mustang 75mm tb upgrades, look here!

[unlmtdndeavor]

Hey everyone, I just got some work done to my BBK 75mm Throttle Body and I thought I would share some of the work.

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First off, I knew that I needed some sort of ADAPTER PULLEY for the throttle cable, since the mustangs use a lever style. This pulley was made so that I could remove the ball end from the mustang and bolt on the pulley, with the drilling of additional hole for the other bolt. The diameter of the pulley is the exact same as the stock one and the surface where the line runs along is radiused as well.

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Next up on the list was the THROTTLE BODY SHAFT BUSHINGS. They are machined too loose from the factory causing boost to leak through them. They are metal bushings unlike our stock o-rings. To combat this I replaced this with bronze bushings machined to a tighter tolerance.

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The stock SPRING on the throttle body is way too weak for our cars. We changed out for a custom spring we had made after testing a few from local stores.

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Due to the bead on the BBK being rather small, which is fine for non-boost applications, but not for us, we decided to make a SUPPORT BRACE to help from blowing off hoses.


The last thing I did was to get an ISC ADAPTER PLATE made so that I could run the stock 1g/2g style ISC with the mustang throttle body. I know people have had trouble with their idle before if they don't have AEM. I will get pictures up of that part tomorrow, hopefully these parts can help those who have had the same problems.

I don't know if this interests any of you guys...but if it does, post up and I can see if I can get more made.

 

[BrokenTsi]

alot of people would be interested depending on the cost im sure! is this a full or half shaft tbody? looks similar to the power plus.

 

[unlmtdndeavor]

this is a BBK...i'm not sure the difference between a half shaft or full shaft throttle body...but the shaft goes all the way through if that makes it a full shaft.

 

[absolute_DSM]

Nice fab work Love the creativity.

 

[GVR4592]

Looks like the same stuff DV/DT was making a few years ago. http://www.dvdtfab.com/

 

[unlmtdndeavor]

i know they made a billet pulley but i haven't seen anyone do any of the other stuff.

 

[GVR4592]

I've seen a few people making bronze bushings, but I haven't seen the spring mod and the support brace is common practice in high boost applications.

 

[unlmtdndeavor]

ok, well i didn't realize all this stuff was so common, never saw most of it the past couple years i've been on here. just figured i'd post it up for people to see since i heard these were some common problems

 

[bling5tatus]

this is a BBK...i'm not sure the difference between a half shaft or full shaft throttle body...but the shaft goes all the way through if that makes it a full shaft.

No, it's determined by if the shaft is "slotted" for the throttle plate to go through the middle or if it's some bullshit "half moon" shaft with a flat side, and the throttle plate just sits against the flat side and screws on.... the "half moon" ones are known to break.

 

[unlmtdndeavor]

I'm interested too Would you be willing to build me one? and for how much?

i can see how much it would be to get some more made. the thing is, when you go to a machine shop and get a one-off product made, it is really expensive. but if i can generate enough interest in the products then I can lower the price down a lot i'm sure. pm me and i can give you more details, i don't want to violate the rules on selling stuff here.

 

[almostquick]

I'm interested. Are you guys using the TB's for the 4.6's or the 5.0's?

 

[unlmtdndeavor]

we are using the throttle body for the 5.0...to answer brokentsi's question, these are full shaft throttle bodies.

the isc adaptor is almost done. last little bit of the machining is being completed. should have pics later today or tomorrow.

 

[almostquick]

may I ask why you decided to go with the 5.0 instead? Also are you guys going to be using a pedal throttle stop as well?

 

[unlmtdndeavor]

i went with the 5.0 because my tb flange is for a 5.0 BBK. i havent looked into a pedal throttle stop yet, but i'll take a look into it now that you mention it.

here's a pic of the bushings pressed in. i will have pics of the isc adaptor tomorrow. let me tell you, it is NICE!

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[Boosted98gsx]

I also want to see the ISC adapter. If someone could make a good aftermarket TB for our cars, using a common bolt pattern and kept the idle stepper, I would be all in.

 

[2gAWDTalon]

I also want to see the ISC adapter. If someone could make a good aftermarket TB for our cars, using a common bolt pattern and kept the idle stepper, I would be all in.

Dont the Ford 75mm TB's have problems breaking the shafts?

 

[almostquick]

It's mainly been linked to the half vs. full throttle shafts. People have also found the placement of the bov and spring size contributed to throttle shaft "breakage," with these TB's.

 

[Boosted98gsx]

the half-shafts are more the culprit than anything else. Having all that force slamming into a throttle plate when it closes really puts stress on the TB shaft. Albert from DVDT solved the problem by machining a full shaft and sent a courteous constructive criticism letter to the manufacturer, who replied with curses and rudeness, then promptly changed their design to a full-shaft.

 

[DirtyBirdRacing]

the half-shafts are more the culprit than anything else. Having all that force slamming into a throttle plate when it closes really puts stress on the TB shaft. Albert from DVDT solved the problem by machining a full shaft and sent a courteous constructive criticism letter to the manufacturer, who replied with curses and rudeness, then promptly changed their design to a full-shaft.

That email reply from the manufacture was hillarious.

Bill

 

[unlmtdndeavor]

alright guys, sorry for the delay. i've been super busy with work and haven't been able to stop by the shop to take some pics.

to address the question of the 5.0 vs the 4.6 throttle body, almostquick & boosted98gsx hit the nail on the head. the 5.0 design is far superior.

on to what everyone has been waiting for..the mustang tb to 1g/2g ISC adapter. as you all may have expected, it is a solid piece of aluminum that has been machined to allow the factory ISC to function with the ports on the mustang throttle body.

the adapter mounts using 2 allen head bolts and the factory ISC bolts right in using factory hardware. (note: the threaded hole on the side of the adapter is to fit a pipe plug after machining the galley in which the air will travel.

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as of now this is the only good pic i have of the unit, but i'm sure you guys get the idea. tell me what you guys think

 

[Boosted98gsx]

How much did it cost you to machine that adaptor, and what kinda cost total in mods to this throttlebody did you accumulate to get it to it's current state?

 

[unlmtdndeavor]

guys, please pm me for details on pricing for any parts. and yes, i can have these parts within a few days.

 

[Irrational]

Why not just buy a Wilson TB thats built for boost?

 

[unlmtdndeavor]

from what i can tell from a quick google search, they do not have a upgraded spring or an isc adapter. it would also need a pulley to work with our throttle linkage. so if it really is built for boost, the only thing i can see that would save you time is the bushings

 

[Irrational]

from what i can tell from a quick google search, they do not have a upgraded spring or an isc adapter. it would also need a pulley to work with our throttle linkage. so if it really is built for boost, the only thing i can see that would save you time is the bushings

JAM has all the bases covered take a look


https://www.jacksonautomachine.com/html/shopping/list_section.cfm?sectionId=33