Jump to content
SAU Community

Recommended Posts

Hi Guys,

Just wondering if anyone has recommendations for places to get some machining done, either in Sydney or Wollongong. I need to get the surfaces machined on my exhaust manifolds and the tongue removed on these Greddy/Trust split front/dumps....

Speaking of which, those of you who have used the Greddy/Trust extension pipes with turbos that already have a exhaust/wastegate split, how much did you have taken off?

Cheers,

Lucien.

Link to comment
https://www.sau.com.au/forums/topic/107755-machine-shop-recommendations/
Share on other sites

lol

I had this thought when looking at the 34 N1s next to some seperated dumps. as your SS have the same exhaust housing as the 34 N1s with the integrated seperator I would take it all off.

lol

I had this thought when looking at the 34 N1s next to some seperated dumps. as your SS have the same exhaust housing as the 34 N1s with the integrated seperator I would take it all off.

Yes, I was thinking just to have the tongue machined flat. However, looking at the exhaust housing on the HKS's, the split finishes about 5mm from the top. I was just wondering (out loud) if its worth leaving a mm or two of the tongue sticking out of the front pipes for a closer fit. Obvious issue is that the metal is going to expand when its (very) hot...

yes, i thought about that too, but i think it's fine (and safer) to leave that little gap.

Yup, again, agreed, but thought I would throw it out there in case some wisen old sage knew better. I wonder how disruptive to flow having that gap will be? It interesting to note that there is a gap of about 1-2cm in the divider at one end on the exhaust housing to allow gasses to move from the exhaust wheel side to the wastegate side.

SW20-GT: Thanks tosh, I will call them tomorrow.

If anyone has any other recommendations, fire away.

Depends on the turbos you have. If you have Hks GTSS's then just machine the lot out, thats what i did . I must warn you they are a bastard to fit on .... and you cant fit the turbo brackets on them either .

Depends on the turbos you have. If you have Hks GTSS's then just machine the lot out, thats what i did . I must warn you they are a bastard to fit on .... and you cant fit the turbo brackets on them either .

Yup, they are GT-SSs. I assume you mean have the tongue machined off the dump/front as opposed to machining out the exhaust cover.

I'd be interested to hear anything else you have to say about installing the GT-SSs (I was going to post a question about it anyway). By turbo brackets, I assume you mean the turbo support braces/brackets? Do the foul on something, or just not fit period? Any solutions/recommendations (or any other thoughts)?

Thanks :rolleyes:

Yup, they are GT-SSs. I assume you mean have the tongue machined off the dump/front as opposed to machining out the exhaust cover.

I'd be interested to hear anything else you have to say about installing the GT-SSs (I was going to post a question about it anyway). By turbo brackets, I assume you mean the turbo support braces/brackets? Do the foul on something, or just not fit period? Any solutions/recommendations (or any other thoughts)?

Thanks :P

I assume you have a 32 gtr. If you are going to fit them on the car i dont know how hard it is but it wont be easy . I have fitted turbos many times on a gtr with engine in the car but never thses bastard dumps ( they are a bastard let me tell you ) . I fitted them on a 34 gtr but with engine off the car and with gtss turbos all i did was machine off the tongue of the dumps flat then bolted them on the turbos . When i tried to assemble the engine the o2 censor ( rear dump) was in the way of the coolant and vacium tubes so i had to mod the tubes to fit them on !! Depending on where your rear dump o2 bung is you may have to do the same too .

If you have a good look at your dumps you will see there is no place to bolt the turbo support brackets and unless you go to a lot of trouble to make some different bracket you cant bolt them on .

The best solution ? Sell them and use HKS dumps , they are a direct bolt on job and eveything fits on .

The other thing you will find is :The rear dump ( that bastard again ) will be touching your air cond discharge hose, if you leave it on it will melt it in about 5 minutes so make sure you remove it and replace it with a copper tube ( a bastard of a job on the car after you find out it touches ) so do it while the turbos are off the car and you have plenty room there .

The only advantage with these dumps, the front pipes are very easy to fit on !!

If you need to know anything else feel free to p.m.

