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Old 07-03-2011, 09:24 PM   #1
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RB25DET Top Mount Holset

A few seam to be interested in this so I'll give it a go.

This is what it started off as


Z32 AFM,
RSP 450 Turbo,
Hybrid GT Racing FMIC (780mm x 295mm x 78mm),
HKS SSQV,
Jun Style Inlet Manifold,
Plateau Honed Bores,
Fully Balanced Bottom End (With Clutch),
86.5mm Wiseco Forged Pistons,
GTR OEM Rods,
ACL Bearings,
Tomei Con Rod Bolts,
ARP Head Studs,
N1 Oil Pump
JUN Extended Oil Drive Collar,
N1 Water Pump,
RIPS Extended / Baffled Sump,
Oil Catch Tank,
ATI Damper Pulley 1000hp rated,
Power Enterprise 550cc Injectors,
Splitfire Coil packs,
HKS 1.2mm Head gasket,
Tomei Pon Cams (256 IN/EX, 8.5mm Lift),
Tomei Adjustable Cam Pulley (Exhaust),
Tomei Timing Belt,
Z32 Ecu with Nistune Daughterboard
19 Row Oil Cooler,


Z32 ecu has now been replaced with a Link G4 which I had idling on the above setup perfectly.

So far I've got an S-Tec manifold, S-Tec Wastegate, Holset HX35/40 hybrid and a divided transient T3/T4 adapter
.


I've already port matched the manifold with it being RB20/25/26 fitment the ports were out slightly.

Test fitted them tonight to see how bad the wastegate port interence was, these manifolds are supposed to clash with R33 chassis legs. I must be lucky, mine looks like I'm just about going to have enough room.

I've also been lucky with the turbo and cam cover clearance, if it wasn't for the T3/T4 adapter I'd be hacking chunks out of the cam cover.






Exhaust isn't going to work out how I wanted it to though, I was hoping to be able to use the standard downpipe and just make up a new elbow but the wastegate is now sat right where the downpipe used to come into the engine bay.
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Old 15-03-2011, 05:14 PM   #2
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only just spotted this thread mate! thats coming along for ya

when I had my downpipe made I had to send off my turbo n manifold - they then jigged it up and made a downpipe which took the ext wgate into account for me so mine came back a bit more plug-n-play

will be keeping my peepers on this thread ...the top mount skyline crew grows
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Old 15-03-2011, 06:56 PM   #3
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Quote:
Originally Posted by anthonymcgrath View Post

when I had my downpipe made I had to send off my turbo n manifold - they then jigged it up and made a downpipe which took the ext wgate into account for me so mine came back a bit more plug-n-play

DIY start to finish, ordered all the pipe on saturday so should be able to get something fabricated this weekend can't believe the custom exhaust places in my area don't stock manderel bends


Everything in the pic got removed though on saturday as it was just test fitted. It's now all bolted back up with gaskets etc. clocked the compressor housing on the turbo to line up with my cooler pipes, fitted my oil feed and linked the water pipes up as they are no longer needed.

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Old 15-03-2011, 08:01 PM   #4
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Exhaustsuk over at sheff could have prob fabricated something up for ya. Though your then messing about trailering the car about i supose.... Looking good either way, what kinda power figure you aiming for??

Had a exhaustsuk system on my old laguna, needless to say it out lived the car lol
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Old 16-03-2011, 08:09 PM   #5
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looking good. read allsorts about holset and i duno what to make of them. was going to put one on my 14a but after reading they are laggy and as they come off diesel buses etc they arnt right for smaller litre cars! so as this is hybrid whats been done to change it? i use my car for drifting so need boost there without silly lag, but like the idea that they cost very little compaired to HKS etc and make big power achievable to people on smaller budgets! keep my eyehole on this thread :P

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Old 16-03-2011, 09:49 PM   #6
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It's an HX35 hot side mated to HX40 cold side just like Garrett do the T3/4.

If your interested in holsets for drifting go on driftworks and type holset in the search. Quite a few people are running holsets
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Old 18-03-2011, 02:27 AM   #7
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cheers mate
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Old 18-03-2011, 01:14 PM   #8
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Looking good Andy, whats the quality of the S-tec stuff like?
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Old 18-03-2011, 02:01 PM   #9
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S-tec stuff looks very good quality, it's got decent thickness walls on the piping and it weighs a fair bit unlike the ebay jobbies that feel like your picking up a roll of tin foil.

A few people on here have got them, Bruce-m that I can think of off the top of my head, if you look in Bruce's project thread you can see quite a few pics of his being fitted at RSP and the wastegate piping being altered which for some reason mine has clearance.

They are universal fitment for all the RB engines so you have to port match it but if you've got access to a decent die grinder then it's an easy job to do.
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Old 18-03-2011, 02:25 PM   #10
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I've read their site and its all 321 stainless, so it should not crack! I've also seen the review below:

http://soldave.ismysite.co.uk/biginj...anifold-review

Very useful, did you clean up the inner collector welds ?

Did you buy it direct or off bruce? I think his was modified due to the wastegate used, not the standard one S-tec provide, its a HKS copy the S-Tec one if I'm right.

Looking like with the new ECU and turbine set up you'll be good for the 500 mark, is that the goal?
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Old 18-03-2011, 02:42 PM   #11
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I bought it direct which was hard work, getting replies from him is hard work and the time zones don't help.

The collector welds had already been done.

Should be good for a bit more than 500, hoping nearer to 600.
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Old 18-03-2011, 02:59 PM   #12
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How much it cost you in total with import / vat etc? did you get it during november/december when he had the sale on? Sounds like a good one then... you'll have to let us know how you get on once its all done, see how it holds up after some hammer.

I meant 500 ATH
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Old 18-03-2011, 03:18 PM   #13
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yeah got it in the sale. Cost me about 400 ish for the manifold after taxes etc. Probably a bit less, I had an evo manifold sent over in the same package so that will have added to the final tax bill.
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Old 26-03-2011, 02:37 AM   #14
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Done a few hours today. Finally managed to get hold of some exhaust pipe from a local company, the place I ordered it from originally 2 weeks ago still hasn't got any pipe in, not bad to say they make custom exhausts for a living and they haven't got the basics in stock.

Oil return pipe fabricated, it's very close to the manifold so I decided not to risk rubber pipe and put this together to clear the manifold


Main exhaust pipes on, still needs chopping and a flexy welding in and a lambda boss then pipe the wastegate into it




Fingers crossed I might get to a stage where I can start it up tomorrow.
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Old 26-03-2011, 03:17 AM   #15
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Wow Andy your really flying through this! Are you gonna run screamer or plumb ext wgate into downpipe like mine does?
Also will you be putting a boss in th downpipe for wideband sensor?

What ecu you got planned?

Also are you gonna be running non afm?

Really impressed.. wish I could have done th pipework all th way on mine but can't weld!

Lovin th oil return.. very similar to mine!

Oh you gonna stick an egt sensor in manifold?

Bein nosey lol
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