Blackenedwings Franken-turbo install thread
01-03-2009, 10:50 PM
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Blackenedwings Satan's Hairdryer install thread
Alright, I lied when I said the car was almost done. I've realized that modding this car is an addiction and I'm quite a ways away from being finished. The next phase of the car takes this "mild mannered" street car a bit further. I'm still finishing up the tune with the current setup, but I expect I would hit 330 whp pretty easily with my current mods if I redynoed. I'm not going to right now though.
My next step on the car is threefold:
1) Cleanup. There are a lot of little things that need to be cleaned up and adjusted on the car to make it really nice. The tune needs to be finished up, the oil pan needs to be replaced, the air pump needs to be removed and the battery needs to be relocated. This isn't major and shouldn't take a lot of money, just some time to get everything looking nice inside and out.
2) Weight Loss. The car needs to go on a diet and lose some weight. I'm not sure how much weight loss is practical for a street car, and I'm not getting rid of all the amenities like AC/stereo. The first candidate is the heated leather seats being replaced with some racing bucket seats. I'm thinking either Bride or Sparco would be nice, but I need suggestions here, so feel free to post ideas/thoughts.
3) Built Motor. I just bought a new Renesis motor today from Rotary Innovations in TX which is being sent directly to BDC for a major build. The engine will be bridgeported, fitted with Esmeril Racing apex seals, have mild intake/exhaust porting, and dowel pinning. I'm relying on Brian from BDC for the steps on this motor, but I've heard a lot of positive feedback from people about his work, and he has been very professional (and FAST) in responding to me to make this happen. The new motor will also be accompanied by a new Black Halo Racing clutch and lightweight flywheel.
I'll add pictures of the ongoing work on the car going forward, and if there is something I've forgotten or suggestions about mods please let me know. I started out this project as a complete noob, and although I know more than I did when I started I'm still just doing my best to learn.
Last edited by blackenedwings; 10-29-2009 at 08:23 PM. Reason: Updates
01-03-2009, 11:33 PM
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Dondo: I'm in Columbia MD, between Baltimore/DC. I've been to a few gtgs with the Maryland crew.
Brettus: The GT2871R is similar to the GT3071R with similar flow, although a bit smaller and should spool slightly faster. There are a ton of comparisons out there between the two turbos and even Jeff has made several posts about it before he settled on the 3071 for his upgrade. For the hp target I'm aiming for it seems like a solid choice. I'll actually post some of the info about the turbo because I figure other people will be curious about it too.
01-04-2009, 12:03 AM
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Here is a link to a thread from about a year ago where Jeff answered some questions about the GT2871R as an upgrade for the GReddy turbo. He includes the compressor map comparing it to the "Disco Potato" hehe.
https://www.rx8club.com/showthread.p...ighlight=2871R
A good post with Jeff responding to a very rude post about the flow capability of the 2871R.
https://www.rx8club.com/showpost.php...4&postcount=23
Here is one where he announced his upgrade kit where he mentions he settled on the new turbo (3071R).
https://www.rx8club.com/showthread.p...ighlight=2871R
There are a million and one threads comparing the GT2871R vs. the GT3071R turbos with other cars/motors, especially the SR20 and SR26 motors. Not much concensus on which one is the better option, but it seems to be agreed that the 2871 is a bit less efficient with a bit less flow but it does spool more quickly. I've been assured by a bunch of people who know the car much better than me that it is a solid choice so I'm going to give it a shot. Originally I was going to be using the Devils Hairdryer as well, but MM had decided he wasn't going to sell it anymore due to taking a bath with two units shipped overseas. Now he is selling it again, but I already had the GT2871R.
edit: Also one key thing is that I'm shooting for lower hp targets than some of the guys with the Devil's Hairdryer, so I'm less concerned about room to grow and more concerned with low end response and lack of lag. From all reports the setup MM and mysql are using is pretty damn lag free, but with a 300-325 rwhp target I think the turbo I have will be a nice fit.
Last edited by blackenedwings; 01-04-2009 at 12:10 AM.
01-04-2009, 12:09 AM
#11
I don't think you can go wrong to be honest... unless you want to max the sucker out - for the 330-350 HP range; I would kinda bet they both feel the same - the rotary will spool that bad boy up in a blink though either way... so lag difference is probably negligable.