Have you talked to Nath about the machining? He can help you out, he has everything in house

No, it never crossed my mind he did this sort of thing in house? Thanks for the tip. I'll get on to all the recommended places on Monday; got distracted today :D

  • 1 month later...
I assume you have a 32 gtr. If you are going to fit them on the car i dont know how hard it is but it wont be easy . I have fitted turbos many times on a gtr with engine in the car but never thses bastard dumps ( they are a bastard let me tell you ) . I fitted them on a 34 gtr but with engine off the car and with gtss turbos all i did was machine off the tongue of the dumps flat then bolted them on the turbos . When i tried to assemble the engine the o2 censor ( rear dump) was in the way of the coolant and vacium tubes so i had to mod the tubes to fit them on !! Depending on where your rear dump o2 bung is you may have to do the same too .

If you have a good look at your dumps you will see there is no place to bolt the turbo support brackets and unless you go to a lot of trouble to make some different bracket you cant bolt them on .

The best solution ? Sell them and use HKS dumps , they are a direct bolt on job and eveything fits on .

The other thing you will find is :The rear dump ( that bastard again ) will be touching your air cond discharge hose, if you leave it on it will melt it in about 5 minutes so make sure you remove it and replace it with a copper tube ( a bastard of a job on the car after you find out it touches ) so do it while the turbos are off the car and you have plenty room there .

The only advantage with these dumps, the front pipes are very easy to fit on !!

If you need to know anything else feel free to p.m.

Just for those who are searching for info on the above, I have posted a reply here:

http://www.skylinesaustralia.com/forums/in...dpost&p=2124191

APM in Albion Park seem to do some pretty great work.

In case you didn't see in the post I linked to above, thanks for the recommendation to Oak Flats Muffler Men. 4PM on the day the Queen's birthday and they got the job done a treat :O

:)

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Maybe they'll look to do a bunch of presales to help inject some cash fast for their financial issues...
    • Does it also misfire equally when revving?   Josh is very correct in what you should do. The coilpack harness wiring loom itself is a known problem due to its age and the number of heat cycles it has gone through. Throwing parts at a vehicle to diagnose the issue isn't a smart or good way to do it. Secondly, you may have a bad coil pack, you pop replacements in, they fix that issue, but messing with the harness breaks it, so the issue persists. So now you think "well it wasn't the coil packs" and have to continue chasing your tail, potentially swapping back in your shit coil packs and returning the good ones (yes, I've seen people do this because 'it wasn't the problem' and they want to save money). And suddenly, you've got two issues with the same symptoms...   Diagnose, don't use the spare parts shotgun.
    • Well the articals keep saying a Q50s (Skyline in Japan) with a new Manual gearbox. I like the talk about the new looks with the round tail lights. I hope they bring back the retro look like they did with the Z
    • Off the back of feedback we have decided to mix up this next Motorkhana at Avalon to have some targeted skills practice for beginners to advanced. Saturday 6th September 2025 8:30am Capped 26 entries Standard Entry Fee: $89 Members Entry Fee: $55 (SAU Victoria Only) Entries Close: Friday 5th February  Where: 55 beach road Avalon. https://maps.app.goo.gl/HNUE3EuNue3sJxh38 Entries: Limited to 26 entrants (Passengers allowed over the age of 14 with a signed disclaimer and same safety gear) Disclaimer: Download  Please electronically sign and email to [email protected] or print and hand in and Driver Sign In. To compete in this event you will require A valid  AASA General Speed licence or (Day license via the AASA Website for $50) MA Licenses are no longer accepted by AASA https://aasa.com.au/  A helmet, long sleeve clothing and a 1KG mounted fire extinguisher recommended (But not Mandatory). Further details within Supp Regs on the enty link. Entry Link > https://www.sauvic.com.au/entry/deca/20250906 You can bring and have a passenger in the car but they need to comply to the same safety and clothing as driver. Bring your car and get to battle others, win, lose or draw. I can guarantee you will have lots of fun. Any questions email [email protected] Entry List:
    • Wanna rewrite all of that in, say, 2 or 3 separate sentences, so that we can read it?
×
×
  • Create New...