turbo questions - exhaust housing bolt pattern and divided setups - TriStateTuners.com :: Home of Tristate Auto Enthusiast

igo4bmx · 10-12-2009, 10:34 AM

I have a manifold and downpipe setup with a t3 flanged 50 trim turbo. the exhaust housing is 5 bolt but the downpipe is 4 bolt. Can I bolt up a 4 bolt downpipe to this turbo? my idea is to drill and tap for a 4th bolt since it looks as if from the naked eye, three should bolt right up

Also can you buy a new exhaust manifold with a divided housing and mate it up to a non divided turbo? will you see benefits of the twin scroll or not?

jjm4life · 10-12-2009, 04:30 PM

apparently, im retarded

how about a good seal joke... or something

deb38 · 11-02-2009, 05:02 PM

Quote:

Originally Posted by igo4bmx

I have a manifold and downpipe setup with a t3 flanged 50 trim turbo. the exhaust housing is 5 bolt but the downpipe is 4 bolt. Can I bolt up a 4 bolt downpipe to this turbo? my idea is to drill and tap for a 4th bolt since it looks as if from the naked eye, three should bolt right up

Also can you buy a new exhaust manifold with a divided housing and mate it up to a non divided turbo? will you see benefits of the twin scroll or not?

That would be a very ghetto setup.

What do you plan on doing for gaskets with regards to the downpipe/hotside flange? Your best bet would be having a new flange welded on to the downpipe.

The divided housing of a manifold is for a twinscroll setup. You would be running twin wastegates that create a certain pulse for the exhaust gasses. If you are running a non divided turbo (ie single scroll) you aren't going to see any gains. And vice-versa. It is just going to cost you more money.

1000whpTSi · 11-08-2009, 10:30 AM

There are companies that make conversion flanges. Try www.Himniracing.com. They specialize in RX-7's but they sell all kinds of turbo flanges and adapters. Thats where I got the adapter for my GT42 compressor outlet flange adapter.

Nick 95 6sp · 11-08-2009, 01:59 PM

ATP also makes all sorts of adapters. Not sure if they make a 5 bolt to 4 bolt adapter, but here's a 5 bolt to V-band if you might consider welding a V-band on your downpipe

deb38's correct about the bastardized twin scroll ...a waste of money unless you maintain true twin scroll.

10-12-2009, 10:34 AM	#1
igo4bmx Tri-State Post Whore Join Date: Jun 2005 Location: Under the bar... Member #592 My Ride: 2009 Audi A3 Quattro, 2008 BMW X5, 2003 WW Evo8, 2000 Turbo SOHC Civic iTrader: (1)	turbo questions - exhaust housing bolt pattern and divided setups I have a manifold and downpipe setup with a t3 flanged 50 trim turbo. the exhaust housing is 5 bolt but the downpipe is 4 bolt. Can I bolt up a 4 bolt downpipe to this turbo? my idea is to drill and tap for a 4th bolt since it looks as if from the naked eye, three should bolt right up Also can you buy a new exhaust manifold with a divided housing and mate it up to a non divided turbo? will you see benefits of the twin scroll or not? __________________ BOOST doesn't get you laid. Roofies and some creativity does however Tuned by some white dude @ a shopwithbigtrucks.com "You get what you pay for" - thanks captain obvious, unless you bought rotas and received volks.

10-12-2009, 04:30 PM	#2
jjm4life Tri-State Post Whore Join Date: Apr 2007 Location: boston Member #4443 My Ride: jew canoe iTrader: (0)	apparently, im retarded how about a good seal joke... or something __________________ current: triumph, abarth gone:RS4 evo lotus(s) noble and a bunch of jeeps Last edited by jjm4life; 10-12-2009 at 04:39 PM.

11-08-2009, 10:30 AM	#4
1000whpTSi Tri-State Aficionado Join Date: Sep 2008 Location: NY Member #8766 My Ride: 1992 Eagle Talon TSi AWD iTrader: (0)	There are companies that make conversion flanges. Try www.Himniracing.com. They specialize in RX-7's but they sell all kinds of turbo flanges and adapters. Thats where I got the adapter for my GT42 compressor outlet flange adapter. __________________ 92' Talon TSi-Drag car - GT4202 / Shearer top mount / Shep Dogbox / Haltech E11v2 / Weldon 2345-A / Hogan custom SMIM / Wilson Billit 90mm TB / J&S SAFEGAURD-Individual cylinder knock controll system / DSS Level 5 axles / DSS 3.5" HD Driveshaft /

11-08-2009, 01:59 PM	#5
Nick 95 6sp Tri-State Post Whore Join Date: Feb 2007 Location: Narberth, PA Member #3675 My Ride: '95 Supra Turbo 6sp iTrader: (0)	ATP also makes all sorts of adapters. Not sure if they make a 5 bolt to 4 bolt adapter, but here's a 5 bolt to V-band if you might consider welding a V-band on your downpipe deb38's correct about the bastardized twin scroll ...a waste of money unless you maintain true twin scroll. __________________ Nick '95 6sp Supra Twin GT2860's w/TiAL exhaust housings, 2X TiAL WG's and BOV's, on V-band moded HKS twin manifolds, AEM v2, FJO w/NTK, AEM meth/water spray, GSC S1 cams, OS Giken triple clutch and Super Lock LSD, Racelogic

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