R34 Gtr Build

[BOBBYr34]

Here is a detailed Vid on how the merge of the wastegate pipe will be down. You need to listen to it with full volume and listen to what John has to say.

[r33_racer]

What stage pump are you going to be using? On our race car we run a 4 stage pump which scavenges two from the sump pan and then one from the back of the head. We are still using internal draining, though really the ideal would be to weld up all the oil returns and just let that one scavenge do the returning as that would avoid windage induced from oil draining right into the cranks vacuum trail. Has John considered doing something like that already?

Loving this build mate. Keep it up!

[GTRNUR]

Here is a detailed Vid on how the merge of the wastegate pipe will be down. You need to listen to it with full volume and listen to what John has to say.

Awesome stuff!

[bigmikespec]

What stage pump are you going to be using? On our race car we run a 4 stage pump which scavenges two from the sump pan and then one from the back of the head. We are still using internal draining, though really the ideal would be to weld up all the oil returns and just let that one scavenge do the returning as that would avoid windage induced from oil draining right into the cranks vacuum trail. Has John considered doing something like that already?

Loving this build mate. Keep it up!

Interested in answer to this...

[zebra]

Here is a detailed Vid on how the merge of the wastegate pipe will be down. You need to listen to it with full volume and listen to what John has to say.

Always wondered about the advantages of something like that, following the direction of the turbine wheel/exhaust gas rotation.

The further this build goes the more impressed I am with the thought going into it.

[JEM Dyno]

Here are some photos of Bobby's RB26 head with porting and modifitcations.

Bob would you like to explain what's been done here?

Thanks

JEM

[bigmikespec]

Always wondered about the advantages of something like that, following the direction of the turbine wheel/exhaust gas rotation.

The further this build goes the more impressed I am with the thought going into it.

Inducing swirl and/or taking advantage of it is very common in fluid dynamics and effective. Clever.

[BOBBYr34]

What stage pump are you going to be using? On our race car we run a 4 stage pump which scavenges two from the sump pan and then one from the back of the head. We are still using internal draining, though really the ideal would be to weld up all the oil returns and just let that one scavenge do the returning as that would avoid windage induced from oil draining right into the cranks vacuum trail. Has John considered doing something like that already?

Loving this build mate. Keep it up!

I am running a 4 stage pump, and yes the ideal way would be to weld the oil drains up , and we did not weld it however we have used bungs for all exept the ones on each ends of the head.

[BOBBYr34]

below is a pic of the diff oil cooler supplier EARLS SILVERWATER

If you want the best service and advise about fitting give Chris a call at Earls fitting 97486011 , they are very helpful.

[r33_racer]

Ok. So the oil return holes are bunged up except the very front and very back. Interesting stuff. That would certainly help.

[Nee-san]

Bobby, is that exhaust expended around each bend in the system ?

[BOBBYr34]

Bobby, is that exhaust expended around each bend in the system ?

Gully,

Are you talking about the Wastegate merge or the ARC cat back exhaust?

[Nee-san]

The ARC exhaust ?

[NYTSKY]

The ARC exhaust ?

Titanium ARC cat back. Pics dont do it justice.

[BOBBYr34]

The ARC exhaust ?

Diameter around the bend is the same on the striaght. Just a very nice lobster back bends

[GTR81]

Awesome work Bobby keep it up!

The guys that dont think one man can build something better than a factory need to read the Britton motorbike story.

[BOBBYr34]

I have all the Nismo arms you csan buy for a R34 Gtr installed See below pic.

[bigmikespec]

Need some more updates Bobby!

[paulR32gtr]

Need some more updates Bobby!

+1 main thread I am watching at the moment!!

[BOBBYr34]

Ok,

The latest is the merge is getting cut up to form the shape that John had said on the Vid above i should be able to get some more pics on it tomorrow.

The next step is to install all the Motec system i have done some work in installing it, will get some pics up tomorrow. The other thing i am installing is the zeitronix E85 sensor to determine the concentration of Ethanol.

I should also get some pic of the bottom end as this has been completed.