01-04-2009, 12:12 AM
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That's what I've been told by a few people who I trust. Right now I'm just fiending to get the snail under the hood. One thing I'm trying to decide is if I should put the Racing Beat midpipe on before I get the turbo in. I've never run a midpipe before so I don't know how deafening it's going to be NA without the turbo to soak up some of the volume. Any suggestions?
01-04-2009, 12:30 AM
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I guess I'm just curious how deafeningly loud it is NA, and if the turbo is really going to make that big a difference in shutting it up. Honestly I'm just so gd sick of having all these car parts sitting in my living room instead of being in my car, so I'm really tempted to put the midpipe in immediately just so it isn't leaning against my couch. If the sound isn't unbearable that would be my first choice.
01-04-2009, 01:18 AM
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01-04-2009, 02:24 AM
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My only concern is that the turbine on the 2871 is pretty small.
Faster spool is going to be mitigated with a significant amount of spiking and more pressure in the exhaust manifold.
You should look at the corrected turbine flow for both of those before you go to the trouble to install it. (That is the "other" flow map for the hot side that most people can't read.)
You can probably get a new turbine side from a 3071 and have it put together for you.
At the time when I was putting my project together, the 2871 was the "biggest" turbo of its frame.
The compressor side is essentially the same as the 3071r, so that side isn't going to be a problem.
You might want to see if the Garrett catalog lists, at least, a bigger A/R turbine housing. Maybe something over 1.0 or so.
Faster spool is going to be mitigated with a significant amount of spiking and more pressure in the exhaust manifold.
You should look at the corrected turbine flow for both of those before you go to the trouble to install it. (That is the "other" flow map for the hot side that most people can't read.)
You can probably get a new turbine side from a 3071 and have it put together for you.
At the time when I was putting my project together, the 2871 was the "biggest" turbo of its frame.
The compressor side is essentially the same as the 3071r, so that side isn't going to be a problem.
You might want to see if the Garrett catalog lists, at least, a bigger A/R turbine housing. Maybe something over 1.0 or so.
01-04-2009, 12:24 PM
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My only concern is that the turbine on the 2871 is pretty small.
Faster spool is going to be mitigated with a significant amount of spiking and more pressure in the exhaust manifold.
You should look at the corrected turbine flow for both of those before you go to the trouble to install it. (That is the "other" flow map for the hot side that most people can't read.)
You can probably get a new turbine side from a 3071 and have it put together for you.
At the time when I was putting my project together, the 2871 was the "biggest" turbo of its frame.
The compressor side is essentially the same as the 3071r, so that side isn't going to be a problem.
You might want to see if the Garrett catalog lists, at least, a bigger A/R turbine housing. Maybe something over 1.0 or so.
Faster spool is going to be mitigated with a significant amount of spiking and more pressure in the exhaust manifold.
You should look at the corrected turbine flow for both of those before you go to the trouble to install it. (That is the "other" flow map for the hot side that most people can't read.)
You can probably get a new turbine side from a 3071 and have it put together for you.
At the time when I was putting my project together, the 2871 was the "biggest" turbo of its frame.
The compressor side is essentially the same as the 3071r, so that side isn't going to be a problem.
You might want to see if the Garrett catalog lists, at least, a bigger A/R turbine housing. Maybe something over 1.0 or so.
01-04-2009, 01:00 PM
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Here is the Garret page for the exact model that I have:
http://www.turbobygarrett.com/turbob..._472560_15.htm
This shows the compressor map, which I do know how to read and the turbine map which uh... as you said, not so much. In fact, from what searching I've done online not too many people know how to read them at all. :P
http://www.turbobygarrett.com/turbob..._472560_15.htm
This shows the compressor map, which I do know how to read and the turbine map which uh... as you said, not so much. In fact, from what searching I've done online not too many people know how to read them at all. :P
01-04-2009, 02:05 PM
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you aint kidding... months back when i was trying to absorb some of the math and theory ni calculating flow i searched the web for 2 weeks trying to find a good explanation of how to read turbine maps to no avail...