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Small turbo parts question

Old 04-Sep-2003, 10:01 AM
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Small turbo parts question

Mr.Civic is selling a Garrett 25 Turbo on classified, but it does not have a header. Then I saw this on Ebay and I was wondering if this will bolt on to the motor?

Would I still need some kind of adaptor plate between the header and engine? And how do you get rid of the rust on the header?

I am thinking a small turbo on the D block. Or I might wait and turbo another engine once I get the swap. But if the parts are cheap, I think I should take this opportunity and practice it. Thanks all.
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Old 04-Sep-2003, 10:17 AM
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T25 is a REALLY small turbo. HF manifold should bolt to your block, but will likely NOT bolt right to the turbo, you'll need an adapter flange made.
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Old 04-Sep-2003, 12:12 PM
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So basically, garages can make these parts right?
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Old 04-Sep-2003, 12:14 PM
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a machine shop can make this part for you, but don't forget that you'll need gaskets too... high temp ones
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Old 04-Sep-2003, 01:37 PM
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Ok, flange is the little piece that goes in between turbo and the piping. Gasket is what goes between the engine and the header right?
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Old 04-Sep-2003, 01:41 PM
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there ought to be a gasket at every joint...

flange is a peice that connects basically two things that ought not to be together otherwise ... that would be the non-pipe part of the header for example
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Old 04-Sep-2003, 03:17 PM
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http://www.homemadeturbo.com/

look in the classifieds there. you will see a post for a company that makes the adaptor plates pretty cheap.
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Old 04-Sep-2003, 03:46 PM
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they've made some sick turbo'd d series on that site
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Old 04-Sep-2003, 04:51 PM
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I would grab the HF mani.

You'll need a flange made according to the bolt pattern on the turbo.

Use Header wrap if your worried about the surface rust....plus i heard it'll up performance.....for 70 bux you can't go wrong.
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Old 04-Sep-2003, 05:37 PM
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What' is an HF Manifold?
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Old 04-Sep-2003, 07:35 PM
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Exhaust manifold found on 88-91 CRX HF.

If you take a look at the HF manifold on Ebay and compare it to normal stock manifolds, our stock ones where the 4 runners joins into 1 and extends mid way down. If you look at the the HF manifold where the 4 runners collects it doesn't extend any further. Which allows room for adding a turbo. That opening you see in the second pic with the 4 bolts you'll need to fabricate a flange to reflect the bolt pattern on your turbo. T25/T3/T4/IHI whatever pattern. Then you need to fabricate the downpipe to cover the rest of the area missing from turbo to exhaust.

Great thing about the HF manifold is because its cast iron, has a hole for the O2 sensor (no sensor relocation here)....less to no chance of cracking as opposed to a welded log style manifold or even a full race mani.....if you know a really good welder and his skills are the ****, more power to you.

To stress what BB stated about gaskets.....you don't want an exhaust leak. Good to do it right the first time around and cover all possible issues than trying to figure out wtf is wrong later on when your guage reads nothing...or suddenly hear weird noises.
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Old 04-Sep-2003, 09:07 PM
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Cool, I must be a dumbass to even ask what an HF manifold is... I was bidding on one LOL.

Aight, nice info guys, thanks. I suppose I can pick up an HF manifold from junkyards should I fail to bid on that one.

I think I know what a flange is by the decription. Cause the turbo won't bolt on to the manifold so you make a thick plate that has 4 holes which bolt on to the manifold, and another 4 holes that the turbo attaches itself to right? So a plate that has 8 holes on it, am I correct?
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Old 04-Sep-2003, 10:11 PM
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Oh, another thing, what is "Shaft Play"?

I was doing some search on Ebay but not sure what would be the ideal turbo for a small 4 cylinder?
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Old 04-Sep-2003, 10:15 PM
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you want something that spools quickly .... reaching max boost like at 2500 is great... small will do that but big is what produces the large boost so it's a trade off the key is to look at volumetic efficiency and the gearing in the turbo.....
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Old 05-Sep-2003, 08:32 AM
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Originally posted by Nova_Dust
Cool, I must be a dumbass to even ask what an HF manifold is... I was bidding on one LOL.

Aight, nice info guys, thanks. I suppose I can pick up an HF manifold from junkyards should I fail to bid on that one.

I think I know what a flange is by the decription. Cause the turbo won't bolt on to the manifold so you make a thick plate that has 4 holes which bolt on to the manifold, and another 4 holes that the turbo attaches itself to right? So a plate that has 8 holes on it, am I correct?
yes, that is correct

shaft play is how fuct the turbo main bearing is... ie. the two sides of the turbo (exhaust and intake) are connected by a shaft... and it this shaft can move side to side.... the turbo is fuct. you don't want blades contacting the housing when they are spinning at 100,000 rpm... and YES they do sometimes spin that fast wheeeee!
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Old 05-Sep-2003, 09:54 AM
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I see.

So T25 is a small turbo, are there other small turbo out there? Is T28 a small one? IHI? Greddy?

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Old 05-Sep-2003, 10:41 AM
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Most turbos are pretty small. Why you buying junk for your almost new Civic anyways. Stay away from ****... buy a complete kit, and then upgrade to a decent fuel management system and you'll lay down good power. Start with a Greddy or Apexi kit... spend the $3-5K on a decent turbo unless you know what you are doing.

Mine has already cost me towards the $2K range, and it's still missing some small bits, but it'll be nicer than any kit out there... difference is I can afford to make a mistake and blow my motor, but you most likely cannot. So start with a kit! <--- best advice today
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Old 05-Sep-2003, 11:09 AM
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I see. Point taken.

Thanks B
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Old 05-Sep-2003, 11:57 AM
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always remember this - except correct it for proper english

"Can't nothing good come out of cheap parts"

translated into english:

"Nothing good can come from cheap parts"
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Old 05-Sep-2003, 10:17 PM
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Originally posted by bbarbulo
always remember this - except correct it for proper english

"Can't nothing good come out of cheap parts"

translated into english:

"Nothing good can come from cheap parts"
depends if you know the rigth people that know how to do all this stuff then thats good but if you **** around and try to do **** on your own and you dont know then your motor is fucked but anyways ill be grabbing a turbo too not the whole kit but the same thing nova star was talkign about and im gonna let my buddy do it he works at a performance shop in woodbridge
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