The Turbocharger Upgrade Faq

[paulr33]

someone should start working on a turbo charger upgrade faq

day after day we get posts of the same stuff

- is this turbocharger any good

- when will it make boost

- what does a 54 trim wheel mean

- what dump flange does it use

- is this $400 TO4e ebay turbo going to be awesome

etc etc

a lot of the old good info is gone as most dont take the time for good replies

as they have done good replies 6-12 months ago so most just get short info etc

any takers?

[adgey]

Someone should start working on a search faq

[Devils_Advocate21]

Alot of FaQ expansion threads could be done ontop of this instead of the "Use the search function" Covered many times Thread locked scenario that usually follows suit. Another good example would be the BOV and Atmo BOV scene. Simplified sections that could be seperate of the Quick Ref guide that way there be alot of good info covered in the one topic instead of links to this that an the other.

Full on agree with ya paul

Cheeers

[R31Nismoid]

Someone should start working on a search faq

Type in what your searching for.

Press search.

In all honesty - the search is that good here now i never miss finding what im looking for when helping others.

[Guilt-Toy]

i thought there was a bug on the site, where new users with under 500 posts did not have access to the search button.

[r33cruiser]

hhm ok i will start then

- garrett/gcg 3540 BB, modified with titanium wheels.

-it makes boost about 2800-3000rpm (at a half throttle test on stock ecu/ pfc was being prepped at the time)

- dump flange is circular with a 4 bolt pattern.

- forgive my ignorance, all i know is its a/r .70, with an exhaust of 0.82

- and is water, and oil cooled , and externally gated.

Edited March 26, 2008 by r33cruiser

[Lithium]

i thought there was a bug on the site, where new users with under 500 posts did not have access to the search button.

I suspect I'm still under that post count

I got this for $350 - does anyone know if this turbo will make a decent upgrade to my old VG30 turbo (housing pictured on the left)? Will I get full boost by 3000rpm? Chur:

(j/k)

[Lithium]

Gah wtf I'm sure I wrote more in that post. What I must have deleted was that while its a good idea, and many forums have done so - I suspect if someone isn't going to search the forum or use Google to find the information, how much of a pain in the arse would it be if people (I'd be willing to help if a team effort was going to be put together to write stuff up) never actually used the data compiled?

[discopotato03]

I think you'd find that GT40 based turbo a little hard to mount .

Your call people , if you want I can bash out the basics of what fits , what can be made to fit and don't bothers .

Other than that people really need to get and idea of how much air (in lbs mass) is needed to make X amount of horsepower so that they can look at compressor maps and have some idea of whats possible . Temper that around appropriate exhaust flows and I think thats about as close as you'll get in such a broad field .

A .

[tridentt150v]

I think the concept has merit.............we all get sick of answering the same requests all the time and yes we do get short/abrupt and minimalist.

But what we all have to remember is that we all started in that exact same position years ago ourselves - and short/abrupt and minimalist can be seen as downright rude.

I'm no expert, and I've asked some pretty dumb questions at times, and there has always been somebody there with the patience to help.

And I've stuck to it and learnt as I went along to the point where I can actually now help out at times.......all thanks to SAU [and spending $$$ modding my skyline].

As a forum, we don't want to see potential/members disenfranchised or leaving because we fail to answer what may be [to others] a simple question. And that is the danger.........

[adgey]

Type in what your searching for.

Press search.

In all honesty - the search is that good here now i never miss finding what im looking for when helping others.

I find it ridiculously easy myself. Just use a keyword of what I'm looking for and set it to only search topic headings and so far I've never really had any trouble finding what I'm looking for but for some reason people tend to have problems.

Just mentioning last week I think I saw three threads started about fuel pumps for r33 gtsts. I don't even think the other threads had left the front page. Now that is just lazy!

[RubyRS4]

I don't know how to search.

Can anyone tell me how to search or where I can find a thread about how to search?

:laughing-smiley-014:

[75coupe]

Is this "not wanting to research" thing a disease of the young these days, as I find alot of younger people don't want to search for answer they just want someone to tell them... they learn nothing and then take it for granted that what they are being told first is totally correct then pass that misinformation onto the next unknowing soul...

I'm a huge poster to these forums since I have found alot of information on skylines in here...

[paulr33]

ill start the turbocharger faq

[infamous_t]

someone should start working on a turbo charger upgrade faq

ill start the turbocharger faq

[some_cs_student]

Is this "not wanting to research" thing a disease of the young these days, as I find alot of younger people don't want to search for answer they just want someone to tell them... they learn nothing and then take it for granted that what they are being told first is totally correct then pass that misinformation onto the next unknowing soul...

People are more time-poor so having summary threads vs searching and reading a few opinions and then reading the next 10 threads about it, I know what I'd choose

Anyway, great idea and good luck with the turbo FAQ...

Oh, and I'm pretty sure I'm under that 500 posts but I can search....

[GeeTR]

F U C K I T Paul... make me these fools search.. don't give in... lol

Edited March 26, 2008 by GeeTR

[discopotato03]

What fits - the exhaust manifold .

Lots of people come here asking if XYZ Turbo will be a winner for me on my Skyline without knowing anything about Turbo XYZ .

