MKTurbo Sale Thread
#582
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I'll I did was regulate the air and used a pvc with a brass nipple and used a vacuum line to pressurize the system. Basically the standard YouTube setup that people post. I then took soapy water and sprayed everything looking for leaks and this is the picture of it leaking on both sides.
#583
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There is a lot of talk about leaky compressor housings on all kinds of turbos including OEM units. Most people suggest a small bead of the right stuff or copper rtv. A few people suggest that Teflon tape or rtv on the bolts that pass through the housing will seal the bolts. I was thinking 2 small seals like the one between the block and the oil feed would seal those bolts and keep them from sticking out in the path of the air flow so much.
I think you make a good point about being hot or cold Lars, don't know if anyone has tested a warmed up one yet.
I think you make a good point about being hot or cold Lars, don't know if anyone has tested a warmed up one yet.
#584
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There is a lot of talk about leaky compressor housings on all kinds of turbos including OEM units. Most people suggest a small bead of the right stuff or copper rtv. A few people suggest that Teflon tape or rtv on the bolts that pass through the housing will seal the bolts. I was thinking 2 small seals like the one between the block and the oil feed would seal those bolts and keep them from sticking out in the path of the air flow so much.
I think you make a good point about being hot or cold Lars, don't know if anyone has tested a warmed up one yet.
I think you make a good point about being hot or cold Lars, don't know if anyone has tested a warmed up one yet.
#586
Well leakyness aside this weekend I went to the drags and was able to run a 13.6 @ 13psi with the system. There is still room for more. I have ported the **** out of the wastegate and still have the turbo wanting to creep up to 17psi in 5th gear. Anyone have any input or suggestions. The only way I have made a compromise to this is by running 13psi in2-3 and creeping to 15 in 4th in 5th. I really would like the same boost level at least in 2-5th
#588
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Well leakyness aside this weekend I went to the drags and was able to run a 13.6 @ 13psi with the system. There is still room for more. I have ported the **** out of the wastegate and still have the turbo wanting to creep up to 17psi in 5th gear. Anyone have any input or suggestions. The only way I have made a compromise to this is by running 13psi in2-3 and creeping to 15 in 4th in 5th. I really would like the same boost level at least in 2-5th
#589
I highly enlarged my wastegate hole, to the point where it's about 1/8-1/16 from catching on the lip of the flapper, against all advice to the contrary. To take it so wide I had to blend it into the sides of the turbine inlet, it's not wide enough for the diameter hole you need. Gotta be careful, I estimate I had to go to within 1/4-3/16" to the outside of the casting, it's not all that thick...
I don't ever blow it open, and can run low boost no sweat. Nitrodann would argue there's no need to delete the high rpm overboost, but if you want to I believe you need more volume, not more flow direction or anything.
Do these turbos have a o-ring on the compressor, I can't remember and I don't want to take it apart. I wonder if somewhere along the line something like this might have been left out?
I don't ever blow it open, and can run low boost no sweat. Nitrodann would argue there's no need to delete the high rpm overboost, but if you want to I believe you need more volume, not more flow direction or anything.
Do these turbos have a o-ring on the compressor, I can't remember and I don't want to take it apart. I wonder if somewhere along the line something like this might have been left out?
#590
I highly enlarged my wastegate hole, to the point where it's about 1/8-1/16 from catching on the lip of the flapper, against all advice to the contrary. To take it so wide I had to blend it into the sides of the turbine inlet, it's not wide enough for the diameter hole you need. Gotta be careful, I estimate I had to go to within 1/4-3/16" to the outside of the casting, it's not all that thick...
I don't ever blow it open, and can run low boost no sweat. Nitrodann would argue there's no need to delete the high rpm overboost, but if you want to I believe you need more volume, not more flow direction or anything.
Do these turbos have a o-ring on the compressor, I can't remember and I don't want to take it apart. I wonder if somewhere along the line something like this might have been left out?
I don't ever blow it open, and can run low boost no sweat. Nitrodann would argue there's no need to delete the high rpm overboost, but if you want to I believe you need more volume, not more flow direction or anything.
Do these turbos have a o-ring on the compressor, I can't remember and I don't want to take it apart. I wonder if somewhere along the line something like this might have been left out?
Checking other forums it seems to be a fairly common thing (but no numbers to back me up) with the EVO or DSM folks to see the boost leak at the compressor face mating surface. I don't think you could fit a thin o-ring without screwing up the compressor wheel clearances. If it's a big problem I'll try the copper RTV first.
#591
Here's a vid me running a video me running a viper
Last edited by ScottyP3821; 07-06-2015 at 11:55 PM.
#592
Well I guess since I'm the only one actually running this turbo setup literally I will share another snag I ran into today. I started getting this odd sound from the turbo that sounds like like a vacuum cleaner when spooling up. Sounds like those little vacuums you would use to back in the 90s to clean up small spills and such. I went and checked the turbo and it seams that there is a lot more shaft play. More than after the first 100mi and I have quite the urge that this turbo is on it way out. I really would like to avoid the turbo going out on me. Maybe Lars might send me another to beta test
#594
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Yeah that's with ebc. I literally can not port the turbo anymore or I will go through it. I have about the thickness of a nickel left. I also went back and polished it and hit it with 120grit. It's super smooth as well now I was afraid of cracks. Let's say hypothetically this turbo doesn't cut it for me. Any recomendations on what to replace it with? Do all Chinachargers or journal bearing turbos internally gated do this? Not to sound like a turbo snob but I've only had BB turbos in all my turbo cars
Here's a vid me running a video me running a viper YouTube
Here's a vid me running a video me running a viper YouTube
Video is private so it does not load.
Well I guess since I'm the only one actually running this turbo setup literally I will share another snag I ran into today. I started getting this odd sound from the turbo that sounds like like a vacuum cleaner when spooling up. Sounds like those little vacuums you would use to back in the 90s to clean up small spills and such. I went and checked the turbo and it seams that there is a lot more shaft play. More than after the first 100mi and I have quite the urge that this turbo is on it way out. I really would like to avoid the turbo going out on me. Maybe Lars might send me another to beta test
#595
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disconnect the wastegate actuator.
wire the wastegate open completely.
what's your max psi?
leak is ezpz 2min fix.
vacuum cleaner noise or whiney noise? turbos suck in air, like a vacuum cleaner...
here's what mine sounded like:
it was loud.
this is the noise you dont want:
wire the wastegate open completely.
what's your max psi?
leak is ezpz 2min fix.
vacuum cleaner noise or whiney noise? turbos suck in air, like a vacuum cleaner...
here's what mine sounded like:
it was loud.
this is the noise you dont want:
#600
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For the Super60 I was thinking a genuine garrett one. It is the original turbo that Braineack ran. Not sure if they are findable on ebay, or might have to do some junkyard searching. I would think you could bolt on the back end v-band adapter from the churbo to the garrett and it would fit.