Single Turbo RX-7's Questions about all aspects of single turbo setups.

2 turbos

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Old Dec 9, 2005 | 08:43 AM
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2 turbos

Alright guys, so my problem is deciding between one of two turbos. My two choices are the garret gt35/40 or the afr61r =) I did my research and these two turbos seem to be within reason of what I want. Looking for decent hp, with minimal lag. Street driven and track used on weekends.
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Old Dec 9, 2005 | 09:27 AM
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Don't those two turbos differ significantly in price?


-Ted
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Old Dec 9, 2005 | 09:33 AM
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I've seen both of these turbos side by side on the dyno. Same tuner, the af61 outperformed the gt35r hands down. A lot of people are going to come on here and say gt35r. I can gurantee you that none of them have seen, ridden in, or driven an af61 car. Everyone who has purchased one and gotten it running have been MORE than satisfied with their turbo. Cars are seeing 415-430@ 15 psi and hitting 15psi around 3500 with full exhaust systems. Not to mention the fully warrantied af61R is a little more than half the price of the gt35r.
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Old Dec 9, 2005 | 09:34 AM
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Originally Posted by RETed
Don't those two turbos differ significantly in price?


-Ted
Be sure to post your opinions on a turbo that you've never had in front of you Teddy.
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Old Dec 9, 2005 | 09:42 AM
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Originally Posted by sysiphus
Be sure to post your opinions on a turbo that you've never had in front of you Teddy.
hahaha, damn, you're funny today.

I've had a GT35R in hand, helped a customer build the car, and then tune it.

Damn, and I thought you could read my mind.

That's alright dude, I've read your bullshit replies.
I'm grinning ear to ear right now cause one day you're going to run into the wrong person that's going to kick your *** like you'd never believe...

Have fun with the rest of your life.


-Ted
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Old Dec 9, 2005 | 09:51 AM
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Originally Posted by RETed
hahaha, damn, you're funny today.

I've had a GT35R in hand, helped a customer build the car, and then tune it.




-Ted
What? No opinions on the AF61R? Maybe you should search really quick so you can empty oyu stomach contents all over the internet.
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Old Dec 9, 2005 | 10:07 AM
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I dont think the GT35R and the "AF61" are even in the same ballpark in terms of compressor wheels, ball bearing and non ball bearing, etc.... If im not mistaken the AF61 is a much bigger turbo. your best bet is to search and call the places that sell both turbos to see if it fits the type of driving you plan on doing.
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Old Dec 9, 2005 | 11:48 AM
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lol, yeah I know they differ in size, but I wanted opinions from people driving/that have ridden/worked on cars with both. The gt35/40 I can get in a kit, with the af61 I'd need to have someone fab everything up. So I'm weighing my options. Drop 4k on the gt35/40 kit, or 1k for the af61 and get the req. accesories, wastegate, BOV, and either way I'd have to upgrade to a fmic. Either way, this will be taking place between next year, or the year after (spring/summers). So, I'm not in such a rush.
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Old Dec 9, 2005 | 12:36 PM
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If you go with an hks cast and find a good price on a wastegate or use an ebay one, you can have an af61 kit together for around $1500. Just cut your existing 3 inch downpipe up and weld ona few inches of piping and a v'band to fit.
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Old Dec 9, 2005 | 04:22 PM
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^who the **** is this guy and why do I have to read so much bullshit between him and RETed in this section??

ok, better question what use to be your forum name?
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Old Dec 9, 2005 | 04:28 PM
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Originally Posted by dubulup
^who the **** is this guy and why do I have to read so much bullshit between him and RETed in this section??

ok, better question what use to be your forum name?
Dude, thats Asmir from Hurricane Divine Racing.
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Old Dec 9, 2005 | 05:39 PM
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Originally Posted by dubulup
^who the **** is this guy and why do I have to read so much bullshit between him and RETed in this section??

ok, better question what use to be your forum name?
He's the same idiot that posts this clever material.

Originally Posted by sysiphus
I know a forum member who ***** *******.
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Old Dec 9, 2005 | 06:09 PM
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Originally Posted by Kevin T. Wyum
He's the same idiot that posts this clever material.
He can't help it, he's down syndrome.
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Old Dec 9, 2005 | 07:00 PM
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Originally Posted by Kevin T. Wyum
He's the same idiot that posts this clever material.

that was some really rude ****, Down syndrome (joke Lupe?) regardless mommy and daddy need to take away his computer privledges.

kenn

edit: not you KT I was refering to the quote you listed but it didn't carry over for some reason.

kenn
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Old Dec 9, 2005 | 09:07 PM
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Originally Posted by Poweraxel
I dont think the GT35R and the "AF61" are even in the same ballpark in terms of compressor wheels, ball bearing and non ball bearing, etc.... If im not mistaken the AF61 is a much bigger turbo. your best bet is to search and call the places that sell both turbos to see if it fits the type of driving you plan on doing.

it might be better to compare the af61 to the gt37. basically the same compressor as the 35r, but with a p-trim exhaust and standard t4 snail. price is $800ish, compared to $1400ish for the 35r.
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Old Dec 10, 2005 | 08:20 AM
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I think the turbos lend themselves to comparison. Both spool 15psi around 3500, the af61 just makes a lot more power than a gt35r. Who cares about physical size. All that means is that the huge af61 comp cover looks great in your engine bay.
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Old Dec 10, 2005 | 11:56 AM
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yea man, buy it because it looks good.

let's not forget what's important.
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Old Dec 10, 2005 | 12:56 PM
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Ok, I feel that this thread is going no where so I will try to direct it onto the right path.