Before we look at any of the performance aspects of any turbo we need to know if it will physically fit as in bolt to the existing or alternate exhaust manifold .

Skylines in standard form (R30 - R34) use one of two distinct exhaust manifold mounting flange sizes and the crossover is from single to twin parallel turbos (RB26 GTR) .

The single turbo Skylines such as DR30/HR30/R31 RB20DET /R32/33/34 all use a format known as the T3 mounting flange and stud pattern .

The GTR with its twin turbo'd RB26 uses the T25/28 (same) flange size and stud pattern .

There are minor variations in the actual manifold and exhaust housing port sizes but the essential thing is that a T3 flanged exhaust housing bolts to a T3 flanged manifold .

When assessing a turbo upgrade probably THE first thing to know is does it have the correct size mounting flange because if it doesn't or can't be corrected its a wastes of time . It has to be able to fit .

Most people seem to go with Garrett Turbochargers or versions of them sold through performance houses such as HKS .

There is a lot of confusion out there because Garrett makes the turbos in generic form and HKS sells them in slightly different form to suit a specific car/engine .

Back to the flanges .

Garrett makes T28 and GT28 turbos but they only sell them with T28 flanged exhaust housings . HKS also sells GT28 turbos but for single turbo Skyline applications they have T3 flanged GT28 turbine housings made for them so they bolt to a Skylines T3 flanged exhaust manifold - they also have the Skylines std dump flange pattern so std dump pipes bolt up in the std location .

The bottom line is that if you want a properly engineered exhaust housing to mate a GT28 turbo to a single turbo Skyline (R32/33/34) you need HKS's exhaust housing . The HKS turbos that have this housing (and are any good IMO) are the GTST/GTt Skyline specific GT2530 , GT2535 , GT-RS which is their name for a GT2871R 56T .

This exhaust housing is only available in the one 0.64 A/R ratio size .

This housing also bolts up to Garrett BB GT28 turbos such as the GT2860RS and the 3 GT2871R's .

Some people like the idea of boring their Skylines original T3 flanged Hitachi exhaust housing to suit a Garrett turbo but its a compromise because its designed for a smaller diameter ceramic turbine .

Aftermarket T3 flanged housings are available but how much actual development went into them is anyone's guess .

Once you leave the GT28 turbine based turbo series the performance ask is higher and so is the lag or boost response (boost threshold) potential .

The next larger Garrett turbine series is the GT30 family in two forms . Firstly the cropped or ground down 56mm version and secondly the full or 60mm sized version .

Exhaust housing wise there is a lot of potential to f**k up here because again only HKS make a proper T3 flanged housing to suit that cropped turbine and a single turbo Skyline and they are on their GT2835 Pro S turbos .

Both Garrett and HKS screwed up badly by offering these cropped GT30 turbine based turbos in bored out GT28 exhaust housing to suit CA18 and SR20DET applications . Avoid them like the plague . They won't bolt to you Skylines single turbo T3 flanged manifold and adapters only make the situation worse by forcing the exhaust gasses through a smaller than necessary port .

For the full sized GT30 turbine based turbos ie the "real" GT3071R and the "real" GT3076R the situation is much simpler and easier because Garrett now sell propper GT30 T3 flanged integral wastegate (IW) exhaust housings which will bolt to your single turbo Skylines exhaust manifold . You may need a spacer plate between the exhaust housing and the manifold so that the compressor housing clears the exhaust manifold but thats easy and cheap .

The real GT3071R and GT3076R have the potential to make power way beyond traction in a 2WD Skyline and if pushed to their limits can support ~ 420 and 540 Hp .

The GT3582R (AKA GT3540R) is also available through Garrett with T3 flanged IW exhaust housings and may suit some though I think a bit over the top for a street RB25DET let alone an RB20DET .

Out of time more later .

My opinions only , cheers A .

[adgey]

Can we maybe make the thread a little discussion one?

I find there are threads out there that end up 200+ pages and a lot of it has nothing to do with the topic

[Kaido_RR]

here is my input

Car: 93' R33 GTS-T

Turbo: HKS GT2835 PRO S

Kit: Yes

Items Included in the kit: 2835 Pro s turbine (0.68 rear housing), Hks dump pipe (split), braided water and oil lines, hks heat shield, clamps, silicon joiners, elbow pipe (connecting turbo to i/c piping), intake pipe, afm silicon adopter (suit r33 and z32 afm), hks air filer + adopter to suit afm (r33/z32), gasket

Extra Information about the kit: The kit does not required a gasket for the turbo -> dump, i have personally had a friend in japan contact hks to find out about this gasket, after afew mistakes (wrong gasket being sent) they reply with the turbo kit does not required a gasket. If you check the design of the dump pipe it has a trench which goes around the outside of the flange from my understanding this is to created a vacuum seal between the turbo and dump pipe.

Results: 251rwkw @ 16psi, full boost by 3200rpm - results where achieved with stock cat and mild tune; 1/4mile time of 13 flat with 112mph

i will add more information later

-if anyone wants to know something just ask and i will add

Edited March 27, 2008 by [Michael]