RB Exhaust Question

My5ABaby · 11-01-2011, 11:33 AM

I have the full RB n/a exhaust (header --> 2.5" presilencer) and I'm turboing my car. Will the 3" turbo downpipe bolt to the 2.5" presilencer?

Search:
Racing Beat Presilencer Pre silencer Turbo downpipe down pipe

Raksj04 · 11-01-2011, 01:04 PM

if not I have the RB 2.5 in downpipe for sale. it is used with less then 1000 miles on it.

Pete_89T2 · 11-01-2011, 01:20 PM

Quote:

Originally Posted by My5ABaby

I have the full RB n/a exhaust (header --> 2.5" presilencer) and I'm turboing my car. Will the 3" turbo downpipe bolt to the 2.5" presilencer?

Search:
Racing Beat Presilencer Pre silencer Turbo downpipe down pipe

I'm guessing no. For the T2's at least, RB makes two types of DP & presilencer designs. One type is the 3" DP & presilencer combo which is only compatible with the full RB exhaust system (turbo to tailpipes) - can't bolt this one up to a stock or stock replacement catback system. The other type is a 2-1/2" DP & presilencer combo, which is designed to replace everything from the turbo out to the stock main cat, and can be used with any stock replacement catback system.

Raksj04 · 11-01-2011, 01:31 PM

You should email racing beat and find out if it will work with there 3in or 2.5in downpipe. I am trying to sell my 2.5in down pipe pretty bad. $50 o.b.o plus shipping brand new it is 135.00.

djmtsu · 11-01-2011, 01:52 PM

Yes Robert, it will.

That is the set up I was running on my FC.

My5ABaby · 11-02-2011, 08:02 AM

Quote:

Originally Posted by Pete_89T2

I'm guessing no. For the T2's at least, RB makes two types of DP & presilencer designs. One type is the 3" DP & presilencer combo which is only compatible with the full RB exhaust system (turbo to tailpipes) - can't bolt this one up to a stock or stock replacement catback system. The other type is a 2-1/2" DP & presilencer combo, which is designed to replace everything from the turbo out to the stock main cat, and can be used with any stock replacement catback system.

I should have clarified perhaps. I have the full RB N/A exhaust, I just put the header --> presilencer in case it made a difference from the N/A downpipe --> presilencer.

So as a recap, the 2.5 to 2.5 will work.

Quote:

Originally Posted by djmtsu

Yes Robert, it will.

That is the set up I was running on my FC.

So as a second recap, the 3 to 2.5 will also work.

djmtsu · 11-02-2011, 12:18 PM

Yes Robert, it will.

That is the set up I was running on my FC.

There. I recap'd it for you.

My5ABaby · 11-02-2011, 02:30 PM

Score. I presume the 2.5 to 2.5 will flow better since I would think the lip of going from 3 to 2.5 would be a restriction.

FerociousP · 11-02-2011, 02:49 PM

Just get a 2.5" and be done with it.

My5ABaby · 11-03-2011, 08:06 AM

Quote:

Originally Posted by FerociousP

Just get a 2.5" and be done with it.

djmtsu · 11-03-2011, 08:09 AM

What Paul said.

My5ABaby · 11-04-2011, 08:12 AM

I plan on getting a 2.5, but if I find a 3 at the right price it's nice to know I can pick it up.

11-01-2011, 11:33 AM	#1
My5ABaby Sigh..... Join Date: Feb 2008 Location: Murfreesboro, TN iTrader: (6) Posts: 2,377 Rep Power: 19	RB Exhaust Question - Turbo Downpipe to N/A Presilencer I have the full RB n/a exhaust (header --> 2.5" presilencer) and I'm turboing my car. Will the 3" turbo downpipe bolt to the 2.5" presilencer? Search: Racing Beat Presilencer Pre silencer Turbo downpipe down pipe __________________ 1986 Sport: 132k miles, 5A (Sapphire Blue Metallic), Tokico Blues, Racing Beat Springs, Custom LED tailights (only S4 LED tails in the world), SSR Mark II, Racing Beat exhaust, S5 black interior, Rotary Resurrection rebuild at 120k miles Community Service Manual RotorWiki "Imagination costs nothing; we could build square locomotives or fly to Mars" - Felix Wankel Yesterday is history, tomorrow is a mystery, but today is a gift. That is why it is called the "present."

