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Another DIY Twin Turbo kit (COMP oil-less turbos)

Looking forward to this build...I think I know exactly how this will be plumbed (I have done the same on a VQ35DE a long time ago). The only thing I

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Old 11-19-2014, 10:22 AM   #16 (permalink)
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Looking forward to this build...I think I know exactly how this will be plumbed (I have done the same on a VQ35DE a long time ago).

The only thing I would do differently is the selection of the turbine housings. You will find that the .64 T25's have a very low flow limit. They will be efficient (EBP less than 2:1) up to 500whp, but after that they will become a bit of a restriction.

I also talked to the guys at COMP at SEMA a couple of weeks ago about the greasing of these turbos. And like Rusty, I had the same questions, where does the grease go. I thought that 3-4 pumps of grease is actually a lot for such a small centre section. If I was to guess, I would have thought 1-2 pump worth of grease per oil change would have been sufficient.
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Old 11-19-2014, 06:35 PM   #17 (permalink)
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Look forward to seeing results of another homebrew kit.
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Old 11-19-2014, 06:42 PM   #18 (permalink)
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Quote:
Originally Posted by thangcu35 View Post
this is my 2nd time welding aluminum but I made sure the welds are leak proof.

They look pretty good to me for only being your second time. Nice job
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Old 11-19-2014, 07:29 PM   #19 (permalink)
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Thanks! I'm working on a steady hand for more consistent beads.

Nothing too crazy today, got some time to test fit the intercooler and plumbing. I'm going to bring out the front crash bar by 1/4" using aluminum spacers to give the IC some more room to play with. Currently the 3.5" core barely fits in between the crash bar and radiator support. I'm thinking of mounting the IC with the bolt holes circled in red. It's too bad that I have to do my work outside since the one car garage is currently occupied by the welder and tools. Winter is going to kick my *** real soon.



I'm still thinking of where to relocate the powersteering cooler to.
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Old 11-22-2014, 01:24 PM   #20 (permalink)
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It's a good day out so I've gotten more progress. Figured out how to relocate the OEM powersteering cooler without making any major mod. I simply switched the OEM brackets around and that allows me to place the cooler inside toward the AC condenser out of the way of the IC. Extended the lines with 3/8 hose and refilled powersteering with DEX VII ATF.






I also got the IC brackets welded on.




Got all the post-IC pipings sorted out. Still need to weld on MAF adapter and BOV flange.




Test fit front bumper



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Old 11-22-2014, 02:12 PM   #21 (permalink)
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Where you putting the oil cooler at?
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Old 11-22-2014, 04:12 PM   #22 (permalink)
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If i decide on adding one, ill put it behind the right IC. Do i need one if the car is not going to be tracked?
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Old 11-22-2014, 04:26 PM   #23 (permalink)
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Yea you do. With the heat from the extra power, and where you live. A 34 row unit.
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Old 11-23-2014, 05:05 PM   #24 (permalink)
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Sub'D for everything!!!
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Old 11-23-2014, 05:14 PM   #25 (permalink)
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Oil cooler is a must!
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Old 11-24-2014, 01:18 PM   #26 (permalink)
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Quote:
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Oil cooler is a must!
I'm only supercharged
But is "A MUST"
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Old 11-24-2014, 04:14 PM   #27 (permalink)
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Old 11-24-2014, 04:48 PM   #28 (permalink)
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I'll jump on the cooler bandwagon. I can spike oil temps 30deg just with a few good boosted pulls on the freeway. That's with an oil pan spacer and 30 row cooler. Temps max out around 210-215degC so no high heat issues but I can only imagine the temps I'd see without the cooler and 8.5qrts of oil cycling.
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Old 11-24-2014, 05:07 PM   #29 (permalink)
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well he may have a slight difference in oil temps due to not having oil circulated through his turbos. but yeah the car still needs at least a small cooler.

Edit: Except mine I need to remove my cooler. Dry sump + 12.5qts
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Old 11-24-2014, 05:50 PM   #30 (permalink)
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^ what kinda kit you running?
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