VspecGTR

Yep chris forged rb30 bottom end with rb26 head

Im looking to make around the 700bhp mark....i dont want to go and take it any further at this stage because i think tranny are goint to go kaput alot if i start winding it up.....but having the capability to "wind it up" will be a good thing later on down the line if i so wish to...... One other thing ive been pondering is ECU set up. England Apexi is widely used but others suggest hks, motech etc. Now the problem over here is there arent alot "god tuners" dabbling in the other but alot of in th Apexi range.....im thinking D-jetro simply to get rid of the AFMs i do know it takes longer to map, but the rbs AFMs unless upgraded to nismo,mines or even rb25s struggle so why not just rid, besides if i go holset then room in the engine bay is seriously going to be limited Yeah i did notice that chris....the lad going on about t3? or t4 turbos in another thread. If it was helpful response not a problem but when you get someone posting stuff up which has already been said then theyve obviously not read the thread through.......

Correct but also very wrong...... Have a look at the few links and read the whole thread please before posting stuff we know and are talking about....many thanks

That sounds crazy chris, what about the lag on it? noticeable and what rpm range did it spool up? Ive been in touch with a lad back here in England whos going the holset route but using the HX40 for circa 600bhp (obviously not my bhp range as you recommend the HX52), its going to be the AR and EX housing sizes that are going to be the most important and probably give the biggest headache. The lad back here is going for 16cm housing (doesnt specify which) but he has had problems finding a one with a T4 fitting so therefore has gone for a 19cm housing to get things started off. What are the sizes im looking for with the HX52? and forgot to mention im looking to spend around £600 - £800 GBP on a blower just so you have an idea of what my budget is for one.

So its a copy chris? has to be dont it with holset being based in England? Also did you read the email i got back regarding BW turbos?

Like you i have a second car and the R33 is a play thing not a car i use every day therefore i dont require its services, got other supporting mods such as ecu etc etc....this is a long term project with no ETA im not concerned about the length of time it takes or the price its going to cost (within reason of course) i want to show those in England that a different route can be taken that doesnt mean garrett or hks which the majority go for simply because "its a safe bet" Please keep me upto date though on your project Cheers

And another email recieved but this one is regarding BW with a little more information Hello, Thanks for your interest in our products. The power you want to acjhieve with your setup is not too hard. We can go with a Borg Warner S366 T4 .88A/R which is capable of 700WHP. Turbo is $1100.00 plus shipping. Holset is more diesel oriented type of turbocharger. Let me know if you have any other questions.

Just had this email from one of the guys in the U.S doesnt really give a specific amount of information (none at all to be honest) but ill share with the rest price sounds reasonable Chris but what about the inlet and ex sizes ? think this is going to be a long drawn out project now.....espcially after reading the other link you posted up from that other forum Hi, We can get you both rebuilt or used HX40 and HX52 turbos. The rebuilt units come with a warranty of 1 year. The used units are guaranteed to be in good rebuildable condition. The HX40’s come in several frame sizes or with Bullseye exhaust housings for an additional cost. Your cost on the rebuilt units is $525 plus shipping on either the HX40 or the HX52. The used HX40 units are $200 plus shipping and the used HX52 units are $135 plus shipping.

Have to import them matey.....had a few prices given and a forged bottom end rb30 is approx £3,000 GBP doesnt include shipping...so still looking but thats the best price ive had so far.

I aint an aussie

With the holset turbos.....how much modification to the coolant lines will be needed? slight? or complete new lines for lubrication/cooling the journal bearings?

are you going to run an external wastegate? or does this turbo have an internal wastegate? unsure myself? When do you plan on doing the change mate? Be very interested in the results.....im not going full rb but forged rb30 bottom end and rb26 head fully rebuilt. Chris what do you reckon to the setup?

Mate if you go a few pages prior to page number four that we are on now... Chris aka Cjmartz2k pointed out a few things about those turbos.....which in my opinion makes me now dubious about getting one.....id have a look before jumping in. Also when you read the description of these turbos they describe them as "holset based" they arent holset turbos so ive questioned myself if they are just holset internals stuck into another housing. Why paint them black? wonders if they are second hand housings alsol But please do keep me informed im still looking around at the moment.

Yeah is a bit of a bummer chris....knowing that a manufacturer here in england would probably charge and arm and a leg for a single unit...like you say they are mass produced for the likes of scania etc so they can run diesel engines...only to find one over in the states then get it cheap over there but we have the cost of shipping then our dreaded import tax and VAT. So what that will cost i dont know. But having a quick browse on US Ebay there are some interesting turbos especially this one that has caught my eye Borg warner ive sent an email off to these lads to find out what the spec is and what they suggest for my setup....Will have a look at the suggested seller youve recommended and see whats on offer there. To me there defo has to be a viable alternative and "buck the trend" away from garret and hks those turbos are expensive, im not saying cheaper is not necessarily better but surely there are other viable alternatives that the two big hitters cornering the market have on RBs especially over here in england.

what would a borg warner make ie this particular model? Borg Warner 57trim gm8 t4 turbo

Over here (england) With holset being a english company we have had a few lads make enquiries with them .....as they are looking to hook themselves up with holset. Problem being Holset themselves DONT want to know about people sticking their turbos on cars. Not very helpful in my opinion. I want to dare to be different and not go the usual Garrett, hks big single route i want to try something out of the norm and show that you can do a project make it reliable and show you dont have to have big bucks to produce a good street weapon. There are a few threads on GTROC using holset but one in particular is a twin holset set up on a Finnish car. I hate my country for being so damned expensive! Finn holset 1000bhp

Thanks for the reply Chris. so better at looking at something like this one then ?HX40

Hey guys. Been doing alot of reading up on holset and here in Pomme land there are only two i know of that are going the holset route. These cars arent up and running yet, but im quite interested in getting one and fitting it to my gtr now the question i have if Mr CJMARTZ2K wouldnt mind answering or anyone who is using a holset is....Im currently building an Rb30/26 looking for around 650bhp - 700 not at the wheels but fly.....what holset turbo would people recommend? Many thanks and great site....fellow skyline owners Just one other thing what would this holset be like for my project? gsr hx35