So me piece of **** E-cutout fell apart, and I really don't feel like dealing with the hassle of it breaking all the time. It's just too fragile. So now I am running open downpipe, but it attracts alot of attention (no bueno). I saw that Jdavis was running an M-cutout, using a throttle body.

I don't feel like spending a ton of $$ on a brand new one, so does anyone know what the largest OEM throttle body is? Off of any car I mean. . I wanna try to find one at a local junkyard. . .

Also, how would I go about opening and closing the Cutout? I figured I could use some sort of bicycle brake cable? Thanks for your help. .

 

Curious what brand of e-cut did you get?

 

McCord. No ones knows what throttle body was 3" + from the factory?

 

ls1 = 3''

 

Any others? That may be kinda expensive from a junkyard, no?

 

Put it under your coat....

 

ITR is 3inch

Dont Mustangs have big TB's too ?

My friend has a 115mm TB at the shop, Im sure its not cheap though

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by itr206 &raquo;</TD></TR><TR><TD CLASS="quote">ITR is 3inch </TD></TR></TABLE>

Really? I seriously doubt ITR's have a 77mm throttlebody, I've never seen a honda motor with bigger than a 62mm (~2.5").

 

Got any pictures of J. Davis's M-cutout?

 

how do you open/close it?

 

One of Nissan or Toyota's biggest V8's has an 85MM throttle body on it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by adictionbass &raquo;</TD></TR><TR><TD CLASS="quote">how do you open/close it?</TD></TR></TABLE>

that's be pretty cool if it opens with your throttle position.

meaning, at WOT the cutout is open WOT

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DefiantGSR &raquo;</TD></TR><TR><TD CLASS="quote">

that's be pretty cool if it opens with your throttle position.

meaning, at WOT the cutout is open WOT</TD></TR></TABLE>

Nah, because it would still be loud all the time, even when accelerating slightly.

I'm asking you guys, how do I open/close it? I know it has to be cable operated, and I can run a cable into the car. . I guess I could use the same kind of lever that is used to control throttle position on lawnmowers? kinda ugly, but I could hide it under the dash or something. .

J. Davis. . Where are you?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boosted92 &raquo;</TD></TR><TR><TD CLASS="quote">One of Nissan or Toyota's biggest V8's has an 85MM throttle body on it.</TD></TR></TABLE>
Awsome, do you know the modle, so I can ask if the junkyard has any of them lying around?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Unsivil_audio &raquo;</TD></TR><TR><TD CLASS="quote">

Really? I seriously doubt ITR's have a 77mm throttlebody, I've never seen a honda motor with bigger than a 62mm (~2.5").</TD></TR></TABLE>


I did have an ITR ya know . lol. I think i would know

I had to buy 3inch to 2.5 inch coupler for my charge pipes and AEM CAI's for the ITR only are 3inch , So you tell me.

 

I'm currently doin an M-cutout on my car as well.. I"m just using an LS throttle body since i have a spare to help save $$... ITs gonna be on the down pipe by the o2 sensor so its size shouldn't be too big of a concern.. I"m using a cruise control actuator to open and close the TB.. Did some tinkering w/ the actuator controls and it came out great..

Right now, its just a matter of time of getting the parts welded on and operating.. Price, next to nothing as compared to those E-cutouts which seem to be unreliable and cost rediculously expensive for what they're made of.. A metal plate, a simple motor, etc...

 

Well I have a spare gsr throttle body lying around, but I think that may kinda choke the turbo. . Right now I have a 3" downpipe, and just a 3" opening, don't you think a 62mm throttle body will hurt it?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 92HB_HB &raquo;</TD></TR><TR><TD CLASS="quote">I'm currently doin an M-cutout on my car as well.. I"m just using an LS throttle body since i have a spare to help save $$... ITs gonna be on the down pipe by the o2 sensor so its size shouldn't be too big of a concern.. I"m using a cruise control actuator to open and close the TB.. Did some tinkering w/ the actuator controls and it came out great..

Right now, its just a matter of time of getting the parts welded on and operating.. Price, next to nothing as compared to those E-cutouts which seem to be unreliable and cost rediculously expensive for what they're made of.. A metal plate, a simple motor, etc...</TD></TR></TABLE>

What did you do to the cruise control box?

 

heres what ive been looking at

http://www.atpturbo.com/root/r...4.htm

 

Too many flaws, the exhauust gasses don't flow out of it, it flows through it, and it's not gonna let the turbo spool as fast as an open downpipe will (aka already open E-cut before boost)

 

5 seconds on ebay :-p

http://cgi.ebay.com/ebaymotors...52327

http://cgi.ebay.com/ebaymotors...10643

 

i wired it up to open and close w/ a rocker switch..

 

Hmm. . IDK if I can live w/o cruise control. .
And doesn't it open pretty slow?

 

infinity Q-45 have a huge throttle body

there is a thread about them on here

think it like 80mm

ITR throttle body is 2 5/8 inside diameter, 2 7/8 outside diameter (approx.)
that would explain the 3" to 2.5" reducer for I/C piping
I just measured one I have in the garage

 

ITR's come stock with 65mm throttle body.. biggest one.. s2000 come with 65mm also.. i think thats as big as they get