AdamIan69 Bronze Donating Members 401 Member For: 10y 11m 29d Gender: Male Location: WA Posted 04/08/13 01:51 AM Share Posted 04/08/13 01:51 AM (edited) When I did mine, I put a 36mm valve in there. But I did find the standard hole could be made bigger even with the standard valve as there is a lot of sealing surface(maybe that's enough for the standard compressor). I found my 36mm valve would stick open every now and then, but operating the waste gate a few times while its out of the car can test this. I then removed steel out if the turbine housing until it didn't get stuck anymore. Now shes all sweet. Excellent effort putting this thread together mate. Edited 04/08/13 01:55 AM by AdamIan69 Link to comment Share on other sites More sharing options...
ratter Member 6,793 Member For: 17y 10m 23d Gender: Male Location: @ my laptop Posted 04/08/13 02:28 AM Share Posted 04/08/13 02:28 AM It works fine...boost is lower now up top.Just realised who you are, don't you run a 3" exhaust?if so the turbo port is not going to be as vital as when running a big exhaust, if you think it work well let us know the exact details, what size actuator and what boost at what duty cycle at 4000 and 4500 rpm, that will show how well it works, not trying to be smart but without that info anybody could claim anything Link to comment Share on other sites More sharing options...
Skids4kids in the mid....not the bum like some Member 609 Member For: 10y 11m 27d Gender: Male Posted 04/08/13 02:40 AM Share Posted 04/08/13 02:40 AM Ok I will go into a little more detail to ensure this will not be over boosting on me at any rpm.Last week before the drags I had my turbo apart due to a snapped banjo bolt in cartridge....use steel only not aluminium lol.Whilst apart I had the rear housing sitting with my other 3 and long story short a different stock port housing was fitted and created over boost issues in the midrange...it seems there is a quality control issue with stock port sizes as the one that was fitted before had very good boost control at stock port size at any rpm...could run 10psi flat with it if I wanted:)Basically what I have done is enlarge the factory FG port another 1.5mm and used the factory flapper still on the original and up to the task stock flapper and port which has taken 2psi out of the midrange/up top thus far so confident it will be ok....even better than before.Yes I still retain a small exhaust as the torque benefits for me outweigh the extra few kilowatts up top...plus it has zero drone at any speed/incline/rpm:) Link to comment Share on other sites More sharing options...
ratter Member 6,793 Member For: 17y 10m 23d Gender: Male Location: @ my laptop Posted 04/08/13 02:45 AM Share Posted 04/08/13 02:45 AM we have not noticed in real difference in the stock housing performance but know that if the orientation of the housing is slightly different is can add or reduce the actuator preload which will affect a car if tuned in open loop, what size actuator is now fitted and what boost does it run in the mid and at what duty cycle. 1 Link to comment Share on other sites More sharing options...
Skids4kids in the mid....not the bum like some Member 609 Member For: 10y 11m 27d Gender: Male Posted 04/08/13 09:40 AM Share Posted 04/08/13 09:40 AM It has a 8psi actuator on the housing like previous tunes and boost is now 12'ish psi instead of 15psi in the peak midrange rpm but my tune was literally a linear boost curve slowly rising so never really held a certain psi in the mid.Only way to get 18psi peak was to run 12psi down low and not rising straight away either....normally a 18psi at 5000rpm tune will see 20psi down low/mid for me as I prefer the boost higher down low and ramped in hard for drag racing.It wasn't a ideal tune for my application so to speak but it still got me my goal and he could only tune with hardware provided obviously:)Not sure on duty cycle ratter. Link to comment Share on other sites More sharing options...
ratter Member 6,793 Member For: 17y 10m 23d Gender: Male Location: @ my laptop Posted 04/08/13 10:37 AM Share Posted 04/08/13 10:37 AM well the main thing is it is working for you for what you want Link to comment Share on other sites More sharing options...
Headsex Donating Members 2,528 Member For: 18y 8m 8d Gender: Male Location: Melb Posted 13/08/13 02:55 AM Share Posted 13/08/13 02:55 AM Taking port and polishing to a new level... Cant say I've seen anyone "Polish" the exhaust housing ... lol Link to comment Share on other sites More sharing options...
shaunjennifer21 Member 95 Member For: 12y 9m 17d Posted 18/01/14 04:13 AM Share Posted 18/01/14 04:13 AM just brought one of these and I not sure if its been done or not can anyone tell me what the original hole size is and what it should be ported out to?? thanks Link to comment Share on other sites More sharing options...
jas98 Member 1,029 Member For: 11y 8m 27d Gender: Male Location: Maryborough Qld Posted 18/01/14 05:14 AM Share Posted 18/01/14 05:14 AM When I did mine, I put a 36mm valve in there. But I did find the standard hole could be made bigger even with the standard valve as there is a lot of sealing surface(maybe that's enough for the standard compressor). I found my 36mm valve would stick open every now and then, but operating the waste gate a few times while its out of the car can test this. I then removed steel out if the turbine housing until it didn't get stuck anymore. Now shes all sweet.Excellent effort putting this thread together mate.on my stoc turrbo and houseing (besides 8 psi actuator)when I had it apart for aengin mount swap I noted that the flapper gets caught on the houseing when opening and closeing.......now I want toremove turbo again for other reasons so while its off should icarefully use a dremal and clean up the burrs untill it does not get caught? cars running fine just wanna make sure Link to comment Share on other sites More sharing options...
AdamIan69 Bronze Donating Members 401 Member For: 10y 11m 29d Gender: Male Location: WA Posted 19/01/14 11:44 AM Share Posted 19/01/14 11:44 AM (edited) Yes you could, but pointless if the car is running fine IMO. If you were going to do what you say I would go buy a 38mm or 40mm valve and do the whole job. It is piece if puss with the right tools. ie electric die grinder and carbide bur. Edited 19/01/14 11:45 AM by AdamIan69 Link to comment Share on other sites More sharing options...
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