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Author Topic: big turbo 1.8t tuning  (Read 29772 times)
cgramme
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« Reply #45 on: December 08, 2017, 02:20:12 AM »

1.8t high torque at low rpm = f'd rods. My engine was running great when I started the new turbo install, but I'm going to wait to drive it until I find the problem. This sucks, but at least I found it before i pushed it to hard. It'll all buff out in the end.
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Carsinc
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« Reply #46 on: December 08, 2017, 03:55:07 PM »

what problem?
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_nameless
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« Reply #47 on: December 08, 2017, 04:41:05 PM »

1.8t high torque at low rpm = f'd rods. My engine was running great when I started the new turbo install, but I'm going to wait to drive it until I find the problem. This sucks, but at least I found it before i pushed it to hard. It'll all buff out in the end.
pull the oil pan and check the pickup if you havent already. if the oil pump chain tensioner pad is fine send it
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Giving your mom a tuneup
cgramme
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« Reply #48 on: December 08, 2017, 05:49:57 PM »

pull the oil pan and check the pickup if you havent already. if the oil pump chain tensioner pad is fine send it

Yeah, there's really no way around not dropping the oil pan. From what I've seen it's pain to do though, and I'll probably need to change the oil pump chain tensioner anyway. I inspected more of the pieces from the oil and so far I have found a soft rubber seal like material, hard black plastic with smooth inside curved edge, and a tan-ish hard plastic material with a smaller curved inside radius.

Update on turbo install:
Made oil drain line, fitted new turbo-intercooler pipe, air intake is complete, made new wastegate flange for new location under turbo, and exhaust is spot welded in place. I just need to plug the coolant lines and make a new heat shield/air box along with finish up the welding.
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Carsinc
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« Reply #49 on: December 09, 2017, 01:40:52 PM »

pan is easy, and the parts are what i said they are.
motor mount brackets, front subframe bolts pry subframe down never loosen rear bolts.
pan slides right out, dont have to take the front off nothing.
Enough with excuses just do it.
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cgramme
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« Reply #50 on: December 09, 2017, 04:44:14 PM »

pan is easy, and the parts are what i said they are.
motor mount brackets, front subframe bolts pry subframe down never loosen rear bolts.
pan slides right out, dont have to take the front off nothing.
Enough with excuses just do it.

It'll happen... Just doing one job at a time. Did you have to raise the engine to get the clearance from the subframe? From what I've heard it's a 10+ hour job.
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Carsinc
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« Reply #51 on: December 10, 2017, 08:57:27 PM »

Pulling the pan is easy don’t believe the hype.
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cgramme
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« Reply #52 on: December 12, 2017, 01:29:08 AM »

Had to weld in another flex pipe section due to an exhaust leak, but all the exhaust is completed now. The air intake is pretty much done, I just need to weld in a 1" fitting for the diverter and make a very well insulated heat sheild/box. I thought the stock oil feed adapter would fit the new turbo, but the threads are to wide. Just ordered a m12x1.25 - m14x1.5 adapter (hopefully it fits).


« Last Edit: December 12, 2017, 11:38:18 PM by cgramme » Logged
cgramme
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« Reply #53 on: December 12, 2017, 11:52:56 PM »

Custom airbox and turbo blanket on its way.
« Last Edit: January 27, 2018, 10:17:10 PM by cgramme » Logged
cgramme
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« Reply #54 on: January 25, 2018, 04:40:54 PM »

Time for an update......... I have finally completed the new turbo install. So far I've gone on two small test drives to check if everything is working correctly, and see if there are any leaks. The car feels super laggy but at around 4k rpm it starts boosting and pulling nicely. I let off the gas when it reaches around 1.1 bar but it feels good. Everything seems to check out, so now I'm going to start the tuning process. I'll be tuning as explained in the thread http://nefariousmotorsports.com/forum/index.php?topic=12352.0title=. I'm having trouble finding an xdf that includes KFLDRAPP so I can compare with for my 8E0909518AK 1.8t bin file. I'm still a newb at finding definitions... Anyway, until I can tune it with the nice KFLDRL GUI tool I'll just try and tune KFLDRL manually. Here are some pics of the install, and some of the first file I'm going to flash. I'm very open to educated suggestions regarding tuning.

Completed install:


Midpoint:


Here are are some tuning maps I'll start with. I have additionally set KFLDHBN to 2 across the map, which I believe should regulate max boost pressure to 14.5psi.


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