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Old 10-11-2005, 05:24 PM   #1
SSFWRX
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Default 3" Perrin Turbo Inlet w/ FP Green 3" Inlet

Well I have been sitting here staring at my DB SZ49 and FP Green w/3" inlet. Yesterday came my new Perrin inlet for the Green, and it was time to compare and take some pictures while Im waiting on some other parts. It becomes obvious just how big a difference their really is once set side by side.


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Old 10-11-2005, 05:27 PM   #2
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Yes there is a difference on paper...but I doubt you will feel any difference in power though. PITA to install too.


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Old 10-11-2005, 05:28 PM   #3
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damn... lucky enough to have both those turbos though!

it's no question as to why it's a bitch to fit in there!
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Old 10-11-2005, 05:37 PM   #4
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I most certainly will feel a difference. The SZ49 has a 5 degree clip which hurts spool and power under the curve on my JDM 2.0 When I looked back at my previous FP Green I made more power and torque down low, and a much smoother curve. The SZ49 on my car misses the motors peak VE resulting in late spool and probably lower power.

Now onto the turbo inlet and 3" opening. I have a distinct feeling that there will be quite a bit of difference from a 2.4". Yes it does taper at the turbo, however the volume of air in there should help in the smallest bit as a plenum, and the taper at the turbo should draw a little more air in at a higher rate of speed.

Mike at Gruppe-s has noted improved throttle response from the 3" on the dyno. And thats hard to do on the nasty Mustang rollers they have.
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Old 10-11-2005, 11:46 PM   #5
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Do the TGV sensors need to removed to fit the 3" inlet, since the small inlet tube curves around them???
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Old 10-11-2005, 11:58 PM   #6
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on a USDM motor it is said that they can be damaged if installed with a turbo that requires a 3" inlet hose becuase of the size of the housing. On my JDM motor I have no worries. I think removal is key, but that can require some workarounds.
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Old 10-12-2005, 12:38 AM   #7
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nice turbos
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Old 10-12-2005, 01:57 AM   #8
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The Turbo inlet hoses arent that bad to install. Just a little patience and maybe a few bad words and she is in.

I am sure that it will make a difference with the green !
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Old 10-12-2005, 10:38 AM   #9
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Quote:
Originally Posted by Chris Cuevas
The Turbo inlet hoses arent that bad to install. Just a little patience and maybe a few bad words and she is in.

I am sure that it will make a difference with the green !
Big tube small area, and u had a say a few bad words to get it in? Sounds like the first time getting a piece of a$$
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Old 10-12-2005, 11:47 AM   #10
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Quote:
Originally Posted by SSFWRX
I most certainly will feel a difference. The SZ49 has a 5 degree clip which hurts spool and power under the curve on my JDM 2.0 When I looked back at my previous FP Green I made more power and torque down low, and a much smoother curve. The SZ49 on my car misses the motors peak VE resulting in late spool and probably lower power.

Now onto the turbo inlet and 3" opening. I have a distinct feeling that there will be quite a bit of difference from a 2.4". Yes it does taper at the turbo, however the volume of air in there should help in the smallest bit as a plenum, and the taper at the turbo should draw a little more air in at a higher rate of speed.

Mike at Gruppe-s has noted improved throttle response from the 3" on the dyno. And thats hard to do on the nasty Mustang rollers they have.

You think the clip is really hurting your power? I remember Clark saying that w/ a 12 degree clip on the Green they picked of like 40 whp in the midrange, due to the excessive backpressure on that turbo. Think he said it was like 3:1! Anywho, just curious.
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Old 10-12-2005, 06:11 PM   #11
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Quote:
Originally Posted by pux888
You think the clip is really hurting your power? I remember Clark saying that w/ a 12 degree clip on the Green they picked of like 40 whp in the midrange, due to the excessive backpressure on that turbo. Think he said it was like 3:1! Anywho, just curious.
That may be on a 2.5L. On my 2.0 when I compare the Green to SZ49 plots everything is shifter 4-500 RPM to the right. This is proof in the pudding. Jerry at DB even says approx a 400RPM later spool becuase of the clip. A clip is great once the turbo is spooled...my problem is getting it spooled.
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Old 10-12-2005, 10:55 PM   #12
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so is the green with the 3 inch inlet just a bigger inlet, or the compressor housing bigger. does it use the red compressor?
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Old 10-13-2005, 12:30 AM   #13
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3" inlet using the FP Red compressor housing as far as I can tell.
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Old 10-13-2005, 06:41 AM   #14
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The Red's compressor housing is different cuz it has a bigger inducer. It most likely has the housing off of the Green for a DSM.
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Old 11-23-2006, 06:48 PM   #15
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Maybe some one can help me here...

What size would fit the 8CM FP 18g? The 3" inlet or the 2.4" ?.



Last edited by subenerd; 11-23-2006 at 08:17 PM.
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Old 11-23-2006, 07:33 PM   #16
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It should be the standard 2.4" (not 2 1/4", BTW) inlet, unless stated otherwise. It didn't say anything on FP's website about the 7cm or 8cm using a 3" inlet, so I'd say 2.4".
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