I was in the same situation about 4 months ago. I was looking at a few different turbos and both of these were on my list. No not because they were the same size but because they performed similarly.

I was not able to ride in any vehicle that had these turbos. And I was not able to hold one in my hands previous to buying. I had to gather all my information from stats(not always believable) and from personal feel of the car.

GT35/40:
pros:
Very reliable seller- Aspec
Manifolds guaranteed for life
good spool
cons:
cost
common setup…I like to be different

AF61:
pros:
cost
2 year guarantee
quick spool
"torquier feel"

cons:
uncharted land...well in comparison to the gt35/40
no compressor map available...closest was the Schweitzer turbo
at 18psi supposedly 82% efficiency

Both turbos, hp wise created the range that I was looking for. And IMO there specs were very similar. Who cares what it looks like? As long as you like the way it feels.

Here is why I chose the af61. Since this turbo is going to be a street turbo and I do not think that I will go over 18psi I did not see justification to purchase a turbo that was close to twice the cost. I personally do not care if the turbo “falls on it face” after 18 psi because I will not be boosting past that.

Also either way you go you can just buy the turbo and build the package.

Here are my costs so far:

AF61, v-band, oil line kit 900
HKS cast manifold, HKS 40mm wastegate, Greddy elbow, and Turbonetics raptor blowoff valve 750

so for 1650 I already had more than the kit. Granted all parts were previously purchased by another person but never used.

When it comes down to it there are people on this forum that is favoritism to “their choice” of turbo. Look at the specs and choose for yourself. In the end I think that you will be happy with either setup. Where do you want to take you business?

I hope this post helps.

Z
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Old Dec 10, 2005 | 01:19 PM
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Thanks, that's the kinda info I needed =) Useless jibber-jabber, however entertaining, isn't very helpful. Thanks again Z, I've been leaning towards the af61 for awhile now. Now, to start saving up
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Old Dec 10, 2005 | 03:35 PM
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So the af61 is significantly cheaper than the GT and you can't afford to buy that one, you need to start saving for it. It doesn't sound like the GT was ever a realistic option for you so what was the point to this psuedo debate?
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Old Dec 10, 2005 | 04:17 PM
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Good point Kevin. P4nc7, not sure what your current setup but there is a lot more than just slapping a turbo on your car. Are you turbo already? That might create a little less problems. You will need a new fuel system with a minimum of upgraded injectors, IC, EMS and a few other misc items. I am sure that if you search you will find the specific needs for you application. I am sure that you knew all this already though

Good luck, all the people that have installed this turbo have had a blast with it so far...well at least the ones that I have talked to.

Z
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Old Dec 10, 2005 | 09:13 PM
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Originally Posted by z-beater
HKS 40mm wastegate,
The 40 is too small.


-Ted
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Old Dec 11, 2005 | 12:24 PM
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Lol, don't worry, I know what to get/put on, It's not like I have money hanging out of my ***, even if I did, mods would have to wait until spring. =) Plus, to buy anything dont you have to save up? Not like you're going to put 100% of any paycheck towards buying parts. What about bills, food, and other such things? Anyways, thanks for the help guys, looks like I'll be going for the af61, the saving begins! Now, if I counted correctly I should have enough money to buy everything I need by end of next summer. (only 2 grand in bank right now =()
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Old Dec 11, 2005 | 08:55 PM
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REted I was just wondering if you are still saying the Apexi AX75f82 is not ball bearing. As I remember you ensuring everybody that it is not a bb turbo in previous threads and now everyone can go to the Apexi usa site and read in plain english that it is. So I have to agree from time to time REted will post a write up on a turbo that he knows absolutly nothing about.
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Old Dec 12, 2005 | 03:52 AM
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Originally Posted by p4nc7
Lol, don't worry, I know what to get/put on, It's not like I have money hanging out of my ***, even if I did, mods would have to wait until spring. =) Plus, to buy anything dont you have to save up? Not like you're going to put 100% of any paycheck towards buying parts. What about bills, food, and other such things? Anyways, thanks for the help guys, looks like I'll be going for the af61, the saving begins! Now, if I counted correctly I should have enough money to buy everything I need by end of next summer. (only 2 grand in bank right now =()
Some will tell you to go with the SSAutoCrap wastegate which is priced economically...


-Ted
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