MKturbo where's all the boost going?
06-24-2018, 01:48 AM
#1
Junior Member
Thread Starter
Join Date: Oct 2015
Location: alberta canada
Posts: 64
Total Cats: 5
MKturbo where's all the boost going?
I've recently got my complete mkturbo intercooler plus electronics kit in my vehicle. I performed all the basics to get it up and running good and in boost. I have EBC set up properly, brought it to get it dyno tuned. We went through the whole fuel load range on the dyno. Did a power run on wastegate pressure to confirm everything is functioning as it should. Then when it came time to turn up the boost and start making some more power the most we could get out of the system was approx 10.5lbs. 40% duty gave 10.5 60% duty have 10.5, 80% duty gave 10.5 and 100% duty on the EBC gave 10.5, confirmed this by watching the wastegate actuator it is holding shut the whole time no movement at all. These were all done back to back pulls and all made within 2hp/2tq of each other each time. Looking for suggestions as to what the experts think is going on. Is the turbosmart blow off valve a knock off one that comes with the kit and is leaking boost off, or is the intercooler just too restrictive causing that to be the max number it's capable of?
Reply
0
0
06-24-2018, 12:07 PM
#5
Junior Member
Thread Starter
Join Date: Oct 2015
Location: alberta canada
Posts: 64
Total Cats: 5
Originally Posted by nitrodann
melted cat or boost leak, assuming that the engine is working as it should.
Dann
Dann
Reply
0
0
06-27-2018, 02:13 AM
#7
Junior Member
Thread Starter
Join Date: Oct 2015
Location: alberta canada
Posts: 64
Total Cats: 5
Originally Posted by bahurd
Biggest thing I did with my MKTurbo was to put an oring in the compressor seal. It never came with one. After that, and sealing the WG bracket bolts where they go into the compressor it held 15psi no problem. IIRC, $5 for T3 oring on eBay.
Reply
0
0
06-27-2018, 08:02 AM
#8
There's also at least 2 of the bolts that hold the compressor on that extend into the compressor. I used teflon tape to seal the threads on those bolts. Don't over tighten them as they strip easy.
Reply
0
0
06-27-2018, 09:32 AM
#9
Junior Member
Thread Starter
Join Date: Oct 2015
Location: alberta canada
Posts: 64
Total Cats: 5
Originally Posted by bahurd
Sure, here you go: T3 Turbocharger Compressor Housing Gasket
There's also at least 2 of the bolts that hold the compressor on that extend into the compressor. I used teflon tape to seal the threads on those bolts. Don't over tighten them as they strip easy.
There's also at least 2 of the bolts that hold the compressor on that extend into the compressor. I used teflon tape to seal the threads on those bolts. Don't over tighten them as they strip easy.
Reply
0
0
06-28-2018, 08:35 PM
#10
Junior Member
Thread Starter
Join Date: Oct 2015
Location: alberta canada
Posts: 64
Total Cats: 5
photo328.jpg so I found out where all my boost is going, the flapper on the turbo does not line up with the wastegate hole one little bit. Also found a couple spots where boost is coming through some welds and the where the turbo compressor housing mates to chra.
photo497.jpgphoto198.jpgphoto265.jpg
Does anyone have any ideas on the wastegate for how to fix it?photo491.jpg it turns out that this shaft can slide up and down freely as it chooses (or as gravity pushes it down)
photo497.jpgphoto198.jpgphoto265.jpg
Does anyone have any ideas on the wastegate for how to fix it?photo491.jpg it turns out that this shaft can slide up and down freely as it chooses (or as gravity pushes it down)
Reply
0
0
06-28-2018, 09:56 PM
#11
Elite Member
iTrader: (5)
Join Date: Oct 2011
Location: Detroit (the part with no rules or laws)
Posts: 5,677
Total Cats: 800
Gotta love the boost leak tester.
Yeah, that arm should not slide up and down. I would assume there should be a C clip on it or something to retain it in place. Though i don't know exactly how these turbos work, i do know that's not right.
Yeah, that arm should not slide up and down. I would assume there should be a C clip on it or something to retain it in place. Though i don't know exactly how these turbos work, i do know that's not right.
Reply
0
0
06-28-2018, 09:58 PM
#12
Junior Member
Thread Starter
Join Date: Oct 2015
Location: alberta canada
Posts: 64
Total Cats: 5
Originally Posted by Erat
Gotta love the boost leak tester.
Yeah, that arm should not slide up and down. I would assume there should be a C clip on it or something to retain it in place. Though i don't know exactly how these turbos work, i do know that's not right.
Yeah, that arm should not slide up and down. I would assume there should be a C clip on it or something to retain it in place. Though i don't know exactly how these turbos work, i do know that's not right.
Reply
0
0
06-28-2018, 11:02 PM
#13
Junior Member
Thread Starter
Join Date: Oct 2015
Location: alberta canada
Posts: 64
Total Cats: 5
photo812.jpg
And problem solved, gently used a cut-off disc and made a groove then fouls and e-clip that fit around it nicely. need to re-assemble and will report back incase anyone else runs into the issue.
And problem solved, gently used a cut-off disc and made a groove then fouls and e-clip that fit around it nicely. need to re-assemble and will report back incase anyone else runs into the issue.
Reply
0
0
Thread
Thread Starter
Forum
Replies
Last Post
