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looking good mate. the HKS manifolds are good. there is definitely some merit in bridging the mani's (at least on paper). and the apexi turbos are great too. I have only been in 1 GTR with them and not driven it, but have tried them on a few other cars SR20s etc. and they are definitely good. :P

I had an Apexi turbo (AX53B70 P25) on my RB25, it was great made good power (250rwkw at 18psi) and my tuner remarked that it was one of the most responsive turbos he had tuned. However as i found out to my detriment they do not like to be oversped being ceramic turbines they will crack, get unbalanced ang break the shaft, they are no where as bad as stock turbos and if you keep the boost under 20psi you will be laughing!

I had an Apexi turbo (AX53B70 P25) on my RB25, it was great made good power (250rwkw at 18psi) and my tuner remarked that it was one of the most responsive turbos he had tuned. However as i found out to my detriment they do not like to be oversped being ceramic turbines they will crack, get unbalanced ang break the shaft, they are no where as bad as stock turbos and if you keep the boost under 20psi you will be laughing!

are they ceramic turbo's? that cant be a good thing :P

are they ceramic turbo's? that cant be a good thing :down:

no, definitely not ceramic. i have seen configurations which include these turbos running fairly high boost. ie 1.8bar plus. if they were ceramic, i doubt they would hold together under that sort of pressure.

  • 4 weeks later...

wow, epic mate!! going for a very similar build myself except using the t517z option. ran them for 5000 km on factory motor.. engine went up to builders yesterday arvo. some of my internals arent as flash but your detailed build thread will certainly help when the time comes to put mine back together. ill be following this thread for sure. its inspirational!!

thanks!

The turbos are definatley not ceramic wheeled. The Apexi range of turbos are a very good turbo and I am confident that they will make good power. These turbos will have slightly more lag on a 2.6lt than a pair of 25/30's or -5 garrets due to their slightly larger size but will make really good top end with good mid range response.

Atomicbomberman and myself have both been extremely busy with work and some other commitments so there has not been a great deal of progress but there should be some updates on the build coming soon.

  • 3 weeks later...
  • 4 months later...
Nice to meet you guys at Superlap :) Now, any updates?

yes it was! its great to be able to put faces to usernames! Now...... updates...... yes....... very soon. Theres been some slight changes....... will let you in on it soon......!

  • 2 weeks later...
updates updates updates.... damn it!

Ok, sorry ive been a bit quiet. Photos are all over the place, and i need to get them into some sort of order. I've got so many photos. sorry if the picture sequences get a little long winded. I'll try to pick up where i left off.

Here is a front view of the turbos mounted on the manifolds. For those with a keen eye, you will notice that there is a 5mm stainless spacer between the manifolds and the turbo exhaust housings. This was because there was a clearance issue where the turbo housing slightly interfering with the manifold. I think this was due to a mixture of brands, HKS manifolds, Apexi Turbos and Tomei dump pipes. This is another example of where Daz doesnt cut any corners. Any other builder would have probably jammed in a few more gaskets to get the clearance and be done with it. Instead he had the spacers custom made using a laser cutter for a neat and professional finish.

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Here shows the fittings and lines to the block.

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Here is Daz sorting out the fittings on the turbos

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Here shows the fittings to the turbos

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On goes the lines

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Water and oil lines were fairly tight together

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All hooked up.........

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BUT.................................THE LINES LOOKED SO MESSY! The lines in the Apexi kit were way too long.

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Daz disconnected the lines and resized them all. Mr RUZIC (Ruzic Engineering) and Dr Tran (9krpm) were both there for Quality Control.

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Daz seems to have a tool for EVERYTHING!

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MUCH MUCH BETTER!

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Disconnected once again to put the heat sleeves on.

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Getting closer to the DESIRED look! :) I really hope the Apexi's give the response i'm looking for.

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Good to know the Z-TUNE uses IHI based turbines too! If my car runs half as good as the M-speed or Z-Tune i think i'll be a happy man!

ztune05_turbine_1600.jpg

Edited by AtomicBomberMan
Looks good bomberman.. are they Tomei dumps? It is probably in the thread somewhere but c'mon it is Friday!

Thanks bigmikespec, yes theyre tomei dumps with ceramic coating.

those last 2 images are cool - what application did u use? or did hang the engine with fishing line haha

Come on marko! get with it! everyone knows these are all untouched images! The shot was taken with high shutter speed while i was peforming "short bursts" of levitation. :P

Daz used multi layer hi temp silicone hoses for the oil return on the turbos. Bought the right bends and cut them to size. Very neat and tidy. I cant believe how expensive these were!

Rear turbo. The gooey stuff between the the return line and the block is not oil. Its a sealant for the gasket.

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Front turbo

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Secured by worm drive clamps

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Edited by AtomicBomberMan

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