11-01-2011, 01:52 PM	#5
djmtsu My minds tellin' me no... Join Date: Feb 2008 Location: Murfreesboro, TN iTrader: (10) Posts: 4,043 Rep Power: 21	Yes Robert, it will. That is the set up I was running on my FC. __________________ 1976 Mazda Cosmo RX-5 1976 Mazda Cosmo RX-5 2003 Toyota Tundra TRD 2015 Toyota 4Runner SR5

11-02-2011, 12:18 PM	#7
djmtsu My minds tellin' me no... Join Date: Feb 2008 Location: Murfreesboro, TN iTrader: (10) Posts: 4,043 Rep Power: 21	Yes Robert, it will. That is the set up I was running on my FC. There. I recap'd it for you. __________________ 1976 Mazda Cosmo RX-5 1976 Mazda Cosmo RX-5 2003 Toyota Tundra TRD 2015 Toyota 4Runner SR5

11-02-2011, 02:30 PM	#8
My5ABaby Sigh..... Join Date: Feb 2008 Location: Murfreesboro, TN iTrader: (6) Posts: 2,377 Rep Power: 19	Score. I presume the 2.5 to 2.5 will flow better since I would think the lip of going from 3 to 2.5 would be a restriction. __________________ 1986 Sport: 132k miles, 5A (Sapphire Blue Metallic), Tokico Blues, Racing Beat Springs, Custom LED tailights (only S4 LED tails in the world), SSR Mark II, Racing Beat exhaust, S5 black interior, Rotary Resurrection rebuild at 120k miles Community Service Manual RotorWiki "Imagination costs nothing; we could build square locomotives or fly to Mars" - Felix Wankel Yesterday is history, tomorrow is a mystery, but today is a gift. That is why it is called the "present."

11-02-2011, 02:49 PM	#9
FerociousP I-had-a-bad-experience... Join Date: Feb 2008 Location: M'boro iTrader: (2) Posts: 1,046 Rep Power: 18	Just get a 2.5" and be done with it. __________________ '15 Juke Nismo '06 MX-5 GT SOLD '04 S Silver RX-8 GT Track Day Use SOLD '90 Black TII vert w/ Sprint RE stock port/turbo DD dyno (242.6whp@5500rpm @12psi 8psi@redline) and (250ftlbtq@4800rpm @13psi) SOLD '89 GTUs 6p TII SOLD, '87 sport SOLD, '79 SA stock SOLD '91 B2600i 4x4 w/ Rx-8 LSD SOLD

11-01-2011, 01:04 PM	#2
Raksj04 I have Ultra power in me. Join Date: Sep 2011 iTrader: (2) Posts: 457 Rep Power: 14	if not I have the RB 2.5 in downpipe for sale. it is used with less then 1000 miles on it.

11-01-2011, 01:31 PM	#4
Raksj04 I have Ultra power in me. Join Date: Sep 2011 iTrader: (2) Posts: 457 Rep Power: 14	You should email racing beat and find out if it will work with there 3in or 2.5in downpipe. I am trying to sell my 2.5in down pipe pretty bad. $50 o.b.o plus shipping brand new it is 135.00.

11-03-2011, 08:09 AM	#11
djmtsu My minds tellin' me no... Join Date: Feb 2008 Location: Murfreesboro, TN iTrader: (10) Posts: 4,043 Rep Power: 21	What Paul said. __________________ 1976 Mazda Cosmo RX-5 1976 Mazda Cosmo RX-5 2003 Toyota Tundra TRD 2015 Toyota 4Runner SR5

11-04-2011, 08:12 AM	#12
My5ABaby Sigh..... Join Date: Feb 2008 Location: Murfreesboro, TN iTrader: (6) Posts: 2,377 Rep Power: 19	I plan on getting a 2.5, but if I find a 3 at the right price it's nice to know I can pick it up. __________________ 1986 Sport: 132k miles, 5A (Sapphire Blue Metallic), Tokico Blues, Racing Beat Springs, Custom LED tailights (only S4 LED tails in the world), SSR Mark II, Racing Beat exhaust, S5 black interior, Rotary Resurrection rebuild at 120k miles Community Service Manual RotorWiki "Imagination costs nothing; we could build square locomotives or fly to Mars" - Felix Wankel Yesterday is history, tomorrow is a mystery, but today is a gift. That is why it is called the "present."