

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Coolwhip
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I'll try to find the comparison with the RB28(stroked RB26), RB30 (OSG Stoker Kit), and the RB30 (conversion of the RB30E block).

Shows the differences in stroke and piston placement really trick stuff happening in the OSG block.

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GTRs13
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The deck plate is fully peremeter "O-ringed".

Search O-ringed turbo engines. That's how they withstand 40+ psi.

Then, work in Japan all your life, start a company that rivals HKS, and engineer this kit, sell it, and have numerous magazine covers.

Then say its "Dumb"...

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cdorhout
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I didn't say the owner of OS Giken was dumb. Obviously I said it was dumb to build an RB30 out of their kit.

You spend $25,000 building OS Giken's RB30, and I'll build one my way. We'll use the same turbos, manifolds, ECU, etc. Then we'll see if you still think it isn't dumb.

RIPS gets 1400 hp out of a RB30 block.

Oh, and on that deck plate, how do the piston rings make that "jump" from the RB26 block to that extention plate? That just seems janky to me, and it would be hard as hell on piston rings. But I wouldn't know, I don't run 50psi I guess.

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Carl H
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the os kit has new liners...

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rbsileighty
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The easy way to confirm or deny anything is to ask... what's the base motor (RB30 etc) and what's in the motor that makes it an "RB34" and worth $8k

8k can go a long way with RB's these days if you're doing the work yourself... but as far as this motor goes... proof is in the spec/build sheet. Sounds like a scam to me though, but if they can prove it... let them prove it with a lot of paperwork

Darius
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The top OS Giken plate may be o-ringed, but the face that mates with the stock block is just a regular gasket.

This kit is for the people who have money to burn. Just like the Tomei built engines and all that other brand name crap. I think it is cooler to get the same results and walk around with $10,000 left in my pocket.

240z4u
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Darius wrote:
I think it is cooler to get the same results and walk around with $10,000 left in my pocket.
Hot damn, your buying lunch!

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Coolwhip
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240z4u wrote:
Hot damn, your buying lunch!
Count me in I'm starving!


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